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1 /* | 1 /* |
2 Copyright (C) 1999 Lars Knoll (knoll@mpi-hd.mpg.de) | 2 Copyright (C) 1999 Lars Knoll (knoll@mpi-hd.mpg.de) |
3 Copyright (C) 2006 Alexey Proskuryakov (ap@nypop.com) | 3 Copyright (C) 2006 Alexey Proskuryakov (ap@nypop.com) |
4 Copyright (C) 2006, 2008 Apple Inc. All rights reserved. | 4 Copyright (C) 2006, 2008 Apple Inc. All rights reserved. |
5 | 5 |
6 This library is free software; you can redistribute it and/or | 6 This library is free software; you can redistribute it and/or |
7 modify it under the terms of the GNU Library General Public | 7 modify it under the terms of the GNU Library General Public |
8 License as published by the Free Software Foundation; either | 8 License as published by the Free Software Foundation; either |
9 version 2 of the License, or (at your option) any later version. | 9 version 2 of the License, or (at your option) any later version. |
10 | 10 |
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73 { | 73 { |
74 m_hintEncoding = encoding.name(); | 74 m_hintEncoding = encoding.name(); |
75 } | 75 } |
76 | 76 |
77 void useLenientXMLDecoding() { m_useLenientXMLDecoding = true; } | 77 void useLenientXMLDecoding() { m_useLenientXMLDecoding = true; } |
78 bool sawError() const { return m_sawError; } | 78 bool sawError() const { return m_sawError; } |
79 size_t checkForBOM(const char*, size_t); | 79 size_t checkForBOM(const char*, size_t); |
80 | 80 |
81 private: | 81 private: |
82 | 82 |
83 // TextResourceDecoder does four kinds of encoding detection: | 83 // TextResourceDecoder does three kind of encoding detection: |
84 // 1. By BOM, | 84 // 1. By BOM, |
85 // 2. By Content if |m_contentType| is not |PlainTextContext| | 85 // 2. By Content if |m_contentType| is not |PlainTextContext| |
86 // (e.g. <meta> tag for HTML), | 86 // (e.g. <meta> tag for HTML), and |
87 // 3. By isUTF8Encoded() to detect if the document | 87 // 3. By detectTextEncoding(). |
88 // is of UTF-8, and | |
89 // 4. By detectTextEncodingUniversal(). | |
90 enum EncodingDetectionOption { | 88 enum EncodingDetectionOption { |
91 // Use 1. + 2. + 4. | 89 // Use 1. + 2. + 3. |
92 UseAllAutoDetection, | 90 UseAllAutoDetection, |
93 | 91 |
94 // Use 1. + 2. + 3. | 92 // Use 1. + 2. |
95 UseContentAndBOMBasedDetection, | 93 UseContentAndBOMBasedDetection, |
96 | 94 |
97 // Use None of them. | 95 // Use None of them. |
98 // |m_contentType| must be |PlainTextContent| and | 96 // |m_contentType| must be |PlainTextContent| and |
99 // |m_encoding| must be UTF8Encoding. | 97 // |m_encoding| must be UTF8Encoding. |
100 // This doesn't change encoding based on BOMs, but still processes | 98 // This doesn't change encoding based on BOMs, but still processes |
101 // utf-8 BOMs so that utf-8 BOMs don't appear in the decoded result. | 99 // utf-8 BOMs so that utf-8 BOMs don't appear in the decoded result. |
102 AlwaysUseUTF8ForText | 100 AlwaysUseUTF8ForText |
103 }; | 101 }; |
104 | 102 |
105 TextResourceDecoder(const String& mimeType, const WTF::TextEncoding& default
Encoding, EncodingDetectionOption); | 103 TextResourceDecoder(const String& mimeType, const WTF::TextEncoding& default
Encoding, EncodingDetectionOption); |
106 | 104 |
107 enum ContentType { PlainTextContent, HTMLContent, XMLContent, CSSContent };
// PlainText only checks for BOM. | 105 enum ContentType { PlainTextContent, HTMLContent, XMLContent, CSSContent };
// PlainText only checks for BOM. |
108 static ContentType determineContentType(const String& mimeType); | 106 static ContentType determineContentType(const String& mimeType); |
109 static const WTF::TextEncoding& defaultEncoding(ContentType, const WTF::Text
Encoding& defaultEncoding); | 107 static const WTF::TextEncoding& defaultEncoding(ContentType, const WTF::Text
Encoding& defaultEncoding); |
110 | 108 |
111 bool checkForCSSCharset(const char*, size_t, bool& movedDataToBuffer); | 109 bool checkForCSSCharset(const char*, size_t, bool& movedDataToBuffer); |
112 bool checkForXMLCharset(const char*, size_t, bool& movedDataToBuffer); | 110 bool checkForXMLCharset(const char*, size_t, bool& movedDataToBuffer); |
113 void checkForMetaCharset(const char*, size_t); | 111 void checkForMetaCharset(const char*, size_t); |
114 void detectTextEncoding(const char*, size_t); | 112 bool shouldAutoDetect() const; |
115 bool shouldDetectEncoding() const; | |
116 | 113 |
117 ContentType m_contentType; | 114 ContentType m_contentType; |
118 WTF::TextEncoding m_encoding; | 115 WTF::TextEncoding m_encoding; |
119 OwnPtr<TextCodec> m_codec; | 116 OwnPtr<TextCodec> m_codec; |
120 EncodingSource m_source; | 117 EncodingSource m_source; |
121 const char* m_hintEncoding; | 118 const char* m_hintEncoding; |
122 Vector<char> m_buffer; | 119 Vector<char> m_buffer; |
123 bool m_checkedForBOM; | 120 bool m_checkedForBOM; |
124 bool m_checkedForCSSCharset; | 121 bool m_checkedForCSSCharset; |
125 bool m_checkedForXMLCharset; | 122 bool m_checkedForXMLCharset; |
126 bool m_checkedForMetaCharset; | 123 bool m_checkedForMetaCharset; |
127 bool m_useLenientXMLDecoding; // Don't stop on XML decoding errors. | 124 bool m_useLenientXMLDecoding; // Don't stop on XML decoding errors. |
128 bool m_sawError; | 125 bool m_sawError; |
129 EncodingDetectionOption m_encodingDetectionOption; | 126 EncodingDetectionOption m_encodingDetectionOption; |
130 | 127 |
131 OwnPtr<HTMLMetaCharsetParser> m_charsetParser; | 128 OwnPtr<HTMLMetaCharsetParser> m_charsetParser; |
132 }; | 129 }; |
133 | 130 |
134 } // namespace blink | 131 } // namespace blink |
135 | 132 |
136 #endif | 133 #endif |
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