streamHttpRequest: replaced string buffering with chunk_expansion

packages/better_networking/lib/utils/http_response_utils.dart

@@ -51,59 +51,3 @@ Future<http.Response> convertStreamedResponse(
 
   return response;
 }
-
-// Stream<String?> streamTextResponse(
-//   http.StreamedResponse streamedResponse,
-// ) async* {
-//   try {
-//     if (streamedResponse.statusCode != 200) {
-//       final errorText = await streamedResponse.stream.bytesToString();
-//       throw Exception('${streamedResponse.statusCode}\n$errorText');
-//     }
-//     final utf8Stream = streamedResponse.stream.transform(utf8.decoder);
-//     await for (final chunk in utf8Stream) {
-//       yield chunk;
-//     }
-//   } catch (e) {
-//     rethrow;
-//   }
-// }
-
-String getCharset(String contentType) {
-  final match = RegExp(
-    r'charset=([^\s;]+)',
-    caseSensitive: false,
-  ).firstMatch(contentType);
-  return match?.group(1)?.toLowerCase() ?? 'utf-8'; // default to utf-8
-}
-
-String decodeBytes(List<int> bytes, String contentType) {
-  String _decodeUtf16(List<int> bytes, Endian endianness) {
-    final byteData = ByteData.sublistView(Uint8List.fromList(bytes));
-    final codeUnits = <int>[];
-    for (int i = 0; i + 1 < byteData.lengthInBytes; i += 2) {
-      codeUnits.add(byteData.getUint16(i, endianness));
-    }
-    return String.fromCharCodes(codeUnits);
-  }
-
-  final cSet = getCharset(contentType);
-  switch (cSet) {
-    case 'utf-8':
-    case 'utf8':
-      return utf8.decode(bytes, allowMalformed: true);
-    case 'utf-16':
-    case 'utf-16le':
-      return _decodeUtf16(bytes, Endian.little);
-    case 'utf-16be':
-      return _decodeUtf16(bytes, Endian.big);
-    case 'iso-8859-1':
-    case 'latin1':
-      return latin1.decode(bytes);
-    case 'us-ascii':
-    case 'ascii':
-      return ascii.decode(bytes);
-    default:
-      return utf8.decode(bytes, allowMalformed: true); //UTF8
-  }
-}