mirror of
https://github.com/kovidgoyal/kitty
synced 2026-07-09 13:45:26 +02:00
Start work on porting unicode input kitten to Go
This commit is contained in:
Kovid Goyal
@@ -10,6 +10,7 @@ import (
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"kitty/tools/cmd/clipboard"
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"kitty/tools/cmd/edit_in_kitty"
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"kitty/tools/cmd/icat"
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"kitty/tools/cmd/unicode_input"
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"kitty/tools/cmd/update_self"
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"kitty/tools/tui"
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)
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@@ -29,6 +30,8 @@ func KittyToolEntryPoints(root *cli.Command) {
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clipboard.EntryPoint(root)
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// icat
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icat.EntryPoint(root)
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// unicode_input
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unicode_input.EntryPoint(root)
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// __hold_till_enter__
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root.AddSubCommand(&cli.Command{
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Name: "__hold_till_enter__",
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470
tools/cmd/unicode_input/main.go
Normal file
470
tools/cmd/unicode_input/main.go
Normal file
@@ -0,0 +1,470 @@
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// License: GPLv3 Copyright: 2023, Kovid Goyal, <kovid at kovidgoyal.net>
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package unicode_input
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import (
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"fmt"
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"os"
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"path/filepath"
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"strconv"
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"strings"
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"unicode"
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"kitty/tools/cli"
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"kitty/tools/tui"
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"kitty/tools/tui/loop"
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"kitty/tools/tui/readline"
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"kitty/tools/unicode_names"
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"kitty/tools/utils"
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"kitty/tools/utils/style"
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"kitty/tools/wcswidth"
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"golang.org/x/exp/slices"
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)
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var _ = fmt.Print
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const INDEX_CHAR string = "."
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const INDEX_BASE = 36
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const InvalidChar rune = unicode.MaxRune + 1
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const default_set_of_symbols string = `
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‘’“”‹›«»‚„ 😀😛😇😈😉😍😎😮👍👎 —–§¶†‡©®™ →⇒•·°±−×÷¼½½¾
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…µ¢£€¿¡¨´¸ˆ˜ ÀÁÂÃÄÅÆÇÈÉÊË ÌÍÎÏÐÑÒÓÔÕÖØ ŒŠÙÚÛÜÝŸÞßàá âãäåæçèéêëìí
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îïðñòóôõöøœš ùúûüýÿþªºαΩ∞
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`
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var DEFAULT_SET []rune
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var EMOTICONS_SET []rune
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const DEFAULT_MODE string = "HEX"
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func build_sets() {
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DEFAULT_SET = make([]rune, 0, len(default_set_of_symbols))
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for _, ch := range default_set_of_symbols {
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if !unicode.IsSpace(ch) {
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DEFAULT_SET = append(DEFAULT_SET, ch)
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}
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}
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EMOTICONS_SET = make([]rune, 0, 0x1f64f-0x1f600+1)
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for i := 0x1f600; i <= 0x1f64f; i++ {
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DEFAULT_SET = append(DEFAULT_SET, rune(i))
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}
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}
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func codepoint_ok(code rune) bool {
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return !(code <= 32 || code == 127 || (128 <= code && code <= 159) || (0xd800 <= code && code <= 0xdbff) || (0xDC00 <= code && code <= 0xDFFF) || code > unicode.MaxRune)
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}
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func parse_favorites(raw string) (ans []rune) {
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ans = make([]rune, 0, 128)
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for _, line := range utils.Splitlines(raw) {
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line = strings.TrimSpace(line)
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if len(line) == 0 || strings.HasPrefix(line, "#") {
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continue
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}
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idx := strings.Index(line, "#")
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if idx > -1 {
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line = line[:idx]
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}
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code_text, _, _ := strings.Cut(line, " ")
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code, err := strconv.ParseUint(code_text, 16, 32)
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if err == nil && codepoint_ok(rune(code)) {
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ans = append(ans, rune(code))
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}
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}
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return
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}
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func serialize_favorites(favs []rune) string {
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b := strings.Builder{}
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b.Grow(8192)
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b.WriteString(`# Favorite characters for unicode input
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# Enter the hex code for each favorite character on a new line. Blank lines are
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# ignored and anything after a # is considered a comment.
