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Unified Diff: pkg/dev_compiler/tool/input_sdk/lib/convert/latin1.dart

Issue 2698353003: unfork DDC's copy of most SDK libraries (Closed)
Patch Set: revert core_patch Created 3 years, 10 months ago
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Index: pkg/dev_compiler/tool/input_sdk/lib/convert/latin1.dart
diff --git a/pkg/dev_compiler/tool/input_sdk/lib/convert/latin1.dart b/pkg/dev_compiler/tool/input_sdk/lib/convert/latin1.dart
deleted file mode 100644
index 1d8546d189b4b052a48c77586a97f2d3f047ad4e..0000000000000000000000000000000000000000
--- a/pkg/dev_compiler/tool/input_sdk/lib/convert/latin1.dart
+++ /dev/null
@@ -1,194 +0,0 @@
-// Copyright (c) 2013, 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.
-
-part of dart.convert;
-
-/**
- * An instance of the default implementation of the [Latin1Codec].
- *
- * This instance provides a convenient access to the most common ISO Latin 1
- * use cases.
- *
- * Examples:
- *
- * var encoded = LATIN1.encode("blåbærgrød");
- * var decoded = LATIN1.decode([0x62, 0x6c, 0xe5, 0x62, 0xe6,
- * 0x72, 0x67, 0x72, 0xf8, 0x64]);
- */
-const Latin1Codec LATIN1 = const Latin1Codec();
-
-const int _LATIN1_MASK = 0xFF;
-
-/**
- * A [LatinCodec] encodes strings to ISO Latin-1 (aka ISO-8859-1) bytes
- * and decodes Latin-1 bytes to strings.
- */
-class Latin1Codec extends Encoding {
- final bool _allowInvalid;
- /**
- * Instantiates a new [Latin1Codec].
- *
- * If [allowInvalid] is true, the [decode] method and the converter
- * returned by [decoder] will default to allowing invalid values. Invalid
- * values are decoded into the Unicode Replacement character (U+FFFD).
- * Calls to the [decode] method can override this default.
- *
- * Encoders will not accept invalid (non Latin-1) characters.
- */
- const Latin1Codec({bool allowInvalid: false}) : _allowInvalid = allowInvalid;
-
- String get name => "iso-8859-1";
-
- /**
- * Decodes the Latin-1 [bytes] (a list of unsigned 8-bit integers) to the
- * corresponding string.
- *
- * If [bytes] contains values that are not in the range 0 .. 255, the decoder
- * will eventually throw a [FormatException].
- *
- * If [allowInvalid] is not provided, it defaults to the value used to create
- * this [Latin1Codec].
- */
- String decode(List<int> bytes, { bool allowInvalid }) {
- if (allowInvalid == null) allowInvalid = _allowInvalid;
- if (allowInvalid) {
- return const Latin1Decoder(allowInvalid: true).convert(bytes);
- } else {
- return const Latin1Decoder(allowInvalid: false).convert(bytes);
- }
- }
-
- Latin1Encoder get encoder => const Latin1Encoder();
-
- Latin1Decoder get decoder =>
- _allowInvalid ? const Latin1Decoder(allowInvalid: true)
- : const Latin1Decoder(allowInvalid: false);
-}
-
-/**
- * This class converts strings of only ISO Latin-1 characters to bytes.
- */
-class Latin1Encoder extends _UnicodeSubsetEncoder {
- const Latin1Encoder() : super(_LATIN1_MASK);
-}
-
-/**
- * This class converts Latin-1 bytes (lists of unsigned 8-bit integers)
- * to a string.
- */
-class Latin1Decoder extends _UnicodeSubsetDecoder {
- /**
- * Instantiates a new [Latin1Decoder].
- *
- * The optional [allowInvalid] argument defines how [convert] deals
- * with invalid bytes.
- *
- * If it is `true`, [convert] replaces invalid bytes with the Unicode
- * Replacement character `U+FFFD` (�).
- * Otherwise it throws a [FormatException].
- */
- const Latin1Decoder({ bool allowInvalid: false })
- : super(allowInvalid, _LATIN1_MASK);
-
- /**
- * Starts a chunked conversion.
- *
- * The converter works more efficiently if the given [sink] is a
- * [StringConversionSink].
- */
- ByteConversionSink startChunkedConversion(Sink<String> sink) {
- StringConversionSink stringSink;
- if (sink is StringConversionSink) {
- stringSink = sink;
- } else {
- stringSink = new StringConversionSink.from(sink);
- }
- // TODO(lrn): Use stringSink.asUtf16Sink() if it becomes available.
- if (!_allowInvalid) return new _Latin1DecoderSink(stringSink);
- return new _Latin1AllowInvalidDecoderSink(stringSink);
- }
-}
-
-class _Latin1DecoderSink extends ByteConversionSinkBase {
- StringConversionSink _sink;
- _Latin1DecoderSink(this._sink);
-
- void close() {
- _sink.close();
- _sink = null;
- }
-
- void add(List<int> source) {
- addSlice(source, 0, source.length, false);
- }
-
- void _addSliceToSink(List<int> source, int start, int end, bool isLast) {
- // If _sink was a UTF-16 conversion sink, just add the slice directly with
- // _sink.addSlice(source, start, end, isLast).
- // The code below is an moderately stupid workaround until a real
- // solution can be made.
- _sink.add(new String.fromCharCodes(source, start, end));
- if (isLast) close();
- }
-
- void addSlice(List<int> source, int start, int end, bool isLast) {
- end = RangeError.checkValidRange(start, end, source.length);
- if (start == end) return;
- if (source is! Uint8List) {
- // List may contain value outside of the 0..255 range. If so, throw.
- // Technically, we could excuse Uint8ClampedList as well, but it unlikely
- // to be relevant.
- _checkValidLatin1(source, start, end);
- }
- _addSliceToSink(source, start, end, isLast);
- }
-
- static void _checkValidLatin1(List<int> source, int start, int end) {
- int mask = 0;
- for (int i = start; i < end; i++) {
- mask |= source[i];
- }
- if (mask >= 0 && mask <= _LATIN1_MASK) {
- return;
- }
- _reportInvalidLatin1(source, start, end); // Always throws.
- }
-
-
- static void _reportInvalidLatin1(List<int> source, int start, int end) {
- // Find the index of the first non-Latin-1 character code.
- for (int i = start; i < end; i++) {
- int char = source[i];
- if (char < 0 || char > _LATIN1_MASK) {
- throw new FormatException("Source contains non-Latin-1 characters.",
- source, i);
- }
- }
- // Unreachable - we only call the function if the loop above throws.
- assert(false);
- }
-}
-
-class _Latin1AllowInvalidDecoderSink extends _Latin1DecoderSink {
- _Latin1AllowInvalidDecoderSink(StringConversionSink sink): super(sink);
-
- void addSlice(List<int> source, int start, int end, bool isLast) {
- RangeError.checkValidRange(start, end, source.length);
- for (int i = start; i < end; i++) {
- int char = source[i];
- if (char > _LATIN1_MASK || char < 0) {
- if (i > start) _addSliceToSink(source, start, i, false);
- // Add UTF-8 encoding of U+FFFD.
- _addSliceToSink(const[0xFFFD], 0, 1, false);
- start = i + 1;
- }
- }
- if (start < end) {
- _addSliceToSink(source, start, end, isLast);
- }
- if (isLast) {
- close();
- }
- }
-}
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