From 9790fbe79a49e8f1281fda30a5d074039142d347 Mon Sep 17 00:00:00 2001 From: Joachim Hill-Grannec Date: Thu, 31 Aug 2017 16:20:33 -0400 Subject: [PATCH] First go to convert drone-webhook to 0.5 format Added arm and arm64 docker images govendor deps Updated docs --- .drone.sh | 9 + .drone.yml | 57 +- .drone.yml.sig | 1 - .gitignore | 3 +- DOCS.md | 58 +- Dockerfile | 8 +- Dockerfile.arm | 10 + Dockerfile.arm64 | 10 + MAINTAINERS | 46 - Makefile | 34 - README.md | 118 +- main.go | 323 ++-- plugin.go | 167 ++ template.go | 137 ++ types.go | 19 - .../github.com/aymerick/raymond/BENCHMARKS.md | 46 + .../github.com/aymerick/raymond/CHANGELOG.md | 33 + vendor/github.com/aymerick/raymond/LICENSE | 22 + vendor/github.com/aymerick/raymond/README.md | 1417 +++++++++++++++++ vendor/github.com/aymerick/raymond/VERSION | 1 + .../github.com/aymerick/raymond/ast/node.go | 785 +++++++++ .../github.com/aymerick/raymond/ast/print.go | 279 ++++ .../github.com/aymerick/raymond/data_frame.go | 95 ++ vendor/github.com/aymerick/raymond/escape.go | 65 + vendor/github.com/aymerick/raymond/eval.go | 1005 ++++++++++++ vendor/github.com/aymerick/raymond/helper.go | 382 +++++ .../aymerick/raymond/lexer/lexer.go | 639 ++++++++ .../aymerick/raymond/lexer/token.go | 183 +++ .../aymerick/raymond/parser/parser.go | 846 ++++++++++ .../aymerick/raymond/parser/whitespace.go | 360 +++++ vendor/github.com/aymerick/raymond/partial.go | 85 + vendor/github.com/aymerick/raymond/raymond.go | 28 + .../github.com/aymerick/raymond/raymond.png | Bin 0 -> 13661 bytes vendor/github.com/aymerick/raymond/string.go | 84 + .../github.com/aymerick/raymond/template.go | 248 +++ vendor/github.com/aymerick/raymond/utils.go | 85 + vendor/github.com/urfave/cli/CHANGELOG.md | 392 +++++ vendor/github.com/urfave/cli/LICENSE | 21 + vendor/github.com/urfave/cli/README.md | 1381 ++++++++++++++++ vendor/github.com/urfave/cli/app.go | 497 ++++++ vendor/github.com/urfave/cli/appveyor.yml | 24 + vendor/github.com/urfave/cli/category.go | 44 + vendor/github.com/urfave/cli/cli.go | 22 + vendor/github.com/urfave/cli/command.go | 304 ++++ vendor/github.com/urfave/cli/context.go | 278 ++++ vendor/github.com/urfave/cli/errors.go | 115 ++ vendor/github.com/urfave/cli/flag-types.json | 93 ++ vendor/github.com/urfave/cli/flag.go | 799 ++++++++++ .../github.com/urfave/cli/flag_generated.go | 627 ++++++++ vendor/github.com/urfave/cli/funcs.go | 28 + .../github.com/urfave/cli/generate-flag-types | 255 +++ vendor/github.com/urfave/cli/help.go | 338 ++++ vendor/github.com/urfave/cli/runtests | 122 ++ vendor/vendor.json | 37 + 54 files changed, 12647 insertions(+), 418 deletions(-) create mode 100644 .drone.sh delete mode 100644 .drone.yml.sig create mode 100644 Dockerfile.arm create mode 100644 Dockerfile.arm64 delete mode 100644 MAINTAINERS delete mode 100644 Makefile create mode 100644 plugin.go create mode 100644 template.go delete mode 100644 types.go create mode 100644 vendor/github.com/aymerick/raymond/BENCHMARKS.md create mode 100644 vendor/github.com/aymerick/raymond/CHANGELOG.md create mode 100644 vendor/github.com/aymerick/raymond/LICENSE create mode 100644 vendor/github.com/aymerick/raymond/README.md create mode 100644 vendor/github.com/aymerick/raymond/VERSION create mode 100644 vendor/github.com/aymerick/raymond/ast/node.go create mode 100644 vendor/github.com/aymerick/raymond/ast/print.go create mode 100644 vendor/github.com/aymerick/raymond/data_frame.go create mode 100644 vendor/github.com/aymerick/raymond/escape.go create mode 100644 vendor/github.com/aymerick/raymond/eval.go create mode 100644 vendor/github.com/aymerick/raymond/helper.go create mode 100644 vendor/github.com/aymerick/raymond/lexer/lexer.go create mode 100644 vendor/github.com/aymerick/raymond/lexer/token.go create mode 100644 vendor/github.com/aymerick/raymond/parser/parser.go create mode 100644 vendor/github.com/aymerick/raymond/parser/whitespace.go create mode 100644 vendor/github.com/aymerick/raymond/partial.go create mode 100644 vendor/github.com/aymerick/raymond/raymond.go create mode 100644 vendor/github.com/aymerick/raymond/raymond.png create mode 100644 vendor/github.com/aymerick/raymond/string.go create mode 100644 vendor/github.com/aymerick/raymond/template.go create mode 100644 vendor/github.com/aymerick/raymond/utils.go create mode 100644 vendor/github.com/urfave/cli/CHANGELOG.md create mode 100644 vendor/github.com/urfave/cli/LICENSE create mode 100644 vendor/github.com/urfave/cli/README.md create mode 100644 vendor/github.com/urfave/cli/app.go create mode 100644 vendor/github.com/urfave/cli/appveyor.yml create mode 100644 vendor/github.com/urfave/cli/category.go create mode 100644 vendor/github.com/urfave/cli/cli.go create mode 100644 vendor/github.com/urfave/cli/command.go create mode 100644 vendor/github.com/urfave/cli/context.go create mode 100644 vendor/github.com/urfave/cli/errors.go create mode 100644 vendor/github.com/urfave/cli/flag-types.json create mode 100644 vendor/github.com/urfave/cli/flag.go create mode 100644 vendor/github.com/urfave/cli/flag_generated.go create mode 100644 vendor/github.com/urfave/cli/funcs.go create mode 100755 vendor/github.com/urfave/cli/generate-flag-types create mode 100644 vendor/github.com/urfave/cli/help.go create mode 100755 vendor/github.com/urfave/cli/runtests create mode 100644 vendor/vendor.json diff --git a/.drone.sh b/.drone.sh new file mode 100644 index 0000000..591145e --- /dev/null +++ b/.drone.sh @@ -0,0 +1,9 @@ +#!/bin/sh + +set -e +set -x + +# compile the main binary +GOOS=linux GOARCH=amd64 CGO_ENABLED=0 go build -ldflags "-X main.build=${DRONE_BUILD_NUMBER}" -a -tags netgo -o release/linux/amd64/drone-webhook +GOOS=linux GOARCH=arm64 CGO_ENABLED=0 go build -ldflags "-X main.build=${DRONE_BUILD_NUMBER}" -a -tags netgo -o release/linux/arm64/drone-webhook +GOOS=linux GOARCH=arm CGO_ENABLED=0 GOARM=7 go build -ldflags "-X main.build=${DRONE_BUILD_NUMBER}" -a -tags netgo -o release/linux/arm/drone-webhook diff --git a/.drone.yml b/.drone.yml index 3730e81..26e1c7a 100644 --- a/.drone.yml +++ b/.drone.yml @@ -3,32 +3,43 @@ workspace: path: src/github.com/drone-plugins/drone-webhook pipeline: - build: - image: golang:1.6 - environment: - - CGO_ENABLED=0 + test: + image: golang:1.9 commands: - - make deps - - make vet - - make build - - make test + - go vet + - go test -cover -coverprofile=coverage.out - docker: - repo: plugins/drone-webhook - storage_driver: overlay - tag: latest + build_linux_amd64: + image: golang:1.9 + commands: + - sh .drone.sh + + publish_linux_amd64: + image: plugins/docker + repo: plugins/webook + tags: [ latest, 1.0.0, 1.0, 1 ] + secrets: [ docker_username, docker_password ] + dockerfile: Dockerfile when: branch: master event: push -plugin: - name: Webhook - desc: Send build status notifications via Webhook - type: notify - image: plugins/drone-webhook - labels: - - notify - - webhook - - rest - - json - - hook + publish_linux_arm64: + image: plugins/docker + repo: plugins/webhook + tags: [ linux-arm64 ] + secrets: [ docker_username, docker_password ] + dockerfile: Dockerfile.arm64 + when: + branch: master + event: push + + publish_linux_arm: + image: plugins/docker + repo: plugins/webhook + tags: [ linux-arm ] + secrets: [ docker_username, docker_password ] + dockerfile: Dockerfile.arm + when: + branch: master + event: push diff --git a/.drone.yml.sig b/.drone.yml.sig deleted file mode 100644 index f35d038..0000000 --- a/.drone.yml.sig +++ /dev/null @@ -1 +0,0 @@ -eyJhbGciOiJIUzI1NiJ9.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.XE_NdTdvCanuvvQR1DWo2i25DK8GUOYTS0X84UQVJds \ No newline at end of file diff --git a/.gitignore b/.gitignore index b22c5d9..2b8f76c 100644 --- a/.gitignore +++ b/.gitignore @@ -22,6 +22,7 @@ _testmain.go *.exe *.test *.prof - +.idea/ +release/ coverage.out drone-webhook diff --git a/DOCS.md b/DOCS.md index 8cbab99..1e1dc0d 100644 --- a/DOCS.md +++ b/DOCS.md @@ -5,7 +5,9 @@ You can override the default configuration with the following parameters: * `urls` - JSON payloads are sent to each URL * `method` - HTTP request method. Defaults to `POST` -* `header` - HTTP request header map +* `headers` - HTTP request header map +* `username` - The username as a string for HTTP basic auth +* `password` - The password as a string for HTTP basic auth * `skip_verify` - Skip verification of TLS certificates, defaults to `false` ## Example @@ -18,8 +20,8 @@ notify: urls: - https://your.webhook/... - https://your.other.webhook/... - header: - Authorization: pa55word + headers: + - "Authorization=pa55word" ``` ### Custom Body @@ -32,18 +34,7 @@ For this usage the following additional parameters should be used: Example configuration that generate a custom Yaml payload: -```yaml -notify: - webhook: - urls: - - https://your.webhook/... - - https://your.other.webhook/... - content_type: application/yaml - template: > - repo: {{repo.full_name}} - build: {{build.number}} - commit: {{build.commit}} -``` +TBD ### Basic Authentication @@ -54,7 +45,7 @@ In some cases your webhook may need to authenticate with another service. You can set the basic `Authentication` header with a username and password. For these use cases we expose the following additional parameters: -* `auth` - Sets the request's `Authorization` header to use HTTP Basic Authentication with the provided username and password below +* Sets the request's `Authorization` header to use HTTP Basic Authentication with the provided username and password below * `username` - The username as a string * `password` - The password as a string @@ -64,19 +55,14 @@ Example configuration to include HTTP Basic Authentication: notify: webhook: method: POST - auth: - username: $$USERNAME - password: $$PASSWORD + username: myusername + password: mypassword urls: - https://tower.example.com/... ``` ### Debugging Webhooks -> If you have private variables that are encrypted and hidden in `.drone.sec`, -> remember that the `debug` flag may print out those sensitive values. Please -> use `debug: true` wisely. - In some cases complicated webhooks may need debugging to ensure `urls`, `template`, `auth` and more a properly configured. For these use cases we expose the following `debug` parameter: @@ -90,32 +76,12 @@ notify: webhook: debug: true method: POST - auth: - username: $$TOWER_USER - password: $$TOWER_PASS + username: myusername + password: mypassword urls: - http://tower.example.com/api/v1/job_templates/44/launch/ - http://tower.example.com/api/v1/job_templates/45/launch/ - content_type: application/json - template: '{"name": "project.deploy","extra_vars": "{\"env\": \"dev\",\"git_branch\": \"{{ build.branch }}\",\"hipchat_token\": \"$$HIPCHAT_TOKEN\"}"}' + content_type: application/json ``` -Example of a debug print result: -``` -[debug] Webhook 1 - URL: http://tower.example.com/api/v1/job_templates/44/launch/ - METHOD: POST - HEADERS: map[Content-Type:[application/json] Authorization:[Basic EMfNB3fakB8EMfNB3fakB8==]] - REQUEST BODY: {"name": "project.deploy","extra_vars": "{\"env\": \"dev\",\"git_branch\": \"develop\",\"hipchat_token\": \"h1pchatT0k3n\"}"} - RESPONSE STATUS: 202 ACCEPTED - RESPONSE BODY: {"job": 236} - -[debug] Webhook 2 - URL: http://tower.example.com/api/v1/job_templates/45/launch/ - METHOD: POST - HEADERS: map[Content-Type:[application/json] Authorization:[Basic EMfNB3fakB8EMfNB3fakB8==]] - REQUEST BODY: {"name": "project.deploy","extra_vars": "{\"env\": \"dev\",\"git_branch\": \"develop\",\"hipchat_token\": \"h1pchatT0k3n\"}"} - RESPONSE STATUS: 202 ACCEPTED - RESPONSE BODY: {"job": 406} -``` diff --git a/Dockerfile b/Dockerfile index ed0c0dd..e6471b4 100644 --- a/Dockerfile +++ b/Dockerfile @@ -1,14 +1,10 @@ -# Docker image for the Drone Webhook plugin -# -# cd $GOPATH/src/github.com/drone-plugins/drone-webhook -# make deps build docker - FROM alpine:3.3 +MAINTAINER Drone.IO Community RUN apk update && \ apk add \ ca-certificates && \ rm -rf /var/cache/apk/* -ADD drone-webhook /bin/ +ADD release/linux/amd64/drone-webhook /bin/ ENTRYPOINT ["/bin/drone-webhook"] diff --git a/Dockerfile.arm b/Dockerfile.arm new file mode 100644 index 0000000..b47e7b7 --- /dev/null +++ b/Dockerfile.arm @@ -0,0 +1,10 @@ +FROM alpine:3.3 +MAINTAINER Drone.IO Community + +RUN apk update && \ + apk add \ + ca-certificates && \ + rm -rf /var/cache/apk/* + +ADD release/linux/arm/drone-webhook /bin/ +ENTRYPOINT ["/bin/drone-webhook"] \ No newline at end of file diff --git a/Dockerfile.arm64 b/Dockerfile.arm64 new file mode 100644 index 0000000..0c05341 --- /dev/null +++ b/Dockerfile.arm64 @@ -0,0 +1,10 @@ +FROM alpine:3.3 +MAINTAINER Drone.IO Community + +RUN apk update && \ + apk add \ + ca-certificates && \ + rm -rf /var/cache/apk/* + +ADD release/linux/arm64/drone-webhook /bin/ +ENTRYPOINT ["/bin/drone-webhook"] \ No newline at end of file diff --git a/MAINTAINERS b/MAINTAINERS deleted file mode 100644 index 0ecaf19..0000000 --- a/MAINTAINERS +++ /dev/null @@ -1,46 +0,0 @@ -[people] - [people.bradrydzewski] - name = "Brad Rydzewski" - email = "brad@drone.io" - login = "bradrydzewski" - [people.Bugagazavr] - name = "Kirill" - email = "" - login = "Bugagazavr" - [people.donny-dont] - name = "Don Olmstead" - email = "donny-dont@gmail.com" - login = "donny-dont" - [people.jackspirou] - name = "Jack Spirou" - email = "" - login = "jackspirou" - [people.msteinert] - name = "Mike Steinert" - email = "" - login = "msteinert" - [people.nlf] - name = "Nathan LaFreniere" - email = "" - login = "nlf" - [people.tboerger] - name = "Thomas Boerger" - email = "thomas@webhippie.de" - login = "tboerger" - [people.athieriot] - name = "Aurélien Thieriot" - email = "a.thieriot@gmail.com" - login = "athieriot" - -[org] - [org.core] - people = [ - "bradrydzewski", - "Bugagazavr", - "donny-dont", - "jackspirou", - "msteinert", - "nlf", - "tboerger", - "athieriot" - ] diff --git a/Makefile b/Makefile deleted file mode 100644 index 54eba0f..0000000 --- a/Makefile +++ /dev/null @@ -1,34 +0,0 @@ -.PHONY: all clean deps fmt vet test docker - -EXECUTABLE ?= drone-webhook -IMAGE ?= plugins/$(EXECUTABLE) -COMMIT ?= $(shell git rev-parse --short HEAD) - -LDFLAGS = -X "main.buildCommit=$(COMMIT)" -PACKAGES = $(shell go list ./... | grep -v /vendor/) - -all: deps build test - -clean: - go clean -i ./... - -deps: - go get -t ./... - -fmt: - go fmt $(PACKAGES) - -vet: - go vet $(PACKAGES) - -test: - @for PKG in $(PACKAGES); do go test -cover -coverprofile $$GOPATH/src/$$PKG/coverage.out $$PKG || exit 1; done; - -docker: - GOOS=linux GOARCH=amd64 CGO_ENABLED=0 go build -ldflags '-s -w $(LDFLAGS)' - docker build --rm -t $(IMAGE) . - -$(EXECUTABLE): $(wildcard *.go) - go build -ldflags '-s -w $(LDFLAGS)' - -build: $(EXECUTABLE) diff --git a/README.md b/README.md index 1d98e58..ad7167e 100644 --- a/README.md +++ b/README.md @@ -8,112 +8,30 @@ Drone plugin to send build status notifications via Webhook. For the usage infor ## Binary -Build the binary using `make`: +Build the binary using `./.drone.sh`: + +### Usage ``` -make deps build + docker run --rm \ + -e PLUGIN_URLS=https://hooks.somplace.com/endpoing/... \ + -e PLUGIN_HEADERS="HEADER1=value1" \ + -e PLUGIN_USERNAME=drone \ + -e PLUGIN_PASSWORD=password \ + -e DRONE_REPO_OWNER=octocat \ + -e DRONE_REPO_NAME=hello-world \ + -e DRONE_COMMIT_SHA=7fd1a60b01f91b314f59955a4e4d4e80d8edf11d \ + -e DRONE_COMMIT_BRANCH=master \ + -e DRONE_COMMIT_AUTHOR=octocat \ + -e DRONE_BUILD_NUMBER=1 \ + -e DRONE_BUILD_STATUS=success \ + -e DRONE_BUILD_LINK=http://github.com/octocat/hello-world \ + -e DRONE_TAG=1.0.0 \ + plugins/webhook ``` -### Example -```sh -./drone-webhook <= http.StatusBadRequest { - body, err := ioutil.ReadAll(resp.Body) - - if err != nil { - fmt.Printf("Error: Failed to read the HTTP response body. %s\n", err) - } - - if vargs.Debug { - fmt.Printf( - debugRespFormat, - i+1, - req.URL, - req.Method, - req.Header, - string(b), - resp.Status, - string(body), - ) - } else { - fmt.Printf( - respFormat, - i+1, - req.URL, - resp.Status, - string(body), - ) - } - } + if err := app.Run(os.Args); err != nil { + log.Fatal(err) } } + +func run(c *cli.Context) error { + fmt.Printf("Drone Webhook Plugin built from %s\n", version) + + plugin := Plugin{ + Repo: Repo{ + Owner: c.String("repo.owner"), + Name: c.String("repo.name"), + }, + Build: Build{ + Tag: c.String("build.tag"), + Number: c.Int("build.number"), + Event: c.String("build.event"), + Status: c.String("build.status"), + Commit: c.String("commit.sha"), + Ref: c.String("commit.ref"), + Branch: c.String("commit.branch"), + Author: c.String("commit.author"), + Message: c.String("commit.message"), + Link: c.String("build.link"), + Started: c.Int64("build.started"), + Created: c.Int64("build.created"), + }, + Job: Job{ + Started: c.Int64("job.started"), + }, + Config: Config{ + Method: c.String("method"), + Username: c.String("username"), + Password: c.String("password"), + ContentType: c.String("content-type"), + Template: c.String("template"), + Headers: c.StringSlice("headers"), + URLs: c.StringSlice("urls"), + Debug: c.Bool("debug"), + SkipVerify: c.Bool("skip-verify"), + }, + } + return plugin.Exec() +} diff --git a/plugin.go b/plugin.go new file mode 100644 index 0000000..778a8ce --- /dev/null +++ b/plugin.go @@ -0,0 +1,167 @@ +package main + +import ( + "fmt" + "os" + "io/ioutil" + "bytes" + "net/url" + "crypto/tls" + "net/http" + "encoding/json" + "strings" +) +type ( + Repo struct { + Owner string `json:"owner"` + Name string `json:"name"` + } + + Build struct { + Tag string `json:"tag"` + Event string `json:"event"` + Number int `json:"number"` + Commit string `json:"commit"` + Ref string `json:"ref"` + Branch string `json:"branch"` + Author string `json:"author"` + Message string `json:"message"` + Status string `json:"status"` + Link string `json:"link"` + Started int64 `json:"started"` + Created int64 `json:"created"` + } + + Config struct { + Method string + Username string + Password string + ContentType string + Template string + Headers []string + URLs []string + Debug bool + SkipVerify bool + } + + Job struct { + Started int64 `json:"started"` + } + + Plugin struct { + Repo Repo + Build Build + Config Config + Job Job + } +) + +func (p Plugin) Exec() error { + + var buf bytes.Buffer + var b []byte + + if p.Config.Template == "" { + data := struct { + Repo Repo `json:"repo"` + Build Build `json:"build"` + }{p.Repo, p.Build} + + if err := json.NewEncoder(&buf).Encode(&data); err != nil { + fmt.Printf("Error: Failed to encode JSON payload. %s\n", err) + return err + } + b = buf.Bytes() + } else { + txt, err := RenderTrim(p.Config.Template, p) + if err != nil { + return err + } + text := txt + b = []byte(text) + + } + + // build and execute a request for each url. + // all auth, headers, method, template (payload), + // and content_type values will be applied to + // every webhook request. + + for i, rawurl := range p.Config.URLs { + uri, err := url.Parse(rawurl) + + if err != nil { + fmt.Printf("Error: Failed to parse the hook URL. %s\n", err) + os.Exit(1) + } + + r := bytes.NewReader(b) + + req, err := http.NewRequest(p.Config.Method, uri.String(), r) + + if err != nil { + fmt.Printf("Error: Failed to create the HTTP request. %s\n", err) + return err + } + + req.Header.Set("Content-Type", p.Config.ContentType) + + for _, value := range p.Config.Headers { + header := strings.Split(value, "=") + req.Header.Set(header[0], header[1]) + } + + if p.Config.Username != "" && p.Config.Password != "" { + req.SetBasicAuth(p.Config.Username, p.Config.Password) + } + + client := http.DefaultClient + if p.Config.SkipVerify { + client = &http.Client{ + Transport: &http.Transport{ + TLSClientConfig: &tls.Config{InsecureSkipVerify: true}, + }, + } + } + resp, err := client.Do(req) + + if err != nil { + fmt.Printf("Error: Failed to execute the HTTP request. %s\n", err) + return err + } + + defer resp.Body.Close() + + if p.Config.Debug || resp.StatusCode >= http.StatusBadRequest { + body, err := ioutil.ReadAll(resp.Body) + + if err != nil { + fmt.Printf("Error: Failed to read the HTTP response body. %s\n", err) + } + + if p.Config.Debug { + fmt.Printf( + debugRespFormat, + i+1, + req.URL, + req.Method, + req.Header, + string(b), + resp.Status, + string(body), + ) + } else { + fmt.Printf( + respFormat, + i+1, + req.URL, + resp.Status, + string(body), + ) + } + } + } + return nil +} + + diff --git a/template.go b/template.go new file mode 100644 index 0000000..1f9c0ec --- /dev/null +++ b/template.go @@ -0,0 +1,137 @@ +package main + +import ( + "fmt" + "io/ioutil" + "net/http" + "net/url" + "strings" + "time" + "unicode" + "unicode/utf8" + + "github.com/aymerick/raymond" +) + +func init() { + raymond.RegisterHelpers(funcs) +} + +// Render parses and executes a template, returning the results in string format. +func Render(template string, payload interface{}) (s string, err error) { + u, err := url.Parse(template) + if err == nil { + switch u.Scheme { + case "http", "https": + res, err := http.Get(template) + if err != nil { + return s, err + } + defer res.Body.Close() + out, err := ioutil.ReadAll(res.Body) + if err != nil { + return s, err + } + template = string(out) + + case "file": + out, err := ioutil.ReadFile(u.Path) + if err != nil { + return s, err + } + template = string(out) + } + } + + return raymond.Render(template, payload) +} + +// RenderTrim parses and executes a template, returning the results in string +// format. The result is trimmed to remove left and right padding and newlines +// that may be added unintentially in the template markup. +func RenderTrim(template string, playload interface{}) (string, error) { + out, err := Render(template, playload) + return strings.Trim(out, " \n"), err +} + +var funcs = map[string]interface{}{ + "uppercasefirst": uppercaseFirst, + "uppercase": strings.ToUpper, + "lowercase": strings.ToLower, + "duration": toDuration, + "datetime": toDatetime, + "success": isSuccess, + "failure": isFailure, + "truncate": truncate, + "urlencode": urlencode, + "since": since, +} + +func truncate(s string, len int) string { + if utf8.RuneCountInString(s) <= len { + return s + } + runes := []rune(s) + return string(runes[:len]) + +} + +func uppercaseFirst(s string) string { + a := []rune(s) + a[0] = unicode.ToUpper(a[0]) + s = string(a) + return s +} + +func toDuration(started, finished float64) string { + return fmt.Sprintln(time.Duration(finished-started) * time.Second) +} + +func toDatetime(timestamp float64, layout, zone string) string { + if len(zone) == 0 { + return time.Unix(int64(timestamp), 0).Format(layout) + } + loc, err := time.LoadLocation(zone) + if err != nil { + return time.Unix(int64(timestamp), 0).Local().Format(layout) + } + return time.Unix(int64(timestamp), 0).In(loc).Format(layout) +} + +func isSuccess(conditional bool, options *raymond.Options) string { + if !conditional { + return options.Inverse() + } + + switch options.ParamStr(0) { + case "success": + return options.Fn() + default: + return options.Inverse() + } +} + +func isFailure(conditional bool, options *raymond.Options) string { + if !conditional { + return options.Inverse() + } + + switch options.ParamStr(0) { + case "failure", "error", "killed": + return options.Fn() + default: + return options.Inverse() + } +} + +func urlencode(options *raymond.Options) string { + return url.QueryEscape(options.Fn()) +} + +func since(start int64) string { + // NOTE: not using `time.Since()` because the fractional second component + // will give us something like "40m12.917523438s" vs "40m12s". We lose + // some precision, but the format is much more readable. + now := time.Unix(time.Now().Unix(), 0) + return fmt.Sprintln(now.Sub(time.Unix(start, 0))) +} diff --git a/types.go b/types.go deleted file mode 100644 index a5a8682..0000000 --- a/types.go +++ /dev/null @@ -1,19 +0,0 @@ -package main - -// Params represents the valid paramenter options for the webhook plugin. -type Params struct { - URLs []string `json:"urls"` - SkipVerify bool `json:"skip_verify"` - Debug bool `json:"debug"` - Auth Auth `json:"auth"` - Headers map[string]string `json:"header"` - Method string `json:"method"` - Template string `json:"template"` - ContentType string `json:"content_type"` -} - -// Auth represents a basic HTTP authentication username and password. -type Auth struct { - Username string `json:"username"` - Password string `json:"password"` -} diff --git a/vendor/github.com/aymerick/raymond/BENCHMARKS.md b/vendor/github.com/aymerick/raymond/BENCHMARKS.md new file mode 100644 index 0000000..c3af56c --- /dev/null +++ b/vendor/github.com/aymerick/raymond/BENCHMARKS.md @@ -0,0 +1,46 @@ +# Benchmarks + +Hardware: MacBookPro11,1 - Intel Core i5 - 2,6 GHz - 8 Go RAM + +With: + + - handlebars.js #8cba84df119c317fcebc49fb285518542ca9c2d0 + - raymond #7bbaaf50ed03c96b56687d7fa6c6e04e02375a98 + + +## handlebars.js (ops/ms) + + arguments 198 ±4 (5) + array-each 568 ±23 (5) + array-mustache 522 ±18 (4) + complex 71 ±7 (3) + data 67 ±2 (3) + depth-1 47 ±2 (3) + depth-2 14 ±1 (2) + object-mustache 1099 ±47 (5) + object 907 ±58 (4) + partial-recursion 46 ±3 (4) + partial 68 ±3 (3) + paths 1650 ±50 (3) + string 2552 ±157 (3) + subexpression 141 ±2 (4) + variables 2671 ±83 (4) + + +## raymond + + BenchmarkArguments 200000 6642 ns/op 151 ops/ms + BenchmarkArrayEach 100000 19584 ns/op 51 ops/ms + BenchmarkArrayMustache 100000 17305 ns/op 58 ops/ms + BenchmarkComplex 30000 50270 ns/op 20 ops/ms + BenchmarkData 50000 25551 ns/op 39 ops/ms + BenchmarkDepth1 100000 20162 ns/op 50 ops/ms + BenchmarkDepth2 30000 47782 ns/op 21 ops/ms + BenchmarkObjectMustache 200000 7668 ns/op 130 ops/ms + BenchmarkObject 200000 8843 ns/op 113 ops/ms + BenchmarkPartialRecursion 50000 23139 ns/op 43 ops/ms + BenchmarkPartial 50000 31015 ns/op 32 ops/ms + BenchmarkPath 200000 8997 ns/op 111 ops/ms + BenchmarkString 1000000 1879 ns/op 532 ops/ms + BenchmarkSubExpression 300000 4935 ns/op 203 ops/ms + BenchmarkVariables 200000 6478 ns/op 154 ops/ms diff --git a/vendor/github.com/aymerick/raymond/CHANGELOG.md b/vendor/github.com/aymerick/raymond/CHANGELOG.md new file mode 100644 index 0000000..c438a5c --- /dev/null +++ b/vendor/github.com/aymerick/raymond/CHANGELOG.md @@ -0,0 +1,33 @@ +# Raymond Changelog + +### Raymond 2.0.1 _(June 01, 2016)_ + +- [BUGFIX] Removes data races [#3](https://github.com/aymerick/raymond/issues/3) - Thanks [@markbates](https://github.com/markbates) + +### Raymond 2.0.0 _(May 01, 2016)_ + +- [BUGFIX] Fixes passing of context in helper options [#2](https://github.com/aymerick/raymond/issues/2) - Thanks [@GhostRussia](https://github.com/GhostRussia) +- [BREAKING] Renames and unexports constants: + + - `handlebars.DUMP_TPL` + - `lexer.ESCAPED_ESCAPED_OPEN_MUSTACHE` + - `lexer.ESCAPED_OPEN_MUSTACHE` + - `lexer.OPEN_MUSTACHE` + - `lexer.CLOSE_MUSTACHE` + - `lexer.CLOSE_STRIP_MUSTACHE` + - `lexer.CLOSE_UNESCAPED_STRIP_MUSTACHE` + - `lexer.DUMP_TOKEN_POS` + - `lexer.DUMP_ALL_TOKENS_VAL` + + +### Raymond 1.1.0 _(June 15, 2015)_ + +- Permits templates references with lowercase versions of struct fields. +- Adds `ParseFile()` function. +- Adds `RegisterPartialFile()`, `RegisterPartialFiles()` and `Clone()` methods on `Template`. +- Helpers can now be struct methods. +- Ensures safe concurrent access to helpers and partials. + +### Raymond 1.0.0 _(June 09, 2015)_ + +- This is the first release. Raymond supports almost all handlebars features. See https://github.com/aymerick/raymond#limitations for a list of differences with the javascript implementation. diff --git a/vendor/github.com/aymerick/raymond/LICENSE b/vendor/github.com/aymerick/raymond/LICENSE new file mode 100644 index 0000000..6ce87cd --- /dev/null +++ b/vendor/github.com/aymerick/raymond/LICENSE @@ -0,0 +1,22 @@ +The MIT License (MIT) + +Copyright (c) 2015 Aymerick JEHANNE + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. + diff --git a/vendor/github.com/aymerick/raymond/README.md b/vendor/github.com/aymerick/raymond/README.md new file mode 100644 index 0000000..d9a6d9a --- /dev/null +++ b/vendor/github.com/aymerick/raymond/README.md @@ -0,0 +1,1417 @@ +# raymond [![Build Status](https://secure.travis-ci.org/aymerick/raymond.svg?branch=master)](http://travis-ci.org/aymerick/raymond) [![GoDoc](https://godoc.org/github.com/aymerick/raymond?status.svg)](http://godoc.org/github.com/aymerick/raymond) + +Handlebars for [golang](https://golang.org) with the same features as [handlebars.js](http://handlebarsjs.com) `3.0`. + +The full API documentation is available here: . + +![Raymond Logo](https://github.com/aymerick/raymond/blob/master/raymond.png?raw=true "Raymond") + + +# Table of Contents + +- [Quick Start](#quick-start) +- [Correct Usage](#correct-usage) +- [Context](#context) +- [HTML Escaping](#html-escaping) +- [Helpers](#helpers) + - [Template Helpers](#template-helpers) + - [Built-In Helpers](#built-in-helpers) + - [The `if` block helper](#the-if-block-helper) + - [The `unless` block helper](#the-unless-block-helper) + - [The `each` block helper](#the-each-block-helper) + - [The `with` block helper](#the-with-block-helper) + - [The `lookup` helper](#the-lookup-helper) + - [The `log` helper](#the-log-helper) + - [The `equal` helper](#the-equal-helper) + - [Block Helpers](#block-helpers) + - [Block Evaluation](#block-evaluation) + - [Conditional](#conditional) + - [Else Block Evaluation](#else-block-evaluation) + - [Block Parameters](#block-parameters) + - [Helper Parameters](#helper-parameters) + - [Automatic conversion](#automatic-conversion) + - [Options Argument](#options-argument) + - [Context Values](#context-values) + - [Helper Hash Arguments](#helper-hash-arguments) + - [Private Data](#private-data) + - [Utilites](#utilites) + - [`Str()`](#str) + - [`IsTrue()`](#istrue) +- [Context Functions](#context-functions) +- [Partials](#partials) + - [Template Partials](#template-partials) + - [Global Partials](#global-partials) + - [Dynamic Partials](#dynamic-partials) + - [Partial Contexts](#partial-contexts) + - [Partial Parameters](#partial-parameters) +- [Utility Functions](#utility-functions) +- [Mustache](#mustache) +- [Limitations](#limitations) +- [Handlebars Lexer](#handlebars-lexer) +- [Handlebars Parser](#handlebars-parser) +- [Test](#test) +- [References](#references) +- [Others Implementations](#others-implementations) + + +## Quick Start + + $ go get github.com/aymerick/raymond + +The quick and dirty way of rendering a handlebars template: + +```go +package main + +import ( + "fmt" + + "github.com/aymerick/raymond" +) + +func main() { + tpl := `
+

{{title}}

+
+ {{body}} +
+
+` + + ctx := map[string]string{ + "title": "My New Post", + "body": "This is my first post!", + } + + result, err := raymond.Render(tpl, ctx) + if err != nil { + panic("Please report a bug :)") + } + + fmt.Print(result) +} +``` + +Displays: + +```html +
+

My New Post

+
+ This is my first post! +
+
+``` + +Please note that the template will be parsed everytime you call `Render()` function. So you probably want to read the next section. + + +## Correct Usage + +To avoid parsing a template several times, use the `Parse()` and `Exec()` functions: + +```go +package main + +import ( + "fmt" + + "github.com/aymerick/raymond" +) + +func main() { + source := `
+

{{title}}

+
+ {{body}} +
+
+` + + ctxList := []map[string]string{ + { + "title": "My New Post", + "body": "This is my first post!", + }, + { + "title": "Here is another post", + "body": "This is my second post!", + }, + } + + // parse template + tpl, err := raymond.Parse(source) + if err != nil { + panic(err) + } + + for _, ctx := range ctxList { + // render template + result, err := tpl.Exec(ctx) + if err != nil { + panic(err) + } + + fmt.Print(result) + } +} + +``` + +Displays: + +```html +
+

My New Post

+
+ This is my first post! +
+
+
+

Here is another post

+
+ This is my second post! +
+
+``` + +You can use `MustParse()` and `MustExec()` functions if you don't want to deal with errors: + +```go +// parse template +tpl := raymond.MustParse(source) + +// render template +result := tpl.MustExec(ctx) +``` + + +## Context + +The rendering context can contain any type of values, including `array`, `slice`, `map`, `struct` and `func`. + +When using structs, be warned that only exported fields are accessible. However you can access exported fields in template with their lowercase names. For example, both `{{author.firstName}}` and `{{Author.FirstName}}` references give the same result, as long as `Author` and `FirstName` are exported struct fields. + +More, you can use the `handlebars` struct tag to specify a template variable name different from the struct field name. + +```go +package main + +import ( + "fmt" + + "github.com/aymerick/raymond" +) + +func main() { + source := `
+

By {{author.firstName}} {{author.lastName}}

+
{{body}}
+ +

Comments

+ + {{#each comments}} +

By {{author.firstName}} {{author.lastName}}

+
{{content}}
+ {{/each}} +
` + + type Person struct { + FirstName string + LastName string + } + + type Comment struct { + Author Person + Body string `handlebars:"content"` + } + + type Post struct { + Author Person + Body string + Comments []Comment + } + + ctx := Post{ + Person{"Jean", "Valjean"}, + "Life is difficult", + []Comment{ + Comment{ + Person{"Marcel", "Beliveau"}, + "LOL!", + }, + }, + } + + output := raymond.MustRender(source, ctx) + + fmt.Print(output) +} +``` + +Output: + +```html +
+

By Jean Valjean

+
Life is difficult
+ +

Comments

+ +

By Marcel Beliveau

+
LOL!
+
+``` + +## HTML Escaping + +By default, the result of a mustache expression is HTML escaped. Use the triple mustache `{{{` to output unescaped values. + +```go +source := `
+

{{title}}

+
+ {{{body}}} +
+
+` + +ctx := map[string]string{ + "title": "All about

Tags", + "body": "

This is a post about <p> tags

", +} + +tpl := raymond.MustParse(source) +result := tpl.MustExec(ctx) + +fmt.Print(result) +``` + +Output: + +```html +
+

All about <p> Tags

+
+

This is a post about <p> tags

+
+
+``` + +When returning HTML from a helper, you should return a `SafeString` if you don't want it to be escaped by default. When using `SafeString` all unknown or unsafe data should be manually escaped with the `Escape` method. + +```go +raymond.RegisterHelper("link", func(url, text string) raymond.SafeString { + return raymond.SafeString("" + raymond.Escape(text) + "") +}) + +tpl := raymond.MustParse("{{link url text}}") + +ctx := map[string]string{ + "url": "http://www.aymerick.com/", + "text": "This is a cool website", +} + +result := tpl.MustExec(ctx) +fmt.Print(result) +``` + +Output: + +```html +This is a <em>cool</em> website +``` + + +## Helpers + +Helpers can be accessed from any context in a template. You can register a helper with the `RegisterHelper` function. + +For example: + +```html +
+

By {{fullName author}}

+
{{body}}
+ +

Comments

+ + {{#each comments}} +

By {{fullName author}}

+
{{body}}
+ {{/each}} +
+``` + +With this context and helper: + +```go +ctx := map[string]interface{}{ + "author": map[string]string{"firstName": "Jean", "lastName": "Valjean"}, + "body": "Life is difficult", + "comments": []map[string]interface{}{{ + "author": map[string]string{"firstName": "Marcel", "lastName": "Beliveau"}, + "body": "LOL!", + }}, +} + +raymond.RegisterHelper("fullName", func(person map[string]string) string { + return person["firstName"] + " " + person["lastName"] +}) +``` + +Outputs: + +```html +
+

By Jean Valjean

+
Life is difficult
+ +

Comments

+ +

By Marcel Beliveau

+
LOL!
+
+``` + +Helper arguments can be any type. + +The following example uses structs instead of maps and produces the same output as the previous one: + +```html +
+

By {{fullName author}}

+
{{body}}
+ +

Comments

+ + {{#each comments}} +

By {{fullName author}}

+
{{body}}
+ {{/each}} +
+``` + +With this context and helper: + +```go +type Post struct { + Author Person + Body string + Comments []Comment +} + +type Person struct { + FirstName string + LastName string +} + +type Comment struct { + Author Person + Body string +} + +ctx := Post{ + Person{"Jean", "Valjean"}, + "Life is difficult", + []Comment{ + Comment{ + Person{"Marcel", "Beliveau"}, + "LOL!", + }, + }, +} + +RegisterHelper("fullName", func(person Person) string { + return person.FirstName + " " + person.LastName +}) +``` + + +### Template Helpers + +You can register a helper on a specific template, and in that case that helper will be available to that template only: + +```go +tpl := raymond.MustParse("User: {{fullName user.firstName user.lastName}}") + +tpl.RegisterHelper("fullName", func(firstName, lastName string) string { + return firstName + " " + lastName +}) +``` + + +### Built-In Helpers + +Those built-in helpers are available to all templates. + + +#### The `if` block helper + +You can use the `if` helper to conditionally render a block. If its argument returns `false`, `nil`, `0`, `""`, an empty array, an empty slice or an empty map, then raymond will not render the block. + +```html +
+ {{#if author}} +

{{firstName}} {{lastName}}

+ {{/if}} +
+``` + +When using a block expression, you can specify a template section to run if the expression returns a falsy value. That section, marked by `{{else}}` is called an "else section". + +```html +
+ {{#if author}} +

{{firstName}} {{lastName}}

+ {{else}} +

Unknown Author

+ {{/if}} +
+``` + +You can chain several blocks. For example that template: + +```html +{{#if isActive}} + Active +{{else if isInactive}} + Inactive +{{else}} + Unknown +{{/if}} +``` + +With that context: + +```go +ctx := map[string]interface{}{ + "isActive": false, + "isInactive": false, +} +``` + +Outputs: + +```html + Unknown +``` + + +#### The `unless` block helper + +You can use the `unless` helper as the inverse of the `if` helper. Its block will be rendered if the expression returns a falsy value. + +```html +
+ {{#unless license}} +

WARNING: This entry does not have a license!

