mirror of
https://github.com/kovidgoyal/kitty.git
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312 lines
6.6 KiB
Go
312 lines
6.6 KiB
Go
// License: GPLv3 Copyright: 2023, Kovid Goyal, <kovid at kovidgoyal.net>
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package config
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import (
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"fmt"
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"kitty/tools/tui/loop"
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"kitty/tools/utils"
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"regexp"
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"slices"
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"strconv"
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"strings"
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"sync"
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)
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var _ = fmt.Print
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func ParseStrDict(val, record_sep, field_sep string) (map[string]string, error) {
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ans := make(map[string]string)
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for _, record := range strings.Split(val, record_sep) {
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key, val, found := strings.Cut(record, field_sep)
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if found {
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ans[key] = val
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}
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}
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return ans, nil
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}
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func PositiveFloat(val string) (ans float64, err error) {
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ans, err = strconv.ParseFloat(val, 64)
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if err == nil {
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ans = max(0, ans)
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}
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return
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}
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func UnitFloat(val string) (ans float64, err error) {
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ans, err = strconv.ParseFloat(val, 64)
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if err == nil {
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ans = max(0, min(ans, 1))
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}
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return
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}
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func StringLiteral(val string) (string, error) {
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ans := strings.Builder{}
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ans.Grow(len(val))
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var buf [8]rune
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bufcount := 0
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buflimit := 0
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var prefix rune
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type State int
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const (
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normal State = iota
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backslash
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octal
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hex
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)
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var state State
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decode := func(base int) {
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text := string(buf[:bufcount])
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num, _ := strconv.ParseUint(text, base, 32)
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ans.WriteRune(rune(num))
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state = normal
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bufcount = 0
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buflimit = 0
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prefix = 0
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}
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write_invalid_buf := func() {
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ans.WriteByte('\\')
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ans.WriteRune(prefix)
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for _, r := range buf[:bufcount] {
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ans.WriteRune(r)
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}
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state = normal
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bufcount = 0
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buflimit = 0
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prefix = 0
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}
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var dispatch_ch_recurse func(rune)
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dispatch_ch := func(ch rune) {
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switch state {
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case normal:
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switch ch {
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case '\\':
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state = backslash
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default:
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ans.WriteRune(ch)
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}
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case octal:
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switch ch {
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case '0', '1', '2', '3', '4', '5', '6', '7':
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if bufcount >= buflimit {
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decode(8)
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dispatch_ch_recurse(ch)
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} else {
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buf[bufcount] = ch
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bufcount++
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}
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default:
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decode(8)
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dispatch_ch_recurse(ch)
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}
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case hex:
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switch ch {
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case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'A', 'b', 'B', 'c', 'C', 'd', 'D', 'e', 'E', 'f', 'F':
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buf[bufcount] = ch
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bufcount++
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if bufcount >= buflimit {
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decode(16)
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}
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default:
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write_invalid_buf()
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dispatch_ch_recurse(ch)
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}
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case backslash:
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switch ch {
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case '\n':
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case '\\':
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ans.WriteRune('\\')
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state = normal
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case '\'', '"':
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ans.WriteRune(ch)
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state = normal
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case 'a':
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ans.WriteRune('\a')
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state = normal
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case 'b':
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ans.WriteRune('\b')
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state = normal
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case 'f':
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ans.WriteRune('\f')
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state = normal
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case 'n':
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ans.WriteRune('\n')
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state = normal
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case 'r':
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ans.WriteRune('\r')
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state = normal
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case 't':
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ans.WriteRune('\t')
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state = normal
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case 'v':
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ans.WriteRune('\v')
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state = normal
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case '0', '1', '2', '3', '4', '5', '6', '7':
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buf[0] = ch
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bufcount = 1
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buflimit = 3
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state = octal
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case 'x':
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bufcount = 0
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buflimit = 2
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state = hex
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prefix = ch
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case 'u':
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bufcount = 0
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buflimit = 4
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state = hex
