Remove deprecated APIs.

lib/src/base64/decoder.dart

-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-import 'dart:convert';
-import 'dart:typed_data';
-
-import 'package:charcode/ascii.dart';
-
-import 'decoder_sink.dart';
-
-/// A mapping from ASCII character codes to their corresponding Base64 values.
-///
-/// Characters with a value of `null` can't be decoded directly. This includes
-/// special values like CR, LF, `=`, and `%`.
-const _decodeTable = const [
-  null, null, null, null, null, null, null, null, null, null, null, null, null,
-  null, null, null, null, null, null, null, null, null, null, null, null, null,
-  null, null, null, null, null, null, null, null, null, null, null, null, null,
-  null, null, null, null, 62, null, 62, null, 63, 52, 53, 54, 55, 56, 57, 58,
-  59, 60, 61, null, null, null, null, null, null, null, 0, 1, 2, 3, 4, 5, 6, 7,
-  8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, null,
-  null, null, null, 63, null, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37,
-  38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51
-];
-
-/// This is deprecated.
-///
-/// Use the `Base64Decoder` class in `dart:convert` instead.
-@Deprecated("Will be removed in crypto 1.0.0.")
-class Base64Decoder extends Converter<String, List<int>> {
-  const Base64Decoder();
-
-  List<int> convert(String input) {
-    if (input.length == 0) return new Uint8List(0);
-
-    // The length of the actual data sections in the input (not CRLFs).
-    var dataLength = 0;
-
-    // Count the data, and fail for invalid characters.
-    for (var i = 0; i < input.length; i++) {
-      var codeUnit = input.codeUnitAt(i);
-
-      if (codeUnit == $cr || codeUnit == $lf) continue;
-
-      if (codeUnit == $percent &&
-          i < input.length - 2 &&
-          input.codeUnitAt(i + 1) == $3 &&
-          input.codeUnitAt(i + 2) == $D) {
-        dataLength++;
-        i += 2;
-        continue;
-      }
-
-      if (codeUnit != $equal &&
-          (codeUnit >= _decodeTable.length || _decodeTable[codeUnit] == null)) {
-        throw new FormatException('Invalid character', input, i);
-      }
-
-      dataLength++;
-    }
-
-    if (dataLength % 4 != 0) {
-      throw new FormatException(
-          'Base64 input must encode a multiple of 4 bytes.',
-          input,
-          dataLength);
-    }
-
-    // Count the trailing pad characters.
-    var padLength = 0;
-    for (var i = input.length - 1; i >= 0; i--) {
-      var codeUnit = input.codeUnitAt(i);
-      if (codeUnit == $D &&
-          i >= 2 &&
-          input.codeUnitAt(i - 2) == $percent &&
-          input.codeUnitAt(i - 1) == $3) {
-        padLength++;
-        i -= 2;
-      } else if (codeUnit == $equal) {
-        padLength++;
-      } else if (codeUnit != $cr && codeUnit != $lf) {
-        break;
-      }
-    }
-    var outputLength = ((dataLength * 6) >> 3) - padLength;
-    var out = new Uint8List(outputLength);
-
-    var inputIndex = 0;
-    var outputIndex = 0;
-    while (outputIndex < outputLength) {
-      // Accumulate four 6-bit Base64 characters into a 32-bit chunk.
-      var chunk = 0;
-      for (var i = 0; i < 4; i++) {
-        var codeUnit = input.codeUnitAt(inputIndex++);
-
-        if (codeUnit == $equal || codeUnit == $percent) {
-          // We've reached the end of the source. Pad out the rest of the chunk
-          // with zeroes.
-          chunk <<= (4 - i) * 6;
-          break;
-        }
-
-        if (codeUnit == $cr || codeUnit == $lf) {
-          i--;
-        } else {
-          chunk = (chunk << 6) | _decodeTable[codeUnit];
-        }
-      }
-
-      // Emit 8-bit pieces of the chunk to the output buffer.
-      out[outputIndex++] = chunk >> 16;
-      if (outputIndex >= outputLength) break;
-
-      out[outputIndex++] = (chunk >> 8) & 0xFF;
-      if (outputIndex >= outputLength) break;
-
-      out[outputIndex++] = chunk & 0xFF;
-    }
-
-    return out;
-  }
-
-  Base64DecoderSink startChunkedConversion(Sink<List<int>> sink) {
-    if (sink is! ByteConversionSink) sink = new ByteConversionSink.from(sink);
-    return new Base64DecoderSink(sink);
-  }
-}