1 /* 2 * Copyright (C) 2004, 2006, 2007, 2008, 2009 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 TextEncoding_h 27 #define TextEncoding_h 28 29 #include "wtf/Forward.h" 30 #include "wtf/WTFExport.h" 31 #include "wtf/text/TextCodec.h" 32 #include "wtf/unicode/Unicode.h" 33 34 namespace WTF { 35 36 class WTF_EXPORT TextEncoding { 37 public: 38 TextEncoding() : m_name(0) { } 39 TextEncoding(const char* name); 40 TextEncoding(const String& name); 41 42 bool isValid() const { return m_name; } 43 const char* name() const { return m_name; } 44 bool usesVisualOrdering() const; 45 const TextEncoding& closestByteBasedEquivalent() const; 46 const TextEncoding& encodingForFormSubmission() const; 47 48 String decode(const char* str, size_t length) const 49 { 50 bool ignored; 51 return decode(str, length, false, ignored); 52 } 53 String decode(const char*, size_t length, bool stopOnError, bool& sawError) const; 54 55 // Encodes the string, but does *not* normalize first. 56 CString encode(const String&, UnencodableHandling) const; 57 58 // Applies Unicode NFC normalization, then encodes the normalized string. 59 CString normalizeAndEncode(const String&, UnencodableHandling) const; 60 61 UChar backslashAsCurrencySymbol() const; 62 63 private: 64 bool isNonByteBasedEncoding() const; 65 bool isUTF7Encoding() const; 66 67 const char* m_name; 68 UChar m_backslashAsCurrencySymbol; 69 }; 70 71 inline bool operator==(const TextEncoding& a, const TextEncoding& b) { return a.name() == b.name(); } 72 inline bool operator!=(const TextEncoding& a, const TextEncoding& b) { return a.name() != b.name(); } 73 74 WTF_EXPORT const TextEncoding& ASCIIEncoding(); 75 WTF_EXPORT const TextEncoding& Latin1Encoding(); 76 WTF_EXPORT const TextEncoding& UTF16BigEndianEncoding(); 77 WTF_EXPORT const TextEncoding& UTF16LittleEndianEncoding(); 78 WTF_EXPORT const TextEncoding& UTF32BigEndianEncoding(); 79 WTF_EXPORT const TextEncoding& UTF32LittleEndianEncoding(); 80 WTF_EXPORT const TextEncoding& UTF8Encoding(); 81 WTF_EXPORT const TextEncoding& WindowsLatin1Encoding(); 82 83 } // namespace WTF 84 85 using WTF::ASCIIEncoding; 86 using WTF::Latin1Encoding; 87 using WTF::UTF16BigEndianEncoding; 88 using WTF::UTF16LittleEndianEncoding; 89 using WTF::UTF32BigEndianEncoding; 90 using WTF::UTF32LittleEndianEncoding; 91 using WTF::UTF8Encoding; 92 using WTF::WindowsLatin1Encoding; 93 94 #endif // TextEncoding_h 95