+ {{/unless}} +
+``` + + +#### The `each` block helper + +You can iterate over an array, a slice, a map or a struct instance using this built-in `each` helper. Inside the block, you can use `this` to reference the element being iterated over. + +For example: + +```html +
    + {{#each people}} +
  • {{this}}
    • + {{/each}} +
+``` + +With this context: + +```go +map[string]interface{}{ + "people": []string{ + "Marcel", "Jean-Claude", "Yvette", + }, +} +``` + +Outputs: + +```html +
    +
  • Marcel
    • +
  • Jean-Claude
    • +
  • Yvette
    • +
+``` + +You can optionally provide an `{{else}}` section which will display only when the passed argument is an empty array, an empty slice or an empty map (a `struct` instance is never considered empty). + +```html +{{#each paragraphs}} +

{{this}}

+{{else}} +

No content

+{{/each}} +``` + +When looping through items in `each`, you can optionally reference the current loop index via `{{@index}}`. + +```html +{{#each array}} + {{@index}}: {{this}} +{{/each}} +``` + +Additionally for map and struct instance iteration, `{{@key}}` references the current map key or struct field name: + +```html +{{#each map}} + {{@key}}: {{this}} +{{/each}} +``` + +The first and last steps of iteration are noted via the `@first` and `@last` variables. + + +#### The `with` block helper + +You can shift the context for a section of a template by using the built-in `with` block helper. + +```html +
+

{{title}}

+ + {{#with author}} +

By {{firstName}} {{lastName}}

+ {{/with}} +
+``` + +With this context: + +```go +map[string]interface{}{ + "title": "My first post!", + "author": map[string]string{ + "firstName": "Jean", + "lastName": "Valjean", + }, +} +``` + +Outputs: + +```html +
+

My first post!

+ +

By Jean Valjean

+
+``` + +You can optionally provide an `{{else}}` section which will display only when the passed argument is falsy. + +```html +{{#with author}} +

{{name}}

+{{else}} +

No content

+{{/with}} +``` + + +#### The `lookup` helper + +The `lookup` helper allows for dynamic parameter resolution using handlebars variables. + +```html +{{#each bar}} + {{lookup ../foo @index}} +{{/each}} +``` + + +#### The `log` helper + +The `log` helper allows for logging while rendering a template. + +```html +{{log "Look at me!"}} +``` + +Note that the handlebars.js `@level` variable is not supported. + + +#### The `equal` helper + +The `equal` helper renders a block if the string version of both arguments are equals. + +For example that template: + +```html +{{#equal foo "bar"}}foo is bar{{/equal}} +{{#equal foo baz}}foo is the same as baz{{/equal}} +{{#equal nb 0}}nothing{{/equal}} +{{#equal nb 1}}there is one{{/equal}} +{{#equal nb "1"}}everything is stringified before comparison{{/equal}} +``` + +With that context: + +```go +ctx := map[string]interface{}{ + "foo": "bar", + "baz": "bar", + "nb": 1, +} +``` + +Outputs: + +```html +foo is bar +foo is the same as baz + +there is one +everything is stringified before comparison +``` + + +### Block Helpers + +Block helpers make it possible to define custom iterators and other functionality that can invoke the passed block with a new context. + + +#### Block Evaluation + +As an example, let's define a block helper that adds some markup to the wrapped text. + +```html +
+

