mirror of
https://github.com/pocoproject/poco.git
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class UTF32Encoding added
This commit is contained in:
Marian Krivos
@@ -28,7 +28,7 @@ objects = ArchiveStrategy Ascii ASCIIEncoding AsyncChannel Base64Decoder Base64E
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Task TaskManager TaskNotification TeeStream Hash HashStatistic \
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TemporaryFile TextConverter TextEncoding TextIterator TextBufferIterator Thread ThreadLocal \
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ThreadPool ThreadTarget ActiveDispatcher Timer Timespan Timestamp Timezone Token URI \
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FileStreamFactory URIStreamFactory URIStreamOpener UTF16Encoding UTF8Encoding UTF8String \
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FileStreamFactory URIStreamFactory URIStreamOpener UTF32Encoding UTF16Encoding UTF8Encoding UTF8String \
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Unicode UnicodeConverter Windows1250Encoding Windows1251Encoding Windows1252Encoding \
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UUID UUIDGenerator Void Var VarHolder Format Pipe PipeImpl PipeStream SharedMemory \
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MemoryStream FileStream AtomicCounter
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107
Foundation/include/Poco/UTF32Encoding.h
Normal file
107
Foundation/include/Poco/UTF32Encoding.h
Normal file
@@ -0,0 +1,107 @@
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//
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// UTF32Encoding.h
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//
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// $Id: //poco/1.4/Foundation/include/Poco/UTF32Encoding.h#1 $
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//
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// Library: Foundation
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// Package: Text
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// Module: UTF32Encoding
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//
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// Definition of the UTF32Encoding class.
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//
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// Copyright (c) 2004-2007, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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//
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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#ifndef Foundation_UTF32Encoding_INCLUDED
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#define Foundation_UTF32Encoding_INCLUDED
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#include "Poco/Foundation.h"
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#include "Poco/TextEncoding.h"
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namespace Poco {
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class Foundation_API UTF32Encoding: public TextEncoding
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/// UTF-16 text encoding, as defined in RFC 2781.
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///
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/// When converting from UTF-16 to Unicode, surrogates are
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/// reported as they are - in other words, surrogate pairs
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/// are not combined into one Unicode character.
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/// When converting from Unicode to UTF-16, however, characters
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/// outside the 16-bit range are converted into a low and
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/// high surrogate.
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{
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public:
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enum ByteOrderType
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{
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BIG_ENDIAN_BYTE_ORDER,
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LITTLE_ENDIAN_BYTE_ORDER,
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NATIVE_BYTE_ORDER
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};
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UTF32Encoding(ByteOrderType byteOrder = NATIVE_BYTE_ORDER);
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/// Creates and initializes the encoding for the given byte order.
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UTF32Encoding(int byteOrderMark);
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/// Creates and initializes the encoding for the byte-order
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/// indicated by the given byte-order mark, which is the Unicode
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/// character 0xFEFF.
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~UTF32Encoding();
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ByteOrderType getByteOrder() const;
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/// Returns the byte-order currently in use.
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void setByteOrder(ByteOrderType byteOrder);
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/// Sets the byte order.
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void setByteOrder(int byteOrderMark);
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/// Sets the byte order according to the given
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/// byte order mark, which is the Unicode
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/// character 0xFEFF.
