diff options
Diffstat (limited to 'vendor/github.com/spf13/cobra')
| -rw-r--r-- | vendor/github.com/spf13/cobra/.gitignore | 2 | ||||
| -rw-r--r-- | vendor/github.com/spf13/cobra/README.md | 9 | ||||
| -rw-r--r-- | vendor/github.com/spf13/cobra/bash_completions.go | 48 | ||||
| -rw-r--r-- | vendor/github.com/spf13/cobra/command.go | 97 | ||||
| -rw-r--r-- | vendor/github.com/spf13/cobra/powershell_completions.go | 100 | ||||
| -rw-r--r-- | vendor/github.com/spf13/cobra/powershell_completions.md | 14 | ||||
| -rw-r--r-- | vendor/github.com/spf13/cobra/shell_completions.go | 85 | ||||
| -rw-r--r-- | vendor/github.com/spf13/cobra/zsh_completions.go | 363 | ||||
| -rw-r--r-- | vendor/github.com/spf13/cobra/zsh_completions.md | 39 |
9 files changed, 618 insertions, 139 deletions
diff --git a/vendor/github.com/spf13/cobra/.gitignore b/vendor/github.com/spf13/cobra/.gitignore index 1b8c7c26..3b053c59 100644 --- a/vendor/github.com/spf13/cobra/.gitignore +++ b/vendor/github.com/spf13/cobra/.gitignore @@ -34,3 +34,5 @@ tags *.exe cobra.test + +.idea/* diff --git a/vendor/github.com/spf13/cobra/README.md b/vendor/github.com/spf13/cobra/README.md index ff16e3f6..60c5a425 100644 --- a/vendor/github.com/spf13/cobra/README.md +++ b/vendor/github.com/spf13/cobra/README.md @@ -23,6 +23,7 @@ Many of the most widely used Go projects are built using Cobra, such as: [Istio](https://istio.io), [Prototool](https://github.com/uber/prototool), [mattermost-server](https://github.com/mattermost/mattermost-server), +[Gardener](https://github.com/gardener/gardenctl), etc. [](https://travis-ci.org/spf13/cobra) @@ -48,6 +49,7 @@ etc. * [Suggestions when "unknown command" happens](#suggestions-when-unknown-command-happens) * [Generating documentation for your command](#generating-documentation-for-your-command) * [Generating bash completions](#generating-bash-completions) + * [Generating zsh completions](#generating-zsh-completions) - [Contributing](#contributing) - [License](#license) @@ -336,7 +338,7 @@ rootCmd.PersistentFlags().BoolVarP(&Verbose, "verbose", "v", false, "verbose out A flag can also be assigned locally which will only apply to that specific command. ```go -rootCmd.Flags().StringVarP(&Source, "source", "s", "", "Source directory to read from") +localCmd.Flags().StringVarP(&Source, "source", "s", "", "Source directory to read from") ``` ### Local Flag on Parent Commands @@ -719,6 +721,11 @@ Cobra can generate documentation based on subcommands, flags, etc. in the follow Cobra can generate a bash-completion file. If you add more information to your command, these completions can be amazingly powerful and flexible. Read more about it in [Bash Completions](bash_completions.md). +## Generating zsh completions + +Cobra can generate zsh-completion file. Read more about it in +[Zsh Completions](zsh_completions.md). + # Contributing 1. Fork it diff --git a/vendor/github.com/spf13/cobra/bash_completions.go b/vendor/github.com/spf13/cobra/bash_completions.go index c3c1e501..57bb8e1b 100644 --- a/vendor/github.com/spf13/cobra/bash_completions.go +++ b/vendor/github.com/spf13/cobra/bash_completions.go @@ -545,51 +545,3 @@ func (c *Command) GenBashCompletionFile(filename string) error { return c.GenBashCompletion(outFile) } - -// MarkFlagRequired adds the BashCompOneRequiredFlag annotation to the named flag if it exists, -// and causes your command to report an error if invoked without the flag. -func (c *Command) MarkFlagRequired(name string) error { - return MarkFlagRequired(c.Flags(), name) -} - -// MarkPersistentFlagRequired adds the BashCompOneRequiredFlag annotation to the named persistent flag if it exists, -// and causes your command to report an error if invoked without the flag. -func (c *Command) MarkPersistentFlagRequired(name string) error { - return MarkFlagRequired(c.PersistentFlags(), name) -} - -// MarkFlagRequired adds the BashCompOneRequiredFlag annotation to the named flag if it exists, -// and causes your command to report an error if invoked without the flag. -func MarkFlagRequired(flags *pflag.FlagSet, name string) error { - return flags.SetAnnotation(name, BashCompOneRequiredFlag, []string{"true"}) -} - -// MarkFlagFilename adds the BashCompFilenameExt annotation to