{{title}}

+
+ {{#bold}}{{body}}{{/bold}} +
+
+``` + +The `bold` helper will add markup to make its text bold. + +```go +raymond.RegisterHelper("bold", func(options *raymond.Options) raymond.SafeString { + return raymond.SafeString(`
` + options.Fn() + "
") +}) +``` + +A helper evaluates the block content with current context by calling `options.Fn()`. + +If you want to evaluate the block with another context, then use `options.FnWith(ctx)`, like this french version of built-in `with` block helper: + +```go +raymond.RegisterHelper("avec", func(context interface{}, options *raymond.Options) string { + return options.FnWith(context) +}) +``` + +With that template: + +```html +{{#avec obj.text}}{{this}}{{/avec}} +``` + + +#### Conditional + +Let's write a french version of `if` block helper: + +```go +source := `{{#si yep}}YEP !{{/si}}` + +ctx := map[string]interface{}{"yep": true} + +raymond.RegisterHelper("si", func(conditional bool, options *raymond.Options) string { + if conditional { + return options.Fn() + } + return "" +}) +``` + +Note that as the first parameter of the helper is typed as `bool` an automatic conversion is made if corresponding context value is not a boolean. So this helper works with that context too: + +```go +ctx := map[string]interface{}{"yep": "message"} +``` + +Here, `"message"` is converted to `true` because it is an non-empty string. See `IsTrue()` function for more informations on boolean conversion. + + +#### Else Block Evaluation + +We can enhance the `si` block helper to evaluate the `else block` by calling `options.Inverse()` if conditional is false: + +```go +source := `{{#si yep}}YEP !{{else}}NOP !{{/si}}` + +ctx := map[string]interface{}{"yep": false} + +raymond.RegisterHelper("si", func(conditional bool, options *raymond.Options) string { + if conditional { + return options.Fn() + } + return options.Inverse() +}) +``` + +Outputs: +``` +NOP ! +``` + + +#### Block Parameters + +It's possible to receive named parameters from supporting helpers. + +```html +{{#each users as |user userId|}} + Id: {{userId}} Name: {{user.name}} +{{/each}} +``` + +In this particular example, `user` will have the same value as the current context and `userId` will have the index/key value for the iteration. + +This allows for nested helpers to avoid name conflicts. + +For example: + +```html +{{#each users as |user userId|}} + {{#each user.books as |book bookId|}} + User: {{userId}} Book: {{bookId}} + {{/each}} +{{/each}} +``` + +With this context: + +```go +ctx := map[string]interface{}{ + "users": map[string]interface{}{ + "marcel": map[string]interface{}{ + "books": map[string]interface{}{ + "book1": "My first book", + "book2": "My second book", + }, + }, + "didier": map[string]interface{}{ + "books": map[string]interface{}{ + "bookA": "Good book", + "bookB": "Bad book", + }, + }, + }, +} +``` + +Outputs: + +```html + User: marcel Book: book1 + User: marcel Book: book2 + User: didier Book: bookA + User: didier Book: bookB +``` + +As you can see, the second block parameter is the map key. When using structs, it is the struct field name. + +When using arrays and slices, the second parameter is element index: + +```go +ctx := map[string]interface{}{ + "users": []map[string]interface{}{ + { + "id": "marcel", + "books": []map[string]interface{}{ + {"id": "book1", "title": "My first book"}, + {"id": "book2", "title": "My second book"}, + }, + }, + { + "id": "didier", + "books": []map[string]interface{}{ + {"id": "bookA", "title": "Good book"}, + {"id": "bookB", "title": "Bad book"}, + }, + }, + }, +} +``` + +Outputs: + +```html + User: 0 Book: 0 + User: 0 Book: 1 + User: 1 Book: 0 + User: 1 Book: 1 +``` + + +### Helper Parameters + +When calling a helper in a template, raymond expects the same number of arguments as the number of helper function parameters. + +So this template: + +```html +{{add a}} +``` + +With this helper: + +```go +raymond.RegisterHelper("add", func(val1, val2 int) string { + return strconv.Itoa(val1 + val2) +}) +``` + +Will simply panics, because we call the helper with one argument whereas it expects two. + + +#### Automatic conversion + +Let's create a `concat` helper that expects two strings and concat them: + +```go +source := `{{concat a b}}` + +ctx := map[string]interface{}{ + "a": "Jean", + "b": "Valjean", +} + +raymond.RegisterHelper("concat", func(val1, val2 string) string { + return val1 + " " + val2 +}) +``` + +Everything goes well, two strings are passed as arguments to the helper that outputs: + +```html +Jean VALJEAN +``` + +But what happens if there is another type than `string` in the context ? For example: + +```go +ctx := map[string]interface{}{ + "a": 10, + "b": "Valjean", +} +``` + +Actually, raymond perfoms automatic string conversion. So because the first parameter of the helper is typed as `string`, the first argument will be converted from the `10` integer to `"10"`, and the helper outputs: + +```html +10 VALJEAN +``` + +Note that this kind of automatic conversion is done with `bool` type too, thanks to the `IsTrue()` function. + + +### Options Argument + +If a helper needs the `Options` argument, just add it at the end of helper parameters: + +```go +raymond.RegisterHelper("add", func(val1, val2 int, options *raymond.Options) string { + return strconv.Itoa(val1 + val2) + " " + options.ValueStr("bananas") +}) +``` + +Thanks to the `options` argument, helpers have access to the current evaluation context, to the `Hash` arguments, and they can manipulate the private data variables. + +The `Options` argument is even necessary for Block Helpers to evaluate block and "else block". + + +#### Context Values + +Helpers fetch current context values with `options.Value()` and `options.ValuesStr()`. + +`Value()` returns an `interface{}` and lets the helper do the type assertions whereas `ValueStr()` automatically converts the value to a `string`. + +For example: + +```go +source := `{{concat a b}}` + +ctx := map[string]interface{}{ + "a": "Marcel", + "b": "Beliveau", + "suffix": "FOREVER !", +} + +raymond.RegisterHelper("concat", func(val1, val2 string, options *raymond.Options) string { + return val1 + " " + val2 + " " + options.ValueStr("suffix") +}) +``` + +Outputs: + +```html +Marcel Beliveau FOREVER ! +``` + +Helpers can get the entire current context with `options.Ctx()` that returns an `interface{}`. + + +#### Helper Hash Arguments + +Helpers access hash arguments with `options.HashProp()` and `options.HashStr()`. + +`HashProp()` returns an `interface{}` and lets the helper do the type assertions whereas `HashStr()` automatically converts the value to a `string`. + +For example: + +```go +source := `{{concat suffix first=a second=b}}` + +ctx := map[string]interface{}{ + "a": "Marcel", + "b": "Beliveau", + "suffix": "FOREVER !", +} + +raymond.RegisterHelper("concat", func(suffix string, options *raymond.Options) string { + return options.HashStr("first") + " " + options.HashStr("second") + " " + suffix +}) +``` + +Outputs: + +```html +Marcel Beliveau FOREVER ! +``` + +Helpers can get the full hash with `options.Hash()` that returns a `map[string]interface{}`. + + +#### Private Data + +Helpers access private data variables with `options.Data()` and `options.DataStr()`. + +`Data()` returns an `interface{}` and lets the helper do the type assertions whereas `DataStr()` automatically converts the value to a `string`. + +Helpers can get the entire current data frame with `options.DataFrame()` that returns a `*DataFrame`. + +For helpers that need to inject their own private data frame, use `options.NewDataFrame()` to create the frame and `options.FnData()` to evaluate the block with that frame. + +For example: + +```go +source := `{{#voodoo kind=a}}Voodoo is {{@magix}}{{/voodoo}}` + +ctx := map[string]interface{}{ + "a": "awesome", +} + +raymond.RegisterHelper("voodoo", func(options *raymond.Options) string { + // create data frame with @magix data + frame := options.NewDataFrame() + frame.Set("magix", options.HashProp("kind")) + + // evaluates block with new data frame + return options.FnData(frame) +}) +``` + +Helpers that need to evaluate the block with a private data frame and a new context can call `options.FnCtxData()`. + + +### Utilites + +In addition to `Escape()`, raymond provides utility functions that can be usefull for helpers. + + +#### `Str()` + +`Str()` converts its parameter to a `string`. + +Booleans: + +```go +raymond.Str(3) + " foos and " + raymond.Str(-1.25) + " bars" +// Outputs: "3 foos and -1.25 bars" +``` + +Numbers: + +``` go +"everything is " + raymond.Str(true) + " and nothing is " + raymond.Str(false) +// Outputs: "everything is true and nothing is false" +``` + +Maps: + +```go +raymond.Str(map[string]string{"foo": "bar"}) +// Outputs: "map[foo:bar]" +``` + +Arrays and Slices: + +```go +raymond.Str([]interface{}{true, 10, "foo", 5, "bar"}) +// Outputs: "true10foo5bar" +``` + + +#### `IsTrue()` + +`IsTrue()` returns the truthy version of its parameter. + +It returns `false` when parameter is either: + + - an empty array + - an empty slice + - an empty map + - `""` + - `nil` + - `0` + - `false` + +For all others values, `IsTrue()` returns `true`. + + +## Context Functions + +In addition to helpers, lambdas found in context are evaluated. + +For example, that template and context: + +```go +source := "I {{feeling}} you" + +ctx := map[string]interface{}{ + "feeling": func() string { + rand.Seed(time.Now().UTC().UnixNano()) + + feelings := []string{"hate", "love"} + return feelings[rand.Intn(len(feelings))] + }, +} +``` + +Randomly renders `I hate you` or `I love you`. + +Those context functions behave like helper functions: they can be called with parameters and they can have an `Options` argument. + + +## Partials + +### Template Partials + +You can register template partials before execution: + +```go +tpl := raymond.MustParse("{{> foo}} baz") +tpl.RegisterPartial("foo", "bar") + +result := tpl.MustExec(nil) +fmt.Print(result) +``` + +Output: + +```html +bar baz +``` + +You can register several partials at once: + +```go +tpl := raymond.MustParse("{{> foo}} and {{> baz}}") +tpl.RegisterPartials(map[string]string{ + "foo": "bar", + "baz": "bat", +}) + +result := tpl.MustExec(nil) +fmt.Print(result) +``` + +Output: + +```html +bar and bat +``` + + +### Global Partials + +You can registers global partials that will be accessible by all templates: + +```go +raymond.RegisterPartial("foo", "bar") + +tpl := raymond.MustParse("{{> foo}} baz") +result := tpl.MustExec(nil) +fmt.Print(result) +``` + +Or: + +```go +raymond.RegisterPartials(map[string]string{ + "foo": "bar", + "baz": "bat", +}) + +tpl := raymond.MustParse("{{> foo}} and {{> baz}}") +result := tpl.MustExec(nil) +fmt.Print(result) +``` + + +### Dynamic Partials + +It's possible to dynamically select the partial to be executed by using sub expression syntax. + +For example, that template randomly evaluates the `foo` or `baz` partial: + +```go +tpl := raymond.MustParse("{{> (whichPartial) }}") +tpl.RegisterPartials(map[string]string{ + "foo": "bar", + "baz": "bat", +}) + +ctx := map[string]interface{}{ + "whichPartial": func() string { + rand.Seed(time.Now().UTC().UnixNano()) + + names := []string{"foo", "baz"} + return names[rand.Intn(len(names))] + }, +} + +result := tpl.MustExec(ctx) +fmt.Print(result) +``` + + +### Partial Contexts + +It's possible to execute partials on a custom context by passing in the context to the partial call. + +For example: + +```go +tpl := raymond.MustParse("User: {{> userDetails user }}") +tpl.RegisterPartial("userDetails", "{{firstname}} {{lastname}}") + +ctx := map[string]interface{}{ + "user": map[string]string{ + "firstname": "Jean", + "lastname": "Valjean", + }, +} + +result := tpl.MustExec(ctx) +fmt.Print(result) +``` + +Displays: + +```html +User: Jean Valjean +``` + + +### Partial Parameters + +Custom data can be passed to partials through hash parameters. + +For example: + +```go +tpl := raymond.MustParse("{{> myPartial name=hero }}") +tpl.RegisterPartial("myPartial", "My hero is {{name}}") + +ctx := map[string]interface{}{ + "hero": "Goldorak", +} + +result := tpl.MustExec(ctx) +fmt.Print(result) +``` + +Displays: + +```html +My hero is Goldorak +``` + + +## Utility Functions + +You can use following utility fuctions to parse and register partials from files: + +- `ParseFile()` - reads a file and return parsed template +- `Template.RegisterPartialFile()` - reads a file and registers its content as a partial with given name +- `Template.RegisterPartialFiles()` - reads several files and registers them as partials, the filename base is used as the partial name + + +## Mustache + +Handlebars is a superset of [mustache](https://mustache.github.io) but it differs on those points: + +- Alternative delimiters are not supported +- There is no recursive lookup + + +## Limitations + +These handlebars options are currently NOT implemented: + +- `compat` - enables recursive field lookup +- `knownHelpers` - list of helpers that are known to exist (truthy) at template execution time +- `knownHelpersOnly` - allows further optimizations based on the known helpers list +- `trackIds` - include the id names used to resolve parameters for helpers +- `noEscape` - disables HTML escaping globally +- `strict` - templates will throw rather than silently ignore missing fields +- `assumeObjects` - removes object existence checks when traversing paths +- `preventIndent` - disables the auto-indententation of nested partials +- `stringParams` - resolves a parameter to it's name if the value isn't present in the context stack + +These handlebars features are currently NOT implemented: + +- raw block content is not passed as a parameter to helper +- `blockHelperMissing` - helper called when a helper can not be directly resolved +- `helperMissing` - helper called when a potential helper expression was not found +- `@contextPath` - value set in `trackIds` mode that records the lookup path for the current context +- `@level` - log level + + +## Handlebars Lexer + +You should not use the lexer directly, but for your information here is an example: + +```go +package main + +import ( + "fmt" + + "github.com/aymerick/raymond/lexer" +) + +func main() { + source := "You know {{nothing}} John Snow" + + output := "" + + lex := lexer.Scan(source) + for { + // consume next token + token := lex.NextToken() + + output += fmt.Sprintf(" %s", token) + + // stops when all tokens have been consumed, or on error + if token.Kind == lexer.TokenEOF || token.Kind == lexer.TokenError { + break + } + } + + fmt.Print(output) +} +``` + +Outputs: + +``` +Content{"You know "} Open{"{{"} ID{"nothing"} Close{"}}"} Content{" John Snow"} EOF +``` + + +## Handlebars Parser + +You should not use the parser directly, but for your information here is an example: + +```go +package main + +import ( + "fmt" + + "github.com/aymerick/raymond/ast" + "github.com/aymerick/raymond/parser" +) + +fu nc main() { + source := "You know {{nothing}} John Snow" + + // parse template + program, err := parser.Parse(source) + if err != nil { + panic(err) + } + + // print AST + output := ast.Print(program) + + fmt.Print(output) +} +``` + +Outputs: + +``` +CONTENT[ 'You know ' ] +{{ PATH:nothing [] }} +CONTENT[ ' John Snow' ] +``` + + +## Test + +First, fetch mustache tests: + + $ git submodule update --init + +To run all tests: + + $ go test ./... + +To filter tests: + + $ go test -run="Partials" + +To run all test and all benchmarks: + + $ go test -bench . ./... + +To test with race detection: + + $ go test -race ./... + + +## References + + - + - + - + - + + +## Others Implementations + +- [handlebars.js](http://handlebarsjs.com) - javascript +- [handlebars.java](https://github.com/jknack/handlebars.java) - java +- [handlebars.rb](https://github.com/cowboyd/handlebars.rb) - ruby +- [handlebars.php](https://github.com/XaminProject/handlebars.php) - php +- [handlebars-objc](https://github.com/Bertrand/handlebars-objc) - Objective C +- [rumblebars](https://github.com/nicolas-cherel/rumblebars) - rust diff --git a/vendor/github.com/aymerick/raymond/VERSION b/vendor/github.com/aymerick/raymond/VERSION new file mode 100644 index 0000000..38f77a6 --- /dev/null +++ b/vendor/github.com/aymerick/raymond/VERSION @@ -0,0 +1 @@ +2.0.1 diff --git a/vendor/github.com/aymerick/raymond/ast/node.go b/vendor/github.com/aymerick/raymond/ast/node.go new file mode 100644 index 0000000..aaef066 --- /dev/null +++ b/vendor/github.com/aymerick/raymond/ast/node.go @@ -0,0 +1,785 @@ +// Package ast provides structures to represent a handlebars Abstract Syntax Tree, and a Visitor interface to visit that tree. +package ast + +import ( + "fmt" + "strconv" +) + +// References: +// - https://github.com/wycats/handlebars.js/blob/master/lib/handlebars/compiler/ast.js +// - https://github.com/wycats/handlebars.js/blob/master/docs/compiler-api.md +// - https://github.com/golang/go/blob/master/src/text/template/parse/node.go + +// Node is an element in the AST. +type Node interface { + // node type + Type() NodeType + + // location of node in original input string + Location() Loc + + // string representation, used for debugging + String() string + + // accepts visitor + Accept(Visitor) interface{} +} + +// Visitor is the interface to visit an AST. +type Visitor interface { + VisitProgram(*Program) interface{} + + // statements + VisitMustache(*MustacheStatement) interface{} + VisitBlock(*BlockStatement) interface{} + VisitPartial(*PartialStatement) interface{} + VisitContent(*ContentStatement) interface{} + VisitComment(*CommentStatement) interface{} + + // expressions + VisitExpression(*Expression) interface{} + VisitSubExpression(*SubExpression) interface{} + VisitPath(*PathExpression) interface{} + + // literals + VisitString(*StringLiteral) interface{} + VisitBoolean(*BooleanLiteral) interface{} + VisitNumber(*NumberLiteral) interface{} + + // miscellaneous + VisitHash(*Hash) interface{} + VisitHashPair(*HashPair) interface{} +} + +// NodeType represents an AST Node type. +type NodeType int + +// Type returns itself, and permits struct includers to satisfy that part of Node interface. +func (t NodeType) Type() NodeType { + return t +} + +const ( + // NodeProgram is the program node + NodeProgram NodeType = iota + + // NodeMustache is the mustache statement node + NodeMustache + + // NodeBlock is the block statement node + NodeBlock + + // NodePartial is the partial statement node + NodePartial + + // NodeContent is the content statement node + NodeContent + + // NodeComment is the comment statement node + NodeComment + + // NodeExpression is the expression node + NodeExpression + + // NodeSubExpression is the subexpression node + NodeSubExpression + + // NodePath is the expression path node + NodePath + + // NodeBoolean is the literal boolean node + NodeBoolean + + // NodeNumber is the literal number node + NodeNumber + + // NodeString is the literal string node + NodeString + + // NodeHash is the hash node + NodeHash + + // NodeHashPair is the hash pair node + NodeHashPair +) + +// Loc represents the position of a parsed node in source file. +type Loc struct { + Pos int // Byte position + Line int // Line number +} + +// Location returns itself, and permits struct includers to satisfy that part of Node interface. +func (l Loc) Location() Loc { + return l +} + +// Strip describes node whitespace management. +type Strip struct { + Open bool + Close bool + + OpenStandalone bool + CloseStandalone bool + InlineStandalone bool +} + +// NewStrip instanciates a Strip for given open and close mustaches. +func NewStrip(openStr, closeStr string) *Strip { + return &Strip{ + Open: (len(openStr) > 2) && openStr[2] == '~', + Close: (len(closeStr) > 2) && closeStr[len(closeStr)-3] == '~', + } +} + +// NewStripForStr instanciates a Strip for given tag. +func NewStripForStr(str string) *Strip { + return &Strip{ + Open: (len(str) > 2) && str[2] == '~', + Close: (len(str) > 2) && str[len(str)-3] == '~', + } +} + +// String returns a string representation of receiver that can be used for debugging. +func (s *Strip) String() string { + return fmt.Sprintf("Open: %t, Close: %t, OpenStandalone: %t, CloseStandalone: %t, InlineStandalone: %t", s.Open, s.Close, s.OpenStandalone, s.CloseStandalone, s.InlineStandalone) +} + +// +// Program +// + +// Program represents a program node. +type Program struct { + NodeType + Loc + + Body []Node // [ Statement ... ] + BlockParams []string + Chained bool + + // whitespace management + Strip *Strip +} + +// NewProgram instanciates a new program node. +func NewProgram(pos int, line int) *Program { + return &Program{ + NodeType: NodeProgram, + Loc: Loc{pos, line}, + } +} + +// String returns a string representation of receiver that can be used for debugging. +func (node *Program) String() string { + return fmt.Sprintf("Program{Pos: %d}", node.Loc.Pos) +} + +// Accept is the receiver entry point for visitors. +func (node *Program) Accept(visitor Visitor) interface{} { + return visitor.VisitProgram(node) +} + +// AddStatement adds given statement to program. +func (node *Program) AddStatement(statement Node) { + node.Body = append(node.Body, statement) +} + +// +// Mustache Statement +// + +// MustacheStatement represents a mustache node. +type MustacheStatement struct { + NodeType + Loc + + Unescaped bool + Expression *Expression + + // whitespace management + Strip *Strip +} + +// NewMustacheStatement instanciates a new mustache node. +func NewMustacheStatement(pos int, line int, unescaped bool) *MustacheStatement { + return &MustacheStatement{ + NodeType: NodeMustache, + Loc: Loc{pos, line}, + Unescaped: unescaped, + } +} + +// String returns a string representation of receiver that can be used for debugging. +func (node *MustacheStatement) String() string { + return fmt.Sprintf("Mustache{Pos: %d}", node.Loc.Pos) +} + +// Accept is the receiver entry point for visitors. +func (node *MustacheStatement) Accept(visitor Visitor) interface{} { + return visitor.VisitMustache(node) +} + +// +// Block Statement +// + +// BlockStatement represents a block node. +type BlockStatement struct { + NodeType + Loc + + Expression *Expression + + Program *Program + Inverse *Program + + // whitespace management + OpenStrip *Strip + InverseStrip *Strip + CloseStrip *Strip +} + +// NewBlockStatement instanciates a new block node. +func NewBlockStatement(pos int, line int) *BlockStatement { + return &BlockStatement{ + NodeType: NodeBlock, + Loc: Loc{pos, line}, + } +} + +// String returns a string representation of receiver that can be used for debugging. +func (node *BlockStatement) String() string { + return fmt.Sprintf("Block{Pos: %d}", node.Loc.Pos) +} + +// Accept is the receiver entry point for visitors. +func (node *BlockStatement) Accept(visitor Visitor) interface{} { + return visitor.VisitBlock(node) +} + +// +// Partial Statement +// + +// PartialStatement represents a partial node. +type PartialStatement struct { + NodeType + Loc + + Name Node // PathExpression | SubExpression + Params []Node // [ Expression ... ] + Hash *Hash + + // whitespace management + Strip *Strip + Indent string +} + +// NewPartialStatement instanciates a new partial node. +func NewPartialStatement(pos int, line int) *PartialStatement { + return &PartialStatement{ + NodeType: NodePartial, + Loc: Loc{pos, line}, + } +} + +// String returns a string representation of receiver that can be used for debugging. +func (node *PartialStatement) String() string { + return fmt.Sprintf("Partial{Name:%s, Pos:%d}", node.Name, node.Loc.Pos) +} + +// Accept is the receiver entry point for visitors. +func (node *PartialStatement) Accept(visitor Visitor) interface{} { + return visitor.VisitPartial(node) +} + +// +// Content Statement +// + +// ContentStatement represents a content node. +type ContentStatement struct { + NodeType + Loc + + Value string + Original string + + // whitespace management + RightStripped bool + LeftStripped bool +} + +// NewContentStatement instanciates a new content node. +func NewContentStatement(pos int, line int, val string) *ContentStatement { + return &ContentStatement{ + NodeType: NodeContent, + Loc: Loc{pos, line}, + + Value: val, + Original: val, + } +} + +// String returns a string representation of receiver that can be used for debugging. +func (node *ContentStatement) String() string { + return fmt.Sprintf("Content{Value:'%s', Pos:%d}", node.Value, node.Loc.Pos) +} + +// Accept is the receiver entry point for visitors. +func (node *ContentStatement) Accept(visitor Visitor) interface{} { + return visitor.VisitContent(node) +} + +// +// Comment Statement +// + +// CommentStatement represents a comment node. +type CommentStatement struct { + NodeType + Loc + + Value string + + // whitespace management + Strip *Strip +} + +// NewCommentStatement instanciates a new comment node. +func NewCommentStatement(pos int, line int, val string) *CommentStatement { + return &CommentStatement{ + NodeType: NodeComment, + Loc: Loc{pos, line}, + + Value: val, + } +} + +// String returns a string representation of receiver that can be used for debugging. +func (node *CommentStatement) String() string { + return fmt.Sprintf("Comment{Value:'%s', Pos:%d}", node.Value, node.Loc.Pos) +} + +// Accept is the receiver entry point for visitors. +func (node *CommentStatement) Accept(visitor Visitor) interface{} { + return visitor.VisitComment(node) +} + +// +// Expression +// + +// Expression represents an expression node. +type Expression struct { + NodeType + Loc + + Path Node // PathExpression | StringLiteral | BooleanLiteral | NumberLiteral + Params []Node // [ Expression ... ] + Hash *Hash +} + +// NewExpression instanciates a new expression node. +func NewExpression(pos int, line int) *Expression { + return &Expression{ + NodeType: NodeExpression, + Loc: Loc{pos, line}, + } +} + +// String returns a string representation of receiver that can be used for debugging. +func (node *Expression) String() string { + return fmt.Sprintf("Expr{Path:%s, Pos:%d}", node.Path, node.Loc.Pos) +} + +// Accept is the receiver entry point for visitors. +func (node *Expression) Accept(visitor Visitor) interface{} { + return visitor.VisitExpression(node) +} + +// HelperName returns helper name, or an empty string if this expression can't be a helper. +func (node *Expression) HelperName() string { + path, ok := node.Path.(*PathExpression) + if !ok { + return "" + } + + if path.Data || (len(path.Parts) != 1) || (path.Depth > 0) || path.Scoped { + return "" + } + + return path.Parts[0] +} + +// FieldPath returns path expression representing a field path, or nil if this is not a field path. +func (node *Expression) FieldPath() *PathExpression { + path, ok := node.Path.(*PathExpression) + if !ok { + return nil + } + + return path +} + +// LiteralStr returns the string representation of literal value, with a boolean set to false if this is not a literal. +func (node *Expression) LiteralStr() (string, bool) { + return LiteralStr(node.Path) +} + +// Canonical returns the canonical form of expression node as a string. +func (node *Expression) Canonical() string { + if str, ok := HelperNameStr(node.Path); ok { + return str + } + + return "" +} + +// HelperNameStr returns the string representation of a helper name, with a boolean set to false if this is not a valid helper name. +// +// helperName : path | dataName | STRING | NUMBER | BOOLEAN | UNDEFINED | NULL +func HelperNameStr(node Node) (string, bool) { + // PathExpression + if str, ok := PathExpressionStr(node); ok { + return str, ok + } + + // Literal + if str, ok := LiteralStr(node); ok { + return str, ok + } + + return "", false +} + +// PathExpressionStr returns the string representation of path expression value, with a boolean set to false if this is not a path expression. +func PathExpressionStr(node Node) (string, bool) { + if path, ok := node.(*PathExpression); ok { + result := path.Original + + // "[foo bar]"" => "foo bar" + if (len(result) >= 2) && (result[0] == '[') && (result[len(result)-1] == ']') { + result = result[1 : len(result)-1] + } + + return result, true + } + + return "", false +} + +// LiteralStr returns the string representation of literal value, with a boolean set to false if this is not a literal. +func LiteralStr(node Node) (string, bool) { + if lit, ok := node.(*StringLiteral); ok { + return lit.Value, true + } + + if lit, ok := node.(*BooleanLiteral); ok { + return lit.Canonical(), true + } + + if lit, ok := node.(*NumberLiteral); ok { + return lit.Canonical(), true + } + + return "", false +} + +// +// SubExpression +// + +// SubExpression represents a subexpression node. +type SubExpression struct { + NodeType + Loc + + Expression *Expression +} + +// NewSubExpression instanciates a new subexpression node. +func NewSubExpression(pos int, line int) *SubExpression { + return &SubExpression{ + NodeType: NodeSubExpression, + Loc: Loc{pos, line}, + } +} + +// String returns a string representation of receiver that can be used for debugging. +func (node *SubExpression) String() string { + return fmt.Sprintf("Sexp{Path:%s, Pos:%d}", node.Expression.Path, node.Loc.Pos) +} + +// Accept is the receiver entry point for visitors. +func (node *SubExpression) Accept(visitor Visitor) interface{} { + return visitor.VisitSubExpression(node) +} + +// +// Path Expression +// + +// PathExpression represents a path expression node. +type PathExpression struct { + NodeType + Loc + + Original string + Depth int + Parts []string + Data bool + Scoped bool +} + +// NewPathExpression instanciates a new path expression node. +func NewPathExpression(pos int, line int, data bool) *PathExpression { + result := &PathExpression{ + NodeType: NodePath, + Loc: Loc{pos, line}, + + Data: data, + } + + if data { + result.Original = "@" + } + + return result +} + +// String returns a string representation of receiver that can be used for debugging. +func (node *PathExpression) String() string { + return fmt.Sprintf("Path{Original:'%s', Pos:%d}", node.Original, node.Loc.Pos) +} + +// Accept is the receiver entry point for visitors. +func (node *PathExpression) Accept(visitor Visitor) interface{} { + return visitor.VisitPath(node) +} + +// Part adds path part. +func (node *PathExpression) Part(part string) { + node.Original += part + + switch part { + case "..": + node.Depth++ + node.Scoped = true + case ".", "this": + node.Scoped = true + default: + node.Parts = append(node.Parts, part) + } +} + +// Sep adds path separator. +func (node *PathExpression) Sep(separator string) { + node.Original += separator +} + +// IsDataRoot returns true if path expression is @root. +func (node *PathExpression) IsDataRoot() bool { + return node.Data && (node.Parts[0] == "root") +} + +// +// String Literal +// + +// StringLiteral represents a string node. +type StringLiteral struct { + NodeType + Loc + + Value string +} + +// NewStringLiteral instanciates a new string node. +func NewStringLiteral(pos int, line int, val string) *StringLiteral { + return &StringLiteral{ + NodeType: NodeString, + Loc: Loc{pos, line}, + + Value: val, + } +} + +// String returns a string representation of receiver that can be used for debugging. +func (node *StringLiteral) String() string { + return fmt.Sprintf("String{Value:'%s', Pos:%d}", node.Value, node.Loc.Pos) +} + +// Accept is the receiver entry point for visitors. +func (node *StringLiteral) Accept(visitor Visitor) interface{} { + return visitor.VisitString(node) +} + +// +// Boolean Literal +// + +// BooleanLiteral represents a boolean node. +type BooleanLiteral struct { + NodeType + Loc + + Value bool + Original string +} + +// NewBooleanLiteral instanciates a new boolean node. +func NewBooleanLiteral(pos int, line int, val bool, original string) *BooleanLiteral { + return &BooleanLiteral{ + NodeType: NodeBoolean, + Loc: Loc{pos, line}, + + Value: val, + Original: original, + } +} + +// String returns a string representation of receiver that can be used for debugging. +func (node *BooleanLiteral) String() string { + return fmt.Sprintf("Boolean{Value:%s, Pos:%d}", node.Canonical(), node.Loc.Pos) +} + +// Accept is the receiver entry point for visitors. +func (node *BooleanLiteral) Accept(visitor Visitor) interface{} { + return visitor.VisitBoolean(node) +} + +// Canonical returns the canonical form of boolean node as a string (ie. "true" | "false"). +func (node *BooleanLiteral) Canonical() string { + if node.Value { + return "true" + } + + return "false" +} + +// +// Number Literal +// + +// NumberLiteral represents a number node. +type NumberLiteral struct { + NodeType + Loc + + Value float64 + IsInt bool + Original string +} + +// NewNumberLiteral instanciates a new number node. +func NewNumberLiteral(pos int, line int, val float64, isInt bool, original string) *NumberLiteral { + return &NumberLiteral{ + NodeType: NodeNumber, + Loc: Loc{pos, line}, + + Value: val, + IsInt: isInt, + Original: original, + } +} + +// String returns a string representation of receiver that can be used for debugging. +func (node *NumberLiteral) String() string { + return fmt.Sprintf("Number{Value:%s, Pos:%d}", node.Canonical(), node.Loc.Pos) +} + +// Accept is the receiver entry point for visitors. +func (node *NumberLiteral) Accept(visitor Visitor) interface{} { + return visitor.VisitNumber(node) +} + +// Canonical returns the canonical form of number node as a string (eg: "12", "-1.51"). +func (node *NumberLiteral) Canonical() string { + prec := -1 + if node.IsInt { + prec = 0 + } + return strconv.FormatFloat(node.Value, 'f', prec, 64) +} + +// Number returns an integer or a float. +func (node *NumberLiteral) Number() interface{} { + if node.IsInt { + return int(node.Value) + } + + return node.Value +} + +// +// Hash +// + +// Hash represents a hash node. +type Hash struct { + NodeType + Loc + + Pairs []*HashPair +} + +// NewHash instanciates a new hash node. +func NewHash(pos int, line int) *Hash { + return &Hash{ + NodeType: NodeHash, + Loc: Loc{pos, line}, + } +} + +// String returns a string representation of receiver that can be used for debugging. +func (node *Hash) String() string { + result := fmt.Sprintf("Hash{[%d", node.Loc.Pos) + + for i, p := range node.Pairs { + if i > 0 { + result += ", " + } + result += p.String() + } + + return result + fmt.Sprintf("], Pos:%d}", node.Loc.Pos) +} + +// Accept is the receiver entry point for visitors. +func (node *Hash) Accept(visitor Visitor) interface{} { + return visitor.VisitHash(node) +} + +// +// HashPair +// + +// HashPair represents a hash pair node. +type HashPair struct { + NodeType + Loc + + Key string + Val Node // Expression +} + +// NewHashPair instanciates a new hash pair node. +func NewHashPair(pos int, line int) *HashPair { + return &HashPair{ + NodeType: NodeHashPair, + Loc: Loc{pos, line}, + } +} + +// String returns a string representation of receiver that can be used for debugging. +func (node *HashPair) String() string { + return node.Key + "=" + node.Val.String() +} + +// Accept is the receiver entry point for visitors. +func (node *HashPair) Accept(visitor Visitor) interface{} { + return visitor.VisitHashPair(node) +} diff --git a/vendor/github.com/aymerick/raymond/ast/print.go b/vendor/github.com/aymerick/raymond/ast/print.go new file mode 100644 index 0000000..133ae6e --- /dev/null +++ b/vendor/github.com/aymerick/raymond/ast/print.go @@ -0,0 +1,279 @@ +package ast + +import ( + "fmt" + "strings" +) + +// printVisitor implements the Visitor interface to print a AST. +type printVisitor struct { + buf string + depth int + + original bool + inBlock bool +} + +func newPrintVisitor() *printVisitor { + return &printVisitor{} +} + +// Print returns a string representation of given AST, that can be used for debugging purpose. +func Print(node Node) string { + visitor := newPrintVisitor() + node.Accept(visitor) + return visitor.output() +} + +func (v *printVisitor) output() string { + return v.buf +} + +func (v *printVisitor) indent() { + for i := 0; i < v.depth; { + v.buf += " " + i++ + } +} + +func (v *printVisitor) str(val string) { + v.buf += val +} + +func (v *printVisitor) nl() { + v.str("\n") +} + +func (v *printVisitor) line(val string) { + v.indent() + v.str(val) + v.nl() +} + +// +// Visitor interface +// + +// Statements + +// VisitProgram implements corresponding Visitor interface method +func (v *printVisitor) VisitProgram(node *Program) interface{} { + if len(node.BlockParams) > 0 { + v.line("BLOCK PARAMS: [ " + strings.Join(node.BlockParams, " ") + " ]") + } + + for _, n := range node.Body { + n.Accept(v) + } + + return nil +} + +// VisitMustache implements corresponding Visitor interface method +func (v *printVisitor) VisitMustache(node *MustacheStatement) interface{} { + v.indent() + v.str("{{ ") + + node.Expression.Accept(v) + + v.str(" }}") + v.nl() + + return nil +} + +// VisitBlock implements corresponding Visitor interface method +func (v *printVisitor) VisitBlock(node *BlockStatement) interface{} { + v.inBlock = true + + v.line("BLOCK:") + v.depth++ + + node.Expression.Accept(v) + + if node.Program != nil { + v.line("PROGRAM:") + v.depth++ + node.Program.Accept(v) + v.depth-- + } + + if node.Inverse != nil { + // if node.Program != nil { + // v.depth++ + // } + + v.line("{{^}}") + v.depth++ + node.Inverse.Accept(v) + v.depth-- + + // if node.Program != nil { + // v.depth-- + // } + } + + v.inBlock = false + + return nil +} + +// VisitPartial implements corresponding Visitor interface method +func (v *printVisitor) VisitPartial(node *PartialStatement) interface{} { + v.indent() + v.str("{{> PARTIAL:") + + v.original = true + node.Name.Accept(v) + v.original = false + + if len(node.Params) > 0 { + v.str(" ") + node.Params[0].Accept(v) + } + + // hash + if node.Hash != nil { + v.str(" ") + node.Hash.Accept(v) + } + + v.str(" }}") + v.nl() + + return nil +} + +// VisitContent implements corresponding Visitor interface method +func (v *printVisitor) VisitContent(node *ContentStatement) interface{} { + v.line("CONTENT[ '" + node.Value + "' ]") + + return nil +} + +// VisitComment implements corresponding Visitor interface method +func (v *printVisitor) VisitComment(node *CommentStatement) interface{} { + v.line("{{! '" + node.Value + "' }}") + + return nil +} + +// Expressions + +// VisitExpression implements corresponding Visitor interface method +func (v *printVisitor) VisitExpression(node *Expression) interface{} { + if v.inBlock { + v.indent() + } + + // path + node.Path.Accept(v) + + // params + v.str(" [") + for i, n := range node.Params { + if i > 0 { + v.str(", ") + } + n.Accept(v) + } + v.str("]") + + // hash + if node.Hash != nil { + v.str(" ") + node.Hash.Accept(v) + } + + if v.inBlock { + v.nl() + } + + return nil +} + +// VisitSubExpression implements corresponding Visitor interface method +func (v *printVisitor) VisitSubExpression(node *SubExpression) interface{} { + node.Expression.Accept(v) + + return nil +} + +// VisitPath implements corresponding Visitor interface method +func (v *printVisitor) VisitPath(node *PathExpression) interface{} { + if v.original { + v.str(node.Original) + } else { + path := strings.Join(node.Parts, "/") + + result := "" + if node.Data { + result += "@" + } + + v.str(result + "PATH:" + path) + } + + return nil +} + +// Literals + +// VisitString implements corresponding Visitor interface method +func (v *printVisitor) VisitString(node *StringLiteral) interface{} { + if v.original { + v.str(node.Value) + } else { + v.str("\"" + node.Value + "\"") + } + + return nil +} + +// VisitBoolean implements corresponding Visitor interface method +func (v *printVisitor) VisitBoolean(node *BooleanLiteral) interface{} { + if v.original { + v.str(node.Original) + } else { + v.str(fmt.Sprintf("BOOLEAN{%s}", node.Canonical())) + } + + return nil +} + +// VisitNumber implements corresponding Visitor interface method +func (v *printVisitor) VisitNumber(node *NumberLiteral) interface{} { + if v.original { + v.str(node.Original) + } else { + v.str(fmt.Sprintf("NUMBER{%s}", node.Canonical())) + } + + return nil +} + +// Miscellaneous + +// VisitHash implements corresponding Visitor interface method +func (v *printVisitor) VisitHash(node *Hash) interface{} { + v.str("HASH{") + + for i, p := range node.Pairs { + if i > 0 { + v.str(", ") + } + p.Accept(v) + } + + v.str("}") + + return nil +} + +// VisitHashPair implements corresponding Visitor interface method +func (v *printVisitor) VisitHashPair(node *HashPair) interface{} { + v.str(node.Key + "=") + node.Val.Accept(v) + + return nil +} diff --git a/vendor/github.com/aymerick/raymond/data_frame.go b/vendor/github.com/aymerick/raymond/data_frame.go new file mode 100644 index 0000000..ce63218 --- /dev/null +++ b/vendor/github.com/aymerick/raymond/data_frame.go @@ -0,0 +1,95 @@ +package raymond + +import "reflect" + +// DataFrame represents a private data frame. +// +// Cf. private variables documentation at: http://handlebarsjs.com/block_helpers.html +type DataFrame struct { + parent *DataFrame + data map[string]interface{} +} + +// NewDataFrame instanciates a new private data frame. +func NewDataFrame() *DataFrame { + return &DataFrame{ + data: make(map[string]interface{}), + } +} + +// Copy instanciates a new private data frame with receiver as parent. +func (p *DataFrame) Copy() *DataFrame { + result := NewDataFrame() + + for k, v := range p.data { + result.data[k] = v + } + + result.parent = p + + return result +} + +// newIterDataFrame instanciates a new private data frame with receiver as parent and with iteration data set (@index, @key, @first, @last) +func (p *DataFrame) newIterDataFrame(length int, i int, key interface{}) *DataFrame { + result := p.Copy() + + result.Set("index", i) + result.Set("key", key) + result.Set("first", i == 0) + result.Set("last", i == length-1) + + return result +} + +// Set sets a data value. +func (p *DataFrame) Set(key string, val interface{}) { + p.data[key] = val +} + +// Get gets a data value. +func (p *DataFrame) Get(key string) interface{} { + return p.find([]string{key}) +} + +// find gets a deep data value +// +// @todo This is NOT consistent with the way we resolve data in template (cf. `evalDataPathExpression()`) ! FIX THAT ! +func (p *DataFrame) find(parts []string) interface{} { + data := p.data + + for i, part := range parts { + val := data[part] + if val == nil { + return nil + } + + if i == len(parts)-1 { + // found + return val + } + + valValue := reflect.ValueOf(val) + if valValue.Kind() != reflect.Map { + // not found + return nil + } + + // continue + data = mapStringInterface(valValue) + } + + // not found + return nil +} + +// mapStringInterface converts any `map` to `map[string]interface{}` +func mapStringInterface(value reflect.Value) map[string]interface{} { + result := make(map[string]interface{}) + + for _, key := range value.MapKeys() { + result[strValue(key)] = value.MapIndex(key).Interface() + } + + return result +} diff --git a/vendor/github.com/aymerick/raymond/escape.go b/vendor/github.com/aymerick/raymond/escape.go new file mode 100644 index 0000000..6a0363c --- /dev/null +++ b/vendor/github.com/aymerick/raymond/escape.go @@ -0,0 +1,65 @@ +package raymond + +import ( + "bytes" + "strings" +) + +// +// That whole file is borrowed from https://github.com/golang/go/tree/master/src/html/escape.go +// +// With changes: +// ' => ' +// " => " +// +// To stay in sync with JS implementation, and make mustache tests pass. +// + +type writer interface { + WriteString(string) (int, error) +} + +const escapedChars = `&'<>"` + +func escape(w writer, s string) error { + i := strings.IndexAny(s, escapedChars) + for i != -1 { + if _, err := w.WriteString(s[:i]); err != nil { + return err + } + var esc string + switch s[i] { + case '&': + esc = "&" + case '\'': + esc = "'" + case '<': + esc = "<" + case '>': + esc = ">" + case '"': + esc = """ + default: + panic("unrecognized escape character") + } + s = s[i+1:] + if _, err := w.WriteString(esc); err != nil { + return err + } + i = strings.IndexAny(s, escapedChars) + } + _, err := w.WriteString(s) + return err +} + +// Escape escapes special HTML characters. +// +// It can be used by helpers that return a SafeString and that need to escape some content by themselves. +func Escape(s string) string { + if strings.IndexAny(s, escapedChars) == -1 { + return s + } + var buf bytes.Buffer + escape(&buf, s) + return buf.String() +} diff --git a/vendor/github.com/aymerick/raymond/eval.go b/vendor/github.com/aymerick/raymond/eval.go new file mode 100644 index 0000000..7683f4e --- /dev/null +++ b/vendor/github.com/aymerick/raymond/eval.go @@ -0,0 +1,1005 @@ +package raymond + +import ( + "bytes" + "fmt" + "reflect" + "strconv" + "strings" + + "github.com/aymerick/raymond/ast" +) + +var ( + // @note borrowed from https://github.com/golang/go/tree/master/src/text/template/exec.go + errorType = reflect.TypeOf((*error)(nil)).Elem() + fmtStringerType = reflect.TypeOf((*fmt.Stringer)(nil)).Elem() + + zero reflect.Value +) + +// evalVisitor evaluates a handlebars template with context +type evalVisitor struct { + tpl *Template + + // contexts stack + ctx []reflect.Value + + // current data frame (chained with parent) + dataFrame *DataFrame + + // block parameters stack + blockParams []map[string]interface{} + + // block statements stack + blocks []*ast.BlockStatement + + // expressions stack + exprs []*ast.Expression + + // memoize expressions that were function calls + exprFunc map[*ast.Expression]bool + + // used for info on panic + curNode ast.Node +} + +// NewEvalVisitor instanciate a new evaluation visitor with given context and initial private data frame +// +// If privData is nil, then a default data frame is created +func newEvalVisitor(tpl *Template, ctx interface{}, privData *DataFrame) *evalVisitor { + frame := privData + if frame == nil { + frame = NewDataFrame() + } + + return &evalVisitor{ + tpl: tpl, + ctx: []reflect.Value{reflect.ValueOf(ctx)}, + dataFrame: frame, + exprFunc: make(map[*ast.Expression]bool), + } +} + +// at sets current node +func (v *evalVisitor) at(node ast.Node) { + v.curNode = node +} + +// +// Contexts stack +// + +// pushCtx pushes new context to the stack +func (v *evalVisitor) pushCtx(ctx reflect.Value) { + v.ctx = append(v.ctx, ctx) +} + +// popCtx pops last context from stack +func (v *evalVisitor) popCtx() reflect.Value { + if len(v.ctx) == 0 { + return zero + } + + var result reflect.Value + result, v.ctx = v.ctx[len(v.ctx)-1], v.ctx[:len(v.ctx)-1] + + return result +} + +// rootCtx returns root context +func (v *evalVisitor) rootCtx() reflect.Value { + return v.ctx[0] +} + +// curCtx returns current context +func (v *evalVisitor) curCtx() reflect.Value { + return v.ancestorCtx(0) +} + +// ancestorCtx returns ancestor context +func (v *evalVisitor) ancestorCtx(depth int) reflect.Value { + index := len(v.ctx) - 1 - depth + if index < 0 { + return zero + } + + return v.ctx[index] +} + +// +// Private data frame +// + +// setDataFrame sets new data frame +func (v *evalVisitor) setDataFrame(frame *DataFrame) { + v.dataFrame = frame +} + +// popDataFrame sets back parent data frame +func (v *evalVisitor) popDataFrame() { + v.dataFrame = v.dataFrame.parent +} + +// +// Block Parameters stack +// + +// pushBlockParams pushes new block params to the stack +func (v *evalVisitor) pushBlockParams(params map[string]interface{}) { + v.blockParams = append(v.blockParams, params) +} + +// popBlockParams pops last block params from stack +func (v *evalVisitor) popBlockParams() map[string]interface{} { + var result map[string]interface{} + + if len(v.blockParams) == 0 { + return result + } + + result, v.blockParams = v.blockParams[len(v.blockParams)-1], v.blockParams[:len(v.blockParams)-1] + return result +} + +// blockParam iterates on stack to find given block parameter, and returns its value or nil if not founc +func (v *evalVisitor) blockParam(name string) interface{} { + for i := len(v.blockParams) - 1; i >= 0; i-- { + for k, v := range v.blockParams[i] { + if name == k { + return v + } + } + } + + return nil +} + +// +// Blocks stack +// + +// pushBlock pushes new block statement to stack +func (v *evalVisitor) pushBlock(block *ast.BlockStatement) { + v.blocks = append(v.blocks, block) +} + +// popBlock pops last block statement from stack +func (v *evalVisitor) popBlock() *ast.BlockStatement { + if len(v.blocks) == 0 { + return nil + } + + var result *ast.BlockStatement + result, v.blocks = v.blocks[len(v.blocks)-1], v.blocks[:len(v.blocks)-1] + + return result +} + +// curBlock returns current block statement +func (v *evalVisitor) curBlock() *ast.BlockStatement { + if len(v.blocks) == 0 { + return nil + } + + return v.blocks[len(v.blocks)-1] +} + +// +// Expressions stack +// + +// pushExpr pushes new expression to stack +func (v *evalVisitor) pushExpr(expression *ast.Expression) { + v.exprs = append(v.exprs, expression) +} + +// popExpr pops last expression from stack +func (v *evalVisitor) popExpr() *ast.Expression { + if len(v.exprs) == 0 { + return nil + } + + var result *ast.Expression + result, v.exprs = v.exprs[len(v.exprs)-1], v.exprs[:len(v.exprs)-1] + + return result +} + +// curExpr returns current expression +func (v *evalVisitor) curExpr() *ast.Expression { + if len(v.exprs) == 0 { + return nil + } + + return v.exprs[len(v.exprs)-1] +} + +// +// Error functions +// + +// errPanic panics +func (v *evalVisitor) errPanic(err error) { + panic(fmt.Errorf("Evaluation error: %s\nCurrent node:\n\t%s", err, v.curNode)) +} + +// errorf panics with a custom message +func (v *evalVisitor) errorf(format string, args ...interface{}) { + v.errPanic(fmt.Errorf(format, args...)) +} + +// +// Evaluation +// + +// evalProgram eEvaluates program with given context and returns string result +func (v *evalVisitor) evalProgram(program *ast.Program, ctx interface{}, data *DataFrame, key interface{}) string { + blockParams := make(map[string]interface{}) + + // compute block params + if len(program.BlockParams) > 0 { + blockParams[program.BlockParams[0]] = ctx + } + + if (len(program.BlockParams) > 1) && (key != nil) { + blockParams[program.BlockParams[1]] = key + } + + // push contexts + if len(blockParams) > 0 { + v.pushBlockParams(blockParams) + } + + ctxVal := reflect.ValueOf(ctx) + if ctxVal.IsValid() { + v.pushCtx(ctxVal) + } + + if data != nil { + v.setDataFrame(data) + } + + // evaluate program + result, _ := program.Accept(v).