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initial import
This commit is contained in:
Guenter Obiltschnig
161
Foundation/src/UTF16Encoding.cpp
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161
Foundation/src/UTF16Encoding.cpp
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//
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// UTF16Encoding.cpp
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//
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// $Id: //poco/1.1.0/Foundation/src/UTF16Encoding.cpp#2 $
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//
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// Library: Foundation
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// Package: Text
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// Module: UTF16Encoding
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//
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// Copyright (c) 2004-2006, 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 "Foundation/UTF16Encoding.h"
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#include "Foundation/ByteOrder.h"
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Foundation_BEGIN
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const TextEncoding::CharacterMap UTF16Encoding::_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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UTF16Encoding::UTF16Encoding(ByteOrderType byteOrder)
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{
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setByteOrder(byteOrder);
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}
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UTF16Encoding::UTF16Encoding(int byteOrderMark)
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{
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setByteOrder(byteOrderMark);
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}
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UTF16Encoding::~UTF16Encoding()
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{
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}
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UTF16Encoding::ByteOrderType UTF16Encoding::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 UTF16Encoding::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 UTF16Encoding::setByteOrder(int byteOrderMark)
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{
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_flipBytes = byteOrderMark != 0xFEFF;
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}
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const TextEncoding::CharacterMap& UTF16Encoding::characterMap() const
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{
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return _charMap;
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}
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int UTF16Encoding::convert(const unsigned char* bytes) const
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{
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UInt16 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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return _flipBytes ? ByteOrder::flipBytes(uc) : uc;
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}
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int UTF16Encoding::convert(int ch, unsigned char* bytes, int length) const
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{
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if (ch <= 0xFFFF)
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{
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if (length >= 2)
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{
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UInt16 ch1 = _flipBytes ? ByteOrder::flipBytes((UInt16) ch) : (UInt16) ch;
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unsigned char* p = (unsigned char*) &ch;
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*bytes++ = *p++;
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*bytes++ = *p++;
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}
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return 2;
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}
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else
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{
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if (length >= 4)
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{
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int ch1 = ch - 0x10000;
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UInt16 w1 = 0xD800 + ((ch1 >> 10) & 0x3FF);
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UInt16 w2 = 0xDC00 + (ch1 & 0x3FF);
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if (_flipBytes)
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{
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w1 = ByteOrder::flipBytes(w1);
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w2 = ByteOrder::flipBytes(w2);
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}
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unsigned char* p = (unsigned char*) &w1;
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*bytes++ = *p++;
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*bytes++ = *p++;
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p = (unsigned char*) &w2;
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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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}
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Foundation_END
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