the named flag, if it exists. -// Generated bash autocompletion will select filenames for the flag, limiting to named extensions if provided. -func (c *Command) MarkFlagFilename(name string, extensions ...string) error { - return MarkFlagFilename(c.Flags(), name, extensions...) -} - -// MarkFlagCustom adds the BashCompCustom annotation to the named flag, if it exists. -// Generated bash autocompletion will call the bash function f for the flag. -func (c *Command) MarkFlagCustom(name string, f string) error { - return MarkFlagCustom(c.Flags(), name, f) -} - -// MarkPersistentFlagFilename adds the BashCompFilenameExt annotation to the named persistent flag, if it exists. -// Generated bash autocompletion will select filenames for the flag, limiting to named extensions if provided. -func (c *Command) MarkPersistentFlagFilename(name string, extensions ...string) error { - return MarkFlagFilename(c.PersistentFlags(), name, extensions...) -} - -// MarkFlagFilename adds the BashCompFilenameExt annotation to the named flag in the flag set, if it exists. -// Generated bash autocompletion will select filenames for the flag, limiting to named extensions if provided. -func MarkFlagFilename(flags *pflag.FlagSet, name string, extensions ...string) error { - return flags.SetAnnotation(name, BashCompFilenameExt, extensions) -} - -// MarkFlagCustom adds the BashCompCustom annotation to the named flag in the flag set, if it exists. -// Generated bash autocompletion will call the bash function f for the flag. -func MarkFlagCustom(flags *pflag.FlagSet, name string, f string) error { - return flags.SetAnnotation(name, BashCompCustom, []string{f}) -} diff --git a/vendor/github.com/spf13/cobra/command.go b/vendor/github.com/spf13/cobra/command.go index b257f91b..c7e89830 100644 --- a/vendor/github.com/spf13/cobra/command.go +++ b/vendor/github.com/spf13/cobra/command.go @@ -177,8 +177,6 @@ type Command struct { // that we can use on every pflag set and children commands globNormFunc func(f *flag.FlagSet, name string) flag.NormalizedName - // output is an output writer defined by user. - output io.Writer // usageFunc is usage func defined by user. usageFunc func(*Command) error // usageTemplate is usage template defined by user. @@ -195,6 +193,13 @@ type Command struct { helpCommand *Command // versionTemplate is the version template defined by user. versionTemplate string + + // inReader is a reader defined by the user that replaces stdin + inReader io.Reader + // outWriter is a writer defined by the user that replaces stdout + outWriter io.Writer + // errWriter is a writer defined by the user that replaces stderr + errWriter io.Writer } // SetArgs sets arguments for the command. It is set to os.Args[1:] by default, if desired, can be overridden @@ -205,8 +210,28 @@ func (c *Command) SetArgs(a []string) { // SetOutput sets the destination for usage and error messages. // If output is nil, os.Stderr is used. +// Deprecated: Use SetOut and/or SetErr instead func (c *Command) SetOutput(output io.Writer) { - c.output = output + c.outWriter = output + c.errWriter = output +} + +// SetOut sets the destination for usage messages. +// If newOut is nil, os.Stdout is used. +func (c *Command) SetOut(newOut io.Writer) { + c.outWriter = newOut +} + +// SetErr sets the destination for error messages. +// If newErr is nil, os.Stderr is used. +func (c *Command) SetErr(newErr io.Writer) { + c.errWriter = newErr +} + +// SetOut sets the source for input data +// If newIn is nil, os.Stdin is used. +func (c *Command) SetIn(newIn io.Reader) { + c.inReader = newIn } // SetUsageFunc sets usage function. Usage can be defined by application. @@ -267,9 +292,19 @@ func (c *Command) OutOrStderr() io.Writer { return c.getOut(os.Stderr) } +// ErrOrStderr returns output to stderr +func (c *Command) ErrOrStderr() io.Writer { + return c.getErr(os.Stderr) +} + +// ErrOrStderr returns output to stderr +func (c *Command) InOrStdin() io.Reader { + return c.getIn(os.Stdin) +} + func (c *Command) getOut(def io.Writer) io.Writer { - if c.output != nil { - return c.output + if c.outWriter != nil { + return c.outWriter } if c.HasParent() { return c.parent.getOut(def) @@ -277,6 +312,26 @@ func (c *Command) getOut(def