func buildFullwidthMap() map[rune]bool {
m := make(map[rune]bool)
scanner := lib.NewEastAsianWidthTextScanner()
for {
lo, hi, category := lib.NextEntry(scanner)
if category == "" {
break
}
if !lib.IsFullwidthCategory(category) {
continue
}
if hi == 0 {
m[lo] = true
} else {
for r := lo; r <= hi; r++ {
m[r] = true
}
}
}
if err := scanner.Err(); err != nil {
panic(err)
}
return m
}
// This program generates eastasianwidth/table.go.
func main() {
fullwidthTable := &unicode.RangeTable{}
scanner := lib.NewEastAsianWidthTextScanner()
for {
lo, hi, category := lib.NextEntry(scanner)
if category == "" {
break
}
if !lib.IsFullwidthCategory(category) {
continue
}
if hi == 0 {
lib.AppendRune(fullwidthTable, lo)
} else {
lib.AppendRange(fullwidthTable, lo, hi)
}
}
if err := scanner.Err(); err != nil {
panic(err)
}
file, err := os.Create("../table.go")
if err != nil {
panic(err)
}
defer file.Close()
out := bufio.NewWriter(file)
fmt.Fprintf(out, format, "Fullwidth",
lib.String(fullwidthTable))
out.Flush()
}