mirror of
https://github.com/charmbracelet/gum.git
synced 2024-10-26 07:10:39 +03:00
94 lines
1.9 KiB
Go
94 lines
1.9 KiB
Go
package completion
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import (
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"fmt"
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"io"
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"strings"
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"github.com/alecthomas/kong"
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)
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// Fish is a fish shell completion generator.
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type Fish struct{}
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// Run generates fish completion script.
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func (f Fish) Run(ctx *kong.Context) error {
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var buf strings.Builder
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buf.WriteString(`# Fish shell completion for gum
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# Generated by gum completion
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# disable file completion unless explicitly enabled
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complete -c gum -f
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`)
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node := ctx.Model.Node
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f.gen(&buf, node)
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_, err := fmt.Fprint(ctx.Stdout, buf.String())
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if err != nil {
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return fmt.Errorf("unable to generate fish completion: %w", err)
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}
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return nil
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}
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func (f Fish) gen(buf io.StringWriter, cmd *kong.Node) {
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root := cmd
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for root.Parent != nil {
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root = root.Parent
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}
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rootName := root.Name
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if cmd.Parent == nil {
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_, _ = buf.WriteString(fmt.Sprintf("# %s\n", rootName))
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} else {
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_, _ = buf.WriteString(fmt.Sprintf("# %s\n", cmd.Path()))
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_, _ = buf.WriteString(
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fmt.Sprintf("complete -c %s -f -n '__fish_use_subcommand' -a %s -d '%s'\n",
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rootName,
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cmd.Name,
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cmd.Help,
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),
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)
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}
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for _, f := range cmd.Flags {
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if f.Hidden {
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continue
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}
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if cmd.Parent == nil {
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_, _ = buf.WriteString(
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fmt.Sprintf("complete -c %s -f",
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rootName,
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),
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)
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} else {
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_, _ = buf.WriteString(
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fmt.Sprintf("complete -c %s -f -n '__fish_seen_subcommand_from %s'",
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rootName,
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cmd.Name,
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),
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)
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}
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if !f.IsBool() {
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enums := flagPossibleValues(f)
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if len(enums) > 0 {
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_, _ = buf.WriteString(fmt.Sprintf(" -xa '%s'", strings.Join(enums, " ")))
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} else {
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_, _ = buf.WriteString(" -x")
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}
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}
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if f.Short != 0 {
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_, _ = buf.WriteString(fmt.Sprintf(" -s %c", f.Short))
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}
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_, _ = buf.WriteString(fmt.Sprintf(" -l %s", f.Name))
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_, _ = buf.WriteString(fmt.Sprintf(" -d '%s'", f.Help))
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_, _ = buf.WriteString("\n")
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}
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_, _ = buf.WriteString("\n")
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for _, c := range cmd.Children {
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if c == nil || c.Hidden {
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continue
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}
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f.gen(buf, c)
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}
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}
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