(string) + + // pop contexts + if data != nil { + v.popDataFrame() + } + + if ctxVal.IsValid() { + v.popCtx() + } + + if len(blockParams) > 0 { + v.popBlockParams() + } + + return result +} + +// evalPath evaluates all path parts with given context +func (v *evalVisitor) evalPath(ctx reflect.Value, parts []string, exprRoot bool) (reflect.Value, bool) { + partResolved := false + + for i := 0; i < len(parts); i++ { + part := parts[i] + + // "[foo bar]"" => "foo bar" + if (len(part) >= 2) && (part[0] == '[') && (part[len(part)-1] == ']') { + part = part[1 : len(part)-1] + } + + ctx = v.evalField(ctx, part, exprRoot) + if !ctx.IsValid() { + break + } + + // we resolved at least one part of path + partResolved = true + } + + return ctx, partResolved +} + +// evalField evaluates field with given context +func (v *evalVisitor) evalField(ctx reflect.Value, fieldName string, exprRoot bool) reflect.Value { + result := zero + + ctx, _ = indirect(ctx) + if !ctx.IsValid() { + return result + } + + // check if this is a method call + result, isMeth := v.evalMethod(ctx, fieldName, exprRoot) + if !isMeth { + switch ctx.Kind() { + case reflect.Struct: + // example: firstName => FirstName + expFieldName := strings.Title(fieldName) + + // check if struct have this field and that it is exported + if tField, ok := ctx.Type().FieldByName(expFieldName); ok && (tField.PkgPath == "") { + // struct field + result = ctx.FieldByIndex(tField.Index) + break + } + + // attempts to find template variable name as a struct tag + result = v.evalStructTag(ctx, fieldName) + case reflect.Map: + nameVal := reflect.ValueOf(fieldName) + if nameVal.Type().AssignableTo(ctx.Type().Key()) { + // map key + result = ctx.MapIndex(nameVal) + } + case reflect.Array, reflect.Slice: + if i, err := strconv.Atoi(fieldName); (err == nil) && (i < ctx.Len()) { + result = ctx.Index(i) + } + } + } + + // check if result is a function + result, _ = indirect(result) + if result.Kind() == reflect.Func { + result = v.evalFieldFunc(fieldName, result, exprRoot) + } + + return result +} + +// evalFieldFunc tries to evaluate given method name, and a boolean to indicate if this was a method call +func (v *evalVisitor) evalMethod(ctx reflect.Value, name string, exprRoot bool) (reflect.Value, bool) { + if ctx.Kind() != reflect.Interface && ctx.CanAddr() { + ctx = ctx.Addr() + } + + method := ctx.MethodByName(name) + if !method.IsValid() { + // example: subject() => Subject() + method = ctx.MethodByName(strings.Title(name)) + } + + if !method.IsValid() { + return zero, false + } + + return v.evalFieldFunc(name, method, exprRoot), true +} + +// evalFieldFunc evaluates given function +func (v *evalVisitor) evalFieldFunc(name string, funcVal reflect.Value, exprRoot bool) reflect.Value { + ensureValidHelper(name, funcVal) + + var options *Options + if exprRoot { + // create function arg with all params/hash + expr := v.curExpr() + options = v.helperOptions(expr) + + // ok, that expression was a function call + v.exprFunc[expr] = true + } else { + // we are not at root of expression, so we are a parameter... and we don't like + // infinite loops caused by trying to parse ourself forever + options = newEmptyOptions(v) + } + + return v.callFunc(name, funcVal, options) +} + +// evalStructTag checks for the existence of a struct tag containing the +// name of the variable in the template. This allows for a template variable to +// be separated from the field in the struct. +func (v *evalVisitor) evalStructTag(ctx reflect.Value, name string) reflect.Value { + val := reflect.ValueOf(ctx.Interface()) + + for i := 0; i < val.NumField(); i++ { + field := val.Type().Field(i) + tag := field.Tag.Get("handlebars") + if tag == name { + return val.Field(i) + } + } + + return zero +} + +// findBlockParam returns node's block parameter +func (v *evalVisitor) findBlockParam(node *ast.PathExpression) (string, interface{}) { + if len(node.Parts) > 0 { + name := node.Parts[0] + if value := v.blockParam(name); value != nil { + return name, value + } + } + + return "", nil +} + +// evalPathExpression evaluates a path expression +func (v *evalVisitor) evalPathExpression(node *ast.PathExpression, exprRoot bool) interface{} { + var result interface{} + + if name, value := v.findBlockParam(node); value != nil { + // block parameter value + + // We push a new context so we can evaluate the path expression (note: this may be a bad idea). + // + // Example: + // {{#foo as |bar|}} + // {{bar.baz}} + // {{/foo}} + // + // With data: + // {"foo": {"baz": "bat"}} + newCtx := map[string]interface{}{name: value} + + v.pushCtx(reflect.ValueOf(newCtx)) + result = v.evalCtxPathExpression(node, exprRoot) + v.popCtx() + } else { + ctxTried := false + + if node.IsDataRoot() { + // context path + result = v.evalCtxPathExpression(node, exprRoot) + + ctxTried = true + } + + if (result == nil) && node.Data { + // if it is @root, then we tried to evaluate with root context but nothing was found + // so let's try with private data + + // private data + result = v.evalDataPathExpression(node, exprRoot) + } + + if (result == nil) && !ctxTried { + // context path + result = v.evalCtxPathExpression(node, exprRoot) + } + } + + return result +} + +// evalDataPathExpression evaluates a private data path expression +func (v *evalVisitor) evalDataPathExpression(node *ast.PathExpression, exprRoot bool) interface{} { + // find data frame + frame := v.dataFrame + for i := node.Depth; i > 0; i-- { + if frame.parent == nil { + return nil + } + frame = frame.parent + } + + // resolve data + // @note Can be changed to v.evalCtx() as context can't be an array + result, _ := v.evalCtxPath(reflect.ValueOf(frame.data), node.Parts, exprRoot) + return result +} + +// evalCtxPathExpression evaluates a context path expression +func (v *evalVisitor) evalCtxPathExpression(node *ast.PathExpression, exprRoot bool) interface{} { + v.at(node) + + if node.IsDataRoot() { + // `@root` - remove the first part + parts := node.Parts[1:len(node.Parts)] + + result, _ := v.evalCtxPath(v.rootCtx(), parts, exprRoot) + return result + } + + return v.evalDepthPath(node.Depth, node.Parts, exprRoot) +} + +// evalDepthPath iterates on contexts, starting at given depth, until there is one that resolve given path parts +func (v *evalVisitor) evalDepthPath(depth int, parts []string, exprRoot bool) interface{} { + var result interface{} + partResolved := false + + ctx := v.ancestorCtx(depth) + + for (result == nil) && ctx.IsValid() && (depth <= len(v.ctx) && !partResolved) { + // try with context + result, partResolved = v.evalCtxPath(ctx, parts, exprRoot) + + // As soon as we find the first part of a path, we must not try to resolve with parent context if result is finally `nil` + // Reference: "Dotted Names - Context Precedence" mustache test + if !partResolved && (result == nil) { + // try with previous context + depth++ + ctx = v.ancestorCtx(depth) + } + } + + return result +} + +// evalCtxPath evaluates path with given context +func (v *evalVisitor) evalCtxPath(ctx reflect.Value, parts []string, exprRoot bool) (interface{}, bool) { + var result interface{} + partResolved := false + + switch ctx.Kind() { + case reflect.Array, reflect.Slice: + // Array context + var results []interface{} + + for i := 0; i < ctx.Len(); i++ { + value, _ := v.evalPath(ctx.Index(i), parts, exprRoot) + if value.IsValid() { + results = append(results, value.Interface()) + } + } + + result = results + default: + // NOT array context + var value reflect.Value + + value, partResolved = v.evalPath(ctx, parts, exprRoot) + if value.IsValid() { + result = value.Interface() + } + } + + return result, partResolved +} + +// +// Helpers +// + +// isHelperCall returns true if given expression is a helper call +func (v *evalVisitor) isHelperCall(node *ast.Expression) bool { + if helperName := node.HelperName(); helperName != "" { + return v.findHelper(helperName) != zero + } + return false +} + +// findHelper finds given helper +func (v *evalVisitor) findHelper(name string) reflect.Value { + // check template helpers + if h := v.tpl.findHelper(name); h != zero { + return h + } + + // check global helpers + return findHelper(name) +} + +// callFunc calls function with given options +func (v *evalVisitor) callFunc(name string, funcVal reflect.Value, options *Options) reflect.Value { + params := options.Params() + + funcType := funcVal.Type() + + // @todo Is there a better way to do that ? + strType := reflect.TypeOf("") + boolType := reflect.TypeOf(true) + + // check parameters number + addOptions := false + numIn := funcType.NumIn() + + if numIn == len(params)+1 { + lastArgType := funcType.In(numIn - 1) + if reflect.TypeOf(options).AssignableTo(lastArgType) { + addOptions = true + } + } + + if !addOptions && (len(params) != numIn) { + v.errorf("Helper '%s' called with wrong number of arguments, needed %d but got %d", name, numIn, len(params)) + } + + // check and collect arguments + args := make([]reflect.Value, numIn) + for i, param := range params { + arg := reflect.ValueOf(param) + argType := funcType.In(i) + + if !arg.IsValid() { + if canBeNil(argType) { + arg = reflect.Zero(argType) + } else if argType.Kind() == reflect.String { + arg = reflect.ValueOf("") + } else { + // @todo Maybe we can panic on that + return reflect.Zero(strType) + } + } + + if !arg.Type().AssignableTo(argType) { + if strType.AssignableTo(argType) { + // convert parameter to string + arg = reflect.ValueOf(strValue(arg)) + } else if boolType.AssignableTo(argType) { + // convert parameter to bool + val, _ := isTrueValue(arg) + arg = reflect.ValueOf(val) + } else { + v.errorf("Helper %s called with argument %d with type %s but it should be %s", name, i, arg.Type(), argType) + } + } + + args[i] = arg + } + + if addOptions { + args[numIn-1] = reflect.ValueOf(options) + } + + result := funcVal.Call(args) + + return result[0] +} + +// callHelper invoqs helper function for given expression node +func (v *evalVisitor) callHelper(name string, helper reflect.Value, node *ast.Expression) interface{} { + result := v.callFunc(name, helper, v.helperOptions(node)) + if !result.IsValid() { + return nil + } + + // @todo We maybe want to ensure here that helper returned a string or a SafeString + return result.Interface() +} + +// helperOptions computes helper options argument from an expression +func (v *evalVisitor) helperOptions(node *ast.Expression) *Options { + var params []interface{} + var hash map[string]interface{} + + for _, paramNode := range node.Params { + param := paramNode.Accept(v) + params = append(params, param) + } + + if node.Hash != nil { + hash, _ = node.Hash.Accept(v).(map[string]interface{}) + } + + return newOptions(v, params, hash) +} + +// +// Partials +// + +// findPartial finds given partial +func (v *evalVisitor) findPartial(name string) *partial { + // check template partials + if p := v.tpl.findPartial(name); p != nil { + return p + } + + // check global partials + return findPartial(name) +} + +// partialContext computes partial context +func (v *evalVisitor) partialContext(node *ast.PartialStatement) reflect.Value { + if nb := len(node.Params); nb > 1 { + v.errorf("Unsupported number of partial arguments: %d", nb) + } + + if (len(node.Params) > 0) && (node.Hash != nil) { + v.errorf("Passing both context and named parameters to a partial is not allowed") + } + + if len(node.Params) == 1 { + return reflect.ValueOf(node.Params[0].Accept(v)) + } + + if node.Hash != nil { + hash, _ := node.Hash.Accept(v).(map[string]interface{}) + return reflect.ValueOf(hash) + } + + return zero +} + +// evalPartial evaluates a partial +func (v *evalVisitor) evalPartial(p *partial, node *ast.PartialStatement) string { + // get partial template + partialTpl, err := p.template() + if err != nil { + v.errPanic(err) + } + + // push partial context + ctx := v.partialContext(node) + if ctx.IsValid() { + v.pushCtx(ctx) + } + + // evaluate partial template + result, _ := partialTpl.program.Accept(v).(string) + + // ident partial + result = indentLines(result, node.Indent) + + if ctx.IsValid() { + v.popCtx() + } + + return result +} + +// indentLines indents all lines of given string +func indentLines(str string, indent string) string { + if indent == "" { + return str + } + + var indented []string + + lines := strings.Split(str, "\n") + for i, line := range lines { + if (i == (len(lines) - 1)) && (line == "") { + // input string ends with a new line + indented = append(indented, line) + } else { + indented = append(indented, indent+line) + } + } + + return strings.Join(indented, "\n") +} + +// +// Functions +// + +// wasFuncCall returns true if given expression was a function call +func (v *evalVisitor) wasFuncCall(node *ast.Expression) bool { + // check if expression was tagged as a function call + return v.exprFunc[node] +} + +// +// Visitor interface +// + +// Statements + +// VisitProgram implements corresponding Visitor interface method +func (v *evalVisitor) VisitProgram(node *ast.Program) interface{} { + v.at(node) + + buf := new(bytes.Buffer) + + for _, n := range node.Body { + if str := Str(n.Accept(v)); str != "" { + if _, err := buf.Write([]byte(str)); err != nil { + v.errPanic(err) + } + } + } + + return buf.String() +} + +// VisitMustache implements corresponding Visitor interface method +func (v *evalVisitor) VisitMustache(node *ast.MustacheStatement) interface{} { + v.at(node) + + // evaluate expression + expr := node.Expression.Accept(v) + + // check if this is a safe string + isSafe := isSafeString(expr) + + // get string value + str := Str(expr) + if !isSafe && !node.Unescaped { + // escape html + str = Escape(str) + } + + return str +} + +// VisitBlock implements corresponding Visitor interface method +func (v *evalVisitor) VisitBlock(node *ast.BlockStatement) interface{} { + v.at(node) + + v.pushBlock(node) + + var result interface{} + + // evaluate expression + expr := node.Expression.Accept(v) + + if v.isHelperCall(node.Expression) || v.wasFuncCall(node.Expression) { + // it is the responsability of the helper/function to evaluate block + result = expr + } else { + val := reflect.ValueOf(expr) + + truth, _ := isTrueValue(val) + if truth { + if node.Program != nil { + switch val.Kind() { + case reflect.Array, reflect.Slice: + concat := "" + + // Array context + for i := 0; i < val.Len(); i++ { + // Computes new private data frame + frame := v.dataFrame.newIterDataFrame(val.Len(), i, nil) + + // Evaluate program + concat += v.evalProgram(node.Program, val.Index(i).Interface(), frame, i) + } + + result = concat + default: + // NOT array + result = v.evalProgram(node.Program, expr, nil, nil) + } + } + } else if node.Inverse != nil { + result, _ = node.Inverse.Accept(v).(string) + } + } + + v.popBlock() + + return result +} + +// VisitPartial implements corresponding Visitor interface method +func (v *evalVisitor) VisitPartial(node *ast.PartialStatement) interface{} { + v.at(node) + + // partialName: helperName | sexpr + name, ok := ast.HelperNameStr(node.Name) + if !ok { + if subExpr, ok := node.Name.(*ast.SubExpression); ok { + name, _ = subExpr.Accept(v).(string) + } + } + + if name == "" { + v.errorf("Unexpected partial name: %q", node.Name) + } + + partial := v.findPartial(name) + if partial == nil { + v.errorf("Partial not found: %s", name) + } + + return v.evalPartial(partial, node) +} + +// VisitContent implements corresponding Visitor interface method +func (v *evalVisitor) VisitContent(node *ast.ContentStatement) interface{} { + v.at(node) + + // write content as is + return node.Value +} + +// VisitComment implements corresponding Visitor interface method +func (v *evalVisitor) VisitComment(node *ast.CommentStatement) interface{} { + v.at(node) + + // ignore comments + return "" +} + +// Expressions + +// VisitExpression implements corresponding Visitor interface method +func (v *evalVisitor) VisitExpression(node *ast.Expression) interface{} { + v.at(node) + + var result interface{} + done := false + + v.pushExpr(node) + + // helper call + if helperName := node.HelperName(); helperName != "" { + if helper := v.findHelper(helperName); helper != zero { + result = v.callHelper(helperName, helper, node) + done = true + } + } + + if !done { + // literal + if literal, ok := node.LiteralStr(); ok { + if val := v.evalField(v.curCtx(), literal, true); val.IsValid() { + result = val.Interface() + done = true + } + } + } + + if !done { + // field path + if path := node.FieldPath(); path != nil { + // @todo Find a cleaner way ! Don't break the pattern ! + // this is an exception to visitor pattern, because we need to pass the info + // that this path is at root of current expression + if val := v.evalPathExpression(path, true); val != nil { + result = val + } + } + } + + v.popExpr() + + return result +} + +// VisitSubExpression implements corresponding Visitor interface method +func (v *evalVisitor) VisitSubExpression(node *ast.SubExpression) interface{} { + v.at(node) + + return node.Expression.Accept(v) +} + +// VisitPath implements corresponding Visitor interface method +func (v *evalVisitor) VisitPath(node *ast.PathExpression) interface{} { + return v.evalPathExpression(node, false) +} + +// Literals + +// VisitString implements corresponding Visitor interface method +func (v *evalVisitor) VisitString(node *ast.StringLiteral) interface{} { + v.at(node) + + return node.Value +} + +// VisitBoolean implements corresponding Visitor interface method +func (v *evalVisitor) VisitBoolean(node *ast.BooleanLiteral) interface{} { + v.at(node) + + return node.Value +} + +// VisitNumber implements corresponding Visitor interface method +func (v *evalVisitor) VisitNumber(node *ast.NumberLiteral) interface{} { + v.at(node) + + return node.Number() +} + +// Miscellaneous + +// VisitHash implements corresponding Visitor interface method +func (v *evalVisitor) VisitHash(node *ast.Hash) interface{} { + v.at(node) + + result := make(map[string]interface{}) + + for _, pair := range node.Pairs { + if value := pair.Accept(v); value != nil { + result[pair.Key] = value + } + } + + return result +} + +// VisitHashPair implements corresponding Visitor interface method +func (v *evalVisitor) VisitHashPair(node *ast.HashPair) interface{} { + v.at(node) + + return node.Val.Accept(v) +} diff --git a/vendor/github.com/aymerick/raymond/helper.go b/vendor/github.com/aymerick/raymond/helper.go new file mode 100644 index 0000000..15c8309 --- /dev/null +++ b/vendor/github.com/aymerick/raymond/helper.go @@ -0,0 +1,382 @@ +package raymond + +import ( + "fmt" + "log" + "reflect" + "sync" +) + +// Options represents the options argument provided to helpers and context functions. +type Options struct { + // evaluation visitor + eval *evalVisitor + + // params + params []interface{} + hash map[string]interface{} +} + +// helpers stores all globally registered helpers +var helpers = make(map[string]reflect.Value) + +// protects global helpers +var helpersMutex sync.RWMutex + +func init() { + // register builtin helpers + RegisterHelper("if", ifHelper) + RegisterHelper("unless", unlessHelper) + RegisterHelper("with", withHelper) + RegisterHelper("each", eachHelper) + RegisterHelper("log", logHelper) + RegisterHelper("lookup", lookupHelper) + RegisterHelper("equal", equalHelper) +} + +// RegisterHelper registers a global helper. That helper will be available to all templates. +func RegisterHelper(name string, helper interface{}) { + helpersMutex.Lock() + defer helpersMutex.Unlock() + + if helpers[name] != zero { + panic(fmt.Errorf("Helper already registered: %s", name)) + } + + val := reflect.ValueOf(helper) + ensureValidHelper(name, val) + + helpers[name] = val +} + +// RegisterHelpers registers several global helpers. Those helpers will be available to all templates. +func RegisterHelpers(helpers map[string]interface{}) { + for name, helper := range helpers { + RegisterHelper(name, helper) + } +} + +// ensureValidHelper panics if given helper is not valid +func ensureValidHelper(name string, funcValue reflect.Value) { + if funcValue.Kind() != reflect.Func { + panic(fmt.Errorf("Helper must be a function: %s", name)) + } + + funcType := funcValue.Type() + + if funcType.NumOut() != 1 { + panic(fmt.Errorf("Helper function must return a string or a SafeString: %s", name)) + } + + // @todo Check if first returned value is a string, SafeString or interface{} ? +} + +// findHelper finds a globally registered helper +func findHelper(name string) reflect.Value { + helpersMutex.RLock() + defer helpersMutex.RUnlock() + + return helpers[name] +} + +// newOptions instanciates a new Options +func newOptions(eval *evalVisitor, params []interface{}, hash map[string]interface{}) *Options { + return &Options{ + eval: eval, + params: params, + hash: hash, + } +} + +// newEmptyOptions instanciates a new empty Options +func newEmptyOptions(eval *evalVisitor) *Options { + return &Options{ + eval: eval, + hash: make(map[string]interface{}), + } +} + +// +// Context Values +// + +// Value returns field value from current context. +func (options *Options) Value(name string) interface{} { + value := options.eval.evalField(options.eval.curCtx(), name, false) + if !value.IsValid() { + return nil + } + + return value.Interface() +} + +// ValueStr returns string representation of field value from current context. +func (options *Options) ValueStr(name string) string { + return Str(options.Value(name)) +} + +// Ctx returns current evaluation context. +func (options *Options) Ctx() interface{} { + return options.eval.curCtx().Interface() +} + +// +// Hash Arguments +// + +// HashProp returns hash property. +func (options *Options) HashProp(name string) interface{} { + return options.hash[name] +} + +// HashStr returns string representation of hash property. +func (options *Options) HashStr(name string) string { + return Str(options.hash[name]) +} + +// Hash returns entire hash. +func (options *Options) Hash() map[string]interface{} { + return options.hash +} + +// +// Parameters +// + +// Param returns parameter at given position. +func (options *Options) Param(pos int) interface{} { + if len(options.params) > pos { + return options.params[pos] + } + + return nil +} + +// ParamStr returns string representation of parameter at given position. +func (options *Options) ParamStr(pos int) string { + return Str(options.Param(pos)) +} + +// Params returns all parameters. +func (options *Options) Params() []interface{} { + return options.params +} + +// +// Private data +// + +// Data returns private data value. +func (options *Options) Data(name string) interface{} { + return options.eval.dataFrame.Get(name) +} + +// DataStr returns string representation of private data value. +func (options *Options) DataStr(name string) string { + return Str(options.eval.dataFrame.Get(name)) +} + +// DataFrame returns current private data frame. +func (options *Options) DataFrame() *DataFrame { + return options.eval.dataFrame +} + +// NewDataFrame instanciates a new data frame that is a copy of current evaluation data frame. +// +// Parent of returned data frame is set to current evaluation data frame. +func (options *Options) NewDataFrame() *DataFrame { + return options.eval.dataFrame.Copy() +} + +// newIterDataFrame instanciates a new data frame and set iteration specific vars +func (options *Options) newIterDataFrame(length int, i int, key interface{}) *DataFrame { + return options.eval.dataFrame.newIterDataFrame(length, i, key) +} + +// +// Evaluation +// + +// evalBlock evaluates block with given context, private data and iteration key +func (options *Options) evalBlock(ctx interface{}, data *DataFrame, key interface{}) string { + result := "" + + if block := options.eval.curBlock(); (block != nil) && (block.Program != nil) { + result = options.eval.evalProgram(block.Program, ctx, data, key) + } + + return result +} + +// Fn evaluates block with current evaluation context. +func (options *Options) Fn() string { + return options.evalBlock(nil, nil, nil) +} + +// FnCtxData evaluates block with given context and private data frame. +func (options *Options) FnCtxData(ctx interface{}, data *DataFrame) string { + return options.evalBlock(ctx, data, nil) +} + +// FnWith evaluates block with given context. +func (options *Options) FnWith(ctx interface{}) string { + return options.evalBlock(ctx, nil, nil) +} + +// FnData evaluates block with given private data frame. +func (options *Options) FnData(data *DataFrame) string { + return options.evalBlock(nil, data, nil) +} + +// Inverse evaluates "else block". +func (options *Options) Inverse() string { + result := "" + if block := options.eval.curBlock(); (block != nil) && (block.Inverse != nil) { + result, _ = block.Inverse.Accept(options.eval).(string) + } + + return result +} + +// Eval evaluates field for given context. +func (options *Options) Eval(ctx interface{}, field string) interface{} { + if ctx == nil { + return nil + } + + if field == "" { + return nil + } + + val := options.eval.evalField(reflect.ValueOf(ctx), field, false) + if !val.IsValid() { + return nil + } + + return val.Interface() +} + +// +// Misc +// + +// isIncludableZero returns true if 'includeZero' option is set and first param is the number 0 +func (options *Options) isIncludableZero() bool { + b, ok := options.HashProp("includeZero").(bool) + if ok && b { + nb, ok := options.Param(0).(int) + if ok && nb == 0 { + return true + } + } + + return false +} + +// +// Builtin helpers +// + +// #if block helper +func ifHelper(conditional interface{}, options *Options) interface{} { + if options.isIncludableZero() || IsTrue(conditional) { + return options.Fn() + } + + return options.Inverse() +} + +// #unless block helper +func unlessHelper(conditional interface{}, options *Options) interface{} { + if options.isIncludableZero() || IsTrue(conditional) { + return options.Inverse() + } + + return options.Fn() +} + +// #with block helper +func withHelper(context interface{}, options *Options) interface{} { + if IsTrue(context) { + return options.FnWith(context) + } + + return options.Inverse() +} + +// #each block helper +func eachHelper(context interface{}, options *Options) interface{} { + if !IsTrue(context) { + return options.Inverse() + } + + result := "" + + val := reflect.ValueOf(context) + switch val.Kind() { + case reflect.Array, reflect.Slice: + for i := 0; i < val.Len(); i++ { + // computes private data + data := options.newIterDataFrame(val.Len(), i, nil) + + // evaluates block + result += options.evalBlock(val.Index(i).Interface(), data, i) + } + case reflect.Map: + // note: a go hash is not ordered, so result may vary, this behaviour differs from the JS implementation + keys := val.MapKeys() + for i := 0; i < len(keys); i++ { + key := keys[i].Interface() + ctx := val.MapIndex(keys[i]).Interface() + + // computes private data + data := options.newIterDataFrame(len(keys), i, key) + + // evaluates block + result += options.evalBlock(ctx, data, key) + } + case reflect.Struct: + var exportedFields []int + + // collect exported fields only + for i := 0; i < val.NumField(); i++ { + if tField := val.Type().Field(i); tField.PkgPath == "" { + exportedFields = append(exportedFields, i) + } + } + + for i, fieldIndex := range exportedFields { + key := val.Type().Field(fieldIndex).Name + ctx := val.Field(fieldIndex).Interface() + + // computes private data + data := options.newIterDataFrame(len(exportedFields), i, key) + + // evaluates block + result += options.evalBlock(ctx, data, key) + } + } + + return result +} + +// #log helper +func logHelper(message string) interface{} { + log.Print(message) + return "" +} + +// #lookup helper +func lookupHelper(obj interface{}, field string, options *Options) interface{} { + return Str(options.Eval(obj, field)) +} + +// #equal helper +// Ref: https://github.com/aymerick/raymond/issues/7 +func equalHelper(a interface{}, b interface{}, options *Options) interface{} { + if Str(a) == Str(b) { + return options.Fn() + } + + return "" +} diff --git a/vendor/github.com/aymerick/raymond/lexer/lexer.go b/vendor/github.com/aymerick/raymond/lexer/lexer.go new file mode 100644 index 0000000..48899f8 --- /dev/null +++ b/vendor/github.com/aymerick/raymond/lexer/lexer.go @@ -0,0 +1,639 @@ +// Package lexer provides a handlebars tokenizer. +package lexer + +import ( + "fmt" + "regexp" + "strings" + "unicode" + "unicode/utf8" +) + +// References: +// - https://github.com/wycats/handlebars.js/blob/master/src/handlebars.l +// - https://github.com/golang/go/blob/master/src/text/template/parse/lex.go + +const ( + // Mustaches detection + escapedEscapedOpenMustache = "\\\\{{" + escapedOpenMustache = "\\{{" + openMustache = "{{" + closeMustache = "}}" + closeStripMustache = "~}}" + closeUnescapedStripMustache = "}~}}" +) + +const eof = -1 + +// lexFunc represents a function that returns the next lexer function. +type lexFunc func(*Lexer) lexFunc + +// Lexer is a lexical analyzer. +type Lexer struct { + input string // input to scan + name string // lexer name, used for testing purpose + tokens chan Token // channel of scanned tokens + nextFunc lexFunc // the next function to execute + + pos int // current byte position in input string + line int // current line position in input string + width int // size of last rune scanned from input string + start int // start position of the token we are scanning + + // the shameful contextual properties needed because `nextFunc` is not enough + closeComment *regexp.Regexp // regexp to scan close of current comment + rawBlock bool // are we parsing a raw block content ? +} + +var ( + lookheadChars = `[\s` + regexp.QuoteMeta("=~}/)|") + `]` + literalLookheadChars = `[\s` + regexp.QuoteMeta("~})") + `]` + + // characters not allowed in an identifier + unallowedIDChars = " \n\t!\"#%&'()*+,./;<=>@[\\]^`{|}~" + + // regular expressions + rID = regexp.MustCompile(`^[^` + regexp.QuoteMeta(unallowedIDChars) + `]+`) + rDotID = regexp.MustCompile(`^\.` + lookheadChars) + rTrue = regexp.MustCompile(`^true` + literalLookheadChars) + rFalse = regexp.MustCompile(`^false` + literalLookheadChars) + rOpenRaw = regexp.MustCompile(`^\{\{\{\{`) + rCloseRaw = regexp.MustCompile(`^\}\}\}\}`) + rOpenEndRaw = regexp.MustCompile(`^\{\{\{\{/`) + rOpenEndRawLookAhead = regexp.MustCompile(`\{\{\{\{/`) + rOpenUnescaped = regexp.MustCompile(`^\{\{~?\{`) + rCloseUnescaped = regexp.MustCompile(`^\}~?\}\}`) + rOpenBlock = regexp.MustCompile(`^\{\{~?#`) + rOpenEndBlock = regexp.MustCompile(`^\{\{~?/`) + rOpenPartial = regexp.MustCompile(`^\{\{~?>`) + // {{^}} or {{else}} + rInverse = regexp.MustCompile(`^(\{\{~?\^\s*~?\}\}|\{\{~?\s*else\s*~?\}\})`) + rOpenInverse = regexp.MustCompile(`^\{\{~?\^`) + rOpenInverseChain = regexp.MustCompile(`^\{\{~?\s*else`) + // {{ or {{& + rOpen = regexp.MustCompile(`^\{\{~?&?`) + rClose = regexp.MustCompile(`^~?\}\}`) + rOpenBlockParams = regexp.MustCompile(`^as\s+\|`) + // {{!-- ... --}} + rOpenCommentDash = regexp.MustCompile(`^\{\{~?!--\s*`) + rCloseCommentDash = regexp.MustCompile(`^\s*--~?\}\}`) + // {{! ... }} + rOpenComment = regexp.MustCompile(`^\{\{~?!\s*`) + rCloseComment = regexp.MustCompile(`^\s*~?\}\}`) +) + +// Scan scans given input. +// +// Tokens can then be fetched sequentially thanks to NextToken() function on returned lexer. +func Scan(input string) *Lexer { + return scanWithName(input, "") +} + +// scanWithName scans given input, with a name used for testing +// +// Tokens can then be fetched sequentially thanks to NextToken() function on returned lexer. +func scanWithName(input string, name string) *Lexer { + result := &Lexer{ + input: input, + name: name, + tokens: make(chan Token), + line: 1, + } + + go result.run() + + return result +} + +// Collect scans and collect all tokens. +// +// This should be used for debugging purpose only. You should use Scan() and lexer.NextToken() functions instead. +func Collect(input string) []Token { + var result []Token + + l := Scan(input) + for { + token := l.NextToken() + result = append(result, token) + + if token.Kind == TokenEOF || token.Kind == TokenError { + break + } + } + + return result +} + +// NextToken returns the next scanned token. +func (l *Lexer) NextToken() Token { + result := <-l.tokens + + return result +} + +// run starts lexical analysis +func (l *Lexer) run() { + for l.nextFunc = lexContent; l.nextFunc != nil; { + l.nextFunc = l.nextFunc(l) + } +} + +// next returns next character from input, or eof of there is nothing left to scan +func (l *Lexer) next() rune { + if l.pos >= len(l.input) { + l.width = 0 + return eof + } + + r, w := utf8.DecodeRuneInString(l.input[l.pos:]) + l.width = w + l.pos += l.width + + return r +} + +func (l *Lexer) produce(kind TokenKind, val string) { + l.tokens <- Token{kind, val, l.start, l.line} + + // scanning a new token + l.start = l.pos + + // update line number + l.line += strings.Count(val, "\n") +} + +// emit emits a new scanned token +func (l *Lexer) emit(kind TokenKind) { + l.produce(kind, l.input[l.start:l.pos]) +} + +// emitContent emits scanned content +func (l *Lexer) emitContent() { + if l.pos > l.start { + l.emit(TokenContent) + } +} + +// emitString emits a scanned string +func (l *Lexer) emitString(delimiter rune) { + str := l.input[l.start:l.pos] + + // replace escaped delimiters + str = strings.Replace(str, "\\"+string(delimiter), string(delimiter), -1) + + l.produce(TokenString, str) +} + +// peek returns but does not consume the next character in the input +func (l *Lexer) peek() rune { + r := l.next() + l.backup() + return r +} + +// backup steps back one character +// +// WARNING: Can only be called once per call of next +func (l *Lexer) backup() { + l.pos -= l.width +} + +// ignoreskips all characters that have been scanned up to current position +func (l *Lexer) ignore() { + l.start = l.pos +} + +// accept scans the next character if it is included in given string +func (l *Lexer) accept(valid string) bool { + if strings.IndexRune(valid, l.next()) >= 0 { + return true + } + + l.backup() + + return false +} + +// acceptRun scans all following characters that are part of given string +func (l *Lexer) acceptRun(valid string) { + for strings.IndexRune(valid, l.next()) >= 0 { + } + + l.backup() +} + +// errorf emits an error token +func (l *Lexer) errorf(format string, args ...interface{}) lexFunc { + l.tokens <- Token{TokenError, fmt.Sprintf(format, args...), l.start, l.line} + return nil +} + +// isString returns true if content at current scanning position starts with given string +func (l *Lexer) isString(str string) bool { + return strings.HasPrefix(l.input[l.pos:], str) +} + +// findRegexp returns the first string from current scanning position that matches given regular expression +func (l *Lexer) findRegexp(r *regexp.Regexp) string { + return r.FindString(l.input[l.pos:]) +} + +// indexRegexp returns the index of the first string from current scanning position that matches given regular expression +// +// It returns -1 if not found +func (l *Lexer) indexRegexp(r *regexp.Regexp) int { + loc := r.FindStringIndex(l.input[l.pos:]) + if loc == nil { + return -1 + } + return loc[0] +} + +// lexContent scans content (ie: not between mustaches) +func lexContent(l *Lexer) lexFunc { + var next lexFunc + + if l.rawBlock { + if i := l.indexRegexp(rOpenEndRawLookAhead); i != -1 { + // {{{{/ + l.rawBlock = false + l.pos += i + + next = lexOpenMustache + } else { + return l.errorf("Unclosed raw block") + } + } else if l.isString(escapedEscapedOpenMustache) { + // \\{{ + + // emit content with only one escaped escape + l.next() + l.emitContent() + + // ignore second escaped escape + l.next() + l.ignore() + + next = lexContent + } else if l.isString(escapedOpenMustache) { + // \{{ + next = lexEscapedOpenMustache + } else if str := l.findRegexp(rOpenCommentDash); str != "" { + // {{!-- + l.closeComment = rCloseCommentDash + + next = lexComment + } else if str := l.findRegexp(rOpenComment); str != "" { + // {{! + l.closeComment = rCloseComment + + next = lexComment + } else if l.isString(openMustache) { + // {{ + next = lexOpenMustache + } + + if next != nil { + // emit scanned content + l.emitContent() + + // scan next token + return next + } + + // scan next rune + if l.next() == eof { + // emit scanned content + l.emitContent() + + // this is over + l.emit(TokenEOF) + return nil + } + + // continue content scanning + return lexContent +} + +// lexEscapedOpenMustache scans \{{ +func lexEscapedOpenMustache(l *Lexer) lexFunc { + // ignore escape character + l.next() + l.ignore() + + // scan mustaches + for l.peek() == '{' { + l.next() + } + + return lexContent +} + +// lexOpenMustache scans {{ +func lexOpenMustache(l *Lexer) lexFunc { + var str string + var tok TokenKind + + nextFunc := lexExpression + + if str = l.findRegexp(rOpenEndRaw); str != "" { + tok = TokenOpenEndRawBlock + } else if str = l.findRegexp(rOpenRaw); str != "" { + tok = TokenOpenRawBlock + l.rawBlock = true + } else if str = l.findRegexp(rOpenUnescaped); str != "" { + tok = TokenOpenUnescaped + } else if str = l.findRegexp(rOpenBlock); str != "" { + tok = TokenOpenBlock + } else if str = l.findRegexp(rOpenEndBlock); str != "" { + tok = TokenOpenEndBlock + } else if str = l.findRegexp(rOpenPartial); str != "" { + tok = TokenOpenPartial + } else if str = l.findRegexp(rInverse); str != "" { + tok = TokenInverse + nextFunc = lexContent + } else if str = l.findRegexp(rOpenInverse); str != "" { + tok = TokenOpenInverse + } else if str = l.findRegexp(rOpenInverseChain); str != "" { + tok = TokenOpenInverseChain + } else if str = l.findRegexp(rOpen); str != "" { + tok = TokenOpen + } else { + // this is rotten + panic("Current pos MUST be an opening mustache") + } + + l.pos += len(str) + l.emit(tok) + + return nextFunc +} + +// lexCloseMustache scans }} or ~}} +func lexCloseMustache(l *Lexer) lexFunc { + var str string + var tok TokenKind + + if str = l.findRegexp(rCloseRaw); str != "" { + // }}}} + tok = TokenCloseRawBlock + } else if str = l.findRegexp(rCloseUnescaped); str != "" { + // }}} + tok = TokenCloseUnescaped + } else if str = l.findRegexp(rClose); str != "" { + // }} + tok = TokenClose + } else { + // this is rotten + panic("Current pos MUST be a closing mustache") + } + + l.pos += len(str) + l.emit(tok) + + return lexContent +} + +// lexExpression scans inside mustaches +func lexExpression(l *Lexer) lexFunc { + // search close mustache delimiter + if l.isString(closeMustache) || l.isString(closeStripMustache) || l.isString(closeUnescapedStripMustache) { + return lexCloseMustache + } + + // search some patterns before advancing scanning position + + // "as |" + if str := l.findRegexp(rOpenBlockParams); str != "" { + l.pos += len(str) + l.emit(TokenOpenBlockParams) + return lexExpression + } + + // .. + if l.isString("..") { + l.pos += len("..") + l.emit(TokenID) + return lexExpression + } + + // . + if str := l.findRegexp(rDotID); str != "" { + l.pos += len(".") + l.emit(TokenID) + return lexExpression + } + + // true + if str := l.findRegexp(rTrue); str != "" { + l.pos += len("true") + l.emit(TokenBoolean) + return lexExpression + } + + // false + if str := l.findRegexp(rFalse); str != "" { + l.pos += len("false") + l.emit(TokenBoolean) + return lexExpression + } + + // let's scan next character + switch r := l.next(); { + case r == eof: + return l.errorf("Unclosed expression") + case isIgnorable(r): + return lexIgnorable + case r == '(': + l.emit(TokenOpenSexpr) + case r == ')': + l.emit(TokenCloseSexpr) + case r == '=': + l.emit(TokenEquals) + case r == '@': + l.emit(TokenData) + case r == '"' || r == '\'': + l.backup() + return lexString + case r == '/' || r == '.': + l.emit(TokenSep) + case r == '|': + l.emit(TokenCloseBlockParams) + case r == '+' || r == '-' || (r >= '0' && r <= '9'): + l.backup() + return lexNumber + case r == '[': + return lexPathLiteral + case strings.IndexRune(unallowedIDChars, r) < 0: + l.backup() + return lexIdentifier + default: + return l.errorf("Unexpected character in expression: '%c'", r) + } + + return lexExpression +} + +// lexComment scans {{!