io.Writer) io.Writer { return def } +func (c *Command) getErr(def io.Writer) io.Writer { + if c.errWriter != nil { + return c.errWriter + } + if c.HasParent() { + return c.parent.getErr(def) + } + return def +} + +func (c *Command) getIn(def io.Reader) io.Reader { + if c.inReader != nil { + return c.inReader + } + if c.HasParent() { + return c.parent.getIn(def) + } + return def +} + // UsageFunc returns either the function set by SetUsageFunc for this command // or a parent, or it returns a default usage function. func (c *Command) UsageFunc() (f func(*Command) error) { @@ -329,13 +384,22 @@ func (c *Command) Help() error { return nil } -// UsageString return usage string. +// UsageString returns usage string. func (c *Command) UsageString() string { - tmpOutput := c.output + // Storing normal writers + tmpOutput := c.outWriter + tmpErr := c.errWriter + bb := new(bytes.Buffer) - c.SetOutput(bb) + c.outWriter = bb + c.errWriter = bb + c.Usage() - c.output = tmpOutput + + // Setting things back to normal + c.outWriter = tmpOutput + c.errWriter = tmpErr + return bb.String() } @@ -1068,6 +1132,21 @@ func (c *Command) Printf(format string, i ...interface{}) { c.Print(fmt.Sprintf(format, i...)) } +// PrintErr is a convenience method to Print to the defined Err output, fallback to Stderr if not set. +func (c *Command) PrintErr(i ...interface{}) { + fmt.Fprint(c.ErrOrStderr(), i...) +} + +// PrintErrln is a convenience method to Println to the defined Err output, fallback to Stderr if not set. +func (c *Command) PrintErrln(i ...interface{}) { + c.Print(fmt.Sprintln(i...)) +} + +// PrintErrf is a convenience method to Printf to the defined Err output, fallback to Stderr if not set. +func (c *Command) PrintErrf(format string, i ...interface{}) { + c.Print(fmt.Sprintf(format, i...)) +} + // CommandPath returns the full path to this command. func (c *Command) CommandPath() string { if c.HasParent() { diff --git a/vendor/github.com/spf13/cobra/powershell_completions.go b/vendor/github.com/spf13/cobra/powershell_completions.go new file mode 100644 index 00000000..756c61b9 --- /dev/null +++ b/vendor/github.com/spf13/cobra/powershell_completions.go @@ -0,0 +1,100 @@ +// PowerShell completions are based on the amazing work from clap: +// https://github.com/clap-rs/clap/blob/3294d18efe5f264d12c9035f404c7d189d4824e1/src/completions/powershell.rs +// +// The generated scripts require PowerShell v5.0+ (which comes Windows 10, but +// can be downloaded separately for windows 7 or 8.1). + +package cobra + +import ( + "bytes" + "fmt" + "io" + "os" + "strings" + + "github.com/spf13/pflag" +) + +var powerShellCompletionTemplate = `using namespace System.Management.Automation +using namespace System.Management.Automation.Language +Register-ArgumentCompleter -Native -CommandName '%s' -ScriptBlock { + param($wordToComplete, $commandAst, $cursorPosition) + $commandElements = $commandAst.CommandElements + $command = @( + '%s' + for ($i = 1; $i -lt $commandElements.Count; $i++) { + $element = $commandElements[$i] + if ($element -isnot [StringConstantExpressionAst] -or + $element.StringConstantType -ne [StringConstantType]::BareWord -or + $element.Value.StartsWith('-')) { + break + } + $element.Value + } + ) -join ';' + $completions = @(switch ($command) {%s + }) + $completions.Where{ $_.CompletionText -like "$wordToComplete*" } | + Sort-Object -Property ListItemText +}` + +func generatePowerShellSubcommandCases(out io.Writer, cmd *Command, previousCommandName string) { + var cmdName string + if previousCommandName == "" { + cmdName = cmd.Name() + } else { + cmdName = fmt.Sprintf("%s;%s", previousCommandName, cmd.Name()) + } + + fmt.Fprintf(out, "\n '%s' {", cmdName) + + cmd.Flags().VisitAll(func(flag *pflag.Flag) { + if nonCompletableFlag(flag) { + return + } + usage := escapeStringForPowerShell(flag.Usage) + if len(flag.Shorthand) > 0 { + fmt.Fprintf(out, "\n [CompletionResult]::new('-%s', '%s', [CompletionResultType]::ParameterName, '%s')", flag.Shorthand, flag.Shorthand, usage) + } + fmt.Fprintf(out, "\n [CompletionResult]::new('--%s', '%s', [CompletionResultType]::ParameterName, '%s')", flag.Name, flag.Name, usage) + }) + + for _, subCmd := range cmd.Commands() { + usage := escapeStringForPowerShell(subCmd.Short) + fmt.Fprintf(out, "\n [CompletionResult]::new('%s', '%s', [CompletionResultType]::ParameterValue, '%s')", subCmd.Name(), subCmd.Name(), usage) + } + + fmt.Fprint(out, "\n break\n }") + + for _, subCmd := range cmd.Commands() { + generatePowerShellSubcommandCases(out, subCmd, cmdName) + } +} + +func escapeStringForPowerShell(s string) string { + return strings.Replace(s, "'", "''", -1) +} + +// GenPowerShellCompletion generates PowerShell completion file and writes to the passed writer. +func (c *Command) GenPowerShellCompletion(w io.Writer) error { + buf := new(bytes.Buffer) + + var subCommandCases bytes.Buffer + generatePowerShellSubcommandCases(&subCommandCases, c, "") + fmt.Fprintf(buf, powerShellCompletionTemplate, c.Name(), c.Name(), subCommandCases.String()) + + _, err := buf.WriteTo(w) + return err +} + +// GenPowerShellCompletionFile generates PowerShell completion file. +func (c *Command) GenPowerShellCompletionFile(filename string) error { + outFile, err := os.Create(filename) + if err != nil { + return err + } + defer outFile.Close() + + return c.GenPowerShellCompletion(outFile) +} diff --git a/vendor/github.com/spf13/cobra/powershell_completions.md b/vendor/github.com/spf13/cobra/powershell_completions.md new file mode 100644 index 00000000..afed8024 --- /dev/null +++ b/vendor/github.com/spf13/cobra/powershell_completions.md @@ -0,0 +1,14 @@ +# Generating PowerShell Completions For Your Own cobra.Command + +Cobra can generate PowerShell completion scripts. Users need PowerShell version 5.0 or above, which comes with Windows 10 and can be downloaded separately for Windows 7 or 8.1. They can then write the completions to a file and source this file from their PowerShell profile, which is referenced by the `$Profile` environment variable. See `Get-Help about_Profiles` for more info about PowerShell profiles. + +# What's supported + +- Completion for subcommands using their `.Short` description +- Completion for non-hidden flags using their `.Name` and `.Shorthand` + +# What's not yet supported + +- Command aliases +- Required, filename or custom flags (they will work like normal flags) +- Custom completion scripts diff --git a/vendor/github.com/spf13/cobra/shell_completions.go b/vendor/github.com/spf13/cobra/shell_completions.go new file mode 100644 index 00000000..ba0af9cb --- /dev/null +++ b/vendor/github.com/spf13/cobra/shell_completions.go @@ -0,0 +1,85 @@ +package cobra + +import ( + "github.com/spf13/pflag" +) + +// MarkFlagRequired adds the BashCompOneRequiredFlag annotation to the named flag if it exists, +// and causes your command to report an error if invoked without the flag. +func (c *Command) MarkFlagRequired(name string) error { + return MarkFlagRequired(c.Flags(), name) +} + +// MarkPersistentFlagRequired adds the BashCompOneRequiredFlag annotation to the named persistent flag if it exists, +// and causes your command to report an error if invoked without the flag. +func (c *Command) MarkPersistentFlagRequired(name string) error { + return MarkFlagRequired(c.PersistentFlags(), name) +} + +// MarkFlagRequired adds the BashCompOneRequiredFlag annotation to the named flag if it exists, +// and causes your command to report an error if invoked without the flag. +func MarkFlagRequired(flags *pflag.FlagSet, name string) error { + return flags.SetAnnotation(name, BashCompOneRequiredFlag, []string{"true"}) +} + +// MarkFlagFilename adds the BashCompFilenameExt annotation to the named flag, if it exists. +// Generated bash autocompletion will select filenames for the flag, limiting to named extensions if provided. +func (c *Command) MarkFlagFilename(name string, extensions ...string) error { + return MarkFlagFilename(c.Flags(), name, extensions...) +} + +// MarkFlagCustom adds the BashCompCustom annotation to the named flag, if it exists. +// Generated bash autocompletion will call the bash function f for the flag. +func (c *Command) MarkFlagCustom(name string, f string) error { + return MarkFlagCustom(c.Flags(), name, f) +} + +// MarkPersistentFlagFilename instructs the various shell completion +// implementations to limit completions for this persistent flag to the +// specified extensions (patterns). +// +// Shell Completion