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prefix = ch
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case 'U':
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bufcount = 0
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buflimit = 8
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state = hex
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prefix = ch
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default:
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ans.WriteByte('\\')
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ans.WriteRune(ch)
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state = normal
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}
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}
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}
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dispatch_ch_recurse = dispatch_ch
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for _, ch := range val {
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dispatch_ch(ch)
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}
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switch state {
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case octal:
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decode(8)
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case hex:
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write_invalid_buf()
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case backslash:
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ans.WriteRune('\\')
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}
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return ans.String(), nil
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}
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var ModMap = sync.OnceValue(func() map[string]string {
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return map[string]string{
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"shift": "shift",
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"⇧": "shift",
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"alt": "alt",
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"option": "alt",
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"opt": "alt",
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"⌥": "alt",
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"super": "super",
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"command": "super",
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"cmd": "super",
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"⌘": "super",
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"control": "ctrl",
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"ctrl": "ctrl",
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"⌃": "ctrl",
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"hyper": "hyper",
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"meta": "meta",
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"num_lock": "num_lock",
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"caps_lock": "caps_lock",
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}
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})
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var ShortcutSpecPat = sync.OnceValue(func() *regexp.Regexp {
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return regexp.MustCompile(`([^+])>`)
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})
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func NormalizeShortcut(spec string) string {
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parts := strings.Split(strings.ToLower(spec), "+")
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key := parts[len(parts)-1]
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if len(parts) == 1 {
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return key
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}
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mods := parts[:len(parts)-1]
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mmap := ModMap()
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mods = utils.Map(func(x string) string {
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ans := mmap[x]
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if ans == "" {
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ans = x
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}
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return ans
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}, mods)
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slices.Sort(mods)
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return strings.Join(mods, "+") + "+" + key
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}
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func NormalizeShortcuts(spec string) []string {
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if strings.HasSuffix(spec, "+") {
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spec = spec[:len(spec)-1] + "plus"
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}
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spec = strings.ReplaceAll(spec, "++", "+plus")
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spec = ShortcutSpecPat().ReplaceAllString(spec, "$1\x00")
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return utils.Map(NormalizeShortcut, strings.Split(spec, "\x00"))
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}
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type KeyAction struct {
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Normalized_keys []string
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Name string
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Args string
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}
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func (self *KeyAction) String() string {
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return fmt.Sprintf("map %#v %#v %#v\n", strings.Join(self.Normalized_keys, ">"), self.Name, self.Args)
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}
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func ParseMap(val string) (*KeyAction, error) {
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spec, action, found := strings.Cut(val, " ")
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if !found {
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return nil, fmt.Errorf("No action specified for shortcut %s", val)
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}
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action = strings.TrimSpace(action)
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action_name, action_args, _ := strings.Cut(action, " ")
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action_args = strings.TrimSpace(action_args)
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return &KeyAction{Name: action_name, Args: action_args, Normalized_keys: NormalizeShortcuts(spec)}, nil
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}
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type ShortcutTracker struct {
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partial_matches []*KeyAction
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partial_num_consumed int
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}
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func (self *ShortcutTracker) Match(ev *loop.KeyEvent, all_actions []*KeyAction) *KeyAction {
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if self.partial_num_consumed > 0 {
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ev.Handled = true
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self.partial_matches = utils.Filter(self.partial_matches, func(ac *KeyAction) bool {
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return self.partial_num_consumed < len(ac.Normalized_keys) && ev.MatchesPressOrRepeat(ac.Normalized_keys[self.partial_num_consumed])
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})
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if len(self.partial_matches) == 0 {
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self.partial_num_consumed = 0
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return nil
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}
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} else {
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self.partial_matches = utils.Filter(all_actions, func(ac *KeyAction) bool {
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return ev.MatchesPressOrRepeat(ac.Normalized_keys[0])
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})
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if len(self.partial_matches) == 0 {
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return nil
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}
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ev.Handled = true
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}
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self.partial_num_consumed++
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for _, x := range self.partial_matches {
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if self.partial_num_consumed >= len(x.Normalized_keys) {
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self.partial_num_consumed = 0
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return x
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}
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}
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return nil
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}
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func ResolveShortcuts(actions []*KeyAction) []*KeyAction {
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action_map := make(map[string]*KeyAction, len(actions))
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for _, ac := range actions {
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key := strings.Join(ac.Normalized_keys, "\x00")
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if ac.Name == "no_op" || ac.Name == "no-op" {
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delete(action_map, key)
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} else {
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action_map[key] = ac
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}
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}
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return utils.Values(action_map)
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}
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