-- or {{! +func lexComment(l *Lexer) lexFunc { + if str := l.findRegexp(l.closeComment); str != "" { + l.pos += len(str) + l.emit(TokenComment) + + return lexContent + } + + if r := l.next(); r == eof { + return l.errorf("Unclosed comment") + } + + return lexComment +} + +// lexIgnorable scans all following ignorable characters +func lexIgnorable(l *Lexer) lexFunc { + for isIgnorable(l.peek()) { + l.next() + } + l.ignore() + + return lexExpression +} + +// lexString scans a string +func lexString(l *Lexer) lexFunc { + // get string delimiter + delim := l.next() + var prev rune + + // ignore delimiter + l.ignore() + + for { + r := l.next() + if r == eof || r == '\n' { + return l.errorf("Unterminated string") + } + + if (r == delim) && (prev != '\\') { + break + } + + prev = r + } + + // remove end delimiter + l.backup() + + // emit string + l.emitString(delim) + + // skip end delimiter + l.next() + l.ignore() + + return lexExpression +} + +// lexNumber scans a number: decimal, octal, hex, float, or imaginary. This +// isn't a perfect number scanner - for instance it accepts "." and "0x0.2" +// and "089" - but when it's wrong the input is invalid and the parser (via +// strconv) will notice. +// +// NOTE: borrowed from https://github.com/golang/go/tree/master/src/text/template/parse/lex.go +func lexNumber(l *Lexer) lexFunc { + if !l.scanNumber() { + return l.errorf("bad number syntax: %q", l.input[l.start:l.pos]) + } + if sign := l.peek(); sign == '+' || sign == '-' { + // Complex: 1+2i. No spaces, must end in 'i'. + if !l.scanNumber() || l.input[l.pos-1] != 'i' { + return l.errorf("bad number syntax: %q", l.input[l.start:l.pos]) + } + l.emit(TokenNumber) + } else { + l.emit(TokenNumber) + } + return lexExpression +} + +// scanNumber scans a number +// +// NOTE: borrowed from https://github.com/golang/go/tree/master/src/text/template/parse/lex.go +func (l *Lexer) scanNumber() bool { + // Optional leading sign. + l.accept("+-") + + // Is it hex? + digits := "0123456789" + + if l.accept("0") && l.accept("xX") { + digits = "0123456789abcdefABCDEF" + } + + l.acceptRun(digits) + + if l.accept(".") { + l.acceptRun(digits) + } + + if l.accept("eE") { + l.accept("+-") + l.acceptRun("0123456789") + } + + // Is it imaginary? + l.accept("i") + + // Next thing mustn't be alphanumeric. + if isAlphaNumeric(l.peek()) { + l.next() + return false + } + + return true +} + +// lexIdentifier scans an ID +func lexIdentifier(l *Lexer) lexFunc { + str := l.findRegexp(rID) + if len(str) == 0 { + // this is rotten + panic("Identifier expected") + } + + l.pos += len(str) + l.emit(TokenID) + + return lexExpression +} + +// lexPathLiteral scans an [ID] +func lexPathLiteral(l *Lexer) lexFunc { + for { + r := l.next() + if r == eof || r == '\n' { + return l.errorf("Unterminated path literal") + } + + if r == ']' { + break + } + } + + l.emit(TokenID) + + return lexExpression +} + +// isIgnorable returns true if given character is ignorable (ie. whitespace of line feed) +func isIgnorable(r rune) bool { + return r == ' ' || r == '\t' || r == '\n' +} + +// isAlphaNumeric reports whether r is an alphabetic, digit, or underscore. +// +// NOTE borrowed from https://github.com/golang/go/tree/master/src/text/template/parse/lex.go +func isAlphaNumeric(r rune) bool { + return r == '_' || unicode.IsLetter(r) || unicode.IsDigit(r) +} diff --git a/vendor/github.com/aymerick/raymond/lexer/token.go b/vendor/github.com/aymerick/raymond/lexer/token.go new file mode 100644 index 0000000..13cf2e6 --- /dev/null +++ b/vendor/github.com/aymerick/raymond/lexer/token.go @@ -0,0 +1,183 @@ +package lexer + +import "fmt" + +const ( + // TokenError represents an error + TokenError TokenKind = iota + + // TokenEOF represents an End Of File + TokenEOF + + // + // Mustache delimiters + // + + // TokenOpen is the OPEN token + TokenOpen + + // TokenClose is the CLOSE token + TokenClose + + // TokenOpenRawBlock is the OPEN_RAW_BLOCK token + TokenOpenRawBlock + + // TokenCloseRawBlock is the CLOSE_RAW_BLOCK token + TokenCloseRawBlock + + // TokenOpenEndRawBlock is the END_RAW_BLOCK token + TokenOpenEndRawBlock + + // TokenOpenUnescaped is the OPEN_UNESCAPED token + TokenOpenUnescaped + + // TokenCloseUnescaped is the CLOSE_UNESCAPED token + TokenCloseUnescaped + + // TokenOpenBlock is the OPEN_BLOCK token + TokenOpenBlock + + // TokenOpenEndBlock is the OPEN_ENDBLOCK token + TokenOpenEndBlock + + // TokenInverse is the INVERSE token + TokenInverse + + // TokenOpenInverse is the OPEN_INVERSE token + TokenOpenInverse + + // TokenOpenInverseChain is the OPEN_INVERSE_CHAIN token + TokenOpenInverseChain + + // TokenOpenPartial is the OPEN_PARTIAL token + TokenOpenPartial + + // TokenComment is the COMMENT token + TokenComment + + // + // Inside mustaches + // + + // TokenOpenSexpr is the OPEN_SEXPR token + TokenOpenSexpr + + // TokenCloseSexpr is the CLOSE_SEXPR token + TokenCloseSexpr + + // TokenEquals is the EQUALS token + TokenEquals + + // TokenData is the DATA token + TokenData + + // TokenSep is the SEP token + TokenSep + + // TokenOpenBlockParams is the OPEN_BLOCK_PARAMS token + TokenOpenBlockParams + + // TokenCloseBlockParams is the CLOSE_BLOCK_PARAMS token + TokenCloseBlockParams + + // + // Tokens with content + // + + // TokenContent is the CONTENT token + TokenContent + + // TokenID is the ID token + TokenID + + // TokenString is the STRING token + TokenString + + // TokenNumber is the NUMBER token + TokenNumber + + // TokenBoolean is the BOOLEAN token + TokenBoolean +) + +const ( + // Option to generate token position in its string representation + dumpTokenPos = false + + // Option to generate values for all token kinds for their string representations + dumpAllTokensVal = true +) + +// TokenKind represents a Token type. +type TokenKind int + +// Token represents a scanned token. +type Token struct { + Kind TokenKind // Token kind + Val string // Token value + + Pos int // Byte position in input string + Line int // Line number in input string +} + +// tokenName permits to display token name given token type +var tokenName = map[TokenKind]string{ + TokenError: "Error", + TokenEOF: "EOF", + TokenContent: "Content", + TokenComment: "Comment", + TokenOpen: "Open", + TokenClose: "Close", + TokenOpenUnescaped: "OpenUnescaped", + TokenCloseUnescaped: "CloseUnescaped", + TokenOpenBlock: "OpenBlock", + TokenOpenEndBlock: "OpenEndBlock", + TokenOpenRawBlock: "OpenRawBlock", + TokenCloseRawBlock: "CloseRawBlock", + TokenOpenEndRawBlock: "OpenEndRawBlock", + TokenOpenBlockParams: "OpenBlockParams", + TokenCloseBlockParams: "CloseBlockParams", + TokenInverse: "Inverse", + TokenOpenInverse: "OpenInverse", + TokenOpenInverseChain: "OpenInverseChain", + TokenOpenPartial: "OpenPartial", + TokenOpenSexpr: "OpenSexpr", + TokenCloseSexpr: "CloseSexpr", + TokenID: "ID", + TokenEquals: "Equals", + TokenString: "String", + TokenNumber: "Number", + TokenBoolean: "Boolean", + TokenData: "Data", + TokenSep: "Sep", +} + +// String returns the token kind string representation for debugging. +func (k TokenKind) String() string { + s := tokenName[k] + if s == "" { + return fmt.Sprintf("Token-%d", int(k)) + } + return s +} + +// String returns the token string representation for debugging. +func (t Token) String() string { + result := "" + + if dumpTokenPos { + result += fmt.Sprintf("%d:", t.Pos) + } + + result += fmt.Sprintf("%s", t.Kind) + + if (dumpAllTokensVal || (t.Kind >= TokenContent)) && len(t.Val) > 0 { + if len(t.Val) > 100 { + result += fmt.Sprintf("{%.20q...}", t.Val) + } else { + result += fmt.Sprintf("{%q}", t.Val) + } + } + + return result +} diff --git a/vendor/github.com/aymerick/raymond/parser/parser.go b/vendor/github.com/aymerick/raymond/parser/parser.go new file mode 100644 index 0000000..22eed3c --- /dev/null +++ b/vendor/github.com/aymerick/raymond/parser/parser.go @@ -0,0 +1,846 @@ +// Package parser provides a handlebars syntax analyser. It consumes the tokens provided by the lexer to build an AST. +package parser + +import ( + "fmt" + "regexp" + "runtime" + "strconv" + + "github.com/aymerick/raymond/ast" + "github.com/aymerick/raymond/lexer" +) + +// References: +// - https://github.com/wycats/handlebars.js/blob/master/src/handlebars.yy +// - https://github.com/golang/go/blob/master/src/text/template/parse/parse.go + +// parser is a syntax analyzer. +type parser struct { + // Lexer + lex *lexer.Lexer + + // Root node + root ast.Node + + // Tokens parsed but not consumed yet + tokens []*lexer.Token + + // All tokens have been retreieved from lexer + lexOver bool +} + +var ( + rOpenComment = regexp.MustCompile(`^\{\{~?!-?-?`) + rCloseComment = regexp.MustCompile(`-?-?~?\}\}$`) + rOpenAmp = regexp.MustCompile(`^\{\{~?&`) +) + +// new instanciates a new parser +func new(input string) *parser { + return &parser{ + lex: lexer.Scan(input), + } +} + +// Parse analyzes given input and returns the AST root node. +func Parse(input string) (result *ast.Program, err error) { + // recover error + defer errRecover(&err) + + parser := new(input) + + // parse + result = parser.parseProgram() + + // check last token + token := parser.shift() + if token.Kind != lexer.TokenEOF { + // Parsing ended before EOF + errToken(token, "Syntax error") + } + + // fix whitespaces + processWhitespaces(result) + + // named returned values + return +} + +// errRecover recovers parsing panic +func errRecover(errp *error) { + e := recover() + if e != nil { + switch err := e.(type) { + case runtime.Error: + panic(e) + case error: + *errp = err + default: + panic(e) + } + } +} + +// errPanic panics +func errPanic(err error, line int) { + panic(fmt.Errorf("Parse error on line %d:\n%s", line, err)) +} + +// errNode panics with given node infos +func errNode(node ast.Node, msg string) { + errPanic(fmt.Errorf("%s\nNode: %s", msg, node), node.Location().Line) +} + +// errNode panics with given Token infos +func errToken(tok *lexer.Token, msg string) { + errPanic(fmt.Errorf("%s\nToken: %s", msg, tok), tok.Line) +} + +// errNode panics because of an unexpected Token kind +func errExpected(expect lexer.TokenKind, tok *lexer.Token) { + errPanic(fmt.Errorf("Expecting %s, got: '%s'", expect, tok), tok.Line) +} + +// program : statement* +func (p *parser) parseProgram() *ast.Program { + result := ast.NewProgram(p.next().Pos, p.next().Line) + + for p.isStatement() { + result.AddStatement(p.parseStatement()) + } + + return result +} + +// statement : mustache | block | rawBlock | partial | content | COMMENT +func (p *parser) parseStatement() ast.Node { + var result ast.Node + + tok := p.next() + + switch tok.Kind { + case lexer.TokenOpen, lexer.TokenOpenUnescaped: + // mustache + result = p.parseMustache() + case lexer.TokenOpenBlock: + // block + result = p.parseBlock() + case lexer.TokenOpenInverse: + // block + result = p.parseInverse() + case lexer.TokenOpenRawBlock: + // rawBlock + result = p.parseRawBlock() + case lexer.TokenOpenPartial: + // partial + result = p.parsePartial() + case lexer.TokenContent: + // content + result = p.parseContent() + case lexer.TokenComment: + // COMMENT + result = p.parseComment() + } + + return result +} + +// isStatement returns true if next token starts a statement +func (p *parser) isStatement() bool { + if !p.have(1) { + return false + } + + switch p.next().Kind { + case lexer.TokenOpen, lexer.TokenOpenUnescaped, lexer.TokenOpenBlock, + lexer.TokenOpenInverse, lexer.TokenOpenRawBlock, lexer.TokenOpenPartial, + lexer.TokenContent, lexer.TokenComment: + return true + } + + return false +} + +// content : CONTENT +func (p *parser) parseContent() *ast.ContentStatement { + // CONTENT + tok := p.shift() + if tok.Kind != lexer.TokenContent { + // @todo This check can be removed if content is optional in a raw block + errExpected(lexer.TokenContent, tok) + } + + return ast.NewContentStatement(tok.Pos, tok.Line, tok.Val) +} + +// COMMENT +func (p *parser) parseComment() *ast.CommentStatement { + // COMMENT + tok := p.shift() + + value := rOpenComment.ReplaceAllString(tok.Val, "") + value = rCloseComment.ReplaceAllString(value, "") + + result := ast.NewCommentStatement(tok.Pos, tok.Line, value) + result.Strip = ast.NewStripForStr(tok.Val) + + return result +} + +// param* hash? +func (p *parser) parseExpressionParamsHash() ([]ast.Node, *ast.Hash) { + var params []ast.Node + var hash *ast.Hash + + // params* + if p.isParam() { + params = p.parseParams() + } + + // hash? + if p.isHashSegment() { + hash = p.parseHash() + } + + return params, hash +} + +// helperName param* hash? +func (p *parser) parseExpression(tok *lexer.Token) *ast.Expression { + result := ast.NewExpression(tok.Pos, tok.Line) + + // helperName + result.Path = p.parseHelperName() + + // param* hash? + result.Params, result.Hash = p.parseExpressionParamsHash() + + return result +} + +// rawBlock : openRawBlock content endRawBlock +// openRawBlock : OPEN_RAW_BLOCK helperName param* hash? CLOSE_RAW_BLOCK +// endRawBlock : OPEN_END_RAW_BLOCK helperName CLOSE_RAW_BLOCK +func (p *parser) parseRawBlock() *ast.BlockStatement { + // OPEN_RAW_BLOCK + tok := p.shift() + + result := ast.NewBlockStatement(tok.Pos, tok.Line) + + // helperName param* hash? + result.Expression = p.parseExpression(tok) + + openName := result.Expression.Canonical() + + // CLOSE_RAW_BLOCK + tok = p.shift() + if tok.Kind != lexer.TokenCloseRawBlock { + errExpected(lexer.TokenCloseRawBlock, tok) + } + + // content + // @todo Is content mandatory in a raw block ? + content := p.parseContent() + + program := ast.NewProgram(tok.Pos, tok.Line) + program.AddStatement(content) + + result.Program = program + + // OPEN_END_RAW_BLOCK + tok = p.shift() + if tok.Kind != lexer.TokenOpenEndRawBlock { + // should never happen as it is caught by lexer + errExpected(lexer.TokenOpenEndRawBlock, tok) + } + + // helperName + endID := p.parseHelperName() + + closeName, ok := ast.HelperNameStr(endID) + if !ok { + errNode(endID, "Erroneous closing expression") + } + + if openName != closeName { + errNode(endID, fmt.Sprintf("%s doesn't match %s", openName, closeName)) + } + + // CLOSE_RAW_BLOCK + tok = p.shift() + if tok.Kind != lexer.TokenCloseRawBlock { + errExpected(lexer.TokenCloseRawBlock, tok) + } + + return result +} + +// block : openBlock program inverseChain? closeBlock +func (p *parser) parseBlock() *ast.BlockStatement { + // openBlock + result, blockParams := p.parseOpenBlock() + + // program + program := p.parseProgram() + program.BlockParams = blockParams + result.Program = program + + // inverseChain? + if p.isInverseChain() { + result.Inverse = p.parseInverseChain() + } + + // closeBlock + p.parseCloseBlock(result) + + setBlockInverseStrip(result) + + return result +} + +// setBlockInverseStrip is called when parsing `block` (openBlock | openInverse) and `inverseChain` +// +// TODO: This was totally cargo culted ! CHECK THAT ! +// +// cf. prepareBlock() in: +// https://github.com/wycats/handlebars.js/blob/master/lib/handlebars/compiler/helper.js +func setBlockInverseStrip(block *ast.BlockStatement) { + if block.Inverse == nil { + return + } + + if block.Inverse.Chained { + b, _ := block.Inverse.Body[0].(*ast.BlockStatement) + b.CloseStrip = block.CloseStrip + } + + block.InverseStrip = block.Inverse.Strip +} + +// block : openInverse program inverseAndProgram? closeBlock +func (p *parser) parseInverse() *ast.BlockStatement { + // openInverse + result, blockParams := p.parseOpenBlock() + + // program + program := p.parseProgram() + + program.BlockParams = blockParams + result.Inverse = program + + // inverseAndProgram? + if p.isInverse() { + result.Program = p.parseInverseAndProgram() + } + + // closeBlock + p.parseCloseBlock(result) + + setBlockInverseStrip(result) + + return result +} + +// helperName param* hash? blockParams? +func (p *parser) parseOpenBlockExpression(tok *lexer.Token) (*ast.BlockStatement, []string) { + var blockParams []string + + result := ast.NewBlockStatement(tok.Pos, tok.Line) + + // helperName param* hash? + result.Expression = p.parseExpression(tok) + + // blockParams? + if p.isBlockParams() { + blockParams = p.parseBlockParams() + } + + // named returned values + return result, blockParams +} + +// inverseChain : openInverseChain program inverseChain? +// | inverseAndProgram +func (p *parser) parseInverseChain() *ast.Program { + if p.isInverse() { + // inverseAndProgram + return p.parseInverseAndProgram() + } + + result := ast.NewProgram(p.next().Pos, p.next().Line) + + // openInverseChain + block, blockParams := p.parseOpenBlock() + + // program + program := p.parseProgram() + + program.BlockParams = blockParams + block.Program = program + + // inverseChain? + if p.isInverseChain() { + block.Inverse = p.parseInverseChain() + } + + setBlockInverseStrip(block) + + result.Chained = true + result.AddStatement(block) + + return result +} + +// Returns true if current token starts an inverse chain +func (p *parser) isInverseChain() bool { + return p.isOpenInverseChain() || p.isInverse() +} + +// inverseAndProgram : INVERSE program +func (p *parser) parseInverseAndProgram() *ast.Program { + // INVERSE + tok := p.shift() + + // program + result := p.parseProgram() + result.Strip = ast.NewStripForStr(tok.Val) + + return result +} + +// openBlock : OPEN_BLOCK helperName param* hash? blockParams? CLOSE +// openInverse : OPEN_INVERSE helperName param* hash? blockParams? CLOSE +// openInverseChain: OPEN_INVERSE_CHAIN helperName param* hash? blockParams? CLOSE +func (p *parser) parseOpenBlock() (*ast.BlockStatement, []string) { + // OPEN_BLOCK | OPEN_INVERSE | OPEN_INVERSE_CHAIN + tok := p.shift() + + // helperName param* hash? blockParams? + result, blockParams := p.parseOpenBlockExpression(tok) + + // CLOSE + tokClose := p.shift() + if tokClose.Kind != lexer.TokenClose { + errExpected(lexer.TokenClose, tokClose) + } + + result.OpenStrip = ast.NewStrip(tok.Val, tokClose.Val) + + // named returned values + return result, blockParams +} + +// closeBlock : OPEN_ENDBLOCK helperName CLOSE +func (p *parser) parseCloseBlock(block *ast.BlockStatement) { + // OPEN_ENDBLOCK + tok := p.shift() + if tok.Kind != lexer.TokenOpenEndBlock { + errExpected(lexer.TokenOpenEndBlock, tok) + } + + // helperName + endID := p.parseHelperName() + + closeName, ok := ast.HelperNameStr(endID) + if !ok { + errNode(endID, "Erroneous closing expression") + } + + openName := block.Expression.Canonical() + if openName != closeName { + errNode(endID, fmt.Sprintf("%s doesn't match %s", openName, closeName)) + } + + // CLOSE + tokClose := p.shift() + if tokClose.Kind != lexer.TokenClose { + errExpected(lexer.TokenClose, tokClose) + } + + block.CloseStrip = ast.NewStrip(tok.Val, tokClose.Val) +} + +// mustache : OPEN helperName param* hash? CLOSE +// | OPEN_UNESCAPED helperName param* hash? CLOSE_UNESCAPED +func (p *parser) parseMustache() *ast.MustacheStatement { + // OPEN | OPEN_UNESCAPED + tok := p.shift() + + closeToken := lexer.TokenClose + if tok.Kind == lexer.TokenOpenUnescaped { + closeToken = lexer.TokenCloseUnescaped + } + + unescaped := false + if (tok.Kind == lexer.TokenOpenUnescaped) || (rOpenAmp.MatchString(tok.Val)) { + unescaped = true + } + + result := ast.NewMustacheStatement(tok.Pos, tok.Line, unescaped) + + // helperName param* hash? + result.Expression = p.parseExpression(tok) + + // CLOSE | CLOSE_UNESCAPED + tokClose := p.shift() + if tokClose.Kind != closeToken { + errExpected(closeToken, tokClose) + } + + result.Strip = ast.NewStrip(tok.Val, tokClose.Val) + + return result +} + +// partial : OPEN_PARTIAL partialName param* hash? CLOSE +func (p *parser) parsePartial() *ast.PartialStatement { + // OPEN_PARTIAL + tok := p.shift() + + result := ast.NewPartialStatement(tok.Pos, tok.Line) + + // partialName + result.Name = p.parsePartialName() + + // param* hash? + result.Params, result.Hash = p.parseExpressionParamsHash() + + // CLOSE + tokClose := p.shift() + if tokClose.Kind != lexer.TokenClose { + errExpected(lexer.TokenClose, tokClose) + } + + result.Strip = ast.NewStrip(tok.Val, tokClose.Val) + + return result +} + +// helperName | sexpr +func (p *parser) parseHelperNameOrSexpr() ast.Node { + if p.isSexpr() { + // sexpr + return p.parseSexpr() + } + + // helperName + return p.parseHelperName() +} + +// param : helperName | sexpr +func (p *parser) parseParam() ast.Node { + return p.parseHelperNameOrSexpr() +} + +// Returns true if next tokens represent a `param` +func (p *parser) isParam() bool { + return (p.isSexpr() || p.isHelperName()) && !p.isHashSegment() +} + +// param* +func (p *parser) parseParams() []ast.Node { + var result []ast.Node + + for p.isParam() { + result = append(result, p.parseParam()) + } + + return result +} + +// sexpr : OPEN_SEXPR helperName param* hash? CLOSE_SEXPR +func (p *parser) parseSexpr() *ast.SubExpression { + // OPEN_SEXPR + tok := p.shift() + + result := ast.NewSubExpression(tok.Pos, tok.Line) + + // helperName param* hash? + result.Expression = p.parseExpression(tok) + + // CLOSE_SEXPR + tok = p.shift() + if tok.Kind != lexer.TokenCloseSexpr { + errExpected(lexer.TokenCloseSexpr, tok) + } + + return result +} + +// hash : hashSegment+ +func (p *parser) parseHash() *ast.Hash { + var pairs []*ast.HashPair + + for p.isHashSegment() { + pairs = append(pairs, p.parseHashSegment()) + } + + firstLoc := pairs[0].Location() + + result := ast.NewHash(firstLoc.Pos, firstLoc.Line) + result.Pairs = pairs + + return result +} + +// returns true if next tokens represents a `hashSegment` +func (p *parser) isHashSegment() bool { + return p.have(2) && (p.next().Kind == lexer.TokenID) && (p.nextAt(1).Kind == lexer.TokenEquals) +} + +// hashSegment : ID EQUALS param +func (p *parser) parseHashSegment() *ast.HashPair { + // ID + tok := p.shift() + + // EQUALS + p.shift() + + // param + param := p.parseParam() + + result := ast.NewHashPair(tok.Pos, tok.Line) + result.Key = tok.Val + result.Val = param + + return result +} + +// blockParams : OPEN_BLOCK_PARAMS ID+ CLOSE_BLOCK_PARAMS +func (p *parser) parseBlockParams() []string { + var result []string + + // OPEN_BLOCK_PARAMS + tok := p.shift() + + // ID+ + for p.isID() { + result = append(result, p.shift().Val) + } + + if len(result) == 0 { + errExpected(lexer.TokenID, p.next()) + } + + // CLOSE_BLOCK_PARAMS + tok = p.shift() + if tok.Kind != lexer.TokenCloseBlockParams { + errExpected(lexer.TokenCloseBlockParams, tok) + } + + return result +} + +// helperName : path | dataName | STRING | NUMBER | BOOLEAN | UNDEFINED | NULL +func (p *parser) parseHelperName() ast.Node { + var result ast.Node + + tok := p.next() + + switch tok.Kind { + case lexer.TokenBoolean: + // BOOLEAN + p.shift() + result = ast.NewBooleanLiteral(tok.Pos, tok.Line, (tok.Val == "true"), tok.Val) + case lexer.TokenNumber: + // NUMBER + p.shift() + + val, isInt := parseNumber(tok) + result = ast.NewNumberLiteral(tok.Pos, tok.Line, val, isInt, tok.Val) + case lexer.TokenString: + // STRING + p.shift() + result = ast.NewStringLiteral(tok.Pos, tok.Line, tok.Val) + case lexer.TokenData: + // dataName + result = p.parseDataName() + default: + // path + result = p.parsePath(false) + } + + return result +} + +// parseNumber parses a number +func parseNumber(tok *lexer.Token) (result float64, isInt bool) { + var valInt int + var err error + + valInt, err = strconv.Atoi(tok.Val) + if err == nil { + isInt = true + + result = float64(valInt) + } else { + isInt = false + + result, err = strconv.ParseFloat(tok.Val, 64) + if err != nil { + errToken(tok, fmt.Sprintf("Failed to parse number: %s", tok.Val)) + } + } + + // named returned values + return +} + +// Returns true if next tokens represent a `helperName` +func (p *parser) isHelperName() bool { + switch p.next().Kind { + case lexer.TokenBoolean, lexer.TokenNumber, lexer.TokenString, lexer.TokenData, lexer.TokenID: + return true + } + + return false +} + +// partialName : helperName | sexpr +func (p *parser) parsePartialName() ast.Node { + return p.parseHelperNameOrSexpr() +} + +// dataName : DATA pathSegments +func (p *parser) parseDataName() *ast.PathExpression { + // DATA + p.shift() + + // pathSegments + return p.parsePath(true) +} + +// path : pathSegments +// pathSegments : pathSegments SEP ID +// | ID +func (p *parser) parsePath(data bool) *ast.PathExpression { + var tok *lexer.Token + + // ID + tok = p.shift() + if tok.Kind != lexer.TokenID { + errExpected(lexer.TokenID, tok) + } + + result := ast.NewPathExpression(tok.Pos, tok.Line, data) + result.Part(tok.Val) + + for p.isPathSep() { + // SEP + tok = p.shift() + result.Sep(tok.Val) + + // ID + tok = p.shift() + if tok.Kind != lexer.TokenID { + errExpected(lexer.TokenID, tok) + } + + result.Part(tok.Val) + + if len(result.Parts) > 0 { + switch tok.Val { + case "..", ".", "this": + errToken(tok, "Invalid path: "+result.Original) + } + } + } + + return result +} + +// Ensures there is token to parse at given index +func (p *parser) ensure(index int) { + if p.lexOver { + // nothing more to grab + return + } + + nb := index + 1 + + for len(p.tokens) < nb { + // fetch next token + tok := p.lex.NextToken() + + // queue it + p.tokens = append(p.tokens, &tok) + + if (tok.Kind == lexer.TokenEOF) || (tok.Kind == lexer.TokenError) { + p.lexOver = true + break + } + } +} + +// have returns true is there are a list given number of tokens to consume left +func (p *parser) have(nb int) bool { + p.ensure(nb - 1) + + return len(p.tokens) >= nb +} + +// nextAt returns next token at given index, without consuming it +func (p *parser) nextAt(index int) *lexer.Token { + p.ensure(index) + + return p.tokens[index] +} + +// next returns next token without consuming it +func (p *parser) next() *lexer.Token { + return p.nextAt(0) +} + +// shift returns next token and remove it from the tokens buffer +// +// Panics if next token is `TokenError` +func (p *parser) shift() *lexer.Token { + var result *lexer.Token + + p.ensure(0) + + result, p.tokens = p.tokens[0], p.tokens[1:] + + // check error token + if result.Kind == lexer.TokenError { + errToken(result, "Lexer error") + } + + return result +} + +// isToken returns true if next token is of given type +func (p *parser) isToken(kind lexer.TokenKind) bool { + return p.have(1) && p.next().Kind == kind +} + +// isSexpr returns true if next token starts a sexpr +func (p *parser) isSexpr() bool { + return p.isToken(lexer.TokenOpenSexpr) +} + +// isPathSep returns true if next token is a path separator +func (p *parser) isPathSep() bool { + return p.isToken(lexer.TokenSep) +} + +// isID returns true if next token is an ID +func (p *parser) isID() bool { + return p.isToken(lexer.TokenID) +} + +// isBlockParams returns true if next token starts a block params +func (p *parser) isBlockParams() bool { + return p.isToken(lexer.TokenOpenBlockParams) +} + +// isInverse returns true if next token starts an INVERSE sequence +func (p *parser) isInverse() bool { + return p.isToken(lexer.TokenInverse) +} + +// isOpenInverseChain returns true if next token is OPEN_INVERSE_CHAIN +func (p *parser) isOpenInverseChain() bool { + return p.isToken(lexer.TokenOpenInverseChain) +} diff --git a/vendor/github.com/aymerick/raymond/parser/whitespace.go b/vendor/github.com/aymerick/raymond/parser/whitespace.go new file mode 100644 index 0000000..8f8c2c4 --- /dev/null +++ b/vendor/github.com/aymerick/raymond/parser/whitespace.go @@ -0,0 +1,360 @@ +package parser + +import ( + "regexp" + + "github.com/aymerick/raymond/ast" +) + +// whitespaceVisitor walks through the AST to perform whitespace control +// +// The logic was shamelessly borrowed from: +// https://github.com/wycats/handlebars.js/blob/master/lib/handlebars/compiler/whitespace-control.js +type whitespaceVisitor struct { + isRootSeen bool +} + +var ( + rTrimLeft = regexp.MustCompile(`^[ \t]*\r?\n?`) + rTrimLeftMultiple = regexp.MustCompile(`^\s+`) + + rTrimRight = regexp.MustCompile(`[ \t]+$`) + rTrimRightMultiple = regexp.MustCompile(`\s+$`) + + rPrevWhitespace = regexp.MustCompile(`\r?\n\s*?$`) + rPrevWhitespaceStart = regexp.MustCompile(`(^|\r?\n)\s*?$`) + + rNextWhitespace = regexp.MustCompile(`^\s*?\r?\n`) + rNextWhitespaceEnd = regexp.MustCompile(`^\s*?(\r?\n|$)`) + + rPartialIndent = regexp.MustCompile(`([ \t]+$)`) +) + +// newWhitespaceVisitor instanciates a new whitespaceVisitor +func newWhitespaceVisitor() *whitespaceVisitor { + return &whitespaceVisitor{} +} + +// processWhitespaces performs whitespace control on given AST +// +// WARNING: It must be called only once on AST. +func processWhitespaces(node ast.Node) { + node.Accept(newWhitespaceVisitor()) +} + +func omitRightFirst(body []ast.Node, multiple bool) { + omitRight(body, -1, multiple) +} + +func omitRight(body []ast.Node, i int, multiple bool) { + if i+1 >= len(body) { + return + } + + current := body[i+1] + + node, ok := current.(*ast.ContentStatement) + if !ok { + return + } + + if !multiple && node.RightStripped { + return + } + + original := node.Value + + r := rTrimLeft + if multiple { + r = rTrimLeftMultiple + } + + node.Value = r.ReplaceAllString(node.Value, "") + + node.RightStripped = (original != node.Value) +} + +func omitLeftLast(body []ast.Node, multiple bool) { + omitLeft(body, len(body), multiple) +} + +func omitLeft(body []ast.Node, i int, multiple bool) bool { + if i-1 < 0 { + return false + } + + current := body[i-1] + + node, ok := current.(*ast.ContentStatement) + if !ok { + return false + } + + if !multiple && node.LeftStripped { + return false + } + + original := node.Value + + r := rTrimRight + if multiple { + r = rTrimRightMultiple + } + + node.Value = r.ReplaceAllString(node.Value, "") + + node.LeftStripped = (original != node.Value) + + return node.LeftStripped +} + +func isPrevWhitespace(body []ast.Node) bool { + return isPrevWhitespaceProgram(body, len(body), false) +} + +func isPrevWhitespaceProgram(body []ast.Node, i int, isRoot bool) bool { + if i < 1 { + return isRoot + } + + prev := body[i-1] + + if node, ok := prev.(*ast.ContentStatement); ok { + if (node.Value == "") && node.RightStripped { + // already stripped, so it may be an empty string not catched by regexp + return true + } + + r := rPrevWhitespaceStart + if (i > 1) || !isRoot { + r = rPrevWhitespace + } + + return r.MatchString(node.Value) + } + + return false +} + +func isNextWhitespace(body []ast.Node) bool { + return isNextWhitespaceProgram(body, -1, false) +} + +func isNextWhitespaceProgram(body []ast.Node, i int, isRoot bool) bool { + if i+1 >= len(body) { + return isRoot + } + + next := body[i+1] + + if node, ok := next.(*ast.ContentStatement); ok { + if (node.Value == "") && node.LeftStripped { + // already stripped, so it may be an empty string not catched by regexp + return true + } + + r := rNextWhitespaceEnd + if (i+2 > len(body)) || !isRoot { + r = rNextWhitespace + } + + return r.MatchString(node.Value) + } + + return false +} + +// +// Visitor interface +// + +func (v *whitespaceVisitor) VisitProgram(program *ast.Program) interface{} { + isRoot := !v.isRootSeen + v.isRootSeen = true + + body := program.Body + for i, current := range body { + strip, _ := current.Accept(v).(*ast.Strip) + if strip == nil { + continue + } + + _isPrevWhitespace := isPrevWhitespaceProgram(body, i, isRoot) + _isNextWhitespace := isNextWhitespaceProgram(body, i, isRoot) + + openStandalone := strip.OpenStandalone && _isPrevWhitespace + closeStandalone := strip.CloseStandalone && _isNextWhitespace + inlineStandalone := strip.InlineStandalone && _isPrevWhitespace && _isNextWhitespace + + if strip.Close { + omitRight(body, i, true) + } + + if strip.Open && (i > 0) { + omitLeft(body, i, true) + } + + if inlineStandalone { + omitRight(body, i, false) + + if omitLeft(body, i, false) { + // If we are on a standalone node, save the indent info for partials + if partial, ok := current.(*ast.PartialStatement); ok { + // Pull out the whitespace from the final line + if i > 0 { + if prevContent, ok := body[i-1].(*ast.ContentStatement); ok { + partial.Indent = rPartialIndent.FindString(prevContent.Original) + } + } + } + } + } + + if b, ok := current.(*ast.BlockStatement); ok { + if openStandalone { + prog := b.Program + if prog == nil { + prog = b.Inverse + } + + omitRightFirst(prog.Body, false) + + // Strip out the previous content node if it's whitespace only + omitLeft(body, i, false) + } + + if closeStandalone { + prog := b.Inverse + if prog == nil { + prog = b.Program + } + + // Always strip the next node + omitRight(body, i, false) + + omitLeftLast(prog.Body, false) + } + + } + } + + return nil +} + +func (v *whitespaceVisitor) VisitBlock(block *ast.BlockStatement) interface{} { + if block.Program != nil { + block.Program.Accept(v) + } + + if block.Inverse != nil { + block.Inverse.Accept(v) + } + + program := block.Program + inverse := block.Inverse + + if program == nil { + program = inverse + inverse = nil + } + + firstInverse := inverse + lastInverse := inverse + + if (inverse != nil) && inverse.Chained { + b, _ := inverse.Body[0].(*ast.BlockStatement) + firstInverse = b.Program + + for lastInverse.Chained { + b, _ := lastInverse.Body[len(lastInverse.Body)-1].(*ast.BlockStatement) + lastInverse = b.Program + } + } + + closeProg := firstInverse + if closeProg == nil { + closeProg = program + } + + strip := &ast.Strip{ + Open: (block.OpenStrip != nil) && block.OpenStrip.Open, + Close: (block.CloseStrip != nil) && block.CloseStrip.Close, + + OpenStandalone: isNextWhitespace(program.Body), + CloseStandalone: isPrevWhitespace(closeProg.Body), + } + + if (block.OpenStrip != nil) && block.OpenStrip.Close { + omitRightFirst(program.Body, true) + } + + if inverse != nil { + if block.InverseStrip != nil { + inverseStrip := block.InverseStrip + + if inverseStrip.Open { + omitLeftLast(program.Body, true) + } + + if inverseStrip.Close { + omitRightFirst(firstInverse.Body, true) + } + } + + if (block.CloseStrip != nil) && block.CloseStrip.Open { + omitLeftLast(lastInverse.Body, true) + } + + // Find standalone else statements + if isPrevWhitespace(program.Body) && isNextWhitespace(firstInverse.Body) { + omitLeftLast(program.Body, false) + + omitRightFirst(firstInverse.Body, false) + } + } else if (block.CloseStrip != nil) && block.CloseStrip.Open { + omitLeftLast(program.Body, true) + } + + return strip +} + +func (v *whitespaceVisitor) VisitMustache(mustache *ast.MustacheStatement) interface{} { + return mustache.Strip +} + +func _inlineStandalone(strip *ast.Strip) interface{} { + return &ast.Strip{ + Open: strip.Open, + Close: strip.Close, + InlineStandalone: true, + } +} + +func (v *whitespaceVisitor) VisitPartial(node *ast.PartialStatement) interface{} { + strip := node.Strip + if strip == nil { + strip = &ast.Strip{} + } + + return _inlineStandalone(strip) +} + +func (v *whitespaceVisitor) VisitComment(node *ast.CommentStatement) interface{} { + strip := node.Strip + if strip == nil { + strip = &ast.Strip{} + } + + return _inlineStandalone(strip) +} + +// NOOP +func (v *whitespaceVisitor) VisitContent(node *ast.ContentStatement) interface{} { return nil } +func (v *whitespaceVisitor) VisitExpression(node *ast.Expression) interface{} { return nil } +func (v *whitespaceVisitor) VisitSubExpression(node *ast.SubExpression) interface{} { return nil } +func (v *whitespaceVisitor) VisitPath(node *ast.PathExpression) interface{} { return nil } +func (v *whitespaceVisitor) VisitString(node *ast.StringLiteral) interface{} { return nil } +func (v *whitespaceVisitor) VisitBoolean(node *ast.BooleanLiteral) interface{} { return nil } +func (v *whitespaceVisitor) VisitNumber(node *ast.NumberLiteral) interface{} { return nil } +func (v *whitespaceVisitor) VisitHash(node *ast.Hash) interface{} { return nil } +func (v *whitespaceVisitor) VisitHashPair(node *ast.HashPair) interface{} { return nil } diff --git a/vendor/github.com/aymerick/raymond/partial.go b/vendor/github.com/aymerick/raymond/partial.go new file mode 100644 index 0000000..3299d02 --- /dev/null +++ b/vendor/github.com/aymerick/raymond/partial.go @@ -0,0 +1,85 @@ +package raymond + +import ( + "fmt" + "sync" +) + +// partial represents a partial template +type partial struct { + name string + source string + tpl *Template +} + +// partials stores all global partials +var partials map[string]*partial + +// protects global partials +var partialsMutex sync.RWMutex + +func init() { + partials = make(map[string]*partial) +} + +// newPartial instanciates a new partial +func newPartial(name string, source string, tpl *Template) *partial { + return &partial{ + name: name, + source: source, + tpl: tpl, + } +} + +// RegisterPartial registers a global partial. That partial will be available to all templates. +func RegisterPartial(name string, source string) { + partialsMutex.Lock() + defer partialsMutex.Unlock() + + if partials[name] != nil { + panic(fmt.Errorf("Partial already registered: %s", name)) + } + + partials[name] = newPartial(name, source, nil) +} + +// RegisterPartials registers several global partials. Those partials will be available to all templates. +func RegisterPartials(partials map[string]string) { + for name, p := range partials { + RegisterPartial(name, p) + } +} + +// RegisterPartialTemplate registers a global partial with given parsed template. That partial will be available to all templates. +func RegisterPartialTemplate(name string, tpl *Template) { + partialsMutex.Lock() + defer partialsMutex.Unlock() + + if partials[name] != nil { + panic(fmt.Errorf("Partial already registered: %s", name)) + } + + partials[name] = newPartial(name, "", tpl) +} + +// findPartial finds a registered global partial +func findPartial(name string) *partial { + partialsMutex.RLock() + defer partialsMutex.RUnlock() + + return partials[name] +} + +// template returns parsed partial template +func (p *partial) template() (*Template, error) { + if p.tpl == nil { + var err error + + p.tpl, err = Parse(p.source) + if err != nil { + return nil, err + } + } + + return p.tpl, nil +} diff --git a/vendor/github.com/aymerick/raymond/raymond.go b/vendor/github.com/aymerick/raymond/raymond.go new file mode 100644 index 0000000..c6df6b3 --- /dev/null +++ b/vendor/github.com/aymerick/raymond/raymond.go @@ -0,0 +1,28 @@ +// Package raymond provides handlebars evaluation +package raymond + +// Render parses a template and evaluates it with given context +// +// Note that this function call is not optimal as your template is parsed everytime you call it. You should use Parse() function instead. +func Render(source string, ctx interface{}) (string, error) { + // parse template + tpl, err := Parse(source) + if err != nil { + return "", err + } + + // renders template + str, err := tpl.Exec(ctx) + if err != nil { + return "", err + } + + return str, nil +} + +// MustRender parses a template and evaluates it with given context. It panics on error. +// +// Note that this function call is not optimal as your template is parsed everytime you call it. You should use Parse() function instead. +func MustRender(source string, ctx interface{}) string { + return MustParse(source).MustExec(ctx) +} diff --git a/vendor/github.com/aymerick/raymond/raymond.png b/vendor/github.com/aymerick/raymond/raymond.png new file mode 100644 index 0000000000000000000000000000000000000000..6a7c942e57561ce3462447a74560c48bdbb3fe10 GIT binary patch literal 13661 zcmZ|019T_Bvp*Uen`~^`++brH-{2eD#>U#%`Nqb^cCxW;+qSK@zkBby|M%WGZ_erI z?&?ofb=CBl>Y1qtS5lBfM!-V=0|P^rmJ(C>S1bLez`^`G$DrL-{;QzOh2@38z-nU= z-wmPv^+}ASROG?HJgLCI{DZ*2UjLE&kHNrPS-`+f4Zy&7Q^CNn9Wq;$`Tq^TJ4gYY z!N3r||EGY1rDx)Rfq^er0yJGT<>h#d?QNM1P3(TMTK*}>EL2%Z%6VUxrRpet}Z{x$o`|~e~Gm!Z|Bh0K! zEX@Ba`yVU+f2h2o_O=dArq0g)^n{-4*JERCh@Tuhz*Df=I8w*S%g|Bv_|S^UiZG5r7Gi2wHTe^LLrSpb2b`F}5& z00P9a|GyQ&b}KC=3~&c;%z{rPSa2;-bXBXauTGc8lg`Ht2ogGP14ePb4=j^X#MBC! zlQ+G@KfeqpoVWLfJp268dymJyQpoIwfwhT3ZVE($g6*e5vJmzUdbGu|d^}0pY%4qa zIQq3DH>C+7Jd8QlxZ!n{?L6f>#mMk-#nee0KY<=!KJb0)_DKKeP5pl0-JgC^NJ^$$ 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representation of any basic type value. +func Str(value interface{}) string { + return strValue(reflect.ValueOf(value)) +} + +// strValue returns string representation of a reflect.Value +func strValue(value reflect.Value) string { + result := "" + + ival, ok := printableValue(value) + if !ok { + panic(fmt.Errorf("Can't print value: %q", value)) + } + + val := reflect.ValueOf(ival) + + switch val.Kind() { + case reflect.Array, reflect.Slice: + for i := 0; i < val.Len(); i++ { + result += strValue(val.Index(i)) + } + case reflect.Bool: + result = "false" + if val.Bool() { + result = "true" + } + case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr: + result = fmt.Sprintf("%d", ival) + case reflect.Float32, reflect.Float64: + result = strconv.FormatFloat(val.Float(), 'f', -1, 64) + case reflect.Invalid: + result = "" + default: + result = fmt.Sprintf("%s", ival) + } + + return result +} + +// printableValue returns the, possibly indirected, interface value inside v that +// is best for a call to formatted printer. +// +// NOTE: borrowed from https://github.com/golang/go/tree/master/src/text/template/exec.go +func printableValue(v reflect.Value) (interface{}, bool) { + if v.Kind() == reflect.Ptr { + v, _ = indirect(v) // fmt.Fprint handles nil. + } + if !v.IsValid() { + return "", true + } + + if !v.Type().Implements(errorType) && !v.Type().Implements(fmtStringerType) { + if v.CanAddr() && (reflect.PtrTo(v.Type()).Implements(errorType) || reflect.PtrTo(v.Type()).Implements(fmtStringerType)) { + v = v.Addr() + } else { + switch v.Kind() { + case reflect.Chan, reflect.Func: + return nil, false + } + } + } + return v.Interface(), true +} diff --git a/vendor/github.com/aymerick/raymond/template.go b/vendor/github.com/aymerick/raymond/template.go new file mode 100644 index 0000000..f16ed2f --- /dev/null +++ b/vendor/github.com/aymerick/raymond/template.go @@ -0,0 +1,248 @@ +package raymond + +import ( + "fmt" + "io/ioutil" + "reflect" + "runtime" + "sync" + + "github.com/aymerick/raymond/ast" + "github.com/aymerick/raymond/parser" +) + +// Template represents a handlebars template. +type Template struct { + source string + program *ast.Program + helpers map[string]reflect.Value + partials map[string]*partial + mutex sync.RWMutex // protects helpers and partials +} + +// newTemplate instanciate a new template without parsing it +func newTemplate(source string) *Template { + return &Template{ + source: source, + helpers: make(map[string]reflect.Value), + partials: make(map[string]*partial), + } +} + +// Parse instanciates a template by parsing given source. +func Parse(source string) (*Template, error) { + tpl := newTemplate(source) + + // parse template + if err := tpl.parse(); err != nil { + return nil, err + } + + return tpl, nil +} + +// MustParse instanciates a template by parsing given source. It panics on error. +func MustParse(source string) *Template { + result, err := Parse(source) + if err != nil { + panic(err) + } + return result +} + +// ParseFile reads given file and returns parsed template. +func ParseFile(filePath string) (*Template, error) { + b, err := ioutil.ReadFile(filePath) + if err != nil { + return nil, err + } + + return Parse(string(b)) +} + +// parse parses the template +// +// It can be called several times, the parsing will be done only once. +func (tpl *Template) parse() error { + if tpl.program == nil { + var err error + + tpl.program, err = parser.Parse(tpl.source) + if err != nil { + return err + } + } + + return nil +} + +// Clone returns a copy of that template. +func (tpl *Template) Clone() *Template { + result := newTemplate(tpl.source) + + result.program = tpl.program + + tpl.mutex.RLock() + defer tpl.mutex.RUnlock() + + for name, helper := range tpl.helpers { + result.RegisterHelper(name, helper.Interface()) + } + + for name, partial := range tpl.partials { + result.addPartial(name, partial.source, partial.tpl) + } + + return result +} + +func (tpl *Template) findHelper(name string) reflect.Value { + tpl.mutex.RLock() + defer tpl.mutex.RUnlock() + + return tpl.helpers[name] +} + +// RegisterHelper registers a helper for that template. +func (tpl *Template) RegisterHelper(name string, helper interface{}) { + tpl.mutex.Lock() + defer tpl.mutex.Unlock() + + if tpl.helpers[name] != zero { + panic(fmt.Sprintf("Helper %s already registered", name)) + } + + val := reflect.ValueOf(helper) + ensureValidHelper(name, val) + + tpl.helpers[name] = val +} + +// RegisterHelpers registers several helpers for that template. +func (tpl *Template) RegisterHelpers(helpers map[string]interface{}) { + for name, helper := range helpers { + tpl.RegisterHelper(name, helper) + } +} + +func (tpl *Template) addPartial(name string, source string, template *Template) { + tpl.mutex.Lock() + defer tpl.mutex.Unlock() + + if tpl.partials[name] != nil { + panic(fmt.Sprintf("Partial %s already registered", name)) + } + + tpl.partials[name] = newPartial(name, source, template) +} + +func (tpl *Template) findPartial(name string) *partial { + tpl.mutex.RLock() + defer tpl.mutex.RUnlock() + + return tpl.partials[name] +} + +// RegisterPartial registers a partial for that template. +func (tpl *Template) RegisterPartial(name string, source string) { + tpl.addPartial(name, source, nil) +} + +// RegisterPartials registers several partials for that template. +func (tpl *Template) RegisterPartials(partials map[string]string) { + for name, partial := range partials { + tpl.RegisterPartial(name, partial) + } +} + +// RegisterPartialFile reads given file and registers its content as a partial with given name. +func (tpl *Template) RegisterPartialFile(filePath string, name string) error { + b, err := ioutil.ReadFile(filePath) + if err != nil { + return err + } + + tpl.RegisterPartial(name, string(b)) + + return nil +} + +// RegisterPartialFiles reads several files and registers them as partials, the filename base is used as the partial name. +func (tpl *Template) RegisterPartialFiles(filePaths ...string) error { + if len(filePaths) == 0 { + return nil + } + + for _, filePath := range filePaths { + name := fileBase(filePath) + + if err := tpl.RegisterPartialFile(filePath, name); err != nil { + return err + } + } + + return nil +} + +// RegisterPartialTemplate registers an already parsed partial for that template. +func (tpl *Template) RegisterPartialTemplate(name string, template *Template) { + tpl.addPartial(name, "", template) +} + +// Exec evaluates template with given context. +func (tpl *Template) Exec(ctx interface{}) (result string, err error) { + return tpl.ExecWith(ctx, nil) +} + +// MustExec evaluates template with given context. It panics on error. +func (tpl *Template) MustExec(ctx interface{}) string { + result, err := tpl.Exec(ctx) + if err != nil { + panic(err) + } + return result +} + +// ExecWith evaluates template with given context and private data frame. +func (tpl *Template) ExecWith(ctx interface{}, privData *DataFrame) (result string, err error) { + defer errRecover(&err) + + // parses template if necessary + err = tpl.parse() + if err != nil { + return + } + + // setup visitor + v := newEvalVisitor(tpl, ctx, privData) + + // visit AST + result, _ = tpl.program.Accept(v).(string) + + // named return values + return +} + +// errRecover recovers evaluation panic +func errRecover(errp *error) { + e := recover() + if e != nil { + switch err := e.