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office-gobmx/sal/textenc/converteuctw.c
Oliver Bolte eaf06715c4 INTEGRATION: CWS kso14 (1.5.84); FILE MERGED 
2005/01/19 16:39:00 sb 1.5.84.1: #i40979# Get rid of GCC warnings: use of cast expression as lvalue is deprecated; patch supplied by cmc.
2005-01-27 10:14:46 +00:00

500 lines
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/*************************************************************************
*
* $RCSfile: converteuctw.c,v $
*
* $Revision: 1.6 $
*
* last change: $Author: obo $ $Date: 2005-01-27 11:14:31 $
*
* The Contents of this file are made available subject to the terms of
* either of the following licenses
*
* - GNU Lesser General Public License Version 2.1
* - Sun Industry Standards Source License Version 1.1
*
* Sun Microsystems Inc., October, 2000
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2000 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
*
* Sun Industry Standards Source License Version 1.1
* =================================================
* The contents of this file are subject to the Sun Industry Standards
* Source License Version 1.1 (the "License"); You may not use this file
* except in compliance with the License. You may obtain a copy of the
* License at http://www.openoffice.org/license.html.
*
* Software provided under this License is provided on an "AS IS" basis,
* WITHOUT WARRUNTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING,
* WITHOUT LIMITATION, WARRUNTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
* See the License for the specific provisions governing your rights and
* obligations concerning the Software.
*
* The Initial Developer of the Original Code is: Sun Microsystems, Inc..
*
* Copyright: 2000 by Sun Microsystems, Inc.
*
* All Rights Reserved.
*
* Contributor(s): _______________________________________
*
*
************************************************************************/
#ifndef INCLUDED_RTL_TEXTENC_CONVERTEUCTW_H
#include "converteuctw.h"
#endif
#ifndef INCLUDED_RTL_TEXTENC_CONTEXT_H
#include "context.h"
#endif
#ifndef INCLUDED_RTL_TEXTENC_CONVERTER_H
#include "converter.h"
#endif
#ifndef INCLUDED_RTL_TEXTENC_TENCHELP_H
#include "tenchelp.h"
#endif
#ifndef INCLUDED_RTL_TEXTENC_UNICHARS_H
#include "unichars.h"
#endif
#ifndef _RTL_ALLOC_H_
#include "rtl/alloc.h"
#endif
#ifndef _RTL_TEXTCVT_H
#include "rtl/textcvt.h"
#endif
#ifndef _SAL_TYPES_H_
#include "sal/types.h"
#endif
typedef enum
{
IMPL_EUC_TW_TO_UNICODE_STATE_0,
IMPL_EUC_TW_TO_UNICODE_STATE_1,
IMPL_EUC_TW_TO_UNICODE_STATE_2_1,
IMPL_EUC_TW_TO_UNICODE_STATE_2_2,
IMPL_EUC_TW_TO_UNICODE_STATE_2_3
} ImplEucTwToUnicodeState;
typedef struct
{
ImplEucTwToUnicodeState m_eState;
sal_Int32 m_nPlane; /* 0--15 */
sal_Int32 m_nRow; /* 0--93 */
} ImplEucTwToUnicodeContext;