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`)
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for _, ch := range favs {
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b.WriteString(fmt.Sprintf("%x # %s %s", ch, string(ch), unicode_names.NameForCodePoint(ch)))
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}
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return b.String()
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}
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var loaded_favorites []rune
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func favorites_path() string {
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return filepath.Join(utils.ConfigDir(), "unicode-input-favorites.conf")
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}
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func load_favorites(refresh bool) []rune {
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if refresh || loaded_favorites == nil {
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raw, err := os.ReadFile(favorites_path())
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if err == nil {
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loaded_favorites = parse_favorites(utils.UnsafeBytesToString(raw))
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} else {
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loaded_favorites = parse_favorites("")
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}
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}
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return loaded_favorites
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}
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type CachedData struct {
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Recent []rune `json:"recent,omitempty"`
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Mode string `json:"mode,omitempty"`
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}
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var cached_data *CachedData
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type Mode int
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const (
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HEX Mode = iota
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NAME
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EMOTICONS
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FAVORITES
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)
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type ModeData struct {
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mode Mode
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key string
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title string
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}
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var all_modes [4]ModeData
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type checkpoints_key struct {
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mode Mode
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text string
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codepoints []rune
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}
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func (self *checkpoints_key) clear() {
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*self = checkpoints_key{}
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}
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func (self *checkpoints_key) is_equal(other checkpoints_key) bool {
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return self.mode == other.mode && self.text == other.text && slices.Equal(self.codepoints, other.codepoints)
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}
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type handler struct {
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mode Mode
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recent []rune
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current_char rune
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err error
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lp *loop.Loop
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ctx style.Context
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rl *readline.Readline
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choice_line string
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emoji_variation string
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checkpoints_key checkpoints_key
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table table
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current_tab_formatter, tab_bar_formatter, chosen_formatter, chosen_name_formatter, dim_formatter func(...any) string
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}
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func (self *handler) initialize() {
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self.lp.AllowLineWrapping(false)
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self.table.initialize(self.emoji_variation, self.ctx)
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self.lp.SetWindowTitle("Unicode input")
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self.ctx.AllowEscapeCodes = true
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self.current_char = InvalidChar
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self.current_tab_formatter = self.ctx.SprintFunc("reverse=false bold=true")
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self.tab_bar_formatter = self.ctx.SprintFunc("reverse=true")
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self.chosen_formatter = self.ctx.SprintFunc("fg=green")
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self.chosen_name_formatter = self.ctx.SprintFunc("italic=true dim=true")
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self.dim_formatter = self.ctx.SprintFunc("dim=true")
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self.rl = readline.New(self.lp, readline.RlInit{Prompt: "> "})
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self.rl.Start()
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self.draw_screen()
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}
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func (self *handler) finalize() string {
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self.rl.End()
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self.rl.Shutdown()
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return ""
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}
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func (self *handler) resolved_char() string {
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if self.current_char == InvalidChar {
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return ""
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}
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return resolved_char(self.current_char, self.emoji_variation)
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}
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func is_index(word string) bool {
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if !strings.HasSuffix(word, INDEX_CHAR) {
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return false
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}
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word = strings.TrimLeft(word, INDEX_CHAR)
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_, err := strconv.ParseUint(word, 36, 32)
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return err == nil
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}
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func (self *handler) update_codepoints() {
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var codepoints []rune
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var index_word int
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var q checkpoints_key
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q.mode = self.mode
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switch self.mode {
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case HEX:
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codepoints = self.recent
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case EMOTICONS:
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codepoints = EMOTICONS_SET
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case FAVORITES:
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codepoints = load_favorites(false)
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q.codepoints = codepoints
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case NAME:
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q.text = self.rl.AllText()
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if !q.is_equal(self.checkpoints_key) {
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words := strings.Split(q.text, " ")
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words = utils.RemoveAll(words, INDEX_CHAR)
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words = utils.Filter(words, is_index)
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if len(words) > 0 {
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iw := strings.TrimLeft(words[0], INDEX_CHAR)
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words = words[1:]
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n, err := strconv.ParseUint(iw, INDEX_BASE, 32)
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if err == nil {
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index_word = int(n)
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}
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}
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codepoints = unicode_names.CodePointsForQuery(strings.Join(words, " "))
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}
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}
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if !q.is_equal(self.checkpoints_key) {
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self.checkpoints_key = q
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self.table.set_codepoints(codepoints, self.mode, index_word)
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}
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}
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func (self *handler) update_current_char() {
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self.update_codepoints()
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self.current_char = InvalidChar
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text := self.rl.AllText()
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switch self.mode {
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case HEX:
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if strings.HasPrefix(text, INDEX_CHAR) {
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if len(text) > 1 {
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self.current_char = self.table.codepoint_at_hint(text[1:])
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}
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} else if len(text) > 0 {
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code, err := strconv.ParseUint(text, 16, 32)
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if err == nil && code <= unicode.MaxRune {
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self.current_char = rune(code)
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}
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}
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case NAME:
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cc := self.table.current_codepoint()
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if cc > 0 && cc <= unicode.MaxRune {
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self.current_char = rune(cc)
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}
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default:
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if len(text) > 0 {
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self.current_char = self.table.codepoint_at_hint(strings.TrimLeft(text, INDEX_CHAR))
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}
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}
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if !codepoint_ok(self.current_char) {
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self.current_char = InvalidChar
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}
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}
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func (self *handler) update_prompt() {
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self.update_current_char()
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ch := "??"