(type) { + case runtime.Error: + panic(e) + case error: + *errp = err + default: + panic(e) + } + } +} + +// PrintAST returns string representation of parsed template. +func (tpl *Template) PrintAST() string { + if err := tpl.parse(); err != nil { + return fmt.Sprintf("PARSER ERROR: %s", err) + } + + return ast.Print(tpl.program) +} diff --git a/vendor/github.com/aymerick/raymond/utils.go b/vendor/github.com/aymerick/raymond/utils.go new file mode 100644 index 0000000..3deaaf3 --- /dev/null +++ b/vendor/github.com/aymerick/raymond/utils.go @@ -0,0 +1,85 @@ +package raymond + +import ( + "path" + "reflect" +) + +// indirect returns the item at the end of indirection, and a bool to indicate if it's nil. +// We indirect through pointers and empty interfaces (only) because +// non-empty interfaces have methods we might need. +// +// NOTE: borrowed from https://github.com/golang/go/tree/master/src/text/template/exec.go +func indirect(v reflect.Value) (rv reflect.Value, isNil bool) { + for ; v.Kind() == reflect.Ptr || v.Kind() == reflect.Interface; v = v.Elem() { + if v.IsNil() { + return v, true + } + if v.Kind() == reflect.Interface && v.NumMethod() > 0 { + break + } + } + return v, false +} + +// IsTrue returns true if obj is a truthy value. +func IsTrue(obj interface{}) bool { + thruth, ok := isTrueValue(reflect.ValueOf(obj)) + if !ok { + return false + } + return thruth +} + +// isTrueValue reports whether the value is 'true', in the sense of not the zero of its type, +// and whether the value has a meaningful truth value +// +// NOTE: borrowed from https://github.com/golang/go/tree/master/src/text/template/exec.go +func isTrueValue(val reflect.Value) (truth, ok bool) { + if !val.IsValid() { + // Something like var x interface{}, never set. It's a form of nil. + return false, true + } + switch val.Kind() { + case reflect.Array, reflect.Map, reflect.Slice, reflect.String: + truth = val.Len() > 0 + case reflect.Bool: + truth = val.Bool() + case reflect.Complex64, reflect.Complex128: + truth = val.Complex() != 0 + case reflect.Chan, reflect.Func, reflect.Ptr, reflect.Interface: + truth = !val.IsNil() + case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64: + truth = val.Int() != 0 + case reflect.Float32, reflect.Float64: + truth = val.Float() != 0 + case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr: + truth = val.Uint() != 0 + case reflect.Struct: + truth = true // Struct values are always true. + default: + return + } + return truth, true +} + +// canBeNil reports whether an untyped nil can be assigned to the type. See reflect.Zero. +// +// NOTE: borrowed from https://github.com/golang/go/tree/master/src/text/template/exec.go +func canBeNil(typ reflect.Type) bool { + switch typ.Kind() { + case reflect.Chan, reflect.Func, reflect.Interface, reflect.Map, reflect.Ptr, reflect.Slice: + return true + } + return false +} + +// fileBase returns base file name +// +// example: /foo/bar/baz.png => baz +func fileBase(filePath string) string { + fileName := path.Base(filePath) + fileExt := path.Ext(filePath) + + return fileName[:len(fileName)-len(fileExt)] +} diff --git a/vendor/github.com/urfave/cli/CHANGELOG.md b/vendor/github.com/urfave/cli/CHANGELOG.md new file mode 100644 index 0000000..07f7546 --- /dev/null +++ b/vendor/github.com/urfave/cli/CHANGELOG.md @@ -0,0 +1,392 @@ +# Change Log + +**ATTN**: This project uses [semantic versioning](http://semver.org/). + +## [Unreleased] + +## [1.19.1] - 2016-11-21 + +### Fixed + +- Fixes regression introduced in 1.19.0 where using an `ActionFunc` as + the `Action` for a command would cause it to error rather than calling the + function. Should not have a affected declarative cases using `func(c + *cli.Context) err)`. +- Shell completion now handles the case where the user specifies + `--generate-bash-completion` immediately after a flag that takes an argument. + Previously it call the application with `--generate-bash-completion` as the + flag value. + +## [1.19.0] - 2016-11-19 +### Added +- `FlagsByName` was added to make it easy to sort flags (e.g. `sort.Sort(cli.FlagsByName(app.Flags))`) +- A `Description` field was added to `App` for a more detailed description of + the application (similar to the existing `Description` field on `Command`) +- Flag type code generation via `go generate` +- Write to stderr and exit 1 if action returns non-nil error +- Added support for TOML to the `altsrc` loader +- `SkipArgReorder` was added to allow users to skip the argument reordering. + This is useful if you want to consider all "flags" after an argument as + arguments rather than flags (the default behavior of the stdlib `flag` + library). This is backported functionality from the [removal of the flag + reordering](https://github.com/urfave/cli/pull/398) in the unreleased version + 2 +- For formatted errors (those implementing `ErrorFormatter`), the errors will + be formatted during output. Compatible with `pkg/errors`. + +### Changed +- Raise minimum tested/supported Go version to 1.2+ + +### Fixed +- Consider empty environment variables as set (previously environment variables + with the equivalent of `""` would be skipped rather than their value used). +- Return an error if the value in a given environment variable cannot be parsed + as the flag type. Previously these errors were silently swallowed. +- Print full error when an invalid flag is specified (which includes the invalid flag) +- `App.Writer` defaults to `stdout` when `nil` +- If no action is specified on a command or app, the help is now printed instead of `panic`ing +- `App.Metadata` is initialized automatically now (previously was `nil` unless initialized) +- Correctly show help message if `-h` is provided to a subcommand +- `context.(Global)IsSet` now respects environment variables. Previously it + would return `false` if a flag was specified in the environment rather than + as an argument +- Removed deprecation warnings to STDERR to avoid them leaking to the end-user +- `altsrc`s import paths were updated to use `gopkg.in/urfave/cli.v1`. This + fixes issues that occurred when `gopkg.in/urfave/cli.v1` was imported as well + as `altsrc` where Go would complain that the types didn't match + +## [1.18.1] - 2016-08-28 +### Fixed +- Removed deprecation warnings to STDERR to avoid them leaking to the end-user (backported) + +## [1.18.0] - 2016-06-27 +### Added +- `./runtests` test runner with coverage tracking by default +- testing on OS X +- testing on Windows +- `UintFlag`, `Uint64Flag`, and `Int64Flag` types and supporting code + +### Changed +- Use spaces for alignment in help/usage output instead of tabs, making the + output alignment consistent regardless of tab width + +### Fixed +- Printing of command aliases in help text +- Printing of visible flags for both struct and struct pointer flags +- Display the `help` subcommand when using `CommandCategories` +- No longer swallows `panic`s that occur within the `Action`s themselves when + detecting the signature of the `Action` field + +## [1.17.1] - 2016-08-28 +### Fixed +- Removed deprecation warnings to STDERR to avoid them leaking to the end-user + +## [1.17.0] - 2016-05-09 +### Added +- Pluggable flag-level help text rendering via `cli.DefaultFlagStringFunc` +- `context.GlobalBoolT` was added as an analogue to `context.GlobalBool` +- Support for hiding commands by setting `Hidden: true` -- this will hide the + commands in help output + +### Changed +- `Float64Flag`, `IntFlag`, and `DurationFlag` default values are no longer + quoted in help text output. +- All flag types now include `(default: {value})` strings following usage when a + default value can be (reasonably) detected. +- `IntSliceFlag` and `StringSliceFlag` usage strings are now more consistent + with non-slice flag types +- Apps now exit with a code of 3 if an unknown subcommand is specified + (previously they printed "No help topic for...", but still exited 0. This + makes it easier to script around apps built using `cli` since they can trust + that a 0 exit code indicated a successful execution. +- cleanups based on [Go Report Card + feedback](https://goreportcard.com/report/github.com/urfave/cli) + +## [1.16.1] - 2016-08-28 +### Fixed +- Removed deprecation warnings to STDERR to avoid them leaking to the end-user + +## [1.16.0] - 2016-05-02 +### Added +- `Hidden` field on all flag struct types to omit from generated help text + +### Changed +- `BashCompletionFlag` (`--enable-bash-completion`) is now omitted from +generated help text via the `Hidden` field + +### Fixed +- handling of error values in `HandleAction` and `HandleExitCoder` + +## [1.15.0] - 2016-04-30 +### Added +- This file! +- Support for placeholders in flag usage strings +- `App.Metadata` map for arbitrary data/state management +- `Set` and `GlobalSet` methods on `*cli.Context` for altering values after +parsing. +- Support for nested lookup of dot-delimited keys in structures loaded from +YAML. + +### Changed +- The `App.Action` and `Command.Action` now prefer a return signature of +`func(*cli.Context) error`, as defined by `cli.ActionFunc`. If a non-nil +`error` is returned, there may be two outcomes: + - If the error fulfills `cli.ExitCoder`, then `os.Exit` will be called + automatically + - Else the error is bubbled up and returned from `App.Run` +- Specifying an `Action` with the legacy return signature of +`func(*cli.Context)` will produce a deprecation message to stderr +- Specifying an `Action` that is not a `func` type will produce a non-zero exit +from `App.Run` +- Specifying an `Action` func that has an invalid (input) signature will +produce a non-zero exit from `App.Run` + +### Deprecated +- +`cli.App.RunAndExitOnError`, which should now be done by returning an error +that fulfills `cli.ExitCoder` to `cli.App.Run`. +- the legacy signature for +`cli.App.Action` of `func(*cli.Context)`, which should now have a return +signature of `func(*cli.Context) error`, as defined by `cli.ActionFunc`. + +### Fixed +- Added missing `*cli.Context.GlobalFloat64` method + +## [1.14.0] - 2016-04-03 (backfilled 2016-04-25) +### Added +- Codebeat badge +- Support for categorization via `CategorizedHelp` and `Categories` on app. + +### Changed +- Use `filepath.Base` instead of `path.Base` in `Name` and `HelpName`. + +### Fixed +- Ensure version is not shown in help text when `HideVersion` set. + +## [1.13.0] - 2016-03-06 (backfilled 2016-04-25) +### Added +- YAML file input support. +- `NArg` method on context. + +## [1.12.0] - 2016-02-17 (backfilled 2016-04-25) +### Added +- Custom usage error handling. +- Custom text support in `USAGE` section of help output. +- Improved help messages for empty strings. +- AppVeyor CI configuration. + +### Changed +- Removed `panic` from default help printer func. +- De-duping and optimizations. + +### Fixed +- Correctly handle `Before`/`After` at command level when no subcommands. +- Case of literal `-` argument causing flag reordering. +- Environment variable hints on Windows. +- Docs updates. + +## [1.11.1] - 2015-12-21 (backfilled 2016-04-25) +### Changed +- Use `path.Base` in `Name` and `HelpName` +- Export `GetName` on flag types. + +### Fixed +- Flag parsing when skipping is enabled. +- Test output cleanup. +- Move completion check to account for empty input case. + +## [1.11.0] - 2015-11-15 (backfilled 2016-04-25) +### Added +- Destination scan support for flags. +- Testing against `tip` in Travis CI config. + +### Changed +- Go version in Travis CI config. + +### Fixed +- Removed redundant tests. +- Use correct example naming in tests. + +## [1.10.2] - 2015-10-29 (backfilled 2016-04-25) +### Fixed +- Remove unused var in bash completion. + +## [1.10.1] - 2015-10-21 (backfilled 2016-04-25) +### Added +- Coverage and reference logos in README. + +### Fixed +- Use specified values in help and version parsing. +- Only display app version and help message once. + +## [1.10.0] - 2015-10-06 (backfilled 2016-04-25) +### Added +- More tests for existing functionality. +- `ArgsUsage` at app and command level for help text flexibility. + +### Fixed +- Honor `HideHelp` and `HideVersion` in `App.Run`. +- Remove juvenile word from README. + +## [1.9.0] - 2015-09-08 (backfilled 2016-04-25) +### Added +- `FullName` on command with accompanying help output update. +- Set default `$PROG` in bash completion. + +### Changed +- Docs formatting. + +### Fixed +- Removed self-referential imports in tests. + +## [1.8.0] - 2015-06-30 (backfilled 2016-04-25) +### Added +- Support for `Copyright` at app level. +- `Parent` func at context level to walk up context lineage. + +### Fixed +- Global flag processing at top level. + +## [1.7.1] - 2015-06-11 (backfilled 2016-04-25) +### Added +- Aggregate errors from `Before`/`After` funcs. +- Doc comments on flag structs. +- Include non-global flags when checking version and help. +- Travis CI config updates. + +### Fixed +- Ensure slice type flags have non-nil values. +- Collect global flags from the full command hierarchy. +- Docs prose. + +## [1.7.0] - 2015-05-03 (backfilled 2016-04-25) +### Changed +- `HelpPrinter` signature includes output writer. + +### Fixed +- Specify go 1.1+ in docs. +- Set `Writer` when running command as app. + +## [1.6.0] - 2015-03-23 (backfilled 2016-04-25) +### Added +- Multiple author support. +- `NumFlags` at context level. +- `Aliases` at command level. + +### Deprecated +- `ShortName` at command level. + +### Fixed +- Subcommand help output. +- Backward compatible support for deprecated `Author` and `Email` fields. +- Docs regarding `Names`/`Aliases`. + +## [1.5.0] - 2015-02-20 (backfilled 2016-04-25) +### Added +- `After` hook func support at app and command level. + +### Fixed +- Use parsed context when running command as subcommand. +- Docs prose. + +## [1.4.1] - 2015-01-09 (backfilled 2016-04-25) +### Added +- Support for hiding `-h / --help` flags, but not `help` subcommand. +- Stop flag parsing after `--`. + +### Fixed +- Help text for generic flags to specify single value. +- Use double quotes in output for defaults. +- Use `ParseInt` instead of `ParseUint` for int environment var values. +- Use `0` as base when parsing int environment var values. + +## [1.4.0] - 2014-12-12 (backfilled 2016-04-25) +### Added +- Support for environment variable lookup "cascade". +- Support for `Stdout` on app for output redirection. + +### Fixed +- Print command help instead of app help in `ShowCommandHelp`. + +## [1.3.1] - 2014-11-13 (backfilled 2016-04-25) +### Added +- Docs and example code updates. + +### Changed +- Default `-v / --version` flag made optional. + +## [1.3.0] - 2014-08-10 (backfilled 2016-04-25) +### Added +- `FlagNames` at context level. +- Exposed `VersionPrinter` var for more control over version output. +- Zsh completion hook. +- `AUTHOR` section in default app help template. +- Contribution guidelines. +- `DurationFlag` type. + +## [1.2.0] - 2014-08-02 +### Added +- Support for environment variable defaults on flags plus tests. + +## [1.1.0] - 2014-07-15 +### Added +- Bash completion. +- Optional hiding of built-in help command. +- Optional skipping of flag parsing at command level. +- `Author`, `Email`, and `Compiled` metadata on app. +- `Before` hook func support at app and command level. +- `CommandNotFound` func support at app level. +- Command reference available on context. +- `GenericFlag` type. +- `Float64Flag` type. +- `BoolTFlag` type. +- `IsSet` flag helper on context. +- More flag lookup funcs at context level. +- More tests & docs. + +### Changed +- Help template updates to account for presence/absence of flags. +- Separated subcommand help template. +- Exposed `HelpPrinter` var for more control over help output. + +## [1.0.0] - 2013-11-01 +### Added +- `help` flag in default app flag set and each command flag set. +- Custom handling of argument parsing errors. +- Command lookup by name at app level. +- `StringSliceFlag` type and supporting `StringSlice` type. +- `IntSliceFlag` type and supporting `IntSlice` type. +- Slice type flag lookups by name at context level. +- Export of app and command help functions. +- More tests & docs. + +## 0.1.0 - 2013-07-22 +### Added +- Initial implementation. + +[Unreleased]: https://github.com/urfave/cli/compare/v1.18.0...HEAD +[1.18.0]: https://github.com/urfave/cli/compare/v1.17.0...v1.18.0 +[1.17.0]: https://github.com/urfave/cli/compare/v1.16.0...v1.17.0 +[1.16.0]: https://github.com/urfave/cli/compare/v1.15.0...v1.16.0 +[1.15.0]: https://github.com/urfave/cli/compare/v1.14.0...v1.15.0 +[1.14.0]: https://github.com/urfave/cli/compare/v1.13.0...v1.14.0 +[1.13.0]: https://github.com/urfave/cli/compare/v1.12.0...v1.13.0 +[1.12.0]: https://github.com/urfave/cli/compare/v1.11.1...v1.12.0 +[1.11.1]: https://github.com/urfave/cli/compare/v1.11.0...v1.11.1 +[1.11.0]: https://github.com/urfave/cli/compare/v1.10.2...v1.11.0 +[1.10.2]: https://github.com/urfave/cli/compare/v1.10.1...v1.10.2 +[1.10.1]: https://github.com/urfave/cli/compare/v1.10.0...v1.10.1 +[1.10.0]: https://github.com/urfave/cli/compare/v1.9.0...v1.10.0 +[1.9.0]: https://github.com/urfave/cli/compare/v1.8.0...v1.9.0 +[1.8.0]: https://github.com/urfave/cli/compare/v1.7.1...v1.8.0 +[1.7.1]: https://github.com/urfave/cli/compare/v1.7.0...v1.7.1 +[1.7.0]: https://github.com/urfave/cli/compare/v1.6.0...v1.7.0 +[1.6.0]: https://github.com/urfave/cli/compare/v1.5.0...v1.6.0 +[1.5.0]: https://github.com/urfave/cli/compare/v1.4.1...v1.5.0 +[1.4.1]: https://github.com/urfave/cli/compare/v1.4.0...v1.4.1 +[1.4.0]: https://github.com/urfave/cli/compare/v1.3.1...v1.4.0 +[1.3.1]: https://github.com/urfave/cli/compare/v1.3.0...v1.3.1 +[1.3.0]: https://github.com/urfave/cli/compare/v1.2.0...v1.3.0 +[1.2.0]: https://github.com/urfave/cli/compare/v1.1.0...v1.2.0 +[1.1.0]: https://github.com/urfave/cli/compare/v1.0.0...v1.1.0 +[1.0.0]: https://github.com/urfave/cli/compare/v0.1.0...v1.0.0 diff --git a/vendor/github.com/urfave/cli/LICENSE b/vendor/github.com/urfave/cli/LICENSE new file mode 100644 index 0000000..42a597e --- /dev/null +++ b/vendor/github.com/urfave/cli/LICENSE @@ -0,0 +1,21 @@ +MIT License + +Copyright (c) 2016 Jeremy Saenz & Contributors + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/vendor/github.com/urfave/cli/README.md b/vendor/github.com/urfave/cli/README.md new file mode 100644 index 0000000..2bbbd8e --- /dev/null +++ b/vendor/github.com/urfave/cli/README.md @@ -0,0 +1,1381 @@ +cli +=== + +[![Build Status](https://travis-ci.org/urfave/cli.svg?branch=master)](https://travis-ci.org/urfave/cli) +[![Windows Build Status](https://ci.appveyor.com/api/projects/status/rtgk5xufi932pb2v?svg=true)](https://ci.appveyor.com/project/urfave/cli) +[![GoDoc](https://godoc.org/github.com/urfave/cli?status.svg)](https://godoc.org/github.com/urfave/cli) +[![codebeat](https://codebeat.co/badges/0a8f30aa-f975-404b-b878-5fab3ae1cc5f)](https://codebeat.co/projects/github-com-urfave-cli) +[![Go Report Card](https://goreportcard.com/badge/urfave/cli)](https://goreportcard.com/report/urfave/cli) +[![top level coverage](https://gocover.io/_badge/github.com/urfave/cli?0 "top level coverage")](http://gocover.io/github.com/urfave/cli) / +[![altsrc coverage](https://gocover.io/_badge/github.com/urfave/cli/altsrc?0 "altsrc coverage")](http://gocover.io/github.com/urfave/cli/altsrc) + +**Notice:** This is the library formerly known as +`github.com/codegangsta/cli` -- Github will automatically redirect requests +to this repository, but we recommend updating your references for clarity. + +cli is a simple, fast, and fun package for building command line apps in Go. The +goal is to enable developers to write fast and distributable command line +applications in an expressive way. + + + +- [Overview](#overview) +- [Installation](#installation) + * [Supported platforms](#supported-platforms) + * [Using the `v2` branch](#using-the-v2-branch) + * [Pinning to the `v1` releases](#pinning-to-the-v1-releases) +- [Getting Started](#getting-started) +- [Examples](#examples) + * [Arguments](#arguments) + * [Flags](#flags) + + [Placeholder Values](#placeholder-values) + + [Alternate Names](#alternate-names) + + [Ordering](#ordering) + + [Values from the Environment](#values-from-the-environment) + + [Values from alternate input sources (YAML, TOML, and others)](#values-from-alternate-input-sources-yaml-toml-and-others) + * [Subcommands](#subcommands) + * [Subcommands categories](#subcommands-categories) + * [Exit code](#exit-code) + * [Bash Completion](#bash-completion) + + [Enabling](#enabling) + + [Distribution](#distribution) + + [Customization](#customization) + * [Generated Help Text](#generated-help-text) + + [Customization](#customization-1) + * [Version Flag](#version-flag) + + [Customization](#customization-2) + + [Full API Example](#full-api-example) +- [Contribution Guidelines](#contribution-guidelines) + + + +## Overview + +Command line apps are usually so tiny that there is absolutely no reason why +your code should *not* be self-documenting. Things like generating help text and +parsing command flags/options should not hinder productivity when writing a +command line app. + +**This is where cli comes into play.** cli makes command line programming fun, +organized, and expressive! + +## Installation + +Make sure you have a working Go environment. Go version 1.2+ is supported. [See +the install instructions for Go](http://golang.org/doc/install.html). + +To install cli, simply run: +``` +$ go get github.com/urfave/cli +``` + +Make sure your `PATH` includes the `$GOPATH/bin` directory so your commands can +be easily used: +``` +export PATH=$PATH:$GOPATH/bin +``` + +### Supported platforms + +cli is tested against multiple versions of Go on Linux, and against the latest +released version of Go on OS X and Windows. For full details, see +[`./.travis.yml`](./.travis.yml) and [`./appveyor.yml`](./appveyor.yml). + +### Using the `v2` branch + +**Warning**: The `v2` branch is currently unreleased and considered unstable. + +There is currently a long-lived branch named `v2` that is intended to land as +the new `master` branch once development there has settled down. The current +`master` branch (mirrored as `v1`) is being manually merged into `v2` on +an irregular human-based schedule, but generally if one wants to "upgrade" to +`v2` *now* and accept the volatility (read: "awesomeness") that comes along with +that, please use whatever version pinning of your preference, such as via +`gopkg.in`: + +``` +$ go get gopkg.in/urfave/cli.v2 +``` + +``` go +... +import ( + "gopkg.in/urfave/cli.v2" // imports as package "cli" +) +... +``` + +### Pinning to the `v1` releases + +Similarly to the section above describing use of the `v2` branch, if one wants +to avoid any unexpected compatibility pains once `v2` becomes `master`, then +pinning to `v1` is an acceptable option, e.g.: + +``` +$ go get gopkg.in/urfave/cli.v1 +``` + +``` go +... +import ( + "gopkg.in/urfave/cli.v1" // imports as package "cli" +) +... +``` + +This will pull the latest tagged `v1` release (e.g. `v1.18.1` at the time of writing). + +## Getting Started + +One of the philosophies behind cli is that an API should be playful and full of +discovery. So a cli app can be as little as one line of code in `main()`. + + +``` go +package main + +import ( + "os" + + "github.com/urfave/cli" +) + +func main() { + cli.NewApp().Run(os.Args) +} +``` + +This app will run and show help text, but is not very useful. Let's give an +action to execute and some help documentation: + + +``` go +package main + +import ( + "fmt" + "os" + + "github.com/urfave/cli" +) + +func main() { + app := cli.NewApp() + app.Name = "boom" + app.Usage = "make an explosive entrance" + app.Action = func(c *cli.Context) error { + fmt.Println("boom! I say!") + return nil + } + + app.Run(os.Args) +} +``` + +Running this already gives you a ton of functionality, plus support for things +like subcommands and flags, which are covered below. + +## Examples + +Being a programmer can be a lonely job. Thankfully by the power of automation +that is not the case! Let's create a greeter app to fend off our demons of +loneliness! + +Start by creating a directory named `greet`, and within it, add a file, +`greet.go` with the following code in it: + + +``` go +package main + +import ( + "fmt" + "os" + + "github.com/urfave/cli" +) + +func main() { + app := cli.NewApp() + app.Name = "greet" + app.Usage = "fight the loneliness!" + app.Action = func(c *cli.Context) error { + fmt.Println("Hello friend!") + return nil + } + + app.Run(os.Args) +} +``` + +Install our command to the `$GOPATH/bin` directory: + +``` +$ go install +``` + +Finally run our new command: + +``` +$ greet +Hello friend! +``` + +cli also generates neat help text: + +``` +$ greet help +NAME: + greet - fight the loneliness! + +USAGE: + greet [global options] command [command options] [arguments...] + +VERSION: + 0.0.0 + +COMMANDS: + help, h Shows a list of commands or help for one command + +GLOBAL OPTIONS + --version Shows version information +``` + +### Arguments + +You can lookup arguments by calling the `Args` function on `cli.Context`, e.g.: + + +``` go +package main + +import ( + "fmt" + "os" + + "github.com/urfave/cli" +) + +func main() { + app := cli.NewApp() + + app.Action = func(c *cli.Context) error { + fmt.Printf("Hello %q", c.Args().Get(0)) + return nil + } + + app.Run(os.Args) +} +``` + +### Flags + +Setting and querying flags is simple. + + +``` go +package main + +import ( + "fmt" + "os" + + "github.com/urfave/cli" +) + +func main() { + app := cli.NewApp() + + app.Flags = []cli.Flag { + cli.StringFlag{ + Name: "lang", + Value: "english", + Usage: "language for the greeting", + }, + } + + app.Action = func(c *cli.Context) error { + name := "Nefertiti" + if c.NArg() > 0 { + name = c.Args().Get(0) + } + if c.String("lang") == "spanish" { + fmt.Println("Hola", name) + } else { + fmt.Println("Hello", name) + } + return nil + } + + app.Run(os.Args) +} +``` + +You can also set a destination variable for a flag, to which the content will be +scanned. + + +``` go +package main + +import ( + "os" + "fmt" + + "github.com/urfave/cli" +) + +func main() { + var language string + + app := cli.NewApp() + + app.Flags = []cli.Flag { + cli.StringFlag{ + Name: "lang", + Value: "english", + Usage: "language for the greeting", + Destination: &language, + }, + } + + app.Action = func(c *cli.Context) error { + name := "someone" + if c.NArg() > 0 { + name = c.Args()[0] + } + if language == "spanish" { + fmt.Println("Hola", name) + } else { + fmt.Println("Hello", name) + } + return nil + } + + app.Run(os.Args) +} +``` + +See full list of flags at http://godoc.org/github.com/urfave/cli + +#### Placeholder Values + +Sometimes it's useful to specify a flag's value within the usage string itself. +Such placeholders are indicated with back quotes. + +For example this: + + +```go +package main + +import ( + "os" + + "github.com/urfave/cli" +) + +func main() { + app := cli.NewApp() + + app.Flags = []cli.Flag{ + cli.StringFlag{ + Name: "config, c", + Usage: "Load configuration from `FILE`", + }, + } + + app.Run(os.Args) +} +``` + +Will result in help output like: + +``` +--config FILE, -c FILE Load configuration from FILE +``` + +Note that only the first placeholder is used. Subsequent back-quoted words will +be left as-is. + +#### Alternate Names + +You can set alternate (or short) names for flags by providing a comma-delimited +list for the `Name`. e.g. + + +``` go +package main + +import ( + "os" + + "github.com/urfave/cli" +) + +func main() { + app := cli.NewApp() + + app.Flags = []cli.Flag { + cli.StringFlag{ + Name: "lang, l", + Value: "english", + Usage: "language for the greeting", + }, + } + + app.Run(os.Args) +} +``` + +That flag can then be set with `--lang spanish` or `-l spanish`. Note that +giving two different forms of the same flag in the same command invocation is an +error. + +#### Ordering + +Flags for the application and commands are shown in the order they are defined. +However, it's possible to sort them from outside this library by using `FlagsByName` +or `CommandsByName` with `sort`. + +For example this: + + +``` go +package main + +import ( + "os" + "sort" + + "github.com/urfave/cli" +) + +func main() { + app := cli.NewApp() + + app.Flags = []cli.Flag { + cli.StringFlag{ + Name: "lang, l", + Value: "english", + Usage: "Language for the greeting", + }, + cli.StringFlag{ + Name: "config, c", + Usage: "Load configuration from `FILE`", + }, + } + + app.Commands = []cli.Command{ + { + Name: "complete", + Aliases: []string{"c"}, + Usage: "complete a task on the list", + Action: func(c *cli.Context) error { + return nil + }, + }, + { + Name: "add", + Aliases: []string{"a"}, + Usage: "add a task to the list", + Action: func(c *cli.Context) error { + return nil + }, + }, + } + + sort.Sort(cli.FlagsByName(app.Flags)) + sort.Sort(cli.CommandsByName(app.Commands)) + + app.Run(os.Args) +} +``` + +Will result in help output like: + +``` +--config FILE, -c FILE Load configuration from FILE +--lang value, -l value Language for the greeting (default: "english") +``` + +#### Values from the Environment + +You can also have the default value set from the environment via `EnvVar`. e.g. + + +``` go +package main + +import ( + "os" + + "github.com/urfave/cli" +) + +func main() { + app := cli.NewApp() + + app.Flags = []cli.Flag { + cli.StringFlag{ + Name: "lang, l", + Value: "english", + Usage: "language for the greeting", + EnvVar: "APP_LANG", + }, + } + + app.Run(os.Args) +} +``` + +The `EnvVar` may also be given as a comma-delimited "cascade", where the first +environment variable that resolves is used as the default. + + +``` go +package main + +import ( + "os" + + "github.com/urfave/cli" +) + +func main() { + app := cli.NewApp() + + app.Flags = []cli.Flag { + cli.StringFlag{ + Name: "lang, l", + Value: "english", + Usage: "language for the greeting", + EnvVar: "LEGACY_COMPAT_LANG,APP_LANG,LANG", + }, + } + + app.Run(os.Args) +} +``` + +#### Values from alternate input sources (YAML, TOML, and others) + +There is a separate package altsrc that adds support for getting flag values +from other file input sources. + +Currently supported input source formats: +* YAML +* TOML + +In order to get values for a flag from an alternate input source the following +code would be added to wrap an existing cli.Flag like below: + +``` go + altsrc.NewIntFlag(cli.IntFlag{Name: "test"}) +``` + +Initialization must also occur for these flags. Below is an example initializing +getting data from a yaml file below. + +``` go + command.Before = altsrc.InitInputSourceWithContext(command.Flags, NewYamlSourceFromFlagFunc("load")) +``` + +The code above will use the "load" string as a flag name to get the file name of +a yaml file from the cli.Context. It will then use that file name to initialize +the yaml input source for any flags that are defined on that command. As a note +the "load" flag used would also have to be defined on the command flags in order +for this code snipped to work. + +Currently only the aboved specified formats are supported but developers can +add support for other input sources by implementing the +altsrc.InputSourceContext for their given sources. + +Here is a more complete sample of a command using YAML support: + + +``` go +package notmain + +import ( + "fmt" + "os" + + "github.com/urfave/cli" + "github.com/urfave/cli/altsrc" +) + +func main() { + app := cli.NewApp() + + flags := []cli.Flag{ + altsrc.NewIntFlag(cli.IntFlag{Name: "test"}), + cli.StringFlag{Name: "load"}, + } + + app.Action = func(c *cli.Context) error { + fmt.Println("yaml ist rad") + return nil + } + + app.Before = altsrc.InitInputSourceWithContext(flags, altsrc.NewYamlSourceFromFlagFunc("load")) + app.Flags = flags + + app.Run(os.Args) +} +``` + +### Subcommands + +Subcommands can be defined for a more git-like command line app. + + +```go +package main + +import ( + "fmt" + "os" + + "github.com/urfave/cli" +) + +func main() { + app := cli.NewApp() + + app.Commands = []cli.Command{ + { + Name: "add", + Aliases: []string{"a"}, + Usage: "add a task to the list", + Action: func(c *cli.Context) error { + fmt.Println("added task: ", c.Args().First()) + return nil + }, + }, + { + Name: "complete", + Aliases: []string{"c"}, + Usage: "complete a task on the list", + Action: func(c *cli.Context) error { + fmt.Println("completed task: ", c.Args().First()) + return nil + }, + }, + { + Name: "template", + Aliases: []string{"t"}, + Usage: "options for task templates", + Subcommands: []cli.Command{ + { + Name: "add", + Usage: "add a new template", + Action: func(c *cli.Context) error { + fmt.Println("new task template: ", c.Args().First()) + return nil + }, + }, + { + Name: "remove", + Usage: "remove an existing template", + Action: func(c *cli.Context) error { + fmt.Println("removed task template: ", c.Args().First()) + return nil + }, + }, + }, + }, + } + + app.Run(os.Args) +} +``` + +### Subcommands categories + +For additional organization in apps that have many subcommands, you can +associate a category for each command to group them together in the help +output. + +E.g. + +```go +package main + +import ( + "os" + + "github.com/urfave/cli" +) + +func main() { + app := cli.NewApp() + + app.Commands = []cli.Command{ + { + Name: "noop", + }, + { + Name: "add", + Category: "template", + }, + { + Name: "remove", + Category: "template", + }, + } + + app.Run(os.Args) +} +``` + +Will include: + +``` +COMMANDS: + noop + + Template actions: + add + remove +``` + +### Exit code + +Calling `App.Run` will not automatically call `os.Exit`, which means that by +default the exit code will "fall through" to being `0`. An explicit exit code +may be set by returning a non-nil error that fulfills `cli.ExitCoder`, *or* a +`cli.MultiError` that includes an error that fulfills `cli.ExitCoder`, e.g.: + +``` go +package main + +import ( + "os" + + "github.com/urfave/cli" +) + +func main() { + app := cli.NewApp() + app.Flags = []cli.Flag{ + cli.BoolTFlag{ + Name: "ginger-crouton", + Usage: "is it in the soup?", + }, + } + app.Action = func(ctx *cli.Context) error { + if !ctx.Bool("ginger-crouton") { + return cli.NewExitError("it is not in the soup", 86) + } + return nil + } + + app.Run(os.Args) +} +``` + +### Bash Completion + +You can enable completion commands by setting the `EnableBashCompletion` +flag on the `App` object. By default, this setting will only auto-complete to +show an app's subcommands, but you can write your own completion methods for +the App or its subcommands. + + +``` go +package main + +import ( + "fmt" + "os" + + "github.com/urfave/cli" +) + +func main() { + tasks := []string{"cook", "clean", "laundry", "eat", "sleep", "code"} + + app := cli.NewApp() + app.EnableBashCompletion = true + app.Commands = []cli.Command{ + { + Name: "complete", + Aliases: []string{"c"}, + Usage: "complete a task on the list", + Action: func(c *cli.Context) error { + fmt.Println("completed task: ", c.Args().First()) + return nil + }, + BashComplete: func(c *cli.Context) { + // This will complete if no args are passed + if c.NArg() > 0 { + return + } + for _, t := range tasks { + fmt.Println(t) + } + }, + }, + } + + app.Run(os.Args) +} +``` + +#### Enabling + +Source the `autocomplete/bash_autocomplete` file in your `.bashrc` file while +setting the `PROG` variable to the name of your program: + +`PROG=myprogram source /.../cli/autocomplete/bash_autocomplete` + +#### Distribution + +Copy `autocomplete/bash_autocomplete` into `/etc/bash_completion.d/` and rename +it to the name of the program you wish to add autocomplete support for (or +automatically install it there if you are distributing a package). Don't forget +to source the file to make it active in the current shell. + +``` +sudo cp src/bash_autocomplete /etc/bash_completion.d/ +source /etc/bash_completion.d/ +``` + +Alternatively, you can just document that users should source the generic +`autocomplete/bash_autocomplete` in their bash configuration with `$PROG` set +to the name of their program (as above). + +#### Customization + +The default bash completion flag (`--generate-bash-completion`) is defined as +`cli.BashCompletionFlag`, and may be redefined if desired, e.g.: + + +``` go +package main + +import ( + "os" + + "github.com/urfave/cli" +) + +func main() { + cli.BashCompletionFlag = cli.BoolFlag{ + Name: "compgen", + Hidden: true, + } + + app := cli.NewApp() + app.EnableBashCompletion = true + app.Commands = []cli.Command{ + { + Name: "wat", + }, + } + app.Run(os.Args) +} +``` + +### Generated Help Text + +The default help flag (`-h/--help`) is defined as `cli.HelpFlag` and is checked +by the cli internals in order to print generated help text for the app, command, +or subcommand, and break execution. + +#### Customization + +All of the help text generation may be customized, and at multiple levels. The +templates are exposed as variables `AppHelpTemplate`, `CommandHelpTemplate`, and +`SubcommandHelpTemplate` which may be reassigned or augmented, and full override +is possible by assigning a compatible func to the `cli.HelpPrinter` variable, +e.g.: + + +``` go +package main + +import ( + "fmt" + "io" + "os" + + "github.com/urfave/cli" +) + +func main() { + // EXAMPLE: Append to an existing template + cli.AppHelpTemplate = fmt.Sprintf(`%s + +WEBSITE: http://awesometown.example.com + +SUPPORT: support@awesometown.example.com + +`, cli.AppHelpTemplate) + + // EXAMPLE: Override a template + cli.AppHelpTemplate = `NAME: + {{.Name}} - {{.Usage}} +USAGE: + {{.HelpName}} {{if .VisibleFlags}}[global options]{{end}}{{if .Commands}} command [command options]{{end}} {{if .ArgsUsage}}{{.ArgsUsage}}{{else}}[arguments...]{{end}} + {{if len .Authors}} +AUTHOR: + {{range .Authors}}{{ . }}{{end}} + {{end}}{{if .Commands}} +COMMANDS: +{{range .Commands}}{{if not .HideHelp}} {{join .Names ", "}}{{ "\t"}}{{.Usage}}{{ "\n" }}{{end}}{{end}}{{end}}{{if .VisibleFlags}} +GLOBAL OPTIONS: + {{range .VisibleFlags}}{{.}} + {{end}}{{end}}{{if .Copyright }} +COPYRIGHT: + {{.Copyright}} + {{end}}{{if .Version}} +VERSION: + {{.Version}} + {{end}} +` + + // EXAMPLE: Replace the `HelpPrinter` func + cli.HelpPrinter = func(w io.Writer, templ string, data interface{}) { + fmt.Println("Ha HA. I pwnd the help!!1") + } + + cli.NewApp().Run(os.Args) +} +``` + +The default flag may be customized to something other than `-h/--help` by +setting `cli.HelpFlag`, e.g.: + + +``` go +package main + +import ( + "os" + + "github.com/urfave/cli" +) + +func main() { + cli.HelpFlag = cli.BoolFlag{ + Name: "halp, haaaaalp", + Usage: "HALP", + EnvVar: "SHOW_HALP,HALPPLZ", + } + + cli.NewApp().Run(os.Args) +} +``` + +### Version Flag + +The default version flag (`-v/--version`) is defined as `cli.VersionFlag`, which +is checked by the cli internals in order to print the `App.Version` via +`cli.VersionPrinter` and break execution. + +#### Customization + +The default flag may be customized to something other than `-v/--version` by +setting `cli.VersionFlag`, e.g.: + + +``` go +package main + +import ( + "os" + + "github.com/urfave/cli" +) + +func main() { + cli.VersionFlag = cli.BoolFlag{ + Name: "print-version, V", + Usage: "print only the version", + } + + app := cli.NewApp() + app.Name = "partay" + app.Version = "19.99.0" + app.Run(os.Args) +} +``` + +Alternatively, the version printer at `cli.VersionPrinter` may be overridden, e.g.: + + +``` go +package main + +import ( + "fmt" + "os" + + "github.com/urfave/cli" +) + +var ( + Revision = "fafafaf" +) + +func main() { + cli.VersionPrinter = func(c *cli.Context) { + fmt.Printf("version=%s revision=%s\n", c.App.Version, Revision) + } + + app := cli.NewApp() + app.Name = "partay" + app.Version = "19.99.0" + app.Run(os.Args) +} +``` + +#### Full API Example + +**Notice**: This is a contrived (functioning) example meant strictly for API +demonstration purposes. Use of one's imagination is encouraged. + + +``` go +package main + +import ( + "errors" + "flag" + "fmt" + "io" + "io/ioutil" + "os" + "time" + + "github.com/urfave/cli" +) + +func init() { + cli.AppHelpTemplate += "\nCUSTOMIZED: you bet ur muffins\n" + cli.CommandHelpTemplate += "\nYMMV\n" + cli.SubcommandHelpTemplate += "\nor something\n" + + cli.HelpFlag = cli.BoolFlag{Name: "halp"} + cli.BashCompletionFlag = cli.BoolFlag{Name: "compgen", Hidden: true} + cli.VersionFlag = cli.BoolFlag{Name: "print-version, V"} + + cli.HelpPrinter = func(w io.Writer, templ string, data interface{}) { + fmt.Fprintf(w, "best of luck to you\n") + } + cli.VersionPrinter = func(c *cli.Context) { + fmt.Fprintf(c.App.Writer, "version=%s\n", c.App.Version) + } + cli.OsExiter = func(c int) { + fmt.Fprintf(cli.ErrWriter, "refusing to exit %d\n", c) + } + cli.ErrWriter = ioutil.Discard + cli.FlagStringer = func(fl cli.Flag) string { + return fmt.Sprintf("\t\t%s", fl.GetName()) + } +} + +type hexWriter struct{} + +func (w *hexWriter) Write(p []byte) (int, error) { + for _, b := range p { + fmt.Printf("%x", b) + } + fmt.Printf("\n") + + return len(p), nil +} + +type genericType struct{ + s string +} + +func (g *genericType) Set(value string) error { + g.s = value + return nil +} + +func (g *genericType) String() string { + return g.s +} + +func main() { + app := cli.NewApp() + app.Name = "kənˈtrīv" + app.Version = "19.99.0" + app.Compiled = time.Now() + app.Authors = []cli.Author{ + cli.Author{ + Name: "Example Human", + Email: "human@example.com", + }, + } + app.Copyright = "(c) 1999 Serious Enterprise" + app.HelpName = "contrive" + app.Usage = "demonstrate available API" + app.UsageText = "contrive - demonstrating the available API" + app.ArgsUsage = "[args and such]" + app.Commands = []cli.Command{ + cli.Command{ + Name: "doo", + Aliases: []string{"do"}, + Category: "motion", + Usage: "do the doo", + UsageText: "doo - does the dooing", + Description: "no really, there is a lot of dooing to be done", + ArgsUsage: "[arrgh]", + Flags: []cli.Flag{ + cli.BoolFlag{Name: "forever, forevvarr"}, + }, + Subcommands: cli.Commands{ + cli.Command{ + Name: "wop", + Action: wopAction, + }, + }, + SkipFlagParsing: false, + HideHelp: false, + Hidden: false, + HelpName: "doo!", + BashComplete: func(c *cli.Context) { + fmt.Fprintf(c.App.Writer, "--better\n") + }, + Before: func(c *cli.Context) error { + fmt.Fprintf(c.App.Writer, "brace for impact\n") + return nil + }, + After: func(c *cli.Context) error { + fmt.Fprintf(c.App.Writer, "did we lose anyone?\n") + return nil + }, + Action: func(c *cli.Context) error { + c.Command.FullName() + c.Command.HasName("wop") + c.Command.Names() + c.Command.VisibleFlags() + fmt.Fprintf(c.App.Writer, "dodododododoodododddooooododododooo\n") + if c.Bool("forever") { + c.Command.Run(c) + } + return nil + }, + OnUsageError: func(c *cli.Context, err error, isSubcommand bool) error { + fmt.Fprintf(c.App.Writer, "for shame\n") + return err + }, + }, + } + app.Flags = []cli.Flag{ + cli.BoolFlag{Name: "fancy"}, + cli.BoolTFlag{Name: "fancier"}, + cli.DurationFlag{Name: "howlong, H", Value: time.Second * 3}, + cli.Float64Flag{Name: "howmuch"}, + cli.GenericFlag{Name: "wat", Value: &genericType{}}, + cli.Int64Flag{Name: "longdistance"}, + cli.Int64SliceFlag{Name: "intervals"}, + cli.IntFlag{Name: "distance"}, + cli.IntSliceFlag{Name: "times"}, + cli.StringFlag{Name: "dance-move, d"}, + cli.StringSliceFlag{Name: "names, N"}, + cli.UintFlag{Name: "age"}, + cli.Uint64Flag{Name: "bigage"}, + } + app.EnableBashCompletion = true + app.HideHelp = false + app.HideVersion = false + app.BashComplete = func(c *cli.Context) { + fmt.Fprintf(c.App.Writer, "lipstick\nkiss\nme\nlipstick\nringo\n") + } + app.Before = func(c *cli.Context) error { + fmt.Fprintf(c.App.Writer, "HEEEERE GOES\n") + return nil + } + app.After = func(c *cli.Context) error { + fmt.Fprintf(c.App.Writer, "Phew!\n") + return nil + } + app.CommandNotFound = func(c *cli.Context, command string) { + fmt.Fprintf(c.App.Writer, "Thar be no %q here.\n", command) + } + app.OnUsageError = func(c *cli.Context, err error, isSubcommand bool) error { + if isSubcommand { + return err + } + + fmt.Fprintf(c.App.Writer, "WRONG: %#v\n", err) + return nil + } + app.Action = func(c *cli.Context) error { + cli.DefaultAppComplete(c) + cli.HandleExitCoder(errors.New("not an exit coder, though")) + cli.ShowAppHelp(c) + cli.ShowCommandCompletions(c, "nope") + cli.ShowCommandHelp(c, "also-nope") + cli.ShowCompletions(c) + cli.ShowSubcommandHelp(c) + cli.ShowVersion(c) + + categories := c.App.Categories() + categories.AddCommand("sounds", cli.Command{ + Name: "bloop", + }) + + for _, category := range c.App.Categories() { + fmt.Fprintf(c.App.Writer, "%s\n", category.Name) + fmt.Fprintf(c.App.Writer, "%#v\n", category.Commands) + fmt.Fprintf(c.App.Writer, "%#v\n", category.VisibleCommands()) + } + + fmt.Printf("%#v\n", c.App.Command("doo")) + if c.Bool("infinite") { + c.App.Run([]string{"app", "doo", "wop"}) + } + + if c.Bool("forevar") { + c.App.RunAsSubcommand(c) + } + c.App.Setup() + fmt.Printf("%#v\n", c.App.VisibleCategories()) + fmt.Printf("%#v\n", c.App.VisibleCommands()) + fmt.Printf("%#v\n", c.App.VisibleFlags()) + + fmt.Printf("%#v\n", c.Args().First()) + if len(c.Args()) > 0 { + fmt.Printf("%#v\n", c.Args()[1]) + } + fmt.Printf("%#v\n", c.Args().Present()) + fmt.Printf("%#v\n", c.Args().Tail()) + + set := flag.NewFlagSet("contrive", 0) + nc := cli.NewContext(c.App, set, c) + + fmt.Printf("%#v\n", nc.Args()) + fmt.Printf("%#v\n", nc.Bool("nope")) + fmt.Printf("%#v\n", nc.BoolT("nerp")) + fmt.Printf("%#v\n", nc.Duration("howlong")) + fmt.Printf("%#v\n", nc.Float64("hay")) + fmt.Printf("%#v\n", nc.Generic("bloop")) + fmt.Printf("%#v\n", nc.Int64("bonk")) + fmt.Printf("%#v\n", nc.Int64Slice("burnks")) + fmt.Printf("%#v\n", nc.Int("bips")) + fmt.Printf("%#v\n", nc.IntSlice("blups")) + fmt.Printf("%#v\n", nc.String("snurt")) + fmt.Printf("%#v\n", nc.StringSlice("snurkles")) + fmt.Printf("%#v\n", nc.Uint("flub")) + fmt.Printf("%#v\n", nc.Uint64("florb")) + fmt.Printf("%#v\n", nc.GlobalBool("global-nope")) + fmt.Printf("%#v\n", nc.GlobalBoolT("global-nerp")) + fmt.Printf("%#v\n", nc.GlobalDuration("global-howlong")) + fmt.Printf("%#v\n", nc.GlobalFloat64("global-hay")) + fmt.Printf("%#v\n", nc.GlobalGeneric("global-bloop")) + fmt.Printf("%#v\n", nc.GlobalInt("global-bips")) + fmt.Printf("%#v\n", nc.GlobalIntSlice("global-blups")) + fmt.Printf("%#v\n", nc.GlobalString("global-snurt")) + fmt.Printf("%#v\n", nc.GlobalStringSlice("global-snurkles")) + + fmt.Printf("%#v\n", nc.FlagNames()) + fmt.Printf("%#v\n", nc.GlobalFlagNames()) + fmt.Printf("%#v\n", nc.GlobalIsSet("wat")) + fmt.Printf("%#v\n", nc.GlobalSet("wat", "nope")) + fmt.Printf("%#v\n", nc.NArg()) + fmt.Printf("%#v\n", nc.NumFlags()) + fmt.Printf("%#v\n", nc.Parent()) + + nc.Set("wat", "also-nope") + + ec := cli.NewExitError("ohwell", 86) + fmt.Fprintf(c.App.Writer, "%d", ec.ExitCode()) + fmt.Printf("made it!