void * ImplCreateEucTwToUnicodeContext(void)
{
void * pContext = rtl_allocateMemory(sizeof (ImplEucTwToUnicodeContext));
((ImplEucTwToUnicodeContext *) pContext)->m_eState
= IMPL_EUC_TW_TO_UNICODE_STATE_0;
return pContext;
}
void ImplResetEucTwToUnicodeContext(void * pContext)
{
if (pContext)
((ImplEucTwToUnicodeContext *) pContext)->m_eState
= IMPL_EUC_TW_TO_UNICODE_STATE_0;
}
sal_Size ImplConvertEucTwToUnicode(ImplTextConverterData const * pData,
void * pContext,
sal_Char const * pSrcBuf,
sal_Size nSrcBytes,
sal_Unicode * pDestBuf,
sal_Size nDestChars,
sal_uInt32 nFlags,
sal_uInt32 * pInfo,
sal_Size * pSrcCvtBytes)
{
sal_uInt16 const * pCns116431992Data
= ((ImplEucTwConverterData const *) pData)->
m_pCns116431992ToUnicodeData;
sal_Int32 const * pCns116431992RowOffsets
= ((ImplEucTwConverterData const *) pData)->
m_pCns116431992ToUnicodeRowOffsets;
sal_Int32 const * pCns116431992PlaneOffsets
= ((ImplEucTwConverterData const *) pData)->
m_pCns116431992ToUnicodePlaneOffsets;
ImplEucTwToUnicodeState eState = IMPL_EUC_TW_TO_UNICODE_STATE_0;
sal_Int32 nPlane = 0;
sal_Int32 nRow = 0;
sal_uInt32 nInfo = 0;
sal_Size nConverted = 0;
sal_Unicode * pDestBufPtr = pDestBuf;
sal_Unicode * pDestBufEnd = pDestBuf + nDestChars;
if (pContext)
{
eState = ((ImplEucTwToUnicodeContext *) pContext)->m_eState;
nPlane = ((ImplEucTwToUnicodeContext *) pContext)->m_nPlane;
nRow = ((ImplEucTwToUnicodeContext *) pContext)->m_nRow;
}
for (; nConverted < nSrcBytes; ++nConverted)
{
sal_Bool bUndefined = sal_True;
sal_uInt32 nChar = *(sal_uChar const *) pSrcBuf++;
switch (eState)
{
case IMPL_EUC_TW_TO_UNICODE_STATE_0:
if (nChar < 0x80)
if (pDestBufPtr != pDestBufEnd)
*pDestBufPtr++ = (sal_Unicode) nChar;
else
goto no_output;
else if (nChar >= 0xA1 && nChar <= 0xFE)
{
nRow = nChar - 0xA1;
eState = IMPL_EUC_TW_TO_UNICODE_STATE_1;
}
else if (nChar == 0x8E)
eState = IMPL_EUC_TW_TO_UNICODE_STATE_2_1;
else
{
bUndefined = sal_False;
goto bad_input;
}
break;
case IMPL_EUC_TW_TO_UNICODE_STATE_1:
if (nChar >= 0xA1 && nChar <= 0xFE)
{
nPlane = 0;
goto transform;
}
else
{
bUndefined = sal_False;
goto bad_input;
}
break;
case IMPL_EUC_TW_TO_UNICODE_STATE_2_1:
if (nChar >= 0xA1 && nChar <= 0xB0)
{
nPlane = nChar - 0xA1;
++eState;
}
else
{
bUndefined = sal_False;
goto bad_input;
}
break;
case IMPL_EUC_TW_TO_UNICODE_STATE_2_2:
if (nChar >= 0xA1 && nChar <= 0xFE)
{
nRow = nChar - 0xA1;
++eState;
}
else
{
bUndefined = sal_False;
goto bad_input;
}
break;
case IMPL_EUC_TW_TO_UNICODE_STATE_2_3:
if (nChar >= 0xA1 && nChar <= 0xFE)
goto transform;
else
{
bUndefined = sal_False;
goto bad_input;
}
break;
}
continue;
transform:
{
sal_Int32 nPlaneOffset = pCns116431992PlaneOffsets[nPlane];
if (nPlaneOffset == -1)
goto bad_input;
else
{
sal_Int32 nOffset
= pCns116431992RowOffsets[nPlaneOffset + nRow];
if (nOffset == -1)
