phpRawUrlEncode function

String phpRawUrlEncode(String value)

PHP's rawurlencode: every byte of the UTF-8 encoding except A-Z a-z 0-9 - _ . ~ becomes %XX (upper case).

Implementation

String phpRawUrlEncode(String value) {
  final out = StringBuffer();
  for (final byte in utf8.encode(value)) {
    final unreserved =
        (byte >= 0x41 && byte <= 0x5A) ||
        (byte >= 0x61 && byte <= 0x7A) ||
        (byte >= 0x30 && byte <= 0x39) ||
        byte == 0x2D ||
        byte == 0x2E ||
        byte == 0x5F ||
        byte == 0x7E;
    if (unreserved) {
      out.writeCharCode(byte);
    } else {
      out
        ..write('%')
        ..write(byte.toRadixString(16).toUpperCase().padLeft(2, '0'));
    }
  }
  return out.toString();
}