1/*
2 * Copyright (C) 2011 Apple 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 COMPUTER, 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 COMPUTER, 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#ifndef TextCodecUTF8_h
27#define TextCodecUTF8_h
28
29#include "wtf/text/TextCodec.h"
30
31namespace WTF {
32
33class TextCodecUTF8 : public TextCodec {
34public:
35    static void registerEncodingNames(EncodingNameRegistrar);
36    static void registerCodecs(TextCodecRegistrar);
37
38protected:
39    TextCodecUTF8() : m_partialSequenceSize(0) { }
40
41private:
42    static PassOwnPtr<TextCodec> create(const TextEncoding&, const void*);
43
44    virtual String decode(const char*, size_t length, FlushBehavior, bool stopOnError, bool& sawError) override;
45    virtual CString encode(const UChar*, size_t length, UnencodableHandling) override;
46    virtual CString encode(const LChar*, size_t length, UnencodableHandling) override;
47
48    template<typename CharType>
49    CString encodeCommon(const CharType* characters, size_t length);
50
51    template <typename CharType>
52    bool handlePartialSequence(CharType*& destination, const uint8_t*& source, const uint8_t* end, bool flush, bool stopOnError, bool& sawError);
53    void handleError(UChar*& destination, bool stopOnError, bool& sawError);
54    void consumePartialSequenceByte();
55
56    int m_partialSequenceSize;
57    uint8_t m_partialSequence[U8_MAX_LENGTH];
58
59};
60
61} // namespace WTF
62
63#endif // TextCodecUTF8_h
64