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const char* canonicalName() const;
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bool isA(const std::string& encodingName) const;
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const CharacterMap& characterMap() const;
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int convert(const unsigned char* bytes) const;
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int convert(int ch, unsigned char* bytes, int length) const;
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int queryConvert(const unsigned char* bytes, int length) const;
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int sequenceLength(const unsigned char* bytes, int length) const;
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private:
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bool _flipBytes;
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static const char* _names[];
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static const CharacterMap _charMap;
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};
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} // namespace Poco
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#endif // Foundation_UTF32Encoding_INCLUDED
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@@ -41,6 +41,7 @@
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#include "Poco/Latin1Encoding.h"
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#include "Poco/Latin2Encoding.h"
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#include "Poco/Latin9Encoding.h"
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#include "Poco/UTF32Encoding.h"
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#include "Poco/UTF16Encoding.h"
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#include "Poco/UTF8Encoding.h"
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#include "Poco/Windows1250Encoding.h"
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@@ -73,6 +74,7 @@ public:
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add(new Latin9Encoding);
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add(pUtf8Encoding);
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add(new UTF16Encoding);
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add(new UTF32Encoding);
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add(new Windows1250Encoding);
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add(new Windows1251Encoding);
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add(new Windows1252Encoding);
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200
Foundation/src/UTF32Encoding.cpp
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200
Foundation/src/UTF32Encoding.cpp
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@@ -0,0 +1,200 @@
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//
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// UTF32Encoding.cpp
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//
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// $Id: //poco/1.4/Foundation/src/UTF32Encoding.cpp#1 $
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//
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// Library: Foundation
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// Package: Text
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// Module: UTF32Encoding
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//
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// Copyright (c) 2004-2007, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
|
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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//
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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#include "Poco/UTF32Encoding.h"
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#include "Poco/ByteOrder.h"
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#include "Poco/String.h"
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namespace Poco {
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const char* UTF32Encoding::_names[] =
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{
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"UTF-32",
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"UTF32",
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NULL
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};
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const TextEncoding::CharacterMap UTF32Encoding::_charMap =
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{
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/* 00 */ -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
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/* 10 */ -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
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/* 20 */ -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
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/* 30 */ -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
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/* 40 */ -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
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/* 50 */ -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
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/* 60 */ -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
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/* 70 */ -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
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/* 80 */ -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
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/* 90 */ -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
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/* a0 */ -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
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/* b0 */ -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
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/* c0 */ -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
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/* d0 */ -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
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/* e0 */ -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
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/* f0 */ -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
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};
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UTF32Encoding::UTF32Encoding(ByteOrderType byteOrder)
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{
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setByteOrder(byteOrder);
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}
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UTF32Encoding::UTF32Encoding(int byteOrderMark)
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{
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setByteOrder(byteOrderMark);
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}
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UTF32Encoding::~UTF32Encoding()
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{
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}
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UTF32Encoding::ByteOrderType UTF32Encoding::getByteOrder() const
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{
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#if defined(POCO_ARCH_BIG_ENDIAN)
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return _flipBytes ? LITTLE_ENDIAN_BYTE_ORDER : BIG_ENDIAN_BYTE_ORDER;
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#else
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return _flipBytes ? BIG_ENDIAN_BYTE_ORDER : LITTLE_ENDIAN_BYTE_ORDER;
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#endif
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}
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void UTF32Encoding::setByteOrder(ByteOrderType byteOrder)
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{
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#if defined(POCO_ARCH_BIG_ENDIAN)
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_flipBytes = byteOrder == LITTLE_ENDIAN_BYTE_ORDER;
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#else
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_flipBytes = byteOrder == BIG_ENDIAN_BYTE_ORDER;;
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#endif
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}
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void UTF32Encoding::setByteOrder(int byteOrderMark)
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{
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_flipBytes = byteOrderMark != 0xFEFF;
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}
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const char* UTF32Encoding::canonicalName() const
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{
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return _names[0];
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}
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bool UTF32Encoding::isA(const std::string& encodingName) const
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{
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for (const char** name = _names; *name; ++name)
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{
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if (Poco::icompare(encodingName, *name) == 0)
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return true;
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}
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return false;
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}
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const TextEncoding::CharacterMap& UTF32Encoding::characterMap() const
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{
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return _charMap;
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}
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int UTF32Encoding::convert(const unsigned char* bytes) const
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{
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UInt32 uc;
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unsigned char* p = (unsigned char*) &uc;
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*p++ = *bytes++;
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*p++ = *bytes++;
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*p++ = *bytes++;
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*p++ = *bytes++;
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if (_flipBytes)
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{
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ByteOrder::flipBytes(uc);
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}
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return uc;
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}
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int UTF32Encoding::convert(int ch, unsigned char* bytes, int length) const
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{
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if (bytes && length >= 4)
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{
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UInt32 ch1 = _flipBytes ? ByteOrder::flipBytes((UInt32) ch) : (UInt32) ch;
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unsigned char* p = (unsigned char*) &ch1;
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*bytes++ = *p++;
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*bytes++ = *p++;
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*bytes++ = *p++;
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*bytes++ = *p++;
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}
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return 4;
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}
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int UTF32Encoding::queryConvert(const unsigned char* bytes, int length) const
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{
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int ret = -2;
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if (length >= 4)
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{
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UInt32 uc;
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unsigned char* p = (unsigned char*) &uc;
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*p++ = *bytes++;
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*p++ = *bytes++;
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*p++ = *bytes++;
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*p++ = *bytes++;
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if (_flipBytes)
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ByteOrder::flipBytes(uc);
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return uc;
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}
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return ret;
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}
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int UTF32Encoding::sequenceLength(const unsigned char* bytes, int length) const
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{
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return 4;
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}
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} // namespace Poco
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