1/*
2 * Copyright (C) 2004, 2006 Apple Inc.  All rights reserved.
3 * Copyright (C) 2006 Alexey Proskuryakov <ap@nypop.com>
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#ifndef TextCodecMac_h
28#define TextCodecMac_h
29
30#if !PLATFORM(IOS)
31
32#include "TextCodec.h"
33#include <CoreServices/CoreServices.h>
34
35namespace WebCore {
36
37    typedef ::TextEncoding TECTextEncodingID;
38    const TECTextEncodingID invalidEncoding = kCFStringEncodingInvalidId;
39
40    class TextCodecMac : public TextCodec {
41    public:
42        static void registerEncodingNames(EncodingNameRegistrar);
43        static void registerCodecs(TextCodecRegistrar);
44
45        explicit TextCodecMac(TECTextEncodingID);
46        virtual ~TextCodecMac();
47
48        virtual String decode(const char*, size_t length, bool flush, bool stopOnError, bool& sawError);
49        virtual CString encode(const UChar*, size_t length, UnencodableHandling);
50
51    private:
52        OSStatus decode(const unsigned char* inputBuffer, int inputBufferLength, int& inputLength,
53            void* outputBuffer, int outputBufferLength, int& outputLength);
54
55        OSStatus createTECConverter() const;
56        void releaseTECConverter() const;
57
58        TECTextEncodingID m_encoding;
59        UChar m_backslashAsCurrencySymbol;
60        unsigned m_numBufferedBytes;
61        unsigned char m_bufferedBytes[16]; // bigger than any single multi-byte character
62        mutable TECObjectRef m_converterTEC;
63    };
64
65    struct TECConverterWrapper {
66        TECConverterWrapper() : converter(0), encoding(invalidEncoding) { }
67        ~TECConverterWrapper() { if (converter) TECDisposeConverter(converter); }
68
69        TECObjectRef converter;
70        TECTextEncodingID encoding;
71    };
72
73} // namespace WebCore
74
75#endif // !PLATFORM(IOS)
76
77#endif // TextCodecMac_h
78