\n") + return ec + } + + if os.Getenv("HEXY") != "" { + app.Writer = &hexWriter{} + app.ErrWriter = &hexWriter{} + } + + app.Metadata = map[string]interface{}{ + "layers": "many", + "explicable": false, + "whatever-values": 19.99, + } + + app.Run(os.Args) +} + +func wopAction(c *cli.Context) error { + fmt.Fprintf(c.App.Writer, ":wave: over here, eh\n") + return nil +} +``` + +## Contribution Guidelines + +Feel free to put up a pull request to fix a bug or maybe add a feature. I will +give it a code review and make sure that it does not break backwards +compatibility. If I or any other collaborators agree that it is in line with +the vision of the project, we will work with you to get the code into +a mergeable state and merge it into the master branch. + +If you have contributed something significant to the project, we will most +likely add you as a collaborator. As a collaborator you are given the ability +to merge others pull requests. It is very important that new code does not +break existing code, so be careful about what code you do choose to merge. + +If you feel like you have contributed to the project but have not yet been +added as a collaborator, we probably forgot to add you, please open an issue. diff --git a/vendor/github.com/urfave/cli/app.go b/vendor/github.com/urfave/cli/app.go new file mode 100644 index 0000000..51fc45d --- /dev/null +++ b/vendor/github.com/urfave/cli/app.go @@ -0,0 +1,497 @@ +package cli + +import ( + "fmt" + "io" + "io/ioutil" + "os" + "path/filepath" + "sort" + "time" +) + +var ( + changeLogURL = "https://github.com/urfave/cli/blob/master/CHANGELOG.md" + appActionDeprecationURL = fmt.Sprintf("%s#deprecated-cli-app-action-signature", changeLogURL) + runAndExitOnErrorDeprecationURL = fmt.Sprintf("%s#deprecated-cli-app-runandexitonerror", changeLogURL) + + contactSysadmin = "This is an error in the application. Please contact the distributor of this application if this is not you." + + errInvalidActionType = NewExitError("ERROR invalid Action type. "+ + fmt.Sprintf("Must be `func(*Context`)` or `func(*Context) error). %s", contactSysadmin)+ + fmt.Sprintf("See %s", appActionDeprecationURL), 2) +) + +// App is the main structure of a cli application. It is recommended that +// an app be created with the cli.NewApp() function +type App struct { + // The name of the program. Defaults to path.Base(os.Args[0]) + Name string + // Full name of command for help, defaults to Name + HelpName string + // Description of the program. + Usage string + // Text to override the USAGE section of help + UsageText string + // Description of the program argument format. + ArgsUsage string + // Version of the program + Version string + // Description of the program + Description string + // List of commands to execute + Commands []Command + // List of flags to parse + Flags []Flag + // Boolean to enable bash completion commands + EnableBashCompletion bool + // Boolean to hide built-in help command + HideHelp bool + // Boolean to hide built-in version flag and the VERSION section of help + HideVersion bool + // Populate on app startup, only gettable through method Categories() + categories CommandCategories + // An action to execute when the bash-completion flag is set + BashComplete BashCompleteFunc + // An action to execute before any subcommands are run, but after the context is ready + // If a non-nil error is returned, no subcommands are run + Before BeforeFunc + // An action to execute after any subcommands are run, but after the subcommand has finished + // It is run even if Action() panics + After AfterFunc + + // The action to execute when no subcommands are specified + // Expects a `cli.ActionFunc` but will accept the *deprecated* signature of `func(*cli.Context) {}` + // *Note*: support for the deprecated `Action` signature will be removed in a future version + Action interface{} + + // Execute this function if the proper command cannot be found + CommandNotFound CommandNotFoundFunc + // Execute this function if an usage error occurs + OnUsageError OnUsageErrorFunc + // Compilation date + Compiled time.Time + // List of all authors who contributed + Authors []Author + // Copyright of the binary if any + Copyright string + // Name of Author (Note: Use App.Authors, this is deprecated) + Author string + // Email of Author (Note: Use App.Authors, this is deprecated) + Email string + // Writer writer to write output to + Writer io.Writer + // ErrWriter writes error output + ErrWriter io.Writer + // Other custom info + Metadata map[string]interface{} + // Carries a function which returns app specific info. + ExtraInfo func() map[string]string + // CustomAppHelpTemplate the text template for app help topic. + // cli.go uses text/template to render templates. You can + // render custom help text by setting this variable. + CustomAppHelpTemplate string + + didSetup bool +} + +// Tries to find out when this binary was compiled. +// Returns the current time if it fails to find it. +func compileTime() time.Time { + info, err := os.Stat(os.Args[0]) + if err != nil { + return time.Now() + } + return info.ModTime() +} + +// NewApp creates a new cli Application with some reasonable defaults for Name, +// Usage, Version and Action. +func NewApp() *App { + return &App{ + Name: filepath.Base(os.Args[0]), + HelpName: filepath.Base(os.Args[0]), + Usage: "A new cli application", + UsageText: "", + Version: "0.0.0", + BashComplete: DefaultAppComplete, + Action: helpCommand.Action, + Compiled: compileTime(), + Writer: os.Stdout, + } +} + +// Setup runs initialization code to ensure all data structures are ready for +// `Run` or inspection prior to `Run`. It is internally called by `Run`, but +// will return early if setup has already happened. +func (a *App) Setup() { + if a.didSetup { + return + } + + a.didSetup = true + + if a.Author != "" || a.Email != "" { + a.Authors = append(a.Authors, Author{Name: a.Author, Email: a.Email}) + } + + newCmds := []Command{} + for _, c := range a.Commands { + if c.HelpName == "" { + c.HelpName = fmt.Sprintf("%s %s", a.HelpName, c.Name) + } + newCmds = append(newCmds, c) + } + a.Commands = newCmds + + if a.Command(helpCommand.Name) == nil && !a.HideHelp { + a.Commands = append(a.Commands, helpCommand) + if (HelpFlag != BoolFlag{}) { + a.appendFlag(HelpFlag) + } + } + + if !a.HideVersion { + a.appendFlag(VersionFlag) + } + + a.categories = CommandCategories{} + for _, command := range a.Commands { + a.categories = a.categories.AddCommand(command.Category, command) + } + sort.Sort(a.categories) + + if a.Metadata == nil { + a.Metadata = make(map[string]interface{}) + } + + if a.Writer == nil { + a.Writer = os.Stdout + } +} + +// Run is the entry point to the cli app. Parses the arguments slice and routes +// to the proper flag/args combination +func (a *App) Run(arguments []string) (err error) { + a.Setup() + + // handle the completion flag separately from the flagset since + // completion could be attempted after a flag, but before its value was put + // on the command line. this causes the flagset to interpret the completion + // flag name as the value of the flag before it which is undesirable + // note that we can only do this because the shell autocomplete function + // always appends the completion flag at the end of the command + shellComplete, arguments := checkShellCompleteFlag(a, arguments) + + // parse flags + set, err := flagSet(a.Name, a.Flags) + if err != nil { + return err + } + + set.SetOutput(ioutil.Discard) + err = set.Parse(arguments[1:]) + nerr := normalizeFlags(a.Flags, set) + context := NewContext(a, set, nil) + if nerr != nil { + fmt.Fprintln(a.Writer, nerr) + ShowAppHelp(context) + return nerr + } + context.shellComplete = shellComplete + + if checkCompletions(context) { + return nil + } + + if err != nil { + if a.OnUsageError != nil { + err := a.OnUsageError(context, err, false) + HandleExitCoder(err) + return err + } + fmt.Fprintf(a.Writer, "%s %s\n\n", "Incorrect Usage.", err.Error()) + ShowAppHelp(context) + return err + } + + if !a.HideHelp && checkHelp(context) { + ShowAppHelp(context) + return nil + } + + if !a.HideVersion && checkVersion(context) { + ShowVersion(context) + return nil + } + + if a.After != nil { + defer func() { + if afterErr := a.After(context); afterErr != nil { + if err != nil { + err = NewMultiError(err, afterErr) + } else { + err = afterErr + } + } + }() + } + + if a.Before != nil { + beforeErr := a.Before(context) + if beforeErr != nil { + ShowAppHelp(context) + HandleExitCoder(beforeErr) + err = beforeErr + return err + } + } + + args := context.Args() + if args.Present() { + name := args.First() + c := a.Command(name) + if c != nil { + return c.Run(context) + } + } + + if a.Action == nil { + a.Action = helpCommand.Action + } + + // Run default Action + err = HandleAction(a.Action, context) + + HandleExitCoder(err) + return err +} + +// RunAndExitOnError calls .Run() and exits non-zero if an error was returned +// +// Deprecated: instead you should return an error that fulfills cli.ExitCoder +// to cli.App.Run. This will cause the application to exit with the given eror +// code in the cli.ExitCoder +func (a *App) RunAndExitOnError() { + if err := a.Run(os.Args); err != nil { + fmt.Fprintln(a.errWriter(), err) + OsExiter(1) + } +} + +// RunAsSubcommand invokes the subcommand given the context, parses ctx.Args() to +// generate command-specific flags +func (a *App) RunAsSubcommand(ctx *Context) (err error) { + // append help to commands + if len(a.Commands) > 0 { + if a.Command(helpCommand.Name) == nil && !a.HideHelp { + a.Commands = append(a.Commands, helpCommand) + if (HelpFlag != BoolFlag{}) { + a.appendFlag(HelpFlag) + } + } + } + + newCmds := []Command{} + for _, c := range a.Commands { + if c.HelpName == "" { + c.HelpName = fmt.Sprintf("%s %s", a.HelpName, c.Name) + } + newCmds = append(newCmds, c) + } + a.Commands = newCmds + + // parse flags + set, err := flagSet(a.Name, a.Flags) + if err != nil { + return err + } + + set.SetOutput(ioutil.Discard) + err = set.Parse(ctx.Args().Tail()) + nerr := normalizeFlags(a.Flags, set) + context := NewContext(a, set, ctx) + + if nerr != nil { + fmt.Fprintln(a.Writer, nerr) + fmt.Fprintln(a.Writer) + if len(a.Commands) > 0 { + ShowSubcommandHelp(context) + } else { + ShowCommandHelp(ctx, context.Args().First()) + } + return nerr + } + + if checkCompletions(context) { + return nil + } + + if err != nil { + if a.OnUsageError != nil { + err = a.OnUsageError(context, err, true) + HandleExitCoder(err) + return err + } + fmt.Fprintf(a.Writer, "%s %s\n\n", "Incorrect Usage.", err.Error()) + ShowSubcommandHelp(context) + return err + } + + if len(a.Commands) > 0 { + if checkSubcommandHelp(context) { + return nil + } + } else { + if checkCommandHelp(ctx, context.Args().First()) { + return nil + } + } + + if a.After != nil { + defer func() { + afterErr := a.After(context) + if afterErr != nil { + HandleExitCoder(err) + if err != nil { + err = NewMultiError(err, afterErr) + } else { + err = afterErr + } + } + }() + } + + if a.Before != nil { + beforeErr := a.Before(context) + if beforeErr != nil { + HandleExitCoder(beforeErr) + err = beforeErr + return err + } + } + + args := context.Args() + if args.Present() { + name := args.First() + c := a.Command(name) + if c != nil { + return c.Run(context) + } + } + + // Run default Action + err = HandleAction(a.Action, context) + + HandleExitCoder(err) + return err +} + +// Command returns the named command on App. Returns nil if the command does not exist +func (a *App) Command(name string) *Command { + for _, c := range a.Commands { + if c.HasName(name) { + return &c + } + } + + return nil +} + +// Categories returns a slice containing all the categories with the commands they contain +func (a *App) Categories() CommandCategories { + return a.categories +} + +// VisibleCategories returns a slice of categories and commands that are +// Hidden=false +func (a *App) VisibleCategories() []*CommandCategory { + ret := []*CommandCategory{} + for _, category := range a.categories { + if visible := func() *CommandCategory { + for _, command := range category.Commands { + if !command.Hidden { + return category + } + } + return nil + }(); visible != nil { + ret = append(ret, visible) + } + } + return ret +} + +// VisibleCommands returns a slice of the Commands with Hidden=false +func (a *App) VisibleCommands() []Command { + ret := []Command{} + for _, command := range a.Commands { + if !command.Hidden { + ret = append(ret, command) + } + } + return ret +} + +// VisibleFlags returns a slice of the Flags with Hidden=false +func (a *App) VisibleFlags() []Flag { + return visibleFlags(a.Flags) +} + +func (a *App) hasFlag(flag Flag) bool { + for _, f := range a.Flags { + if flag == f { + return true + } + } + + return false +} + +func (a *App) errWriter() io.Writer { + + // When the app ErrWriter is nil use the package level one. + if a.ErrWriter == nil { + return ErrWriter + } + + return a.ErrWriter +} + +func (a *App) appendFlag(flag Flag) { + if !a.hasFlag(flag) { + a.Flags = append(a.Flags, flag) + } +} + +// Author represents someone who has contributed to a cli project. +type Author struct { + Name string // The Authors name + Email string // The Authors email +} + +// String makes Author comply to the Stringer interface, to allow an easy print in the templating process +func (a Author) String() string { + e := "" + if a.Email != "" { + e = " <" + a.Email + ">" + } + + return fmt.Sprintf("%v%v", a.Name, e) +} + +// HandleAction attempts to figure out which Action signature was used. If +// it's an ActionFunc or a func with the legacy signature for Action, the func +// is run! +func HandleAction(action interface{}, context *Context) (err error) { + if a, ok := action.(ActionFunc); ok { + return a(context) + } else if a, ok := action.(func(*Context) error); ok { + return a(context) + } else if a, ok := action.(func(*Context)); ok { // deprecated function signature + a(context) + return nil + } else { + return errInvalidActionType + } +} diff --git a/vendor/github.com/urfave/cli/appveyor.yml b/vendor/github.com/urfave/cli/appveyor.yml new file mode 100644 index 0000000..698b188 --- /dev/null +++ b/vendor/github.com/urfave/cli/appveyor.yml @@ -0,0 +1,24 @@ +version: "{build}" + +os: Windows Server 2012 R2 + +clone_folder: c:\gopath\src\github.com\urfave\cli + +environment: + GOPATH: C:\gopath + GOVERSION: 1.6 + PYTHON: C:\Python27-x64 + PYTHON_VERSION: 2.7.x + PYTHON_ARCH: 64 + +install: +- set PATH=%GOPATH%\bin;C:\go\bin;%PATH% +- go version +- go env +- go get github.com/urfave/gfmrun/... +- go get -v -t ./... + +build_script: +- python runtests vet +- python runtests test +- python runtests gfmrun diff --git a/vendor/github.com/urfave/cli/category.go b/vendor/github.com/urfave/cli/category.go new file mode 100644 index 0000000..1a60550 --- /dev/null +++ b/vendor/github.com/urfave/cli/category.go @@ -0,0 +1,44 @@ +package cli + +// CommandCategories is a slice of *CommandCategory. +type CommandCategories []*CommandCategory + +// CommandCategory is a category containing commands. +type CommandCategory struct { + Name string + Commands Commands +} + +func (c CommandCategories) Less(i, j int) bool { + return c[i].Name < c[j].Name +} + +func (c CommandCategories) Len() int { + return len(c) +} + +func (c CommandCategories) Swap(i, j int) { + c[i], c[j] = c[j], c[i] +} + +// AddCommand adds a command to a category. +func (c CommandCategories) AddCommand(category string, command Command) CommandCategories { + for _, commandCategory := range c { + if commandCategory.Name == category { + commandCategory.Commands = append(commandCategory.Commands, command) + return c + } + } + return append(c, &CommandCategory{Name: category, Commands: []Command{command}}) +} + +// VisibleCommands returns a slice of the Commands with Hidden=false +func (c *CommandCategory) VisibleCommands() []Command { + ret := []Command{} + for _, command := range c.Commands { + if !command.Hidden { + ret = append(ret, command) + } + } + return ret +} diff --git a/vendor/github.com/urfave/cli/cli.go b/vendor/github.com/urfave/cli/cli.go new file mode 100644 index 0000000..90c07eb --- /dev/null +++ b/vendor/github.com/urfave/cli/cli.go @@ -0,0 +1,22 @@ +// Package cli provides a minimal framework for creating and organizing command line +// Go applications. cli is designed to be easy to understand and write, the most simple +// cli application can be written as follows: +// func main() { +// cli.NewApp().Run(os.Args) +// } +// +// Of course this application does not do much, so let's make this an actual application: +// func main() { +// app := cli.NewApp() +// app.Name = "greet" +// app.Usage = "say a greeting" +// app.Action = func(c *cli.Context) error { +// println("Greetings") +// return nil +// } +// +// app.Run(os.Args) +// } +package cli + +//go:generate python ./generate-flag-types cli -i flag-types.json -o flag_generated.go diff --git a/vendor/github.com/urfave/cli/command.go b/vendor/github.com/urfave/cli/command.go new file mode 100644 index 0000000..23de294 --- /dev/null +++ b/vendor/github.com/urfave/cli/command.go @@ -0,0 +1,304 @@ +package cli + +import ( + "fmt" + "io/ioutil" + "sort" + "strings" +) + +// Command is a subcommand for a cli.App. +type Command struct { + // The name of the command + Name string + // short name of the command. Typically one character (deprecated, use `Aliases`) + ShortName string + // A list of aliases for the command + Aliases []string + // A short description of the usage of this command + Usage string + // Custom text to show on USAGE section of help + UsageText string + // A longer explanation of how the command works + Description string + // A short description of the arguments of this command + ArgsUsage string + // The category the command is part of + Category string + // The function to call when checking for bash command completions + BashComplete BashCompleteFunc + // An action to execute before any sub-subcommands are run, but after the context is ready + // If a non-nil error is returned, no sub-subcommands are run + Before BeforeFunc + // An action to execute after any subcommands are run, but after the subcommand has finished + // It is run even if Action() panics + After AfterFunc + // The function to call when this command is invoked + Action interface{} + // TODO: replace `Action: interface{}` with `Action: ActionFunc` once some kind + // of deprecation period has passed, maybe? + + // Execute this function if a usage error occurs. + OnUsageError OnUsageErrorFunc + // List of child commands + Subcommands Commands + // List of flags to parse + Flags []Flag + // Treat all flags as normal arguments if true + SkipFlagParsing bool + // Skip argument reordering which attempts to move flags before arguments, + // but only works if all flags appear after all arguments. This behavior was + // removed n version 2 since it only works under specific conditions so we + // backport here by exposing it as an option for compatibility. + SkipArgReorder bool + // Boolean to hide built-in help command + HideHelp bool + // Boolean to hide this command from help or completion + Hidden bool + + // Full name of command for help, defaults to full command name, including parent commands. + HelpName string + commandNamePath []string + + // CustomHelpTemplate the text template for the command help topic. + // cli.go uses text/template to render templates. You can + // render custom help text by setting this variable. + CustomHelpTemplate string +} + +type CommandsByName []Command + +func (c CommandsByName) Len() int { + return len(c) +} + +func (c CommandsByName) Less(i, j int) bool { + return c[i].Name < c[j].Name +} + +func (c CommandsByName) Swap(i, j int) { + c[i], c[j] = c[j], c[i] +} + +// FullName returns the full name of the command. +// For subcommands this ensures that parent commands are part of the command path +func (c Command) FullName() string { + if c.commandNamePath == nil { + return c.Name + } + return strings.Join(c.commandNamePath, " ") +} + +// Commands is a slice of Command +type Commands []Command + +// Run invokes the command given the context, parses ctx.Args() to generate command-specific flags +func (c Command) Run(ctx *Context) (err error) { + if len(c.Subcommands) > 0 { + return c.startApp(ctx) + } + + if !c.HideHelp && (HelpFlag != BoolFlag{}) { + // append help to flags + c.Flags = append( + c.Flags, + HelpFlag, + ) + } + + set, err := flagSet(c.Name, c.Flags) + if err != nil { + return err + } + set.SetOutput(ioutil.Discard) + + if c.SkipFlagParsing { + err = set.Parse(append([]string{"--"}, ctx.Args().Tail()...)) + } else if !c.SkipArgReorder { + firstFlagIndex := -1 + terminatorIndex := -1 + for index, arg := range ctx.Args() { + if arg == "--" { + terminatorIndex = index + break + } else if arg == "-" { + // Do nothing. A dash alone is not really a flag. + continue + } else if strings.HasPrefix(arg, "-") && firstFlagIndex == -1 { + firstFlagIndex = index + } + } + + if firstFlagIndex > -1 { + args := ctx.Args() + regularArgs := make([]string, len(args[1:firstFlagIndex])) + copy(regularArgs, args[1:firstFlagIndex]) + + var flagArgs []string + if terminatorIndex > -1 { + flagArgs = args[firstFlagIndex:terminatorIndex] + regularArgs = append(regularArgs, args[terminatorIndex:]...) + } else { + flagArgs = args[firstFlagIndex:] + } + + err = set.Parse(append(flagArgs, regularArgs...)) + } else { + err = set.Parse(ctx.Args().Tail()) + } + } else { + err = set.Parse(ctx.Args().Tail()) + } + + nerr := normalizeFlags(c.Flags, set) + if nerr != nil { + fmt.Fprintln(ctx.App.Writer, nerr) + fmt.Fprintln(ctx.App.Writer) + ShowCommandHelp(ctx, c.Name) + return nerr + } + + context := NewContext(ctx.App, set, ctx) + context.Command = c + if checkCommandCompletions(context, c.Name) { + return nil + } + + if err != nil { + if c.OnUsageError != nil { + err := c.OnUsageError(context, err, false) + HandleExitCoder(err) + return err + } + fmt.Fprintln(context.App.Writer, "Incorrect Usage:", err.Error()) + fmt.Fprintln(context.App.Writer) + ShowCommandHelp(context, c.Name) + return err + } + + if checkCommandHelp(context, c.Name) { + return nil + } + + if c.After != nil { + defer func() { + afterErr := c.After(context) + if afterErr != nil { + HandleExitCoder(err) + if err != nil { + err = NewMultiError(err, afterErr) + } else { + err = afterErr + } + } + }() + } + + if c.Before != nil { + err = c.Before(context) + if err != nil { + ShowCommandHelp(context, c.Name) + HandleExitCoder(err) + return err + } + } + + if c.Action == nil { + c.Action = helpSubcommand.Action + } + + err = HandleAction(c.Action, context) + + if err != nil { + HandleExitCoder(err) + } + return err +} + +// Names returns the names including short names and aliases. +func (c Command) Names() []string { + names := []string{c.Name} + + if c.ShortName != "" { + names = append(names, c.ShortName) + } + + return append(names, c.Aliases...) +} + +// HasName returns true if Command.Name or Command.ShortName matches given name +func (c Command) HasName(name string) bool { + for _, n := range c.Names() { + if n == name { + return true + } + } + return false +} + +func (c Command) startApp(ctx *Context) error { + app := NewApp() + app.Metadata = ctx.App.Metadata + // set the name and usage + app.Name = fmt.Sprintf("%s %s", ctx.App.Name, c.Name) + if c.HelpName == "" { + app.HelpName = c.HelpName + } else { + app.HelpName = app.Name + } + + app.Usage = c.Usage + app.Description = c.Description + app.ArgsUsage = c.ArgsUsage + + // set CommandNotFound + app.CommandNotFound = ctx.App.CommandNotFound + app.CustomAppHelpTemplate = c.CustomHelpTemplate + + // set the flags and commands + app.Commands = c.Subcommands + app.Flags = c.Flags + app.HideHelp = c.HideHelp + + app.Version = ctx.App.Version + app.HideVersion = ctx.App.HideVersion + app.Compiled = ctx.App.Compiled + app.Author = ctx.App.Author + app.Email = ctx.App.Email + app.Writer = ctx.App.Writer + app.ErrWriter = ctx.App.ErrWriter + + app.categories = CommandCategories{} + for _, command := range c.Subcommands { + app.categories = app.categories.AddCommand(command.Category, command) + } + + sort.Sort(app.categories) + + // bash completion + app.EnableBashCompletion = ctx.App.EnableBashCompletion + if c.BashComplete != nil { + app.BashComplete = c.BashComplete + } + + // set the actions + app.Before = c.Before + app.After = c.After + if c.Action != nil { + app.Action = c.Action + } else { + app.Action = helpSubcommand.Action + } + app.OnUsageError = c.OnUsageError + + for index, cc := range app.Commands { + app.Commands[index].commandNamePath = []string{c.Name, cc.Name} + } + + return app.RunAsSubcommand(ctx) +} + +// VisibleFlags returns a slice of the Flags with Hidden=false +func (c Command) VisibleFlags() []Flag { + return visibleFlags(c.Flags) +} diff --git a/vendor/github.com/urfave/cli/context.go b/vendor/github.com/urfave/cli/context.go new file mode 100644 index 0000000..db94191 --- /dev/null +++ b/vendor/github.com/urfave/cli/context.go @@ -0,0 +1,278 @@ +package cli + +import ( + "errors" + "flag" + "reflect" + "strings" + "syscall" +) + +// Context is a type that is passed through to +// each Handler action in a cli application. Context +// can be used to retrieve context-specific Args and +// parsed command-line options. +type Context struct { + App *App + Command Command + shellComplete bool + flagSet *flag.FlagSet + setFlags map[string]bool + parentContext *Context +} + +// NewContext creates a new context. For use in when invoking an App or Command action. +func NewContext(app *App, set *flag.FlagSet, parentCtx *Context) *Context { + c := &Context{App: app, flagSet: set, parentContext: parentCtx} + + if parentCtx != nil { + c.shellComplete = parentCtx.shellComplete + } + + return c +} + +// NumFlags returns the number of flags set +func (c *Context) NumFlags() int { + return c.flagSet.NFlag() +} + +// Set sets a context flag to a value. +func (c *Context) Set(name, value string) error { + c.setFlags = nil + return c.flagSet.Set(name, value) +} + +// GlobalSet sets a context flag to a value on the global flagset +func (c *Context) GlobalSet(name, value string) error { + globalContext(c).setFlags = nil + return globalContext(c).flagSet.Set(name, value) +} + +// IsSet determines if the flag was actually set +func (c *Context) IsSet(name string) bool { + if c.setFlags == nil { + c.setFlags = make(map[string]bool) + + c.flagSet.Visit(func(f *flag.Flag) { + c.setFlags[f.Name] = true + }) + + c.flagSet.VisitAll(func(f *flag.Flag) { + if _, ok := c.setFlags[f.Name]; ok { + return + } + c.setFlags[f.Name] = false + }) + + // XXX hack to support IsSet for flags with EnvVar + // + // There isn't an easy way to do this with the current implementation since + // whether a flag was set via an environment variable is very difficult to + // determine here. Instead, we intend to introduce a backwards incompatible + // change in version 2 to add `IsSet` to the Flag interface to push the + // responsibility closer to where the information required to determine + // whether a flag is set by non-standard means such as environment + // variables is avaliable. + // + // See https://github.com/urfave/cli/issues/294 for additional discussion + flags := c.Command.Flags + if c.Command.Name == "" { // cannot == Command{} since it contains slice types + if c.App != nil { + flags = c.App.Flags + } + } + for _, f := range flags { + eachName(f.GetName(), func(name string) { + if isSet, ok := c.setFlags[name]; isSet || !ok { + return + } + + val := reflect.ValueOf(f) + if val.Kind() == reflect.Ptr { + val = val.Elem() + } + + envVarValue := val.FieldByName("EnvVar") + if !envVarValue.IsValid() { + return + } + + eachName(envVarValue.String(), func(envVar string) { + envVar = strings.TrimSpace(envVar) + if _, ok := syscall.Getenv(envVar); ok { + c.setFlags[name] = true + return + } + }) + }) + } + } + + return c.setFlags[name] +} + +// GlobalIsSet determines if the global flag was actually set +func (c *Context) GlobalIsSet(name string) bool { + ctx := c + if ctx.parentContext != nil { + ctx = ctx.parentContext + } + + for ; ctx != nil; ctx = ctx.parentContext { + if ctx.IsSet(name) { + return true + } + } + return false +} + +// FlagNames returns a slice of flag names used in this context. +func (c *Context) FlagNames() (names []string) { + for _, flag := range c.Command.Flags { + name := strings.Split(flag.GetName(), ",")[0] + if name == "help" { + continue + } + names = append(names, name) + } + return +} + +// GlobalFlagNames returns a slice of global flag names used by the app. +func (c *Context) GlobalFlagNames() (names []string) { + for _, flag := range c.App.Flags { + name := strings.Split(flag.GetName(), ",")[0] + if name == "help" || name == "version" { + continue + } + names = append(names, name) + } + return +} + +// Parent returns the parent context, if any +func (c *Context) Parent() *Context { + return c.parentContext +} + +// value returns the value of the flag coressponding to `name` +func (c *Context) value(name string) interface{} { + return c.flagSet.Lookup(name).Value.(flag.Getter).Get() +} + +// Args contains apps console arguments +type Args []string + +// Args returns the command line arguments associated with the context. +func (c *Context) Args() Args { + args := Args(c.flagSet.Args()) + return args +} + +// NArg returns the number of the command line arguments. +func (c *Context) NArg() int { + return len(c.Args()) +} + +// Get returns the nth argument, or else a blank string +func (a Args) Get(n int) string { + if len(a) > n { + return a[n] + } + return "" +} + +// First returns the first argument, or else a blank string +func (a Args) First() string { + return a.Get(0) +} + +// Tail returns the rest of the arguments (not the first one) +// or else an empty string slice +func (a Args) Tail() []string { + if len(a) >= 2 { + return []string(a)[1:] + } + return []string{} +} + +// Present checks if there are any arguments present +func (a Args) Present() bool { + return len(a) != 0 +} + +// Swap swaps arguments at the given indexes +func (a Args) Swap(from, to int) error { + if from >= len(a) || to >= len(a) { + return errors.New("index out of range") + } + a[from], a[to] = a[to], a[from] + return nil +} + +func globalContext(ctx *Context) *Context { + if ctx == nil { + return nil + } + + for { + if ctx.parentContext == nil { + return ctx + } + ctx = ctx.parentContext + } +} + +func lookupGlobalFlagSet(name string, ctx *Context) *flag.FlagSet { + if ctx.parentContext != nil { + ctx = ctx.parentContext + } + for ; ctx != nil; ctx = ctx.parentContext { + if f := ctx.flagSet.Lookup(name); f != nil { + return ctx.flagSet + } + } + return nil +} + +func copyFlag(name string, ff *flag.Flag, set *flag.FlagSet) { + switch ff.Value.(type) { + case *StringSlice: + default: + set.Set(name, ff.Value.String()) + } +} + +func normalizeFlags(flags []Flag, set *flag.FlagSet) error { + visited := make(map[string]bool) + set.Visit(func(f *flag.Flag) { + visited[f.Name] = true + }) + for _, f := range flags { + parts := strings.Split(f.GetName(), ",") + if len(parts) == 1 { + continue + } + var ff *flag.Flag + for _, name := range parts { + name = strings.Trim(name, " ") + if visited[name] { + if ff != nil { + return errors.New("Cannot use two forms of the same flag: " + name + " " + ff.Name) + } + ff = set.Lookup(name) + } + } + if ff == nil { + continue + } + for _, name := range parts { + name = strings.Trim(name, " ") + if !visited[name] { + copyFlag(name, ff, set) + } + } + } + return nil +} diff --git a/vendor/github.com/urfave/cli/errors.go b/vendor/github.com/urfave/cli/errors.go new file mode 100644 index 0000000..562b295 --- /dev/null +++ b/vendor/github.com/urfave/cli/errors.go @@ -0,0 +1,115 @@ +package cli + +import ( + "fmt" + "io" + "os" + "strings" +) + +// OsExiter is the function used when the app exits. If not set defaults to os.Exit. +var OsExiter = os.Exit + +// ErrWriter is used to write errors to the user. This can be anything +// implementing the io.Writer interface and defaults to os.Stderr. +var ErrWriter io.Writer = os.Stderr + +// MultiError is an error that wraps multiple errors. +type MultiError struct { + Errors []error +} + +// NewMultiError creates a new MultiError. Pass in one or more errors. +func NewMultiError(err ...error) MultiError { + return MultiError{Errors: err} +} + +// Error implements the error interface. +func (m MultiError) Error() string { + errs := make([]string, len(m.Errors)) + for i, err := range m.Errors { + errs[i] = err.Error() + } + + return strings.Join(errs, "\n") +} + +type ErrorFormatter interface { + Format(s fmt.State, verb rune) +} + +// ExitCoder is the interface checked by `App` and `Command` for a custom exit +// code +type ExitCoder interface { + error + ExitCode() int +} + +// ExitError fulfills both the builtin `error` interface and `ExitCoder` +type ExitError struct { + exitCode int + message interface{} +} + +// NewExitError makes a new *ExitError +func NewExitError(message interface{}, exitCode int) *ExitError { + return &ExitError{ + exitCode: exitCode, + message: message, + } +} + +// Error returns the string message, fulfilling the interface required by +// `error` +func (ee *ExitError) Error() string { + return fmt.Sprintf("%v", ee.message) +} + +// ExitCode returns the exit code, fulfilling the interface required by +// `ExitCoder` +func (ee *ExitError) ExitCode() int { + return ee.exitCode +} + +// HandleExitCoder checks if the error fulfills the ExitCoder interface, and if +// so prints the error to stderr (if it is non-empty) and calls OsExiter with the +// given exit code. If the given error is a MultiError, then this func is +// called on all members of the Errors slice and calls OsExiter with the last exit code. +func HandleExitCoder(err error) { + if err == nil { + return + } + + if exitErr, ok := err.(ExitCoder); ok { + if err.Error() != "" { + if _, ok := exitErr.(ErrorFormatter); ok { + fmt.Fprintf(ErrWriter, "%+v\n", err) + } else { + fmt.Fprintln(ErrWriter, err) + } + } + OsExiter(exitErr.ExitCode()) + return + } + + if multiErr, ok := err.(MultiError); ok { + code := handleMultiError(multiErr) + OsExiter(code) + return + } +} + +func handleMultiError(multiErr MultiError) int { + code := 1 + for _, merr := range multiErr.Errors { + if multiErr2, ok := merr.(MultiError); ok { + code = handleMultiError(multiErr2) + } else { + fmt.Fprintln(ErrWriter, merr) + if exitErr, ok := merr.(ExitCoder); ok { + code = exitErr.ExitCode() + } + } + } + return code +} diff --git a/vendor/github.com/urfave/cli/flag-types.json b/vendor/github.com/urfave/cli/flag-types.json new file mode 100644 index 0000000..1223107 --- /dev/null +++ b/vendor/github.com/urfave/cli/flag-types.json @@ -0,0 +1,93 @@ +[ + { + "name": "Bool", + "type": "bool", + "value": false, + "context_default": "false", + "parser": "strconv.ParseBool(f.Value.String())" + }, + { + "name": "BoolT", + "type": "bool", + "value": false, + "doctail": " that is true by default", + "context_default": "false", + "parser": "strconv.ParseBool(f.Value.String())" + }, + { + "name": "Duration", + "type": "time.Duration", + "doctail": " (see https://golang.org/pkg/time/#ParseDuration)", + "context_default": "0", + "parser": "time.ParseDuration(f.Value.String())" + }, + { + "name": "Float64", + "type": "float64", + "context_default": "0", + "parser": "strconv.ParseFloat(f.Value.String(), 64)" + }, + { + "name": "Generic", + "type": "Generic", + "dest": false, + "context_default": "nil", + "context_type": "interface{}" + }, + { + "name": "Int64", + "type": "int64", + "context_default": "0", + "parser": "strconv.ParseInt(f.Value.String(), 0, 64)" + }, + { + "name": "Int", + "type": "int", + "context_default": "0", + "parser": "strconv.ParseInt(f.Value.String(), 0, 64)", + "parser_cast": "int(parsed)" + }, + { + "name": "IntSlice", + "type": "*IntSlice", + "dest": false, + "context_default": "nil", + "context_type": "[]int", + "parser": "(f.Value.(*IntSlice)).Value(), error(nil)" + }, + { + "name": "Int64Slice", + "type": "*Int64Slice", + "dest": false, + "context_default": "nil", + "context_type": "[]int64", + "parser": "(f.Value.(*Int64Slice)).Value(), error(nil)" + }, + { + "name": "String", + "type": "string", + "context_default": "\"\"", + "parser": "f.Value.String(), error(nil)" + }, + { + "name": "StringSlice", + "type": "*StringSlice", + "dest": false, + "context_default": "nil", + "context_type": "[]string", + "parser": "(f.Value.(*StringSlice)).Value(), error(nil)" + }, + { + "name": "Uint64", + "type": "uint64", + "context_default": "0", + "parser": "strconv.ParseUint(f.Value.String(), 0, 64)" + }, + { + "name": "Uint", + "type": "uint", + "context_default": "0", + "parser": "strconv.ParseUint(f.Value.String(), 0, 64)", + "parser_cast": "uint(parsed)" + } +] diff --git a/vendor/github.com/urfave/cli/flag.go b/vendor/github.com/urfave/cli/flag.go new file mode 100644 index 0000000..877ff35 --- /dev/null +++ b/vendor/github.com/urfave/cli/flag.go @@ -0,0 +1,799 @@ +package cli + +import ( + "flag" + "fmt" + "reflect" + "runtime" + "strconv" + "strings" + "syscall" + "time" +) + +const defaultPlaceholder = "value" + +// BashCompletionFlag enables bash-completion for all commands and subcommands +var BashCompletionFlag Flag = BoolFlag{ + Name: "generate-bash-completion", + Hidden: true, +} + +// VersionFlag prints the version for the application +var VersionFlag Flag = BoolFlag{ + Name: "version, v", + Usage: "print the version", +} + +// HelpFlag prints the help for all commands and subcommands +// Set to the zero value (BoolFlag{}) to disable flag -- keeps subcommand +// unless HideHelp is set to true) +var HelpFlag Flag = BoolFlag{ + Name: "help, h", + Usage: "show help", +} + +// FlagStringer converts a flag definition to a string. This is used by help +// to display a flag. +var FlagStringer FlagStringFunc = stringifyFlag + +// FlagsByName is a slice of Flag. +type FlagsByName []Flag + +func (f FlagsByName) Len() int { + return len(f) +} + +func (f FlagsByName) Less(i, j int) bool { + return f[i].GetName() < f[j].GetName() +} + +func (f FlagsByName) Swap(i, j int) { + f[i], f[j] = f[j], f[i] +} + +// Flag is a common interface related to parsing flags in cli. +// For more advanced flag parsing techniques, it is recommended that +// this interface be implemented. +type Flag interface { + fmt.Stringer + // Apply Flag settings to the given flag set + Apply(*flag.FlagSet) + GetName() string +} + +// errorableFlag is an interface that allows us to return errors during apply +// it allows flags defined in this library to return errors in a fashion backwards compatible +// TODO remove in v2 and modify the existing Flag interface to return errors +type errorableFlag interface { + Flag + + ApplyWithError(*flag.FlagSet) error +} + +func flagSet(name string, flags []Flag) (*flag.FlagSet, error) { + set := flag.NewFlagSet(name, flag.ContinueOnError) + + for _, f := range flags { + //TODO remove in v2 when errorableFlag is removed + if ef, ok := f.(errorableFlag); ok { + if err := ef.ApplyWithError(set); err != nil { + return nil, err + } + } else { + f.Apply(set) + } + } + return set, nil +} + +func eachName(longName string, fn func(string)) { + parts := strings.Split(longName, ",") + for _, name := range parts { + name = strings.Trim(name, " ") + fn(name) + } +} + +// Generic is a generic parseable type identified by a specific flag +type Generic interface { + Set(value string) error + String() string +} + +// Apply takes the flagset and calls Set on the generic flag with the value +// provided by the user for parsing by the flag +// Ignores parsing errors +func (f GenericFlag) Apply(set *flag.FlagSet) { + f.ApplyWithError(set) +} + +// ApplyWithError takes the flagset and calls Set on the generic flag with the value +// provided by the user for parsing by the flag +func (f GenericFlag) ApplyWithError(set *flag.FlagSet) error { + val := f.Value + if f.EnvVar != "" { + for _, envVar := range strings.Split(f.EnvVar, ",") { + envVar = strings.TrimSpace(envVar) + if envVal, ok := syscall.Getenv(envVar); ok { + if err := val.Set(envVal); err != nil { + return fmt.Errorf("could not parse %s as value for flag %s: %s", envVal, f.Name, err) + } + break + } + } + } + + eachName(f.Name, func(name string) { + set.Var(f.Value, name, f.Usage) + }) + + return nil +} + +// StringSlice is an opaque type for []string to satisfy flag.Value and flag.Getter +type StringSlice []string + +// Set appends the string value to the list of values +func (f *StringSlice) Set(value string) error { + *f = append(*f, value) + return nil +} + +// String returns a readable representation of this value (for usage defaults) +func (f *StringSlice) String() string { + return fmt.Sprintf("%s", *f) +} + +// Value returns the slice of strings set by this flag +func (f *StringSlice) Value() []string { + return *f +} + +// Get returns the slice of strings set by this flag +func (f *StringSlice) Get() interface{} { + return *f +} + +// Apply populates the flag given the flag set and environment +// Ignores errors +func (f StringSliceFlag) Apply(set *flag.FlagSet) { + f.ApplyWithError(set) +} + +// ApplyWithError populates the flag given the flag set and environment +func (f StringSliceFlag) ApplyWithError(set *flag.FlagSet) error { + if f.EnvVar != "" { + for _, envVar := range strings.Split(f.EnvVar, ",") { + envVar = strings.TrimSpace(envVar) + if envVal, ok := syscall.Getenv(envVar); ok { + newVal := &StringSlice{} + for _, s := range strings.Split(envVal, ",") { + s = strings.TrimSpace(s) + if err := newVal.Set(s); err != nil { + return fmt.Errorf("could not parse %s as string value for flag %s: %s", envVal, f.Name, err) + } + } + f.Value = newVal + break + } + } + } + + eachName(f.Name, func(name string) { + if f.Value == nil { + f.Value = &StringSlice{} + } + set.Var(f.Value, name, f.Usage) + }) + + return nil +} + +// IntSlice is an opaque type for []int to satisfy flag.Value and flag.Getter +type IntSlice []int + +// Set parses the value into an integer and appends it to the list of values +func (f *IntSlice) Set(value string) error { + tmp, err := strconv.Atoi(value) + if err != nil { + return err + } + *f = append(*f, tmp) + return nil +} + +// String returns a readable representation of this value (for usage defaults) +func (f *IntSlice) String() string { + return fmt.Sprintf("%#v", *f) +} + +// Value returns the slice of ints set by this flag +func (f *IntSlice) Value() []int { + return *f +} + +// Get returns the slice of ints set by this flag +func (f *IntSlice) Get() interface{} { + return *f +} + +// Apply populates the flag given the flag set and environment +// Ignores errors +func (f IntSliceFlag) Apply(set *flag.FlagSet) { + f.ApplyWithError(set) +} + +// ApplyWithError populates the flag given the flag set and environment +func (f IntSliceFlag) ApplyWithError(set *flag.FlagSet) error { + if f.EnvVar != "" { + for _, envVar := range strings.Split(f.EnvVar, ",") { + envVar = strings.TrimSpace(envVar) + if envVal, ok := syscall.Getenv(envVar); ok { + newVal := &IntSlice{} + for _, s := range strings.Split(envVal, ",") { + s = strings.TrimSpace(s) + if err := newVal.Set(s); err != nil { + return fmt.Errorf("could not parse %s as int slice value for flag %s: %s", envVal, f.Name, err) + } + } + f.Value = newVal + break + } + } + } + + eachName(f.Name, func(name string) { + if f.Value == nil { + f.Value = &IntSlice{} + } + set.Var(f.Value, name, f.Usage) + }) + + return nil +} + +// Int64Slice is an opaque type for []int to satisfy flag.Value and flag.Getter +type Int64Slice []int64 + +// Set parses the value into an integer and appends it to the list of values +func (f *Int64Slice) Set(value string) error { + tmp, err := strconv.ParseInt(value, 10, 64) + if err != nil { + return err + } + *f = append(*f, tmp) + return nil +} + +// String returns a readable representation of this value (for usage defaults) +func (f *Int64Slice) String() string { + return fmt.Sprintf("%#v", *f) +} + +// Value returns the slice of ints set by this flag +func (f *Int64Slice) Value() []int64 { + return *f +} + +// Get returns the slice of ints set by this flag +func (f *Int64Slice) Get() interface{} { + return *f +} + +// Apply populates the flag given the flag set and environment +// Ignores errors +func (f Int64SliceFlag) Apply(set *flag.FlagSet) { + f.ApplyWithError(set) +} + +// ApplyWithError populates the flag given the flag set and environment +func (f Int64SliceFlag) ApplyWithError(set *flag.FlagSet) error { + if f.EnvVar != "" { + for _, envVar := range strings.Split(f.EnvVar, ",") { + envVar = strings.TrimSpace(envVar) + if envVal, ok := syscall.Getenv(envVar); ok { + newVal := &Int64Slice{} + for _, s := range strings.Split(envVal, ",") { + s = strings.TrimSpace(s) + if err := newVal.Set(s); err != nil { + return fmt.Errorf("could not parse %s as int64 slice value for flag %s: %s", envVal, f.Name, err) + } + } + f.Value = newVal + break + } + } + } + + eachName(f.Name, func(name string) { + if f.Value == nil { + f.Value = &Int64Slice{} + } + set.Var(f.Value, name, f.Usage) + }) + return nil +} + +// Apply populates the flag given the flag set and environment +// Ignores errors +func (f BoolFlag) Apply(set *flag.FlagSet) { + f.ApplyWithError(set) +} + +// ApplyWithError populates the flag given the flag set and environment +func (f BoolFlag) ApplyWithError(set *flag.FlagSet) error { + val := false + if f.EnvVar != "" { + for _, envVar := range strings.Split(f.EnvVar, ",") { + envVar = strings.TrimSpace(envVar) + if envVal, ok := syscall.Getenv(envVar); ok { + if envVal == "" { + val = false + break + } + + envValBool, err := strconv.ParseBool(envVal) + if err != nil { + return fmt.Errorf("could not parse %s as bool value for flag %s: %s", envVal, f.Name, err) + } + + val = envValBool + break + } + } + } + + eachName(f.Name, func(name string) { + if f.Destination != nil { + set.BoolVar(f.Destination, name, val, f.Usage) + return + } + set.Bool(name, val, f.Usage) + }) + + return nil +} + +// Apply populates the flag given the flag set and environment +// Ignores errors +func (f BoolTFlag) Apply(set *flag.FlagSet) { + f.ApplyWithError(set) +} + +// ApplyWithError populates the flag given the flag set and environment +func (f BoolTFlag) ApplyWithError(set *flag.FlagSet) error { + val := true + if f.EnvVar != "" { + for _, envVar := range strings.Split(f.EnvVar, ",") { + envVar = strings.TrimSpace(envVar) + if envVal, ok := syscall.Getenv(envVar); ok { + if envVal == "" { + val = false + break + } + + envValBool, err := strconv.ParseBool(envVal) + if err != nil { + return fmt.Errorf("could not parse %s as bool value for flag %s: %s", envVal, f.Name, err) + } + + val = envValBool + break + } + } + } + + eachName(f.Name, func(name string) { + if f.Destination != nil { + set.BoolVar(f.Destination, name, val, f.Usage) + return + } + set.Bool(name, val, f.Usage) + }) + + return nil +} + +// Apply populates the flag given the flag set and environment +// Ignores errors +func (f StringFlag) Apply(set *flag.FlagSet) { + f.ApplyWithError(set) +} + +// ApplyWithError