goto bad_input;
else
{
sal_uInt32 nFirstLast = pCns116431992Data[nOffset++];
sal_uInt32 nFirst = nFirstLast & 0xFF;
sal_uInt32 nLast = nFirstLast >> 8;
nChar -= 0xA0;
if (nChar >= nFirst && nChar <= nLast)
{
sal_uInt32 nUnicode
= pCns116431992Data[nOffset + (nChar - nFirst)];
if (nUnicode == 0xFFFF)
goto bad_input;
else if (ImplIsHighSurrogate(nUnicode))
if (pDestBufEnd - pDestBufPtr >= 2)
{
nOffset += nLast - nFirst + 1;
nFirst = pCns116431992Data[nOffset++];
*pDestBufPtr++ = (sal_Unicode) nUnicode;
*pDestBufPtr++
= (sal_Unicode)
pCns116431992Data[
nOffset + (nChar - nFirst)];
}
else
goto no_output;
else
if (pDestBufPtr != pDestBufEnd)
*pDestBufPtr++ = (sal_Unicode) nUnicode;
else
goto no_output;
}
else
goto bad_input;
eState = IMPL_EUC_TW_TO_UNICODE_STATE_0;
}
}
continue;
}
bad_input:
switch (ImplHandleBadInputTextToUnicodeConversion(
bUndefined, sal_True, 0, nFlags, &pDestBufPtr, pDestBufEnd,
&nInfo))
{
case IMPL_BAD_INPUT_STOP:
eState = IMPL_EUC_TW_TO_UNICODE_STATE_0;
break;
case IMPL_BAD_INPUT_CONTINUE:
eState = IMPL_EUC_TW_TO_UNICODE_STATE_0;
continue;
case IMPL_BAD_INPUT_NO_OUTPUT:
goto no_output;
}
break;
no_output:
--pSrcBuf;
nInfo |= RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOSMALL;
break;
}
if (eState != IMPL_EUC_TW_TO_UNICODE_STATE_0
&& (nInfo & (RTL_TEXTTOUNICODE_INFO_ERROR
| RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOSMALL))
== 0)
if ((nFlags & RTL_TEXTTOUNICODE_FLAGS_FLUSH) == 0)
nInfo |= RTL_TEXTTOUNICODE_INFO_SRCBUFFERTOSMALL;
else
switch (ImplHandleBadInputTextToUnicodeConversion(
sal_False, sal_True, 0, nFlags, &pDestBufPtr,
pDestBufEnd, &nInfo))
{
case IMPL_BAD_INPUT_STOP:
case IMPL_BAD_INPUT_CONTINUE:
eState = IMPL_EUC_TW_TO_UNICODE_STATE_0;
break;
case IMPL_BAD_INPUT_NO_OUTPUT:
nInfo |= RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOSMALL;
break;
}
if (pContext)
{
((ImplEucTwToUnicodeContext *) pContext)->m_eState = eState;
((ImplEucTwToUnicodeContext *) pContext)->m_nPlane = nPlane;
((ImplEucTwToUnicodeContext *) pContext)->m_nRow = nRow;
}
if (pInfo)
*pInfo = nInfo;
if (pSrcCvtBytes)
*pSrcCvtBytes = nConverted;
return pDestBufPtr - pDestBuf;
}
sal_Size ImplConvertUnicodeToEucTw(ImplTextConverterData const * pData,
void * pContext,
sal_Unicode const * pSrcBuf,
sal_Size nSrcChars,
sal_Char * pDestBuf,
sal_Size nDestBytes,
sal_uInt32 nFlags,
sal_uInt32 * pInfo,
sal_Size * pSrcCvtChars)
{
sal_uInt8 const * pCns116431992Data
= ((ImplEucTwConverterData const *) pData)->
m_pUnicodeToCns116431992Data;
sal_Int32 const * pCns116431992PageOffsets
= ((ImplEucTwConverterData const *) pData)->
m_pUnicodeToCns116431992PageOffsets;
sal_Int32 const * pCns116431992PlaneOffsets
= ((ImplEucTwConverterData const *) pData)->
m_pUnicodeToCns116431992PlaneOffsets;
sal_Unicode nHighSurrogate = 0;
sal_uInt32 nInfo = 0;
sal_Size nConverted = 0;
