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1 /* | 1 /* |
2 * Copyright (C) 2013 Google Inc. All rights reserved. | 2 * Copyright (C) 2013 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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43 { | 43 { |
44 WTF::TextEncoding encoding(label); | 44 WTF::TextEncoding encoding(label); |
45 // The replacement encoding is not valid, but the Encoding API also | 45 // The replacement encoding is not valid, but the Encoding API also |
46 // rejects aliases of the replacement encoding. | 46 // rejects aliases of the replacement encoding. |
47 if (!encoding.isValid() || !strcasecmp(encoding.name(), "replacement")) { | 47 if (!encoding.isValid() || !strcasecmp(encoding.name(), "replacement")) { |
48 exceptionState.throwTypeError("The encoding label provided ('" + label +
"') is invalid."); | 48 exceptionState.throwTypeError("The encoding label provided ('" + label +
"') is invalid."); |
49 return 0; | 49 return 0; |
50 } | 50 } |
51 | 51 |
52 bool fatal = false; | 52 bool fatal = false; |
53 DictionaryHelper::get(options, "fatal", fatal); | 53 options.get("fatal", fatal); |
54 | 54 |
55 bool ignoreBOM = false; | 55 bool ignoreBOM = false; |
56 DictionaryHelper::get(options, "ignoreBOM", ignoreBOM); | 56 options.get("ignoreBOM", ignoreBOM); |
57 | 57 |
58 return new TextDecoder(encoding, fatal, ignoreBOM); | 58 return new TextDecoder(encoding, fatal, ignoreBOM); |
59 } | 59 } |
60 | 60 |
61 | 61 |
62 TextDecoder::TextDecoder(const WTF::TextEncoding& encoding, bool fatal, bool ign
oreBOM) | 62 TextDecoder::TextDecoder(const WTF::TextEncoding& encoding, bool fatal, bool ign
oreBOM) |
63 : m_encoding(encoding) | 63 : m_encoding(encoding) |
64 , m_codec(newTextCodec(encoding)) | 64 , m_codec(newTextCodec(encoding)) |
65 , m_fatal(fatal) | 65 , m_fatal(fatal) |
66 , m_ignoreBOM(ignoreBOM) | 66 , m_ignoreBOM(ignoreBOM) |
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78 // Where possible, encoding aliases should be handled by changes to Chromium
's ICU or Blink's WTF. | 78 // Where possible, encoding aliases should be handled by changes to Chromium
's ICU or Blink's WTF. |
79 // The same codec is used, but WTF maintains a different name/identity for t
hese. | 79 // The same codec is used, but WTF maintains a different name/identity for t
hese. |
80 if (name == "iso-8859-1" || name == "us-ascii") | 80 if (name == "iso-8859-1" || name == "us-ascii") |
81 return "windows-1252"; | 81 return "windows-1252"; |
82 return name; | 82 return name; |
83 } | 83 } |
84 | 84 |
85 String TextDecoder::decode(ArrayBufferView* input, const Dictionary& options, Ex
ceptionState& exceptionState) | 85 String TextDecoder::decode(ArrayBufferView* input, const Dictionary& options, Ex
ceptionState& exceptionState) |
86 { | 86 { |
87 bool stream = false; | 87 bool stream = false; |
88 DictionaryHelper::get(options, "stream", stream); | 88 options.get("stream", stream); |
89 | 89 |
90 const char* start = input ? static_cast<const char*>(input->baseAddress()) :
0; | 90 const char* start = input ? static_cast<const char*>(input->baseAddress()) :
0; |
91 size_t length = input ? input->byteLength() : 0; | 91 size_t length = input ? input->byteLength() : 0; |
92 | 92 |
93 WTF::FlushBehavior flush = stream ? WTF::DoNotFlush : WTF::DataEOF; | 93 WTF::FlushBehavior flush = stream ? WTF::DoNotFlush : WTF::DataEOF; |
94 | 94 |
95 bool sawError = false; | 95 bool sawError = false; |
96 String s = m_codec->decode(start, length, flush, m_fatal, sawError); | 96 String s = m_codec->decode(start, length, flush, m_fatal, sawError); |
97 | 97 |
98 if (m_fatal && sawError) { | 98 if (m_fatal && sawError) { |
99 exceptionState.throwDOMException(EncodingError, "The encoded data was no
t valid."); | 99 exceptionState.throwDOMException(EncodingError, "The encoded data was no
t valid."); |
100 return String(); | 100 return String(); |
101 } | 101 } |
102 | 102 |
103 if (!m_ignoreBOM && !m_bomSeen && !s.isEmpty()) { | 103 if (!m_ignoreBOM && !m_bomSeen && !s.isEmpty()) { |
104 m_bomSeen = true; | 104 m_bomSeen = true; |
105 String name(m_encoding.name()); | 105 String name(m_encoding.name()); |
106 if ((name == "UTF-8" || name == "UTF-16LE" || name == "UTF-16BE") && s[0
] == 0xFEFF) | 106 if ((name == "UTF-8" || name == "UTF-16LE" || name == "UTF-16BE") && s[0
] == 0xFEFF) |
107 s.remove(0); | 107 s.remove(0); |
108 } | 108 } |
109 | 109 |
110 if (flush) | 110 if (flush) |
111 m_bomSeen = false; | 111 m_bomSeen = false; |
112 | 112 |
113 return s; | 113 return s; |
114 } | 114 } |
115 | 115 |
116 } // namespace blink | 116 } // namespace blink |
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