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Copy pathhelp_template.go
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204 lines (152 loc) · 6.28 KB
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//go:build !urfave_cli_no_template
package cli
import (
"io"
"strings"
"text/tabwriter"
"text/template"
)
// templatesSupported is true unless built with the urfave_cli_no_template tag.
const templatesSupported = true
// RootCommandHelpTemplate 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 RootCommandHelpTemplate = `NAME:
{{template "helpNameTemplate" .}}
USAGE:
{{if .UsageText}}{{wrap .UsageText 3}}{{else}}{{.FullName}} {{if .VisibleFlags}}[global options]{{end}}{{if .VisibleCommands}} [command [command options]]{{end}}{{if .ArgsUsage}} {{.ArgsUsage}}{{else}}{{if .Arguments}} [arguments...]{{end}}{{end}}{{end}}{{if .Version}}{{if not .HideVersion}}
VERSION:
{{.Version}}{{end}}{{end}}{{if .Description}}
DESCRIPTION:
{{template "descriptionTemplate" .}}{{end}}
{{- if len .Authors}}
AUTHOR{{template "authorsTemplate" .}}{{end}}{{if .VisibleCommands}}
COMMANDS:{{template "visibleCommandCategoryTemplate" .}}{{end}}{{if .VisibleFlagCategories}}
GLOBAL OPTIONS:{{template "visibleFlagCategoryTemplate" .}}{{else if .VisibleFlags}}
GLOBAL OPTIONS:{{template "visibleFlagTemplate" .}}{{end}}{{if .Copyright}}
COPYRIGHT:
{{template "copyrightTemplate" .}}{{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:
{{template "helpNameTemplate" .}}
USAGE:
{{template "usageTemplate" .}}{{if .Category}}
CATEGORY:
{{.Category}}{{end}}{{if .Description}}
DESCRIPTION:
{{template "descriptionTemplate" .}}{{end}}{{if .VisibleFlagCategories}}
OPTIONS:{{template "visibleFlagCategoryTemplate" .}}{{else if .VisibleFlags}}
OPTIONS:{{template "visibleFlagTemplate" .}}{{end}}{{if .VisiblePersistentFlags}}
GLOBAL OPTIONS:{{template "visiblePersistentFlagTemplate" .}}{{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:
{{template "helpNameTemplate" .}}
USAGE:
{{if .UsageText}}{{wrap .UsageText 3}}{{else}}{{.FullName}}{{if .VisibleCommands}} [command [command options]]{{end}}{{if .ArgsUsage}} {{.ArgsUsage}}{{else}}{{if .Arguments}} [arguments...]{{end}}{{end}}{{end}}{{if .Category}}
CATEGORY:
{{.Category}}{{end}}{{if .Description}}
DESCRIPTION:
{{template "descriptionTemplate" .}}{{end}}{{if .VisibleCommands}}
COMMANDS:{{template "visibleCommandTemplate" .}}{{end}}{{if .VisibleFlagCategories}}
OPTIONS:{{template "visibleFlagCategoryTemplate" .}}{{else if .VisibleFlags}}
OPTIONS:{{template "visibleFlagTemplate" .}}{{end}}{{if .VisiblePersistentFlags}}
GLOBAL OPTIONS:{{template "visiblePersistentFlagTemplate" .}}{{end}}
`
var FishCompletionTemplate = `# {{ .Command.Name }} fish shell completion
function __fish_{{ .Command.Name }}_no_subcommand --description 'Test if there has been any subcommand yet'
for i in (commandline -opc)
if contains -- $i{{ range $v := .AllCommands }} {{ $v }}{{ end }}
return 1
end
end
return 0
end
{{ range $v := .Completions }}{{ $v }}
{{ end }}`
// DefaultPrintHelpCustom is the default implementation of HelpPrinterCustom.
//
// The customFuncs map will be combined with a default template.FuncMap to
// allow using arbitrary functions in template rendering.
func DefaultPrintHelpCustom(out io.Writer, templ string, data any, customFuncs map[string]any) {
const maxLineLength = 10000
tracef("building default funcMap")
funcMap := template.FuncMap{
"join": strings.Join,
"subtract": subtract,
"indent": indent,
"nindent": nindent,
"trim": strings.TrimSpace,
"wrap": func(input string, offset int) string { return wrap(input, offset, maxLineLength) },
"offset": offset,
"offsetCommands": offsetCommands,
}
if wa, ok := customFuncs["wrapAt"]; ok {
if wrapAtFunc, ok := wa.(func() int); ok {
wrapAt := wrapAtFunc()
customFuncs["wrap"] = func(input string, offset int) string {
return wrap(input, offset, wrapAt)
}
}
}
for key, value := range customFuncs {
funcMap[key] = value
}
w := tabwriter.NewWriter(out, 1, 8, 2, ' ', 0)
t := template.Must(template.New("help").Funcs(funcMap).Parse(templ))
if _, err := t.New("helpNameTemplate").Parse(helpNameTemplate); err != nil {
handleTemplateError(err)
}
if _, err := t.New("argsTemplate").Parse(argsTemplate); err != nil {
handleTemplateError(err)
}
if _, err := t.New("usageTemplate").Parse(usageTemplate); err != nil {
handleTemplateError(err)
}
if _, err := t.New("descriptionTemplate").Parse(descriptionTemplate); err != nil {
handleTemplateError(err)
}
if _, err := t.New("visibleCommandTemplate").Parse(visibleCommandTemplate); err != nil {
handleTemplateError(err)
}
if _, err := t.New("copyrightTemplate").Parse(copyrightTemplate); err != nil {
handleTemplateError(err)
}
if _, err := t.New("versionTemplate").Parse(versionTemplate); err != nil {
handleTemplateError(err)
}
if _, err := t.New("visibleFlagCategoryTemplate").Parse(visibleFlagCategoryTemplate); err != nil {
handleTemplateError(err)
}
if _, err := t.New("visibleFlagTemplate").Parse(visibleFlagTemplate); err != nil {
handleTemplateError(err)
}
if _, err := t.New("visiblePersistentFlagTemplate").Parse(visiblePersistentFlagTemplate); err != nil {
handleTemplateError(err)
}
if _, err := t.New("visibleGlobalFlagCategoryTemplate").Parse(strings.ReplaceAll(visibleFlagCategoryTemplate, "OPTIONS", "GLOBAL OPTIONS")); err != nil {
handleTemplateError(err)
}
if _, err := t.New("authorsTemplate").Parse(authorsTemplate); err != nil {
handleTemplateError(err)
}
if _, err := t.New("visibleCommandCategoryTemplate").Parse(visibleCommandCategoryTemplate); err != nil {
handleTemplateError(err)
}
tracef("executing template")
handleTemplateError(t.Execute(w, data))
_ = w.Flush()
}
func renderFishCompletion(w io.Writer, data *fishCommandCompletionTemplate) error {
const name = "cli"
t, err := template.New(name).Parse(FishCompletionTemplate)
if err != nil {
return err
}
return t.ExecuteTemplate(w, name, data)
}