1 /*
2  * Copyright (C) 2004, 2006 Apple Computer, 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 COMPUTER, 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 COMPUTER, 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 #include "TextCodec.h"
31 #include <CoreServices/CoreServices.h>
32 
33 namespace WebCore {
34 
35     typedef ::TextEncoding TECTextEncodingID;
36     const TECTextEncodingID invalidEncoding = kCFStringEncodingInvalidId;
37 
38     class TextCodecMac : public TextCodec {
39     public:
40         static void registerEncodingNames(EncodingNameRegistrar);
41         static void registerCodecs(TextCodecRegistrar);
42 
43         explicit TextCodecMac(TECTextEncodingID);
44         virtual ~TextCodecMac();
45 
46         virtual String decode(const char*, size_t length, bool flush, bool stopOnError, bool& sawError);
47         virtual CString encode(const UChar*, size_t length, UnencodableHandling);
48 
49     private:
50         OSStatus decode(const unsigned char* inputBuffer, int inputBufferLength, int& inputLength,
51             void* outputBuffer, int outputBufferLength, int& outputLength);
52 
53         OSStatus createTECConverter() const;
54         void releaseTECConverter() const;
55 
56         TECTextEncodingID m_encoding;
57         UChar m_backslashAsCurrencySymbol;
58         unsigned m_numBufferedBytes;
59         unsigned char m_bufferedBytes[16]; // bigger than any single multi-byte character
60         mutable TECObjectRef m_converterTEC;
61     };
62 
63     struct TECConverterWrapper {
TECConverterWrapperTECConverterWrapper64         TECConverterWrapper() : converter(0), encoding(invalidEncoding) { }
~TECConverterWrapperTECConverterWrapper65         ~TECConverterWrapper() { if (converter) TECDisposeConverter(converter); }
66 
67         TECObjectRef converter;
68         TECTextEncodingID encoding;
69     };
70 
71 } // namespace WebCore
72 
73 #endif // TextCodecMac_h
74