gbkEncode function
Implementation
List<int> gbkEncode(String input) {
var ret = <int>[];
input.codeUnits.forEach((charCode) {
var char = String.fromCharCode(charCode);
var gbkCode = _char_to_gbkCode[char];
if (gbkCode != null) {
ret.add(gbkCode);
} else if (charCode != null) {
ret.add(charCode);
}
});
return ret;
}