Peter von der Ahé
e8aef37eac
Change-Id: Ie436375c78496366accf0ba82938e54cbe30b143 Reviewed-on: https://dart-review.googlesource.com/3001 Commit-Queue: Peter von der Ahé <ahe@google.com> Reviewed-by: Lasse R.H. Nielsen <lrn@google.com> Reviewed-by: Vyacheslav Egorov <vegorov@google.com> Reviewed-by: Johnni Winther <johnniwinther@google.com>
80 lines
2.4 KiB
Dart
80 lines
2.4 KiB
Dart
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// part of "core_patch.dart";
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typedef Uri _UriBaseClosure();
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Uri _unsupportedUriBase() {
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throw new UnsupportedError("'Uri.base' is not supported");
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}
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// _uriBaseClosure can be overwritten by the embedder to supply a different
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// value for Uri.base.
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_UriBaseClosure _uriBaseClosure = _unsupportedUriBase;
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@patch
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class Uri {
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@patch
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static Uri get base => _uriBaseClosure();
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}
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/// VM implementation of Uri.
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@patch
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class _Uri {
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static final bool _isWindowsCached = _isWindowsPlatform;
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static bool get _isWindowsPlatform native "Uri_isWindowsPlatform";
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@patch
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static bool get _isWindows => _isWindowsCached;
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@patch
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static String _uriEncode(List<int> canonicalTable, String text,
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Encoding encoding, bool spaceToPlus) {
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// First check if the text will be changed by encoding.
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int i = 0;
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if (identical(encoding, UTF8) ||
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identical(encoding, LATIN1) ||
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identical(encoding, ASCII)) {
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// Encoding is compatible with the original string.
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// Find first character that needs encoding.
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for (; i < text.length; i++) {
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var char = text.codeUnitAt(i);
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if (char >= 128 ||
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canonicalTable[char >> 4] & (1 << (char & 0x0f)) == 0) {
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break;
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}
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}
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}
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if (i == text.length) return text;
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// Encode the string into bytes then generate an ASCII only string
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// by percent encoding selected bytes.
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StringBuffer result = new StringBuffer();
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for (int j = 0; j < i; j++) {
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result.writeCharCode(text.codeUnitAt(j));
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}
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// TODO(lrn): Is there a way to only encode from index i and forwards.
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var bytes = encoding.encode(text);
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for (; i < bytes.length; i++) {
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int byte = bytes[i];
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if (byte < 128 &&
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((canonicalTable[byte >> 4] & (1 << (byte & 0x0f))) != 0)) {
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result.writeCharCode(byte);
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} else if (spaceToPlus && byte == _SPACE) {
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result.writeCharCode(_PLUS);
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} else {
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const String hexDigits = '0123456789ABCDEF';
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result
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..writeCharCode(_PERCENT)
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..writeCharCode(hexDigits.codeUnitAt(byte >> 4))
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..writeCharCode(hexDigits.codeUnitAt(byte & 0x0f));
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}
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}
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return result.toString();
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}
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}
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