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color := "red"
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self.choice_line = ""
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if self.current_char != InvalidChar {
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ch, color = self.resolved_char(), "green"
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self.choice_line = fmt.Sprintf(
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"Chosen: %s U+%x %s", self.chosen_formatter(ch), self.current_char,
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self.chosen_name_formatter(unicode_names.NameForCodePoint(self.current_char)))
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}
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prompt := fmt.Sprintf("%s> ", self.ctx.SprintFunc("fg="+color)(ch))
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self.rl.SetPrompt(prompt)
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}
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func (self *handler) draw_title_bar() {
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entries := make([]string, 0, len(all_modes))
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for _, md := range all_modes {
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entry := fmt.Sprintf(" %s (%s) ", md.title, md.key)
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if md.mode == self.mode {
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entry = self.current_tab_formatter(entry)
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}
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entries = append(entries, entry)
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}
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sz, _ := self.lp.ScreenSize()
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text := fmt.Sprintf("Search by:%s", strings.Join(entries, ""))
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extra := int(sz.WidthCells) - wcswidth.Stringwidth(text)
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if extra > 0 {
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text += strings.Repeat(" ", extra)
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}
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self.lp.Println(self.tab_bar_formatter(text))
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}
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func (self *handler) draw_screen() {
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self.lp.StartAtomicUpdate()
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defer self.lp.EndAtomicUpdate()
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self.lp.ClearScreen()
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self.draw_title_bar()
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y := 1
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writeln := func(text ...any) {
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self.lp.Println(text...)
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y += 1
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}
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switch self.mode {
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case NAME:
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writeln("Enter words from the name of the character")
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case HEX:
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writeln("Enter the hex code for the character")
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default:
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writeln("Enter the index for the character you want from the list below")
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}
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self.rl.RedrawNonAtomic()
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self.lp.SaveCursorPosition()
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defer self.lp.RestoreCursorPosition()
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writeln()
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writeln(self.choice_line)
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switch self.mode {
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case HEX:
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writeln(self.dim_formatter(fmt.Sprintf("Type %s followed by the index for the recent entries below", INDEX_CHAR)))
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case NAME:
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writeln(self.dim_formatter(fmt.Sprintf("Use Tab or arrow keys to choose a character. Type space and %s to select by index", INDEX_CHAR)))
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case FAVORITES:
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writeln(self.dim_formatter("Press F12 to edit the list of favorites"))
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}
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sz, _ := self.lp.ScreenSize()
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q := self.table.layout(int(sz.HeightCells)-y, int(sz.WidthCells))
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if q != "" {
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self.lp.QueueWriteString(q)
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}
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}
|
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func (self *handler) on_text(text string, from_key_event, in_bracketed_paste bool) error {
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err := self.rl.OnText(text, from_key_event, in_bracketed_paste)
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if err != nil {
|
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return err
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}
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self.refresh()
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return nil
|
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}
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|
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func (self *handler) on_key_event(event *loop.KeyEvent) (err error) {
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// TODO: Implement rest of this
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err = self.rl.OnKeyEvent(event)
|
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if err != nil {
|
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if err == readline.ErrAcceptInput {
|
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self.refresh()
|
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self.lp.Quit(0)
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return nil
|
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}
|
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return err
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}
|
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if event.Handled {
|
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self.refresh()
|
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}
|
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return
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}
|
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|
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func (self *handler) refresh() {
|
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self.update_prompt()
|
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self.draw_screen()
|
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}
|
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|
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func run_loop(opts *Options) (lp *loop.Loop, err error) {
|
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output := tui.KittenOutputSerializer()
|
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lp, err = loop.New()
|
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if err != nil {
|
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return
|
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}
|
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cv := utils.NewCachedValues("unicode-input", &CachedData{Recent: DEFAULT_SET, Mode: DEFAULT_MODE})
|
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cached_data = cv.Load()
|
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defer cv.Save()
|
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|
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h := handler{recent: cached_data.Recent, lp: lp, emoji_variation: opts.EmojiVariation}
|
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switch cached_data.Mode {
|
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case "HEX":
|
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h.mode = HEX
|
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case "NAME":
|
||||
h.mode = NAME
|
||||
case "EMOTICONS":
|
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h.mode = EMOTICONS
|
||||
case "FAVORITES":
|
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h.mode = FAVORITES
|
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}
|
