encodeUtf32le function
Produce a list of UTF-32LE encoded bytes. By default, this method produces UTF-32BE bytes with no BOM.
Implementation
List<int?> encodeUtf32le(String str, [bool writeBOM = false]) {
var utf32CodeUnits = stringToCodepoints(str);
var encoding = <int?>[]..length =
4 * utf32CodeUnits.length + (writeBOM ? 4 : 0);
var i = 0;
if (writeBOM) {
encoding[i++] = UNICODE_UTF_BOM_LO;
encoding[i++] = UNICODE_UTF_BOM_HI;
encoding[i++] = 0;
encoding[i++] = 0;
}
for (var unit in utf32CodeUnits) {
encoding[i++] = unit! & UNICODE_BYTE_ZERO_MASK;
encoding[i++] = (unit >> 8) & UNICODE_BYTE_ZERO_MASK;
encoding[i++] = (unit >> 16) & UNICODE_BYTE_ZERO_MASK;
encoding[i++] = (unit >> 24) & UNICODE_BYTE_ZERO_MASK;
}
return encoding;
}