sal_Char * pDestBufPtr = pDestBuf;
sal_Char * pDestBufEnd = pDestBuf + nDestBytes;
if (pContext)
nHighSurrogate
= ((ImplUnicodeToTextContext *) pContext)->m_nHighSurrogate;
for (; nConverted < nSrcChars; ++nConverted)
{
sal_Bool bUndefined = sal_True;
sal_uInt32 nChar = *pSrcBuf++;
if (nHighSurrogate == 0)
{
if (ImplIsHighSurrogate(nChar))
{
nHighSurrogate = (sal_Unicode) nChar;
continue;
}
}
else if (ImplIsLowSurrogate(nChar))
nChar = ImplCombineSurrogates(nHighSurrogate, nChar);
else
{
bUndefined = sal_False;
goto bad_input;
}
if (ImplIsLowSurrogate(nChar) || ImplIsNoncharacter(nChar))
{
bUndefined = sal_False;
goto bad_input;
}
if (nChar < 0x80)
if (pDestBufPtr != pDestBufEnd)
*pDestBufPtr++ = (sal_Char) nChar;
else
goto no_output;
else
{
sal_Int32 nOffset = pCns116431992PlaneOffsets[nChar >> 16];
sal_uInt32 nFirst;
sal_uInt32 nLast;
sal_uInt32 nPlane;
if (nOffset == -1)
goto bad_input;
nOffset
= pCns116431992PageOffsets[nOffset + ((nChar & 0xFF00) >> 8)];
if (nOffset == -1)
goto bad_input;
nFirst = pCns116431992Data[nOffset++];
nLast = pCns116431992Data[nOffset++];
nChar &= 0xFF;
if (nChar < nFirst || nChar > nLast)
goto bad_input;
nOffset += 3 * (nChar - nFirst);
nPlane = pCns116431992Data[nOffset++];
if (nPlane == 0)
goto bad_input;
if (pDestBufEnd - pDestBufPtr < (nPlane == 1 ? 2 : 4))
goto no_output;
if (nPlane != 1)
{
*pDestBufPtr++ = (sal_Char) 0x8E;
*pDestBufPtr++ = (sal_Char) (0xA0 + nPlane);
}
*pDestBufPtr++ = (sal_Char) (0xA0 + pCns116431992Data[nOffset++]);
*pDestBufPtr++ = (sal_Char) (0xA0 + pCns116431992Data[nOffset]);
}
nHighSurrogate = 0;
continue;
bad_input:
switch (ImplHandleBadInputUnicodeToTextConversion(bUndefined,
nChar,
nFlags,
&pDestBufPtr,
pDestBufEnd,
&nInfo,
NULL,
0,
NULL))
{
case IMPL_BAD_INPUT_STOP:
nHighSurrogate = 0;
break;
case IMPL_BAD_INPUT_CONTINUE:
nHighSurrogate = 0;
continue;
case IMPL_BAD_INPUT_NO_OUTPUT:
goto no_output;
}
break;
no_output:
--pSrcBuf;
nInfo |= RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL;
break;
}
if (nHighSurrogate != 0
&& (nInfo & (RTL_UNICODETOTEXT_INFO_ERROR
| RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL))
== 0)
if ((nFlags & RTL_UNICODETOTEXT_FLAGS_FLUSH) != 0)
nInfo |= RTL_UNICODETOTEXT_INFO_SRCBUFFERTOSMALL;
else
switch (ImplHandleBadInputUnicodeToTextConversion(sal_False,
0,
nFlags,
&pDestBufPtr,
pDestBufEnd,
&nInfo,
NULL,
0,
NULL))
{
case IMPL_BAD_INPUT_STOP:
case IMPL_BAD_INPUT_CONTINUE:
nHighSurrogate = 0;
break;
case IMPL_BAD_INPUT_NO_OUTPUT:
nInfo |= RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL;
break;
}
if (pContext)
((ImplUnicodeToTextContext *) pContext)->m_nHighSurrogate
= nHighSurrogate;
if (pInfo)
*pInfo = nInfo;
if (pSrcCvtChars)
*pSrcCvtChars = nConverted;
return pDestBufPtr - pDestBuf;
}
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