compatibility matrix: bash, zsh +func (c *Command) MarkPersistentFlagFilename(name string, extensions ...string) error { + return MarkFlagFilename(c.PersistentFlags(), name, extensions...) +} + +// MarkFlagFilename instructs the various shell completion implementations to +// limit completions for this flag to the specified extensions (patterns). +// +// Shell Completion compatibility matrix: bash, zsh +func MarkFlagFilename(flags *pflag.FlagSet, name string, extensions ...string) error { + return flags.SetAnnotation(name, BashCompFilenameExt, extensions) +} + +// MarkFlagCustom instructs the various shell completion implementations to +// limit completions for this flag to the specified extensions (patterns). +// +// Shell Completion compatibility matrix: bash, zsh +func MarkFlagCustom(flags *pflag.FlagSet, name string, f string) error { + return flags.SetAnnotation(name, BashCompCustom, []string{f}) +} + +// MarkFlagDirname instructs the various shell completion implementations to +// complete only directories with this named flag. +// +// Shell Completion compatibility matrix: zsh +func (c *Command) MarkFlagDirname(name string) error { + return MarkFlagDirname(c.Flags(), name) +} + +// MarkPersistentFlagDirname instructs the various shell completion +// implementations to complete only directories with this persistent named flag. +// +// Shell Completion compatibility matrix: zsh +func (c *Command) MarkPersistentFlagDirname(name string) error { + return MarkFlagDirname(c.PersistentFlags(), name) +} + +// MarkFlagDirname instructs the various shell completion implementations to +// complete only directories with this specified flag. +// +// Shell Completion compatibility matrix: zsh +func MarkFlagDirname(flags *pflag.FlagSet, name string) error { + zshPattern := "-(/)" + return flags.SetAnnotation(name, zshCompDirname, []string{zshPattern}) +} diff --git a/vendor/github.com/spf13/cobra/zsh_completions.go b/vendor/github.com/spf13/cobra/zsh_completions.go index e76d6071..12755482 100644 --- a/vendor/github.com/spf13/cobra/zsh_completions.go +++ b/vendor/github.com/spf13/cobra/zsh_completions.go @@ -1,14 +1,102 @@ package cobra import ( - "bytes" + "encoding/json" "fmt" "io" "os" "sort" "strings" + "text/template" + + "github.com/spf13/pflag" +) + +const ( + zshCompArgumentAnnotation = "cobra_annotations_zsh_completion_argument_annotation" + zshCompArgumentFilenameComp = "cobra_annotations_zsh_completion_argument_file_completion" + zshCompArgumentWordComp = "cobra_annotations_zsh_completion_argument_word_completion" + zshCompDirname = "cobra_annotations_zsh_dirname" +) + +var ( + zshCompFuncMap = template.FuncMap{ + "genZshFuncName": zshCompGenFuncName, + "extractFlags": zshCompExtractFlag, + "genFlagEntryForZshArguments": zshCompGenFlagEntryForArguments, + "extractArgsCompletions": zshCompExtractArgumentCompletionHintsForRendering, + } + zshCompletionText = ` +{{/* should accept Command (that contains subcommands) as parameter */}} +{{define "argumentsC" -}} +{{ $cmdPath := genZshFuncName .}} +function {{$cmdPath}} { + local -a commands + + _arguments -C \{{- range extractFlags .}} + {{genFlagEntryForZshArguments .}} \{{- end}} + "1: :->cmnds" \ + "*::arg:->args" + + case $state in + cmnds) + commands=({{range .Commands}}{{if not .Hidden}} + "{{.Name}}:{{.Short}}"{{end}}{{end}} + ) + _describe "command" commands + ;; + esac + + case "$words[1]" in {{- range .Commands}}{{if not .Hidden}} + {{.Name}}) + {{$cmdPath}}_{{.Name}} + ;;{{end}}{{end}} + esac +} +{{range .Commands}}{{if not .Hidden}} +{{template "selectCmdTemplate" .}} +{{- end}}{{end}} +{{- end}} + +{{/* should accept Command without subcommands as parameter */}} +{{define "arguments" -}} +function {{genZshFuncName .}} { +{{" _arguments"}}{{range extractFlags .}} \ + {{genFlagEntryForZshArguments . -}} +{{end}}{{range extractArgsCompletions .}} \ + {{.}}{{end}} +} +{{end}} + +{{/* dispatcher for commands with or without subcommands */}} +{{define "selectCmdTemplate" -}} +{{if .Hidden}}{{/* ignore hidden*/}}{{else -}} +{{if .Commands}}{{template "argumentsC" .}}{{else}}{{template "arguments" .}}{{end}} +{{- end}} +{{- end}} + +{{/* template entry point */}} +{{define "Main" -}} +#compdef _{{.Name}} {{.Name}} + +{{template "selectCmdTemplate" .