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// License: GPLv3 Copyright: 2022, Kovid Goyal, <kovid at kovidgoyal.net>
package cli
import (
"fmt"
"os"
"strings"
)
var _ = fmt.Print
var _ = os.Getenv
func (self *Completions) add_options_group(options []*Option, word string) {
group := self.AddMatchGroup("Options")
if strings.HasPrefix(word, "--") {
if word == "--" {
group.Matches = append(group.Matches, &Match{Word: "--", Description: "End of options"})
}
for _, opt := range options {
for _, q := range opt.Aliases {
if strings.HasPrefix(q.String(), word) {
group.Matches = append(group.Matches, &Match{Word: q.String(), Description: opt.Help})
break
}
}
}
} else {
if word == "-" {
group.Matches = append(group.Matches, &Match{Word: "--", Description: "End of options"})
for _, opt := range options {
has_single_letter_alias := false
for _, q := range opt.Aliases {
if q.IsShort {
group.AddMatch("-"+q.NameWithoutHyphens, opt.Help)
has_single_letter_alias = true
break
}
}
if !has_single_letter_alias {
for _, q := range opt.Aliases {
if !q.IsShort {
group.AddMatch(q.String(), opt.Help)
break
}
}
}
}
} else {
runes := []rune(word)
last_letter := string(runes[len(runes)-1])
for _, opt := range options {
for _, q := range opt.Aliases {
if q.IsShort && q.NameWithoutHyphens == last_letter {
group.AddMatch(word, opt.Help)
return
}
}
}
}
}
}
func (self *Command) sub_command_allowed_at(completions *Completions, arg_num int) bool {
if self.SubCommandMustBeFirst {
return arg_num == 1 && completions.CurrentWordIdxInParent == 1
}
return arg_num == 1
}
func complete_word(word string, completions *Completions, only_args_allowed bool, expecting_arg_for *Option, arg_num int) {
cmd := completions.CurrentCmd
if expecting_arg_for != nil {
if expecting_arg_for.Completer != nil {
expecting_arg_for.Completer(completions, word, arg_num)
}
return
}
if !only_args_allowed && strings.HasPrefix(word, "-") {
if strings.HasPrefix(word, "--") && strings.Contains(word, "=") {
idx := strings.Index(word, "=")
option := cmd.FindOption(word[:idx])
if option != nil {
if option.Completer != nil {
option.Completer(completions, word[idx+1:], arg_num)
completions.AddPrefixToAllMatches(word[:idx+1])
}
}
} else {
completions.add_options_group(cmd.AllOptions(), word)
}
return
}
if cmd.HasVisibleSubCommands() && cmd.sub_command_allowed_at(completions, arg_num) {
for _, cg := range cmd.SubCommandGroups {
group := completions.AddMatchGroup(cg.Title)
if group.Title == "" {
group.Title = "Sub-commands"
}
for _, sc := range cg.SubCommands {
if !sc.Hidden && strings.HasPrefix(sc.Name, word) {
t := sc.ShortDescription
if t == "" {
t = sc.HelpText
}
group.AddMatch(sc.Name, t)
}
}
}
if cmd.SubCommandIsOptional && cmd.ArgCompleter != nil {
cmd.ArgCompleter(completions, word, arg_num)
}
return
}
if cmd.ArgCompleter != nil {
cmd.ArgCompleter(completions, word, arg_num)
}
}
func completion_parse_args(cmd *Command, words []string, completions *Completions) {
completions.CurrentCmd = cmd
if len(words) == 0 {
complete_word("", completions, false, nil, 0)
return
}
completions.AllWords = words
var expecting_arg_for *Option
only_args_allowed := false
arg_num := 0
for i, word := range words {
cmd = completions.CurrentCmd
completions.CurrentWordIdx = i
completions.CurrentWordIdxInParent++
is_last_word := i == len(words)-1
is_option_equal := completions.split_on_equals && word == "=" && expecting_arg_for != nil
if only_args_allowed || (expecting_arg_for == nil && !strings.HasPrefix(word, "-")) {
if !is_option_equal {
arg_num++
}
if arg_num == 1 {
cmd.IndexOfFirstArg = completions.CurrentWordIdx
}
}
if is_last_word {
if is_option_equal {
word = ""
}
complete_word(word, completions, only_args_allowed, expecting_arg_for, arg_num)
} else {
if expecting_arg_for != nil {
if is_option_equal {
continue
}
expecting_arg_for = nil
continue
}
if word == "--" {
only_args_allowed = true
continue
}
if !only_args_allowed && strings.HasPrefix(word, "-") {
if !strings.Contains(word, "=") {
option := cmd.FindOption(word)
if option != nil && option.needs_argument() {
expecting_arg_for = option
}
}
continue
}
if cmd.HasVisibleSubCommands() && cmd.sub_command_allowed_at(completions, arg_num) {
sc := cmd.FindSubCommand(word)
if sc == nil {
only_args_allowed = true
continue
}
completions.CurrentCmd = sc
cmd = sc
arg_num = 0
completions.CurrentWordIdxInParent = 0
only_args_allowed = cmd.OnlyArgsAllowed
if cmd.ParseArgsForCompletion != nil {
cmd.ParseArgsForCompletion(cmd, words[i+1:], completions)
return
}
} else if cmd.StopCompletingAtArg > 0 && arg_num >= cmd.StopCompletingAtArg {
return
} else {
only_args_allowed = true
continue
}
}
}
}
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