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all_modes[0] = ModeData{mode: HEX, title: "Code", key: "F1"}
|
||||
all_modes[1] = ModeData{mode: NAME, title: "Name", key: "F2"}
|
||||
all_modes[2] = ModeData{mode: EMOTICONS, title: "Emoticons", key: "F3"}
|
||||
all_modes[3] = ModeData{mode: FAVORITES, title: "Favorites", key: "F4"}
|
||||
|
||||
lp.OnInitialize = func() (string, error) {
|
||||
h.initialize()
|
||||
return "", nil
|
||||
}
|
||||
|
||||
lp.OnResize = func(old_size, new_size loop.ScreenSize) error {
|
||||
h.refresh()
|
||||
return nil
|
||||
}
|
||||
|
||||
lp.OnResumeFromStop = func() error {
|
||||
h.refresh()
|
||||
return nil
|
||||
}
|
||||
|
||||
lp.OnText = h.on_text
|
||||
lp.OnFinalize = h.finalize
|
||||
lp.OnKeyEvent = h.on_key_event
|
||||
|
||||
err = lp.Run()
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
if h.err == nil {
|
||||
switch h.mode {
|
||||
case HEX:
|
||||
cached_data.Mode = "HEX"
|
||||
case NAME:
|
||||
cached_data.Mode = "NAME"
|
||||
case EMOTICONS:
|
||||
cached_data.Mode = "EMOTICONS"
|
||||
case FAVORITES:
|
||||
cached_data.Mode = "FAVORITES"
|
||||
}
|
||||
if h.current_char != InvalidChar {
|
||||
cached_data.Recent = h.recent
|
||||
idx := slices.Index(cached_data.Recent, h.current_char)
|
||||
if idx > -1 {
|
||||
cached_data.Recent = slices.Delete(cached_data.Recent, idx, idx+1)
|
||||
}
|
||||
cached_data.Recent = slices.Insert(cached_data.Recent, 0, h.current_char)[:len(DEFAULT_SET)]
|
||||
ans := h.resolved_char()
|
||||
o, err := output(ans)
|
||||
if err != nil {
|
||||
return lp, err
|
||||
}
|
||||
fmt.Println(o)
|
||||
}
|
||||
}
|
||||
err = h.err
|
||||
return
|
||||
}
|
||||
|
||||
func main(cmd *cli.Command, o *Options, args []string) (rc int, err error) {
|
||||
go unicode_names.Initialize() // start parsing name data in the background
|
||||
build_sets()
|
||||
lp, err := run_loop(o)
|
||||
if err != nil {
|
||||
return 1, err
|
||||
}
|
||||
ds := lp.DeathSignalName()
|
||||
if ds != "" {
|
||||
fmt.Println("Killed by signal: ", ds)
|
||||
lp.KillIfSignalled()
|
||||
return 1, nil
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func EntryPoint(parent *cli.Command) {
|
||||
create_cmd(parent, main)
|
||||
}
|
||||
233
tools/cmd/unicode_input/table.go
Normal file
233
tools/cmd/unicode_input/table.go
Normal file
@@ -0,0 +1,233 @@
|
||||
// License: GPLv3 Copyright: 2023, Kovid Goyal, <kovid at kovidgoyal.net>
|
||||
|
||||
package unicode_input
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"strconv"
|
||||
"strings"
|
||||
|
||||
"kitty/tools/unicode_names"
|
||||
"kitty/tools/utils"
|
||||
"kitty/tools/utils/style"
|
||||
"kitty/tools/wcswidth"
|
||||
)
|
||||
|
||||
var _ = fmt.Print
|
||||
|
||||
func resolved_char(ch rune, emoji_variation string) string {
|
||||
ans := string(ch)
|
||||
if wcswidth.IsEmojiPresentationBase(ch) {
|
||||
switch emoji_variation {
|
||||
case "text":
|
||||
ans += "\ufe0e"
|
||||
case "graphic":
|
||||
ans += "\ufe0f"
|
||||
}
|
||||
}
|
||||
return ans
|
||||
|
||||
}
|
||||
|
||||
func decode_hint(text string) int {
|
||||
x, err := strconv.ParseUint(text, INDEX_BASE, 32)
|
||||
if err != nil {
|
||||
return -1
|
||||
}
|
||||
return int(x)
|
||||
}
|
||||
|
||||
func encode_hint(num int) string {
|
||||
return strconv.FormatUint(uint64(num), INDEX_BASE)
|
||||
}
|
||||
|
||||
func ljust(s string, sz int) string {
|
||||
x := wcswidth.Stringwidth(s)
|
||||
if x < sz {
|
||||
s += strings.Repeat(" ", sz-x)
|
||||
}
|
||||
return s
|
||||
}
|
||||
|
||||
type table struct {
|
||||
emoji_variation string
|
||||
layout_dirty bool
|
||||
last_rows, last_cols int
|
||||
codepoints []rune
|
||||
current_idx, scroll_rows int
|
||||
text string
|
||||
num_cols, num_rows int
|
||||
mode Mode
|
||||
|
||||
green, reversed, not_reversed, intense_gray func(...any) string
|
||||
}
|
||||
|
||||
func (self *table) initialize(emoji_variation string, ctx style.Context) {
|
||||
self.emoji_variation = emoji_variation
|
||||
self.layout_dirty = true
|
||||
self.last_cols, self.last_rows = -1, -1
|
||||
self.green = ctx.SprintFunc("fg=green")
|
||||
self.reversed = ctx.SprintFunc("reverse=true")
|
||||
self.not_reversed = ctx.SprintFunc("reverse=false")
|
||||
self.intense_gray = ctx.SprintFunc("fg=intense-gray")
|
||||
}
|
||||
|
||||
func (self *table) current_codepoint() rune {
|
||||
if len(self.codepoints) > 0 {
|
||||
return self.codepoints[self.current_idx]
|
||||
}
|
||||
return InvalidChar
|
||||
}
|
||||
|
||||
func (self *table) set_codepoints(codepoints []rune, mode Mode, current_idx int) {
|
||||
self.codepoints = codepoints
|
||||
self.mode = mode
