mirror of
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* update github.com/alecthomas/chroma v0.8.0 -> v0.8.1 * github.com/blevesearch/bleve v1.0.10 -> v1.0.12 * editorconfig-core-go v2.1.1 -> v2.3.7 * github.com/gliderlabs/ssh v0.2.2 -> v0.3.1 * migrate editorconfig.ParseBytes to Parse * github.com/shurcooL/vfsgen to 0d455de96546 * github.com/go-git/go-git/v5 v5.1.0 -> v5.2.0 * github.com/google/uuid v1.1.1 -> v1.1.2 * github.com/huandu/xstrings v1.3.0 -> v1.3.2 * github.com/klauspost/compress v1.10.11 -> v1.11.1 * github.com/markbates/goth v1.61.2 -> v1.65.0 * github.com/mattn/go-sqlite3 v1.14.0 -> v1.14.4 * github.com/mholt/archiver v3.3.0 -> v3.3.2 * github.com/microcosm-cc/bluemonday 4f7140c49acb -> v1.0.4 * github.com/minio/minio-go v7.0.4 -> v7.0.5 * github.com/olivere/elastic v7.0.9 -> v7.0.20 * github.com/urfave/cli v1.20.0 -> v1.22.4 * github.com/prometheus/client_golang v1.1.0 -> v1.8.0 * github.com/xanzy/go-gitlab v0.37.0 -> v0.38.1 * mvdan.cc/xurls v2.1.0 -> v2.2.0 Co-authored-by: Lauris BH <lauris@nix.lv>
195 lines
4.1 KiB
Go
Vendored
195 lines
4.1 KiB
Go
Vendored
package cli
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import (
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"bytes"
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"fmt"
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"io"
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"strings"
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"text/template"
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)
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// ToFishCompletion creates a fish completion string for the `*App`
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// The function errors if either parsing or writing of the string fails.
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func (a *App) ToFishCompletion() (string, error) {
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var w bytes.Buffer
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if err := a.writeFishCompletionTemplate(&w); err != nil {
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return "", err
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}
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return w.String(), nil
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}
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type fishCompletionTemplate struct {
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App *App
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Completions []string
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AllCommands []string
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}
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func (a *App) writeFishCompletionTemplate(w io.Writer) error {
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const name = "cli"
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t, err := template.New(name).Parse(FishCompletionTemplate)
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if err != nil {
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return err
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}
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allCommands := []string{}
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// Add global flags
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completions := a.prepareFishFlags(a.VisibleFlags(), allCommands)
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// Add help flag
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if !a.HideHelp {
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completions = append(
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completions,
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a.prepareFishFlags([]Flag{HelpFlag}, allCommands)...,
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)
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}
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// Add version flag
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if !a.HideVersion {
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completions = append(
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completions,
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a.prepareFishFlags([]Flag{VersionFlag}, allCommands)...,
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)
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}
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// Add commands and their flags
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completions = append(
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completions,
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a.prepareFishCommands(a.VisibleCommands(), &allCommands, []string{})...,
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)
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return t.ExecuteTemplate(w, name, &fishCompletionTemplate{
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App: a,
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Completions: completions,
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AllCommands: allCommands,
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})
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}
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func (a *App) prepareFishCommands(commands []Command, allCommands *[]string, previousCommands []string) []string {
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completions := []string{}
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for i := range commands {
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command := &commands[i]
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if command.Hidden {
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continue
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}
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var completion strings.Builder
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completion.WriteString(fmt.Sprintf(
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"complete -r -c %s -n '%s' -a '%s'",
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a.Name,
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a.fishSubcommandHelper(previousCommands),
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strings.Join(command.Names(), " "),
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))
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if command.Usage != "" {
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completion.WriteString(fmt.Sprintf(" -d '%s'",
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escapeSingleQuotes(command.Usage)))
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}
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if !command.HideHelp {
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completions = append(
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completions,
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a.prepareFishFlags([]Flag{HelpFlag}, command.Names())...,
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)
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}
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*allCommands = append(*allCommands, command.Names()...)
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completions = append(completions, completion.String())
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completions = append(
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completions,
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a.prepareFishFlags(command.Flags, command.Names())...,
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)
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// recursevly iterate subcommands
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if len(command.Subcommands) > 0 {
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completions = append(
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completions,
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a.prepareFishCommands(
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command.Subcommands, allCommands, command.Names(),
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)...,
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)
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}
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}
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return completions
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}
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func (a *App) prepareFishFlags(flags []Flag, previousCommands []string) []string {
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completions := []string{}
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for _, f := range flags {
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flag, ok := f.(DocGenerationFlag)
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if !ok {
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continue
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}
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completion := &strings.Builder{}
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completion.WriteString(fmt.Sprintf(
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"complete -c %s -n '%s'",
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a.Name,
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a.fishSubcommandHelper(previousCommands),
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))
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fishAddFileFlag(f, completion)
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for idx, opt := range strings.Split(flag.GetName(), ",") {
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if idx == 0 {
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completion.WriteString(fmt.Sprintf(
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" -l %s", strings.TrimSpace(opt),
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))
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} else {
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completion.WriteString(fmt.Sprintf(
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" -s %s", strings.TrimSpace(opt),
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))
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}
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}
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if flag.TakesValue() {
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completion.WriteString(" -r")
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}
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if flag.GetUsage() != "" {
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completion.WriteString(fmt.Sprintf(" -d '%s'",
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escapeSingleQuotes(flag.GetUsage())))
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}
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completions = append(completions, completion.String())
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}
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return completions
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}
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func fishAddFileFlag(flag Flag, completion *strings.Builder) {
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switch f := flag.(type) {
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case GenericFlag:
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if f.TakesFile {
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return
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}
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case StringFlag:
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if f.TakesFile {
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return
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}
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case StringSliceFlag:
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if f.TakesFile {
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return
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}
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}
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completion.WriteString(" -f")
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}
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func (a *App) fishSubcommandHelper(allCommands []string) string {
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fishHelper := fmt.Sprintf("__fish_%s_no_subcommand", a.Name)
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if len(allCommands) > 0 {
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fishHelper = fmt.Sprintf(
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"__fish_seen_subcommand_from %s",
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strings.Join(allCommands, " "),
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)
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}
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return fishHelper
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}
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func escapeSingleQuotes(input string) string {
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return strings.Replace(input, `'`, `\'`, -1)
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}
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