populates the flag given the flag set and environment +func (f StringFlag) ApplyWithError(set *flag.FlagSet) error { + if f.EnvVar != "" { + for _, envVar := range strings.Split(f.EnvVar, ",") { + envVar = strings.TrimSpace(envVar) + if envVal, ok := syscall.Getenv(envVar); ok { + f.Value = envVal + break + } + } + } + + eachName(f.Name, func(name string) { + if f.Destination != nil { + set.StringVar(f.Destination, name, f.Value, f.Usage) + return + } + set.String(name, f.Value, f.Usage) + }) + + return nil +} + +// Apply populates the flag given the flag set and environment +// Ignores errors +func (f IntFlag) Apply(set *flag.FlagSet) { + f.ApplyWithError(set) +} + +// ApplyWithError populates the flag given the flag set and environment +func (f IntFlag) ApplyWithError(set *flag.FlagSet) error { + if f.EnvVar != "" { + for _, envVar := range strings.Split(f.EnvVar, ",") { + envVar = strings.TrimSpace(envVar) + if envVal, ok := syscall.Getenv(envVar); ok { + envValInt, err := strconv.ParseInt(envVal, 0, 64) + if err != nil { + return fmt.Errorf("could not parse %s as int value for flag %s: %s", envVal, f.Name, err) + } + f.Value = int(envValInt) + break + } + } + } + + eachName(f.Name, func(name string) { + if f.Destination != nil { + set.IntVar(f.Destination, name, f.Value, f.Usage) + return + } + set.Int(name, f.Value, f.Usage) + }) + + return nil +} + +// Apply populates the flag given the flag set and environment +// Ignores errors +func (f Int64Flag) Apply(set *flag.FlagSet) { + f.ApplyWithError(set) +} + +// ApplyWithError populates the flag given the flag set and environment +func (f Int64Flag) ApplyWithError(set *flag.FlagSet) error { + if f.EnvVar != "" { + for _, envVar := range strings.Split(f.EnvVar, ",") { + envVar = strings.TrimSpace(envVar) + if envVal, ok := syscall.Getenv(envVar); ok { + envValInt, err := strconv.ParseInt(envVal, 0, 64) + if err != nil { + return fmt.Errorf("could not parse %s as int value for flag %s: %s", envVal, f.Name, err) + } + + f.Value = envValInt + break + } + } + } + + eachName(f.Name, func(name string) { + if f.Destination != nil { + set.Int64Var(f.Destination, name, f.Value, f.Usage) + return + } + set.Int64(name, f.Value, f.Usage) + }) + + return nil +} + +// Apply populates the flag given the flag set and environment +// Ignores errors +func (f UintFlag) Apply(set *flag.FlagSet) { + f.ApplyWithError(set) +} + +// ApplyWithError populates the flag given the flag set and environment +func (f UintFlag) ApplyWithError(set *flag.FlagSet) error { + if f.EnvVar != "" { + for _, envVar := range strings.Split(f.EnvVar, ",") { + envVar = strings.TrimSpace(envVar) + if envVal, ok := syscall.Getenv(envVar); ok { + envValInt, err := strconv.ParseUint(envVal, 0, 64) + if err != nil { + return fmt.Errorf("could not parse %s as uint value for flag %s: %s", envVal, f.Name, err) + } + + f.Value = uint(envValInt) + break + } + } + } + + eachName(f.Name, func(name string) { + if f.Destination != nil { + set.UintVar(f.Destination, name, f.Value, f.Usage) + return + } + set.Uint(name, f.Value, f.Usage) + }) + + return nil +} + +// Apply populates the flag given the flag set and environment +// Ignores errors +func (f Uint64Flag) Apply(set *flag.FlagSet) { + f.ApplyWithError(set) +} + +// ApplyWithError populates the flag given the flag set and environment +func (f Uint64Flag) ApplyWithError(set *flag.FlagSet) error { + if f.EnvVar != "" { + for _, envVar := range strings.Split(f.EnvVar, ",") { + envVar = strings.TrimSpace(envVar) + if envVal, ok := syscall.Getenv(envVar); ok { + envValInt, err := strconv.ParseUint(envVal, 0, 64) + if err != nil { + return fmt.Errorf("could not parse %s as uint64 value for flag %s: %s", envVal, f.Name, err) + } + + f.Value = uint64(envValInt) + break + } + } + } + + eachName(f.Name, func(name string) { + if f.Destination != nil { + set.Uint64Var(f.Destination, name, f.Value, f.Usage) + return + } + set.Uint64(name, f.Value, f.Usage) + }) + + return nil +} + +// Apply populates the flag given the flag set and environment +// Ignores errors +func (f DurationFlag) Apply(set *flag.FlagSet) { + f.ApplyWithError(set) +} + +// ApplyWithError populates the flag given the flag set and environment +func (f DurationFlag) ApplyWithError(set *flag.FlagSet) error { + if f.EnvVar != "" { + for _, envVar := range strings.Split(f.EnvVar, ",") { + envVar = strings.TrimSpace(envVar) + if envVal, ok := syscall.Getenv(envVar); ok { + envValDuration, err := time.ParseDuration(envVal) + if err != nil { + return fmt.Errorf("could not parse %s as duration for flag %s: %s", envVal, f.Name, err) + } + + f.Value = envValDuration + break + } + } + } + + eachName(f.Name, func(name string) { + if f.Destination != nil { + set.DurationVar(f.Destination, name, f.Value, f.Usage) + return + } + set.Duration(name, f.Value, f.Usage) + }) + + return nil +} + +// Apply populates the flag given the flag set and environment +// Ignores errors +func (f Float64Flag) Apply(set *flag.FlagSet) { + f.ApplyWithError(set) +} + +// ApplyWithError populates the flag given the flag set and environment +func (f Float64Flag) ApplyWithError(set *flag.FlagSet) error { + if f.EnvVar != "" { + for _, envVar := range strings.Split(f.EnvVar, ",") { + envVar = strings.TrimSpace(envVar) + if envVal, ok := syscall.Getenv(envVar); ok { + envValFloat, err := strconv.ParseFloat(envVal, 10) + if err != nil { + return fmt.Errorf("could not parse %s as float64 value for flag %s: %s", envVal, f.Name, err) + } + + f.Value = float64(envValFloat) + break + } + } + } + + eachName(f.Name, func(name string) { + if f.Destination != nil { + set.Float64Var(f.Destination, name, f.Value, f.Usage) + return + } + set.Float64(name, f.Value, f.Usage) + }) + + return nil +} + +func visibleFlags(fl []Flag) []Flag { + visible := []Flag{} + for _, flag := range fl { + field := flagValue(flag).FieldByName("Hidden") + if !field.IsValid() || !field.Bool() { + visible = append(visible, flag) + } + } + return visible +} + +func prefixFor(name string) (prefix string) { + if len(name) == 1 { + prefix = "-" + } else { + prefix = "--" + } + + return +} + +// Returns the placeholder, if any, and the unquoted usage string. +func unquoteUsage(usage string) (string, string) { + for i := 0; i < len(usage); i++ { + if usage[i] == '`' { + for j := i + 1; j < len(usage); j++ { + if usage[j] == '`' { + name := usage[i+1 : j] + usage = usage[:i] + name + usage[j+1:] + return name, usage + } + } + break + } + } + return "", usage +} + +func prefixedNames(fullName, placeholder string) string { + var prefixed string + parts := strings.Split(fullName, ",") + for i, name := range parts { + name = strings.Trim(name, " ") + prefixed += prefixFor(name) + name + if placeholder != "" { + prefixed += " " + placeholder + } + if i < len(parts)-1 { + prefixed += ", " + } + } + return prefixed +} + +func withEnvHint(envVar, str string) string { + envText := "" + if envVar != "" { + prefix := "$" + suffix := "" + sep := ", $" + if runtime.GOOS == "windows" { + prefix = "%" + suffix = "%" + sep = "%, %" + } + envText = fmt.Sprintf(" [%s%s%s]", prefix, strings.Join(strings.Split(envVar, ","), sep), suffix) + } + return str + envText +} + +func flagValue(f Flag) reflect.Value { + fv := reflect.ValueOf(f) + for fv.Kind() == reflect.Ptr { + fv = reflect.Indirect(fv) + } + return fv +} + +func stringifyFlag(f Flag) string { + fv := flagValue(f) + + switch f.(type) { + case IntSliceFlag: + return withEnvHint(fv.FieldByName("EnvVar").String(), + stringifyIntSliceFlag(f.(IntSliceFlag))) + case Int64SliceFlag: + return withEnvHint(fv.FieldByName("EnvVar").String(), + stringifyInt64SliceFlag(f.(Int64SliceFlag))) + case StringSliceFlag: + return withEnvHint(fv.FieldByName("EnvVar").String(), + stringifyStringSliceFlag(f.(StringSliceFlag))) + } + + placeholder, usage := unquoteUsage(fv.FieldByName("Usage").String()) + + needsPlaceholder := false + defaultValueString := "" + + if val := fv.FieldByName("Value"); val.IsValid() { + needsPlaceholder = true + defaultValueString = fmt.Sprintf(" (default: %v)", val.Interface()) + + if val.Kind() == reflect.String && val.String() != "" { + defaultValueString = fmt.Sprintf(" (default: %q)", val.String()) + } + } + + if defaultValueString == " (default: )" { + defaultValueString = "" + } + + if needsPlaceholder && placeholder == "" { + placeholder = defaultPlaceholder + } + + usageWithDefault := strings.TrimSpace(fmt.Sprintf("%s%s", usage, defaultValueString)) + + return withEnvHint(fv.FieldByName("EnvVar").String(), + fmt.Sprintf("%s\t%s", prefixedNames(fv.FieldByName("Name").String(), placeholder), usageWithDefault)) +} + +func stringifyIntSliceFlag(f IntSliceFlag) string { + defaultVals := []string{} + if f.Value != nil && len(f.Value.Value()) > 0 { + for _, i := range f.Value.Value() { + defaultVals = append(defaultVals, fmt.Sprintf("%d", i)) + } + } + + return stringifySliceFlag(f.Usage, f.Name, defaultVals) +} + +func stringifyInt64SliceFlag(f Int64SliceFlag) string { + defaultVals := []string{} + if f.Value != nil && len(f.Value.Value()) > 0 { + for _, i := range f.Value.Value() { + defaultVals = append(defaultVals, fmt.Sprintf("%d", i)) + } + } + + return stringifySliceFlag(f.Usage, f.Name, defaultVals) +} + +func stringifyStringSliceFlag(f StringSliceFlag) string { + defaultVals := []string{} + if f.Value != nil && len(f.Value.Value()) > 0 { + for _, s := range f.Value.Value() { + if len(s) > 0 { + defaultVals = append(defaultVals, fmt.Sprintf("%q", s)) + } + } + } + + return stringifySliceFlag(f.Usage, f.Name, defaultVals) +} + +func stringifySliceFlag(usage, name string, defaultVals []string) string { + placeholder, usage := unquoteUsage(usage) + if placeholder == "" { + placeholder = defaultPlaceholder + } + + defaultVal := "" + if len(defaultVals) > 0 { + defaultVal = fmt.Sprintf(" (default: %s)", strings.Join(defaultVals, ", ")) + } + + usageWithDefault := strings.TrimSpace(fmt.Sprintf("%s%s", usage, defaultVal)) + return fmt.Sprintf("%s\t%s", prefixedNames(name, placeholder), usageWithDefault) +} diff --git a/vendor/github.com/urfave/cli/flag_generated.go b/vendor/github.com/urfave/cli/flag_generated.go new file mode 100644 index 0000000..491b619 --- /dev/null +++ b/vendor/github.com/urfave/cli/flag_generated.go @@ -0,0 +1,627 @@ +package cli + +import ( + "flag" + "strconv" + "time" +) + +// WARNING: This file is generated! + +// BoolFlag is a flag with type bool +type BoolFlag struct { + Name string + Usage string + EnvVar string + Hidden bool + Destination *bool +} + +// String returns a readable representation of this value +// (for usage defaults) +func (f BoolFlag) String() string { + return FlagStringer(f) +} + +// GetName returns the name of the flag +func (f BoolFlag) GetName() string { + return f.Name +} + +// Bool looks up the value of a local BoolFlag, returns +// false if not found +func (c *Context) Bool(name string) bool { + return lookupBool(name, c.flagSet) +} + +// GlobalBool looks up the value of a global BoolFlag, returns +// false if not found +func (c *Context) GlobalBool(name string) bool { + if fs := lookupGlobalFlagSet(name, c); fs != nil { + return lookupBool(name, fs) + } + return false +} + +func lookupBool(name string, set *flag.FlagSet) bool { + f := set.Lookup(name) + if f != nil { + parsed, err := strconv.ParseBool(f.Value.String()) + if err != nil { + return false + } + return parsed + } + return false +} + +// BoolTFlag is a flag with type bool that is true by default +type BoolTFlag struct { + Name string + Usage string + EnvVar string + Hidden bool + Destination *bool +} + +// String returns a readable representation of this value +// (for usage defaults) +func (f BoolTFlag) String() string { + return FlagStringer(f) +} + +// GetName returns the name of the flag +func (f BoolTFlag) GetName() string { + return f.Name +} + +// BoolT looks up the value of a local BoolTFlag, returns +// false if not found +func (c *Context) BoolT(name string) bool { + return lookupBoolT(name, c.flagSet) +} + +// GlobalBoolT looks up the value of a global BoolTFlag, returns +// false if not found +func (c *Context) GlobalBoolT(name string) bool { + if fs := lookupGlobalFlagSet(name, c); fs != nil { + return lookupBoolT(name, fs) + } + return false +} + +func lookupBoolT(name string, set *flag.FlagSet) bool { + f := set.Lookup(name) + if f != nil { + parsed, err := strconv.ParseBool(f.Value.String()) + if err != nil { + return false + } + return parsed + } + return false +} + +// DurationFlag is a flag with type time.Duration (see https://golang.org/pkg/time/#ParseDuration) +type DurationFlag struct { + Name string + Usage string + EnvVar string + Hidden bool + Value time.Duration + Destination *time.Duration +} + +// String returns a readable representation of this value +// (for usage defaults) +func (f DurationFlag) String() string { + return FlagStringer(f) +} + +// GetName returns the name of the flag +func (f DurationFlag) GetName() string { + return f.Name +} + +// Duration looks up the value of a local DurationFlag, returns +// 0 if not found +func (c *Context) Duration(name string) time.Duration { + return lookupDuration(name, c.flagSet) +} + +// GlobalDuration looks up the value of a global DurationFlag, returns +// 0 if not found +func (c *Context) GlobalDuration(name string) time.Duration { + if fs := lookupGlobalFlagSet(name, c); fs != nil { + return lookupDuration(name, fs) + } + return 0 +} + +func lookupDuration(name string, set *flag.FlagSet) time.Duration { + f := set.Lookup(name) + if f != nil { + parsed, err := time.ParseDuration(f.Value.String()) + if err != nil { + return 0 + } + return parsed + } + return 0 +} + +// Float64Flag is a flag with type float64 +type Float64Flag struct { + Name string + Usage string + EnvVar string + Hidden bool + Value float64 + Destination *float64 +} + +// String returns a readable representation of this value +// (for usage defaults) +func (f Float64Flag) String() string { + return FlagStringer(f) +} + +// GetName returns the name of the flag +func (f Float64Flag) GetName() string { + return f.Name +} + +// Float64 looks up the value of a local Float64Flag, returns +// 0 if not found +func (c *Context) Float64(name string) float64 { + return lookupFloat64(name, c.flagSet) +} + +// GlobalFloat64 looks up the value of a global Float64Flag, returns +// 0 if not found +func (c *Context) GlobalFloat64(name string) float64 { + if fs := lookupGlobalFlagSet(name, c); fs != nil { + return lookupFloat64(name, fs) + } + return 0 +} + +func lookupFloat64(name string, set *flag.FlagSet) float64 { + f := set.Lookup(name) + if f != nil { + parsed, err := strconv.ParseFloat(f.Value.String(), 64) + if err != nil { + return 0 + } + return parsed + } + return 0 +} + +// GenericFlag is a flag with type Generic +type GenericFlag struct { + Name string + Usage string + EnvVar string + Hidden bool + Value Generic +} + +// String returns a readable representation of this value +// (for usage defaults) +func (f GenericFlag) String() string { + return FlagStringer(f) +} + +// GetName returns the name of the flag +func (f GenericFlag) GetName() string { + return f.Name +} + +// Generic looks up the value of a local GenericFlag, returns +// nil if not found +func (c *Context) Generic(name string) interface{} { + return lookupGeneric(name, c.flagSet) +} + +// GlobalGeneric looks up the value of a global GenericFlag, returns +// nil if not found +func (c *Context) GlobalGeneric(name string) interface{} { + if fs := lookupGlobalFlagSet(name, c); fs != nil { + return lookupGeneric(name, fs) + } + return nil +} + +func lookupGeneric(name string, set *flag.FlagSet) interface{} { + f := set.Lookup(name) + if f != nil { + parsed, err := f.Value, error(nil) + if err != nil { + return nil + } + return parsed + } + return nil +} + +// Int64Flag is a flag with type int64 +type Int64Flag struct { + Name string + Usage string + EnvVar string + Hidden bool + Value int64 + Destination *int64 +} + +// String returns a readable representation of this value +// (for usage defaults) +func (f Int64Flag) String() string { + return FlagStringer(f) +} + +// GetName returns the name of the flag +func (f Int64Flag) GetName() string { + return f.Name +} + +// Int64 looks up the value of a local Int64Flag, returns +// 0 if not found +func (c *Context) Int64(name string) int64 { + return lookupInt64(name, c.flagSet) +} + +// GlobalInt64 looks up the value of a global Int64Flag, returns +// 0 if not found +func (c *Context) GlobalInt64(name string) int64 { + if fs := lookupGlobalFlagSet(name, c); fs != nil { + return lookupInt64(name, fs) + } + return 0 +} + +func lookupInt64(name string, set *flag.FlagSet) int64 { + f := set.Lookup(name) + if f != nil { + parsed, err := strconv.ParseInt(f.Value.String(), 0, 64) + if err != nil { + return 0 + } + return parsed + } + return 0 +} + +// IntFlag is a flag with type int +type IntFlag struct { + Name string + Usage string + EnvVar string + Hidden bool + Value int + Destination *int +} + +// String returns a readable representation of this value +// (for usage defaults) +func (f IntFlag) String() string { + return FlagStringer(f) +} + +// GetName returns the name of the flag +func (f IntFlag) GetName() string { + return f.Name +} + +// Int looks up the value of a local IntFlag, returns +// 0 if not found +func (c *Context) Int(name string) int { + return lookupInt(name, c.flagSet) +} + +// GlobalInt looks up the value of a global IntFlag, returns +// 0 if not found +func (c *Context) GlobalInt(name string) int { + if fs := lookupGlobalFlagSet(name, c); fs != nil { + return lookupInt(name, fs) + } + return 0 +} + +func lookupInt(name string, set *flag.FlagSet) int { + f := set.Lookup(name) + if f != nil { + parsed, err := strconv.ParseInt(f.Value.String(), 0, 64) + if err != nil { + return 0 + } + return int(parsed) + } + return 0 +} + +// IntSliceFlag is a flag with type *IntSlice +type IntSliceFlag struct { + Name string + Usage string + EnvVar string + Hidden bool + Value *IntSlice +} + +// String returns a readable representation of this value +// (for usage defaults) +func (f IntSliceFlag) String() string { + return FlagStringer(f) +} + +// GetName returns the name of the flag +func (f IntSliceFlag) GetName() string { + return f.Name +} + +// IntSlice looks up the value of a local IntSliceFlag, returns +// nil if not found +func (c *Context) IntSlice(name string) []int { + return lookupIntSlice(name, c.flagSet) +} + +// GlobalIntSlice looks up the value of a global IntSliceFlag, returns +// nil if not found +func (c *Context) GlobalIntSlice(name string) []int { + if fs := lookupGlobalFlagSet(name, c); fs != nil { + return lookupIntSlice(name, fs) + } + return nil +} + +func lookupIntSlice(name string, set *flag.FlagSet) []int { + f := set.Lookup(name) + if f != nil { + parsed, err := (f.Value.(*IntSlice)).Value(), error(nil) + if err != nil { + return nil + } + return parsed + } + return nil +} + +// Int64SliceFlag is a flag with type *Int64Slice +type Int64SliceFlag struct { + Name string + Usage string + EnvVar string + Hidden bool + Value *Int64Slice +} + +// String returns a readable representation of this value +// (for usage defaults) +func (f Int64SliceFlag) String() string { + return FlagStringer(f) +} + +// GetName returns the name of the flag +func (f Int64SliceFlag) GetName() string { + return f.Name +} + +// Int64Slice looks up the value of a local Int64SliceFlag, returns +// nil if not found +func (c *Context) Int64Slice(name string) []int64 { + return lookupInt64Slice(name, c.flagSet) +} + +// GlobalInt64Slice looks up the value of a global Int64SliceFlag, returns +// nil if not found +func (c *Context) GlobalInt64Slice(name string) []int64 { + if fs := lookupGlobalFlagSet(name, c); fs != nil { + return lookupInt64Slice(name, fs) + } + return nil +} + +func lookupInt64Slice(name string, set *flag.FlagSet) []int64 { + f := set.Lookup(name) + if f != nil { + parsed, err := (f.Value.(*Int64Slice)).Value(), error(nil) + if err != nil { + return nil + } + return parsed + } + return nil +} + +// StringFlag is a flag with type string +type StringFlag struct { + Name string + Usage string + EnvVar string + Hidden bool + Value string + Destination *string +} + +// String returns a readable representation of this value +// (for usage defaults) +func (f StringFlag) String() string { + return FlagStringer(f) +} + +// GetName returns the name of the flag +func (f StringFlag) GetName() string { + return f.Name +} + +// String looks up the value of a local StringFlag, returns +// "" if not found +func (c *Context) String(name string) string { + return lookupString(name, c.flagSet) +} + +// GlobalString looks up the value of a global StringFlag, returns +// "" if not found +func (c *Context) GlobalString(name string) string { + if fs := lookupGlobalFlagSet(name, c); fs != nil { + return lookupString(name, fs) + } + return "" +} + +func lookupString(name string, set *flag.FlagSet) string { + f := set.Lookup(name) + if f != nil { + parsed, err := f.Value.String(), error(nil) + if err != nil { + return "" + } + return parsed + } + return "" +} + +// StringSliceFlag is a flag with type *StringSlice +type StringSliceFlag struct { + Name string + Usage string + EnvVar string + Hidden bool + Value *StringSlice +} + +// String returns a readable representation of this value +// (for usage defaults) +func (f StringSliceFlag) String() string { + return FlagStringer(f) +} + +// GetName returns the name of the flag +func (f StringSliceFlag) GetName() string { + return f.Name +} + +// StringSlice looks up the value of a local StringSliceFlag, returns +// nil if not found +func (c *Context) StringSlice(name string) []string { + return lookupStringSlice(name, c.flagSet) +} + +// GlobalStringSlice looks up the value of a global StringSliceFlag, returns +// nil if not found +func (c *Context) GlobalStringSlice(name string) []string { + if fs := lookupGlobalFlagSet(name, c); fs != nil { + return lookupStringSlice(name, fs) + } + return nil +} + +func lookupStringSlice(name string, set *flag.FlagSet) []string { + f := set.Lookup(name) + if f != nil { + parsed, err := (f.Value.(*StringSlice)).Value(), error(nil) + if err != nil { + return nil + } + return parsed + } + return nil +} + +// Uint64Flag is a flag with type uint64 +type Uint64Flag struct { + Name string + Usage string + EnvVar string + Hidden bool + Value uint64 + Destination *uint64 +} + +// String returns a readable representation of this value +// (for usage defaults) +func (f Uint64Flag) String() string { + return FlagStringer(f) +} + +// GetName returns the name of the flag +func (f Uint64Flag) GetName() string { + return f.Name +} + +// Uint64 looks up the value of a local Uint64Flag, returns +// 0 if not found +func (c *Context) Uint64(name string) uint64 { + return lookupUint64(name, c.flagSet) +} + +// GlobalUint64 looks up the value of a global Uint64Flag, returns +// 0 if not found +func (c *Context) GlobalUint64(name string) uint64 { + if fs := lookupGlobalFlagSet(name, c); fs != nil { + return lookupUint64(name, fs) + } + return 0 +} + +func lookupUint64(name string, set *flag.FlagSet) uint64 { + f := set.Lookup(name) + if f != nil { + parsed, err := strconv.ParseUint(f.Value.String(), 0, 64) + if err != nil { + return 0 + } + return parsed + } + return 0 +} + +// UintFlag is a flag with type uint +type UintFlag struct { + Name string + Usage string + EnvVar string + Hidden bool + Value uint + Destination *uint +} + +// String returns a readable representation of this value +// (for usage defaults) +func (f UintFlag) String() string { + return FlagStringer(f) +} + +// GetName returns the name of the flag +func (f UintFlag) GetName() string { + return f.Name +} + +// Uint looks up the value of a local UintFlag, returns +// 0 if not found +func (c *Context) Uint(name string) uint { + return lookupUint(name, c.flagSet) +} + +// GlobalUint looks up the value of a global UintFlag, returns +// 0 if not found +func (c *Context) GlobalUint(name string) uint { + if fs := lookupGlobalFlagSet(name, c); fs != nil { + return lookupUint(name, fs) + } + return 0 +} + +func lookupUint(name string, set *flag.FlagSet) uint { + f := set.Lookup(name) + if f != nil { + parsed, err := strconv.ParseUint(f.Value.String(), 0, 64) + if err != nil { + return 0 + } + return uint(parsed) + } + return 0 +} diff --git a/vendor/github.com/urfave/cli/funcs.go b/vendor/github.com/urfave/cli/funcs.go new file mode 100644 index 0000000..cba5e6c --- /dev/null +++ b/vendor/github.com/urfave/cli/funcs.go @@ -0,0 +1,28 @@ +package cli + +// BashCompleteFunc is an action to execute when the bash-completion flag is set +type BashCompleteFunc func(*Context) + +// BeforeFunc is an action to execute before any subcommands are run, but after +// the context is ready if a non-nil error is returned, no subcommands are run +type BeforeFunc func(*Context) error + +// AfterFunc is an action to execute after any subcommands are run, but after the +// subcommand has finished it is run even if Action() panics +type AfterFunc func(*Context) error + +// ActionFunc is the action to execute when no subcommands are specified +type ActionFunc func(*Context) error + +// CommandNotFoundFunc is executed if the proper command cannot be found +type CommandNotFoundFunc func(*Context, string) + +// OnUsageErrorFunc is executed if an usage error occurs. This is useful for displaying +// customized usage error messages. This function is able to replace the +// original error messages. If this function is not set, the "Incorrect usage" +// is displayed and the execution is interrupted. +type OnUsageErrorFunc func(context *Context, err error, isSubcommand bool) error + +// FlagStringFunc is used by the help generation to display a flag, which is +// expected to be a single line. +type FlagStringFunc func(Flag) string diff --git a/vendor/github.com/urfave/cli/generate-flag-types b/vendor/github.com/urfave/cli/generate-flag-types new file mode 100755 index 0000000..7147381 --- /dev/null +++ b/vendor/github.com/urfave/cli/generate-flag-types @@ -0,0 +1,255 @@ +#!/usr/bin/env python +""" +The flag types that ship with the cli library have many things in common, and +so we can take advantage of the `go generate` command to create much of the +source code from a list of definitions. These definitions attempt to cover +the parts that vary between flag types, and should evolve as needed. + +An example of the minimum definition needed is: + + { + "name": "SomeType", + "type": "sometype", + "context_default": "nil" + } + +In this example, the code generated for the `cli` package will include a type +named `SomeTypeFlag` that is expected to wrap a value of type `sometype`. +Fetching values by name via `*cli.Context` will default to a value of `nil`. + +A more complete, albeit somewhat redundant, example showing all available +definition keys is: + + { + "name": "VeryMuchType", + "type": "*VeryMuchType", + "value": true, + "dest": false, + "doctail": " which really only wraps a []float64, oh well!", + "context_type": "[]float64", + "context_default": "nil", + "parser": "parseVeryMuchType(f.Value.String())", + "parser_cast": "[]float64(parsed)" + } + +The meaning of each field is as follows: + + name (string) - The type "name", which will be suffixed with + `Flag` when generating the type definition + for `cli` and the wrapper type for `altsrc` + type (string) - The type that the generated `Flag` type for `cli` + is expected to "contain" as its `.Value` member + value (bool) - Should the generated `cli` type have a `Value` + member? + dest (bool) - Should the generated `cli` type support a + destination pointer? + doctail (string) - Additional docs for the `cli` flag type comment + context_type (string) - The literal type used in the `*cli.Context` + reader func signature + context_default (string) - The literal value used as the default by the + `*cli.Context` reader funcs when no value is + present + parser (string) - Literal code used to parse the flag `f`, + expected to have a return signature of + (value, error) + parser_cast (string) - Literal code used to cast the `parsed` value + returned from the `parser` code +""" + +from __future__ import print_function, unicode_literals + +import argparse +import json +import os +import subprocess +import sys +import tempfile +import textwrap + + +class _FancyFormatter(argparse.ArgumentDefaultsHelpFormatter, + argparse.RawDescriptionHelpFormatter): + pass + + +def main(sysargs=sys.argv[:]): + parser = argparse.ArgumentParser( + description='Generate flag type code!', + formatter_class=_FancyFormatter) + parser.add_argument( + 'package', + type=str, default='cli', choices=_WRITEFUNCS.keys(), + help='Package for which flag types will be generated' + ) + parser.add_argument( + '-i', '--in-json', + type=argparse.FileType('r'), + default=sys.stdin, + help='Input JSON file which defines each type to be generated' + ) + parser.add_argument( + '-o', '--out-go', + type=argparse.FileType('w'), + default=sys.stdout, + help='Output file/stream to which generated source will be written' + ) + parser.epilog = __doc__ + + args = parser.parse_args(sysargs[1:]) + _generate_flag_types(_WRITEFUNCS[args.package], args.out_go, args.in_json) + return 0 + + +def _generate_flag_types(writefunc, output_go, input_json): + types = json.load(input_json) + + tmp = tempfile.NamedTemporaryFile(suffix='.go', delete=False) + writefunc(tmp, types) + tmp.close() + + new_content = subprocess.check_output( + ['goimports', tmp.name] + ).decode('utf-8') + + print(new_content, file=output_go, end='') + output_go.flush() + os.remove(tmp.name) + + +def _set_typedef_defaults(typedef): + typedef.setdefault('doctail', '') + typedef.setdefault('context_type', typedef['type']) + typedef.setdefault('dest', True) + typedef.setdefault('value', True) + typedef.setdefault('parser', 'f.Value, error(nil)') + typedef.setdefault('parser_cast', 'parsed') + + +def _write_cli_flag_types(outfile, types): + _fwrite(outfile, """\ + package cli + + // WARNING: This file is generated! + + """) + + for typedef in types: + _set_typedef_defaults(typedef) + + _fwrite(outfile, """\ + // {name}Flag is a flag with type {type}{doctail} + type {name}Flag struct {{ + Name string + Usage string + EnvVar string + Hidden bool + """.format(**typedef)) + + if typedef['value']: + _fwrite(outfile, """\ + Value {type} + """.format(**typedef)) + + if typedef['dest']: + _fwrite(outfile, """\ + Destination *{type} + """.format(**typedef)) + + _fwrite(outfile, "\n}\n\n") + + _fwrite(outfile, """\ + // String returns a readable representation of this value + // (for usage defaults) + func (f {name}Flag) String() string {{ + return FlagStringer(f) + }} + + // GetName returns the name of the flag + func (f {name}Flag) GetName() string {{ + return f.Name + }} + + // {name} looks up the value of a local {name}Flag, returns + // {context_default} if not found + func (c *Context) {name}(name string) {context_type} {{ + return lookup{name}(name, c.flagSet) + }} + + // Global{name} looks up the value of a global {name}Flag, returns + // {context_default} if not found + func (c *Context) Global{name}(name string) {context_type} {{ + if fs := lookupGlobalFlagSet(name, c); fs != nil {{ + return lookup{name}(name, fs) + }} + return {context_default} + }} + + func lookup{name}(name string, set *flag.FlagSet) {context_type} {{ + f := set.Lookup(name) + if f != nil {{ + parsed, err := {parser} + if err != nil {{ + return {context_default} + }} + return {parser_cast} + }} + return {context_default} + }} + """.format(**typedef)) + + +def _write_altsrc_flag_types(outfile, types): + _fwrite(outfile, """\ + package altsrc + + import ( + "gopkg.in/urfave/cli.v1" + ) + + // WARNING: This file is generated! + + """) + + for typedef in types: + _set_typedef_defaults(typedef) + + _fwrite(outfile, """\ + // {name}Flag is the flag type that wraps cli.{name}Flag to allow + // for other values to be specified + type {name}Flag struct {{ + cli.{name}Flag + set *flag.FlagSet + }} + + // New{name}Flag creates a new {name}Flag + func New{name}Flag(fl cli.{name}Flag) *{name}Flag {{ + return &{name}Flag{{{name}Flag: fl, set: nil}} + }} + + // Apply saves the flagSet for later usage calls, then calls the + // wrapped {name}Flag.Apply + func (f *{name}Flag) Apply(set *flag.FlagSet) {{ + f.set = set + f.{name}Flag.Apply(set) + }} + + // ApplyWithError saves the flagSet for later usage calls, then calls the + // wrapped {name}Flag.ApplyWithError + func (f *{name}Flag) ApplyWithError(set *flag.FlagSet) error {{ + f.set = set + return f.{name}Flag.ApplyWithError(set) + }} + """.format(**typedef)) + + +def _fwrite(outfile, text): + print(textwrap.dedent(text), end='', file=outfile) + + +_WRITEFUNCS = { + 'cli': _write_cli_flag_types, + 'altsrc': _write_altsrc_flag_types +} + +if __name__ == '__main__': + sys.exit(main()) diff --git a/vendor/github.com/urfave/cli/help.go b/vendor/github.com/urfave/cli/help.go new file mode 100644 index 0000000..57ec98d --- /dev/null +++ b/vendor/github.com/urfave/cli/help.go @@ -0,0 +1,338 @@ +package cli + +import ( + "fmt" + "io" + "os" + "strings" + "text/tabwriter" + "text/template" +) + +// AppHelpTemplate is the text template for the Default help topic. +// cli.go uses text/template to render templates. You can +// render custom help text by setting this variable. +var AppHelpTemplate = `NAME: + {{.Name}}{{if .Usage}} - {{.Usage}}{{end}} + +USAGE: + {{if .UsageText}}{{.UsageText}}{{else}}{{.HelpName}} {{if .VisibleFlags}}[global options]{{end}}{{if .Commands}} command [command options]{{end}} {{if .ArgsUsage}}{{.ArgsUsage}}{{else}}[arguments...]{{end}}{{end}}{{if .Version}}{{if not .HideVersion}} + +VERSION: + {{.Version}}{{end}}{{end}}{{if .Description}} + +DESCRIPTION: + {{.Description}}{{end}}{{if len .Authors}} + +AUTHOR{{with $length := len .Authors}}{{if ne 1 $length}}S{{end}}{{end}}: + {{range $index, $author := .Authors}}{{if $index}} + {{end}}{{$author}}{{end}}{{end}}{{if .VisibleCommands}} + +COMMANDS:{{range .VisibleCategories}}{{if .Name}} + {{.Name}}:{{end}}{{range .VisibleCommands}} + {{join .Names ", "}}{{"\t"}}{{.Usage}}{{end}}{{end}}{{end}}{{if .VisibleFlags}} + +GLOBAL OPTIONS: + {{range $index, $option := .VisibleFlags}}{{if $index}} + {{end}}{{$option}}{{end}}{{end}}{{if .Copyright}} + +COPYRIGHT: + {{.Copyright}}{{end}} +` + +// CommandHelpTemplate is the text template for the command help topic. +// cli.go uses text/template to render templates. You can +// render custom help text by setting this variable. +var CommandHelpTemplate = `NAME: + {{.HelpName}} - {{.Usage}} + +USAGE: + {{if .UsageText}}{{.UsageText}}{{else}}{{.HelpName}}{{if .VisibleFlags}} [command options]{{end}} {{if .ArgsUsage}}{{.ArgsUsage}}{{else}}[arguments...]{{end}}{{end}}{{if .Category}} + +CATEGORY: + {{.Category}}{{end}}{{if .Description}} + +DESCRIPTION: + {{.Description}}{{end}}{{if .VisibleFlags}} + +OPTIONS: + {{range .VisibleFlags}}{{.}} + {{end}}{{end}} +` + +// SubcommandHelpTemplate is the text template for the subcommand help topic. +// cli.go uses text/template to render templates. You can +// render custom help text by setting this variable. +var SubcommandHelpTemplate = `NAME: + {{.HelpName}} - {{if .Description}}{{.Description}}{{else}}{{.Usage}}{{end}} + +USAGE: + {{if .UsageText}}{{.UsageText}}{{else}}{{.HelpName}} command{{if .VisibleFlags}} [command options]{{end}} {{if .ArgsUsage}}{{.ArgsUsage}}{{else}}[arguments...]{{end}}{{end}} + +COMMANDS:{{range .VisibleCategories}}{{if .Name}} + {{.Name}}:{{end}}{{range .VisibleCommands}} + {{join .Names ", "}}{{"\t"}}{{.Usage}}{{end}} +{{end}}{{if .VisibleFlags}} +OPTIONS: + {{range .VisibleFlags}}{{.}} + {{end}}{{end}} +` + +var helpCommand = Command{ + Name: "help", + Aliases: []string{"h"}, + Usage: "Shows a list of commands or help for one command", + ArgsUsage: "[command]", + Action: func(c *Context) error { + args := c.Args() + if args.Present() { + return ShowCommandHelp(c, args.First()) + } + + ShowAppHelp(c) + return nil + }, +} + +var helpSubcommand = Command{ + Name: "help", + Aliases: []string{"h"}, + Usage: "Shows a list of commands or help for one command", + ArgsUsage: "[command]", + Action: func(c *Context) error { + args := c.Args() + if args.Present() { + return ShowCommandHelp(c, args.First()) + } + + return ShowSubcommandHelp(c) + }, +} + +// Prints help for the App or Command +type helpPrinter func(w io.Writer, templ string, data interface{}) + +// Prints help for the App or Command with custom template function. +type helpPrinterCustom func(w io.Writer, templ string, data interface{}, customFunc map[string]interface{}) + +// HelpPrinter is a function that writes the help output. If not set a default +// is used. The function signature is: +// func(w io.Writer, templ string, data interface{}) +var HelpPrinter helpPrinter = printHelp + +// HelpPrinterCustom is same as HelpPrinter but +// takes a custom function for template function map. +var HelpPrinterCustom helpPrinterCustom = printHelpCustom + +// VersionPrinter prints the version for the App +var VersionPrinter = printVersion + +// ShowAppHelpAndExit - Prints the list of subcommands for the app and exits with exit code. +func ShowAppHelpAndExit(c *Context, exitCode int) { + ShowAppHelp(c) + os.Exit(exitCode) +} + +// ShowAppHelp is an action that displays the help. +func ShowAppHelp(c *Context) (err error) { + if c.App.CustomAppHelpTemplate == "" { + HelpPrinter(c.App.Writer, AppHelpTemplate, c.App) + return + } + customAppData := func() map[string]interface{} { + if c.App.ExtraInfo == nil { + return nil + } + return map[string]interface{}{ + "ExtraInfo": c.App.ExtraInfo, + } + } + HelpPrinterCustom(c.App.Writer, c.App.CustomAppHelpTemplate, c.App, customAppData()) + return nil +} + +// DefaultAppComplete prints the list of subcommands as the default app completion method +func DefaultAppComplete(c *Context) { + for _, command := range c.App.Commands { + if command.Hidden { + continue + } + for _, name := range command.Names() { + fmt.Fprintln(c.App.Writer, name) + } + } +} + +// ShowCommandHelpAndExit - exits with code after showing help +func ShowCommandHelpAndExit(c *Context, command string, code int) { + ShowCommandHelp(c, command) + os.Exit(code) +} + +// ShowCommandHelp prints help for the given command +func ShowCommandHelp(ctx *Context, command string) error { + // show the subcommand help for a command with subcommands + if command == "" { + HelpPrinter(ctx.App.Writer, SubcommandHelpTemplate, ctx.App) + return nil + } + + for _, c := range ctx.App.Commands { + if c.HasName(command) { + if c.CustomHelpTemplate != "" { + HelpPrinterCustom(ctx.App.Writer, c.CustomHelpTemplate, c, nil) + } else { + HelpPrinter(ctx.App.Writer, CommandHelpTemplate, c) + } + return nil + } + } + + if ctx.App.CommandNotFound == nil { + return NewExitError(fmt.Sprintf("No help topic for '%v'", command), 3) + } + + ctx.App.CommandNotFound(ctx, command) + return nil +} + +// ShowSubcommandHelp prints help for the given subcommand +func ShowSubcommandHelp(c *Context) error { + return ShowCommandHelp(c, c.Command.Name) +} + +// ShowVersion prints the version number of the App +func ShowVersion(c *Context) { + VersionPrinter(c) +} + +func printVersion(c *Context) { + fmt.Fprintf(c.App.Writer, "%v version %v\n", c.App.Name, c.App.Version) +} + +// ShowCompletions prints the lists of commands within a given context +func ShowCompletions(c *Context) { + a := c.App + if a != nil && a.BashComplete != nil { + a.BashComplete(c) + } +} + +// ShowCommandCompletions prints the custom completions for a given command +func ShowCommandCompletions(ctx *Context, command string) { + c := ctx.App.Command(command) + if c != nil && c.BashComplete != nil { + c.BashComplete(ctx) + } +} + +func printHelpCustom(out io.Writer, templ string, data interface{}, customFunc map[string]interface{}) { + funcMap := template.FuncMap{ + "join": strings.Join, + } + if customFunc != nil { + for key, value := range customFunc { + funcMap[key] = value + } + } + + w := tabwriter.NewWriter(out, 1, 8, 2, ' ', 0) + t := template.Must(template.New("help").Funcs(funcMap).Parse(templ)) + err := t.Execute(w, data) + if err != nil { + // If the writer is closed, t.Execute will fail, and there's nothing + // we can do to recover. + if os.Getenv("CLI_TEMPLATE_ERROR_DEBUG") != "" { + fmt.Fprintf(ErrWriter, "CLI TEMPLATE ERROR: %#v\n", err) + } + return + } + w.Flush() +} + +func printHelp(out io.Writer, templ string, data interface{}) { + printHelpCustom(out, templ, data, nil) +} + +func checkVersion(c *Context) bool { + found := false + if VersionFlag.GetName() != "" { + eachName(VersionFlag.GetName(), func(name string) { + if c.GlobalBool(name) || c.Bool(name) { + found = true + } + }) + } + return found +} + +func checkHelp(c *Context) bool { + found := false + if HelpFlag.GetName() != "" { + eachName(HelpFlag.GetName(), func(name string) { + if c.GlobalBool(name) || c.Bool(name) { + found = true + } + }) + } + return found +} + +func checkCommandHelp(c *Context, name string) bool { + if c.Bool("h") || c.Bool("help") { + ShowCommandHelp(c, name) + return true + } + + return false +} + +func checkSubcommandHelp(c *Context) bool { + if c.Bool("h") || c.Bool("help") { + ShowSubcommandHelp(c) + return true + } + + return false +} + +func checkShellCompleteFlag(a *App, arguments []string) (bool, []string) { + if !a.EnableBashCompletion { + return false, arguments + } + + pos := len(arguments) - 1 + lastArg := arguments[pos] + + if lastArg != "--"+BashCompletionFlag.GetName() { + return false, arguments + } + + return true, arguments[:pos] +} + +func checkCompletions(c *Context) bool { + if !c.shellComplete { + return false + } + + if args := c.Args(); args.Present() { + name := args.First() + if cmd := c.App.Command(name); cmd != nil { + // let the command handle the completion + return false + } + } + + ShowCompletions(c) + return true +} + +func checkCommandCompletions(c *Context, name string) bool { + if !c.shellComplete { + return false + } + + ShowCommandCompletions(c, name) + return true +} diff --git a/vendor/github.com/urfave/cli/runtests b/vendor/github.com/urfave/cli/runtests new file mode 100755 index 0000000..ee22bde --- /dev/null +++ b/vendor/github.com/urfave/cli/runtests @@ -0,0 +1,122 @@ +#!/usr/bin/env python +from __future__ import print_function + +import argparse +import os +import sys +import tempfile + +from subprocess import check_call, check_output + + +PACKAGE_NAME = os.environ.get( + 'CLI_PACKAGE_NAME', 'github.com/urfave/cli' +) + + +def main(sysargs=sys.argv[:]): + targets = { + 'vet': _vet, + 'test': _test, + 'gfmrun': _gfmrun, + 'toc': _toc, + 'gen': _gen, + } + + parser = argparse.ArgumentParser() + parser.add_argument( + 'target', nargs='?', choices=tuple(targets.keys()), default='test' + ) + args = parser.parse_args(sysargs[1:]) + + targets[args.target]() + return 0 + + +def _test(): + if check_output('go version'.split()).split()[2] < 'go1.2': + _run('go test -v .') + return + + coverprofiles = [] + for subpackage in ['', 'altsrc']: + coverprofile = 'cli.coverprofile' + if subpackage != '': + coverprofile = '{}.coverprofile'.format(subpackage) + + coverprofiles.append(coverprofile) + + _run('go test -v'.split() + [ + '-coverprofile={}'.format(coverprofile), + ('{}/{}'.format(PACKAGE_NAME, subpackage)).rstrip('/') + ]) + + combined_name = _combine_coverprofiles(coverprofiles) + _run('go tool cover -func={}'.format(combined_name)) + os.remove(combined_name) + + +def _gfmrun(): + go_version = check_output('go version'.split()).split()[2] + if go_version < 'go1.3': + print('runtests: skip on {}'.format(go_version), file=sys.stderr) + return + _run(['gfmrun', '-c', str(_gfmrun_count()), '-s', 'README.md']) + + +def _vet(): + _run('go vet ./...') + + +def _toc(): + _run('node_modules/.bin/markdown-toc -i README.md') + _run('git diff --exit-code') + + +def _gen(): + go_version = check_output('go version'.split()).split()[2] + if go_version < 'go1.5': + print('runtests: skip on {}'.format(go_version), file=sys.stderr) + return + + _run('go generate ./...') + _run('git diff --exit-code') + + +def _run(command): + if hasattr(command, 'split'): + command = command.split() + print('runtests: {}'.format(' '.join(command)), file=sys.stderr) + check_call(command) + + +def _gfmrun_count(): + with open('README.md') as infile: + lines = infile.read().splitlines() + return len(filter(_is_go_runnable, lines)) + + +def _is_go_runnable(line): + return line.startswith('package main') + + +def _combine_coverprofiles(coverprofiles): + combined = tempfile.NamedTemporaryFile( + suffix='.coverprofile', delete=False + ) + combined.write('mode: set\n') + + for coverprofile in coverprofiles: + with open(coverprofile, 'r') as infile: + for line in infile.readlines(): + if not line.startswith('mode: '): + combined.write(line) + + combined.flush() + name = combined.name + combined.close() + return name + + +if __name__ == '__main__': + sys.exit(main()) diff --git a/vendor/vendor.json b/vendor/vendor.json new file mode 100644 index 0000000..906a4b9 --- /dev/null +++ b/vendor/vendor.json @@ -0,0 +1,37 @@ +{ + "comment": "", + "ignore": "test", + "package": [ + { + "checksumSHA1": "PZ4KJai7DnuJ2YNJ2v2l2BseB1g=", + "path": "github.com/aymerick/raymond", + "revision": "72acac2207479d21dd45898c2a4264246c818148", + "revisionTime": "2016-12-09T22:07:24Z" + }, + { + "checksumSHA1": "Rvn+RH9pwFno1w6W+mhWsj/PxlA=", + "path": "github.com/aymerick/raymond/ast", + "revision": "72acac2207479d21dd45898c2a4264246c818148", + "revisionTime": "2016-12-09T22:07:24Z" + }, + { + "checksumSHA1": "5SJwPK0MYtJt5YiE1BNc9Wl3+S0=", + "path": "github.com/aymerick/raymond/lexer", + "revision": "72acac2207479d21dd45898c2a4264246c818148", + "revisionTime": "2016-12-09T22:07:24Z" + }, + { + "checksumSHA1": "TCu/8QBP8TApLjSt13a7Qjnyxrs=", + "path": "github.com/aymerick/raymond/parser", + "revision": "72acac2207479d21dd45898c2a4264246c818148", + "revisionTime": "2016-12-09T22:07:24Z" + }, + { + "checksumSHA1": "9LeR7BH4PSu8LRDZ8bY7QY1HXJE=", + "path": "github.com/urfave/cli", + "revision": "4b90d79a682b4bf685762c7452db20f2a676ecb2", + "revisionTime": "2017-07-06T19:46:25Z" + } + ], + "rootPath": "github.com/drone-plugins/drone-webhook" +}