94 lines
2.1 KiB
Go
94 lines
2.1 KiB
Go
// License: GPLv3 Copyright: 2022, Kovid Goyal, <kovid at kovidgoyal.net>
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package completion
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type Match struct {
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Word string `json:"word,omitempty"`
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FullForm string `json:"full_form,omitempty"`
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Description string `json:"description,omitempty"`
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}
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type MatchGroup struct {
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Title string `json:"title,omitempty"`
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NoTrailingSpace bool `json:"no_trailing_space,omitempty"`
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IsFiles bool `json:"is_files,omitempty"`
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Matches []*Match `json:"matches,omitempty"`
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WordPrefix string `json:"word_prefix,omitempty"`
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}
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type Completions struct {
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Groups []*MatchGroup `json:"groups,omitempty"`
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WordPrefix string `json:"word_prefix,omitempty"`
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current_cmd *Command
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}
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type completion_func func(completions *Completions, partial_word string, arg_num int)
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type Option struct {
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Name string
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Aliases []string
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Description string
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Has_following_arg bool
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Completion_for_arg completion_func
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}
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type CommandGroup struct {
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Title string
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Commands []*Command
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}
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type Command struct {
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Name string
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Description string
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Options []*Option
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Groups []*CommandGroup
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Completion_for_arg completion_func
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Stop_processing_at_arg int
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}
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func (self *Command) add_command(name string) *Command {
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ans := Command{Name: name}
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ans.Options = make([]*Option, 0, 8)
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ans.Groups = make([]*CommandGroup, 0, 2)
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return &ans
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}
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func (self *Command) find_subcommand(is_ok func(cmd *Command) bool) *Command {
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for _, g := range self.Groups {
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for _, q := range g.Commands {
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if is_ok(q) {
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return q
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}
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}
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}
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return nil
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}
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func (self *Command) find_subcommand_with_name(name string) *Command {
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return self.find_subcommand(func(cmd *Command) bool { return cmd.Name == name })
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}
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func (self *Command) has_subcommands() bool {
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for _, g := range self.Groups {
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if len(g.Commands) > 0 {
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return true
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}
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}
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return false
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}
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func (self *Command) GetCompletions(argv []string) *Completions {
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ans := Completions{Groups: make([]*MatchGroup, 0, 4)}
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if len(argv) > 0 {
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exe := argv[0]
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cmd := self.find_subcommand_with_name(exe)
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if cmd != nil {
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cmd.parse_args(argv[1:], &ans)
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}
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}
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return &ans
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}
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