}} +{{end}} +` ) +// zshCompArgsAnnotation is used to encode/decode zsh completion for +// arguments to/from Command.Annotations. +type zshCompArgsAnnotation map[int]zshCompArgHint + +type zshCompArgHint struct { + // Indicates the type of the completion to use. One of: + // zshCompArgumentFilenameComp or zshCompArgumentWordComp + Tipe string `json:"type"` + + // A value for the type above (globs for file completion or words) + Options []string `json:"options"` +} + // GenZshCompletionFile generates zsh completion file. func (c *Command) GenZshCompletionFile(filename string) error { outFile, err := os.Create(filename) @@ -20,116 +108,229 @@ func (c *Command) GenZshCompletionFile(filename string) error { return c.GenZshCompletion(outFile) } -// GenZshCompletion generates a zsh completion file and writes to the passed writer. +// GenZshCompletion generates a zsh completion file and writes to the passed +// writer. The completion always run on the root command regardless of the +// command it was called from. func (c *Command) GenZshCompletion(w io.Writer) error { - buf := new(bytes.Buffer) - - writeHeader(buf, c) - maxDepth := maxDepth(c) - writeLevelMapping(buf, maxDepth) - writeLevelCases(buf, maxDepth, c) + tmpl, err := template.New("Main").Funcs(zshCompFuncMap).Parse(zshCompletionText) + if err != nil { + return fmt.Errorf("error creating zsh completion template: %v", err) + } + return tmpl.Execute(w, c.Root()) +} - _, err := buf.WriteTo(w) - return err +// MarkZshCompPositionalArgumentFile marks the specified argument (first +// argument is 1) as completed by file selection. patterns (e.g. "*.txt") are +// optional - if not provided the completion will search for all files. +func (c *Command) MarkZshCompPositionalArgumentFile(argPosition int, patterns ...string) error { + if argPosition < 1 { + return fmt.Errorf("Invalid argument position (%d)", argPosition) + } + annotation, err := c.zshCompGetArgsAnnotations() + if err != nil { + return err + } + if c.zshcompArgsAnnotationnIsDuplicatePosition(annotation, argPosition) { + return fmt.Errorf("Duplicate annotation for positional argument at index %d", argPosition) + } + annotation[argPosition] = zshCompArgHint{ + Tipe: zshCompArgumentFilenameComp, + Options: patterns, + } + return c.zshCompSetArgsAnnotations(annotation) } -func writeHeader(w io.Writer, cmd *Command) { - fmt.Fprintf(w, "#compdef %s\n\n", cmd.Name()) +// MarkZshCompPositionalArgumentWords marks the specified positional argument +// (first argument is 1) as completed by the provided words. At east one word +// must be provided, spaces within words will be offered completion with +// "word\ word". +func (c *Command) MarkZshCompPositionalArgumentWords(argPosition int, words ...string) error { + if argPosition < 1 { + return fmt.Errorf("Invalid argument position (%d)", argPosition) + } + if len(words) == 0 { + return fmt.Errorf("Trying to set empty word list for positional argument %d", argPosition) + } + annotation, err := c.zshCompGetArgsAnnotations() + if err != nil { + return err + } + if c.zshcompArgsAnnotationnIsDuplicatePosition(annotation, argPosition) { + return fmt.Errorf("Duplicate annotation for positional argument at index %d", argPosition) + } + annotation[argPosition] = zshCompArgHint{ + Tipe: zshCompArgumentWordComp, + Options: words, + } + return c.zshCompSetArgsAnnotations(annotation) } -func maxDepth(c *Command) int { - if len(c.Commands()) == 0 { - return 0 +func zshCompExtractArgumentCompletionHintsForRendering(c *Command) ([]string, error) { + var result []string + annotation, err := c.zshCompGetArgsAnnotations() + if err != nil { + return nil, err } - maxDepthSub := 0 - for _, s := range c.Commands() { - subDepth := maxDepth(s) - if subDepth > maxDepthSub { - maxDepthSub = subDepth + for k, v := range annotation { + s, err := zshCompRenderZshCompArgHint(k, v) + if err != nil { + return nil, err } + result = append(result, s) } - return 1 + maxDepthSub + if len(c.ValidArgs) > 0 { + if _, positionOneExists := annotation[1]; !positionOneExists { + s, err := zshCompRenderZshCompArgHint(1, zshCompArgHint{ + Tipe: zshCompArgumentWordComp, + Options: c.ValidArgs, + }) + if err != nil { + return