1 /*
2 * Copyright (C) 2010 Google, Inc. All Rights Reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "config.h"
27 #include "core/dom/DecodedDataDocumentParser.h"
28
29 #include "core/dom/Document.h"
30 #include "core/dom/DocumentEncodingData.h"
31 #include "core/html/parser/TextResourceDecoder.h"
32
33 namespace blink {
34
DecodedDataDocumentParser(Document & document)35 DecodedDataDocumentParser::DecodedDataDocumentParser(Document& document)
36 : DocumentParser(&document)
37 , m_needsDecoder(true)
38 {
39 }
40
~DecodedDataDocumentParser()41 DecodedDataDocumentParser::~DecodedDataDocumentParser()
42 {
43 }
44
setDecoder(PassOwnPtr<TextResourceDecoder> decoder)45 void DecodedDataDocumentParser::setDecoder(PassOwnPtr<TextResourceDecoder> decoder)
46 {
47 // If the decoder is explicitly unset rather than having ownership
48 // transferred away by takeDecoder(), we need to make sure it's recreated
49 // next time data is appended.
50 m_needsDecoder = !decoder;
51 m_decoder = decoder;
52 }
53
decoder()54 TextResourceDecoder* DecodedDataDocumentParser::decoder()
55 {
56 return m_decoder.get();
57 }
58
takeDecoder()59 PassOwnPtr<TextResourceDecoder> DecodedDataDocumentParser::takeDecoder()
60 {
61 return m_decoder.release();
62 }
63
appendBytes(const char * data,size_t length)64 void DecodedDataDocumentParser::appendBytes(const char* data, size_t length)
65 {
66 if (!length)
67 return;
68
69 // This should be checking isStopped(), but XMLDocumentParser prematurely
70 // stops parsing when handling an XSLT processing instruction and still
71 // needs to receive decoded bytes.
72 if (isDetached())
73 return;
74
75 String decoded = m_decoder->decode(data, length);
76 updateDocument(decoded);
77 }
78
flush()79 void DecodedDataDocumentParser::flush()
80 {
81 // This should be checking isStopped(), but XMLDocumentParser prematurely
82 // stops parsing when handling an XSLT processing instruction and still
83 // needs to receive decoded bytes.
84 if (isDetached())
85 return;
86
87 // null decoder indicates there is no data received.
88 // We have nothing to do in that case.
89 if (!m_decoder)
90 return;
91
92 String remainingData = m_decoder->flush();
93 updateDocument(remainingData);
94 }
95
updateDocument(String & decodedData)96 void DecodedDataDocumentParser::updateDocument(String& decodedData)
97 {
98 document()->setEncodingData(DocumentEncodingData(*m_decoder.get()));
99
100 if (!decodedData.isEmpty())
101 append(decodedData.releaseImpl());
102 }
103
104 };
105