| package ishell |
| |
| import ( |
| "strings" |
| |
| "github.com/flynn-archive/go-shlex" |
| ) |
| |
| type iCompleter struct { |
| cmd *Cmd |
| disabled func() bool |
| } |
| |
| func (ic iCompleter) Do(line []rune, pos int) (newLine [][]rune, length int) { |
| if ic.disabled != nil && ic.disabled() { |
| return nil, len(line) |
| } |
| var words []string |
| if w, err := shlex.Split(string(line)); err == nil { |
| words = w |
| } else { |
| // fall back |
| words = strings.Fields(string(line)) |
| } |
| |
| var cWords []string |
| prefix := "" |
| if len(words) > 0 && line[pos-1] != ' ' { |
| prefix = words[len(words)-1] |
| cWords = ic.getWords(words[:len(words)-1]) |
| } else { |
| cWords = ic.getWords(words) |
| } |
| |
| var suggestions [][]rune |
| for _, w := range cWords { |
| if strings.HasPrefix(w, prefix) { |
| suggestions = append(suggestions, []rune(strings.TrimPrefix(w, prefix))) |
| } |
| } |
| if len(suggestions) == 1 && prefix != "" && string(suggestions[0]) == "" { |
| suggestions = [][]rune{[]rune(" ")} |
| } |
| return suggestions, len(prefix) |
| } |
| |
| func (ic iCompleter) getWords(w []string) (s []string) { |
| cmd, args := ic.cmd.FindCmd(w) |
| if cmd == nil { |
| cmd, args = ic.cmd, w |
| } |
| if cmd.Completer != nil { |
| return cmd.Completer(args) |
| } |
| for k := range cmd.children { |
| s = append(s, k) |
| } |
| return |
| } |