nil, err + } + result = append(result, s) + } + } + sort.Strings(result) + return result, nil } -func writeLevelMapping(w io.Writer, numLevels int) { - fmt.Fprintln(w, `_arguments \`) - for i := 1; i <= numLevels; i++ { - fmt.Fprintf(w, ` '%d: :->level%d' \`, i, i) - fmt.Fprintln(w) +func zshCompRenderZshCompArgHint(i int, z zshCompArgHint) (string, error) { + switch t := z.Tipe; t { + case zshCompArgumentFilenameComp: + var globs []string + for _, g := range z.Options { + globs = append(globs, fmt.Sprintf(`-g "%s"`, g)) + } + return fmt.Sprintf(`'%d: :_files %s'`, i, strings.Join(globs, " ")), nil + case zshCompArgumentWordComp: + var words []string + for _, w := range z.Options { + words = append(words, fmt.Sprintf("%q", w)) + } + return fmt.Sprintf(`'%d: :(%s)'`, i, strings.Join(words, " ")), nil + default: + return "", fmt.Errorf("Invalid zsh argument completion annotation: %s", t) } - fmt.Fprintf(w, ` '%d: :%s'`, numLevels+1, "_files") - fmt.Fprintln(w) } -func writeLevelCases(w io.Writer, maxDepth int, root *Command) { - fmt.Fprintln(w, "case $state in") - defer fmt.Fprintln(w, "esac") +func (c *Command) zshcompArgsAnnotationnIsDuplicatePosition(annotation zshCompArgsAnnotation, position int) bool { + _, dup := annotation[position] + return dup +} - for i := 1; i <= maxDepth; i++ { - fmt.Fprintf(w, " level%d)\n", i) - writeLevel(w, root, i) - fmt.Fprintln(w, " ;;") +func (c *Command) zshCompGetArgsAnnotations() (zshCompArgsAnnotation, error) { + annotation := make(zshCompArgsAnnotation) + annotationString, ok := c.Annotations[zshCompArgumentAnnotation] + if !ok { + return annotation, nil + } + err := json.Unmarshal([]byte(annotationString), &annotation) + if err != nil { + return annotation, fmt.Errorf("Error unmarshaling zsh argument annotation: %v", err) } - fmt.Fprintln(w, " *)") - fmt.Fprintln(w, " _arguments '*: :_files'") - fmt.Fprintln(w, " ;;") + return annotation, nil } -func writeLevel(w io.Writer, root *Command, i int) { - fmt.Fprintf(w, " case $words[%d] in\n", i) - defer fmt.Fprintln(w, " esac") - - commands := filterByLevel(root, i) - byParent := groupByParent(commands) +func (c *Command) zshCompSetArgsAnnotations(annotation zshCompArgsAnnotation) error { + jsn, err := json.Marshal(annotation) + if err != nil { + return fmt.Errorf("Error marshaling zsh argument annotation: %v", err) + } + if c.Annotations == nil { + c.Annotations = make(map[string]string) + } + c.Annotations[zshCompArgumentAnnotation] = string(jsn) + return nil +} - // sort the parents to keep a determinist order - parents := make([]string, len(byParent)) - j := 0 - for parent := range byParent { - parents[j] = parent - j++ +func zshCompGenFuncName(c *Command) string { + if c.HasParent() { + return zshCompGenFuncName(c.Parent()) + "_" + c.Name() } - sort.StringSlice(parents).Sort() + return "_" + c.Name() +} + +func zshCompExtractFlag(c *Command) []*pflag.Flag { + var flags []*pflag.Flag + c.LocalFlags().VisitAll(func(f *pflag.Flag) { + if !f.Hidden { + flags = append(flags, f) + } + }) + c.InheritedFlags().VisitAll(func(f *pflag.Flag) { + if !f.Hidden { + flags = append(flags, f) + } + }) + return flags +} - for _, parent := range parents { - names := names(byParent[parent]) - fmt.Fprintf(w, " %s)\n", parent) - fmt.Fprintf(w, " _arguments '%d: :(%s)'\n", i, strings.Join(names, " ")) - fmt.Fprintln(w, " ;;") +// zshCompGenFlagEntryForArguments returns an entry that matches _arguments +// zsh-completion parameters. It's too complicated to generate in a template. +func zshCompGenFlagEntryForArguments(f *pflag.Flag) string { + if f.Name == "" || f.Shorthand == "" { + return zshCompGenFlagEntryForSingleOptionFlag(f) } - fmt.Fprintln(w, " *)") - fmt.Fprintln(w, " _arguments '*: :_files'") - fmt.Fprintln(w, " ;;") + return zshCompGenFlagEntryForMultiOptionFlag(f) } -func filterByLevel(c *Command, l int) []*Command { - cs := make([]*Command, 0) - if l == 0 { - cs = append(cs, c) - return cs +func zshCompGenFlagEntryForSingleOptionFlag(f *pflag.Flag) string { + var option, multiMark, extras string + + if zshCompFlagCouldBeSpecifiedMoreThenOnce(f) { + multiMark = "*" } - for _, s := range c.Commands() { - cs = append(cs, filterByLevel(s, l-1)...) + + option = "--" + f.Name + if option == "--" { + option = "-" + f.Shorthand } - return cs + extras = zshCompGenFlagEntryExtras(f) + + return fmt.Sprintf(`'%s%s[%s]%s'`, multiMark, option, zshCompQuoteFlagDescription(f.Usage), extras) } -func groupByParent(commands []*Command) map[string][]*Command { - m := make(map[string][]*Command) - for _, c := range commands { - parent := c.Parent() - if parent == nil { - continue - } - m[parent.Name()] = append(m[parent.Name()], c) +func zshCompGenFlagEntryForMultiOptionFlag(f *pflag.Flag) string { + var options, parenMultiMark, curlyMultiMark, extras string + + if zshCompFlagCouldBeSpecifiedMoreThenOnce(f) { + parenMultiMark = "*" + curlyMultiMark = "\\*" } - return m + + options = fmt.Sprintf(`'(%s-%s %s--%s)'{%s-%s,%s--%s}`, + parenMultiMark, f.Shorthand, parenMultiMark, f.Name, curlyMultiMark, f.Shorthand, curlyMultiMark, f.Name) + extras = zshCompGenFlagEntryExtras(f) + + return fmt.Sprintf(`%s'[%s]%s'`, options, zshCompQuoteFlagDescription(f.Usage), extras) } -func names(commands []*Command) []string { - ns := make([]string, len(commands)) - for i, c := range commands { - ns[i] = c.Name() +func zshCompGenFlagEntryExtras(f *pflag.Flag) string { + if f.NoOptDefVal != "" { + return "" } - return ns + + extras := ":" // allow options for flag (even without assistance) + for key, values := range f.Annotations { + switch key { + case zshCompDirname: + extras = fmt.Sprintf(":filename:_files -g %q", values[0]) + case BashCompFilenameExt: + extras = ":filename:_files" + for _, pattern := range values { + extras = extras + fmt.Sprintf(` -g "%s"`, pattern) + } + } + } + + return extras +} + +func zshCompFlagCouldBeSpecifiedMoreThenOnce(f *pflag.Flag) bool { + return strings.Contains(f.Value.Type(), "Slice") || + strings.Contains(f.Value.Type(), "Array") +} + +func zshCompQuoteFlagDescription(s string) string { + return strings.Replace(s, "'", `'\''`, -1) } diff --git a/vendor/github.com/spf13/cobra/zsh_completions.md b/vendor/github.com/spf13/cobra/zsh_completions.md new file mode 100644 index 00000000..df9c2eac --- /dev/null +++ b/vendor/github.com/spf13/cobra/zsh_completions.md @@ -0,0 +1,39 @@ +## Generating Zsh Completion for your cobra.Command + +Cobra supports native Zsh completion generated from the root `cobra.Command`. +The generated completion script should be put somewhere in your `$fpath` named +`_<YOUR COMMAND>`. + +### What's Supported + +* Completion for all non-hidden subcommands using their `.Short` description. +* Completion for all non-hidden flags using the following rules: + * Filename completion works by marking the flag with `cmd.MarkFlagFilename...` + family of commands. + * The requirement for argument to the flag is decided by the `.NoOptDefVal` + flag value - if it's empty then completion will expect an argument. + * Flags of one of the various `*Array` and `*Slice` types supports multiple + specifications (with or without argument depending on the specific type). +* Completion of positional arguments using the following rules: + * Argument position for all options below starts at `1`. If argument position + `0` is requested it will raise an error. + * Use `command.MarkZshCompPositionalArgumentFile` to complete filenames. Glob + patterns (e.g. `"*.log"`) are optional - if not specified it will offer to + complete all file types. + * Use `command.MarkZshCompPositionalArgumentWords` to offer specific words for + completion. At least one word is required. + * It's possible to specify completion for some arguments and leave some + unspecified (e.g. offer words for second argument but nothing for first + argument). This will cause no completion for first argument but words + completion for second argument. + * If no argument completion was specified for 1st argument (but optionally was + specified for 2nd) and the command has `ValidArgs` it will be used as + completion options for 1st argument. + * Argument completions only offered for commands with no subcommands. + +### What's not yet Supported + +* Custom completion scripts are not supported yet (We should probably create zsh + specific one, doesn't make sense to re-use the bash one as the functions will + be different). +* Whatever other feature you're looking for and doesn't exist :) |