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// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build ignore
// This program generates the table keysymCodePoints from /usr/include/X11/keysymdef.h
package main
import (
"bufio"
"bytes"
"fmt"
"go/format"
"log"
"os"
"regexp"
"strings"
)
func main() {
fh, err := os.Open("/usr/include/X11/keysymdef.h")
if err != nil {
log.Fatalf("opening keysymdef.h: %v", err)
}
defer fh.Close()
seen := make(map[string]struct{})
buf := &bytes.Buffer{}
fmt.Fprintf(buf, `// generated by go generate; DO NOT EDIT.
package x11key
// keysymCodePoints maps xproto.Keysym values to their corresponding unicode code point.
var keysymCodePoints = map[rune]rune{
`)
re := regexp.MustCompile(`^#define (XK_[^ ]*) *0x([[:xdigit:]]+) .*U\+([[:xdigit:]]+) (.+)(?: |\))\*/$`)
s := bufio.NewScanner(fh)
for s.Scan() {
m := re.FindStringSubmatch(strings.TrimSpace(s.Text()))
if m == nil {
continue
}
if _, isSeen := seen[m[2]]; isSeen {
continue
}
seen[m[2]] = struct{}{}
fmt.Fprintf(buf, "0x%s: 0x%s, // %s:\t%s\n", m[2], m[3], m[1], m[4])
}
if err := s.Err(); err != nil {
log.Fatalf("reading keysymdef.h: %v", err)
}
fmt.Fprintf(buf, "}\n")
fmted, err := format.Source(buf.Bytes())
if err != nil {
log.Fatalf("formatting output: %v", err)
}
err = os.WriteFile("table.go", fmted, 0644)
if err != nil {
log.Fatalf("writing table.go: %v", err)
}
}
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