|
||||
self.layout_dirty = true
|
||||
if self.current_idx >= len(self.codepoints) {
|
||||
self.current_idx = 0
|
||||
}
|
||||
self.scroll_rows = 0
|
||||
}
|
||||
|
||||
func (self *table) codepoint_at_hint(hint string) rune {
|
||||
idx := decode_hint(hint)
|
||||
if idx >= 0 && idx < len(self.codepoints) {
|
||||
return self.codepoints[idx]
|
||||
}
|
||||
return InvalidChar
|
||||
}
|
||||
|
||||
type cell_data struct {
|
||||
idx, ch, desc string
|
||||
}
|
||||
|
||||
func (self *table) layout(rows, cols int) string {
|
||||
if !self.layout_dirty && self.last_cols == cols && self.last_rows == rows {
|
||||
return self.text
|
||||
}
|
||||
self.last_cols, self.last_rows = cols, rows
|
||||
self.layout_dirty = false
|
||||
var as_parts func(int, rune) cell_data
|
||||
var cell func(int, cell_data)
|
||||
var idx_size, space_for_desc int
|
||||
output := strings.Builder{}
|
||||
output.Grow(4096)
|
||||
switch self.mode {
|
||||
case NAME:
|
||||
as_parts = func(i int, codepoint rune) cell_data {
|
||||
return cell_data{idx: ljust(encode_hint(i), idx_size), ch: resolved_char(codepoint, self.emoji_variation), desc: unicode_names.NameForCodePoint(codepoint)}
|
||||
}
|
||||
|
||||
cell = func(i int, cd cell_data) {
|
||||
is_current := i == self.current_idx
|
||||
text := self.green(cd.idx) + " \x1b[49m" + cd.ch + " "
|
||||
w := wcswidth.Stringwidth(cd.ch)
|
||||
if w < 2 {
|
||||
text += strings.Repeat(" ", (2 - w))
|
||||
}
|
||||
if len(cd.desc) > space_for_desc {
|
||||
text += cd.desc[:space_for_desc-1] + "…"
|
||||
} else {
|
||||
text += cd.desc
|
||||
extra := space_for_desc - len(cd.desc)
|
||||
if extra > 0 {
|
||||
text += strings.Repeat(" ", extra)
|
||||
}
|
||||
}
|
||||
if is_current {
|
||||
text = self.reversed(text)
|
||||
} else {
|
||||
text = self.not_reversed(text)
|
||||
}
|
||||
output.WriteString(text)
|
||||
}
|
||||
default:
|
||||
as_parts = func(i int, codepoint rune) cell_data {
|
||||
return cell_data{idx: ljust(encode_hint(i), idx_size), ch: resolved_char(codepoint, self.emoji_variation)}
|
||||
}
|
||||
|
||||
cell = func(i int, cd cell_data) {
|
||||
output.WriteString(self.green(cd.idx))
|
||||
output.WriteString(" ")
|
||||
output.WriteString(self.intense_gray(cd.ch))
|
||||
w := wcswidth.Stringwidth(cd.ch)
|
||||
if w < 2 {
|
||||
output.WriteString(strings.Repeat(" ", (2 - w)))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
num := len(self.codepoints)
|
||||
if num < 1 {
|
||||
self.text = ""
|
||||
self.num_cols = 0
|
||||
self.num_rows = 0
|
||||
return self.text
|
||||
}
|
||||
idx_size = len(encode_hint(num - 1))
|
||||
|
||||
parts := make([]cell_data, len(self.codepoints))
|
||||
for i, ch := range self.codepoints {
|
||||
parts[i] = as_parts(i, ch)
|
||||
}
|
||||
longest := 0
|
||||
switch self.mode {
|
||||
case NAME:
|
||||
for _, p := range parts {
|
||||
longest = utils.Max(longest, idx_size+2+len(p.desc)+2)
|
||||
}
|
||||
default:
|
||||
longest = idx_size + 3
|
||||
}
|
||||
col_width := longest + 2
|
||||
col_width = utils.Min(col_width, 40)
|
||||
space_for_desc = col_width - 2 - idx_size - 4
|
||||
self.num_cols = utils.Max(cols/col_width, 1)
|
||||
self.num_rows = rows
|
||||
rows_left := rows
|
||||
skip_scroll := self.scroll_rows * self.num_cols
|
||||
|
||||
for i, cd := range parts {
|
||||
if skip_scroll > 0 {
|
||||
skip_scroll -= 1
|
||||
continue
|
||||
}
|
||||
cell(i, cd)
|
||||
output.WriteString(" ")
|
||||
if i > 0 && (i+1)%self.num_cols == 0 {
|
||||
rows_left -= 1
|
||||
if rows_left == 0 {
|
||||
break
|
||||
}
|
||||
output.WriteString("\r\n")
|
||||
}
|
||||
}
|
||||
|
||||
self.text = output.String()
|
||||
return self.text
|
||||
}
|
||||
|
||||
func (self *table) move_current(rows, cols int) {
|
||||
if len(self.codepoints) == 0 {
|
||||
return
|
||||
}
|
||||
if cols != 0 {
|
||||
self.current_idx = (self.current_idx + len(self.codepoints) + cols) % len(self.codepoints)
|
||||
self.layout_dirty = true
|
||||
}
|
||||
if rows != 0 {
|
||||
amt := rows * self.num_cols
|
||||
self.current_idx += amt
|
||||
self.current_idx = utils.Max(0, utils.Min(self.current_idx, len(self.codepoints)-1))
|
||||
self.layout_dirty = true
|
||||
}
|
||||
first_visible := self.scroll_rows * self.num_cols
|
||||
last_visible := first_visible + ((self.num_cols * self.num_rows) - 1)
|
||||
scroll_amount := self.num_rows
|
||||
if self.current_idx < first_visible {
|
||||
self.scroll_rows = utils.Max(self.scroll_rows-scroll_amount, 0)
|
||||
}
|
||||
if self.current_idx > last_visible {
|
||||
self.scroll_rows += scroll_amount
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user