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office-gobmx/sal/textenc/convertiso2022kr.c
Rüdiger Timm 060bb7772e INTEGRATION: CWS changefileheader (1.6.268); FILE MERGED 
2008/04/01 12:34:21 thb 1.6.268.2: #i85898# Stripping all external header guards
2008/03/31 13:24:11 rt 1.6.268.1: #i87441# Change license header to LPGL v3.
2008-04-10 11:35:40 +00:00

530 lines
18 KiB
C
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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2008 by Sun Microsystems, Inc.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: convertiso2022kr.c,v $
* $Revision: 1.7 $
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#include "convertiso2022kr.h"
#include "context.h"
#include "converter.h"
#include "tenchelp.h"
#include "unichars.h"
#include "rtl/alloc.h"
#include "rtl/textcvt.h"
#include "sal/types.h"
typedef enum /* order is important: */
{
IMPL_ISO_2022_KR_TO_UNICODE_STATE_ASCII,
IMPL_ISO_2022_KR_TO_UNICODE_STATE_1001,
IMPL_ISO_2022_KR_TO_UNICODE_STATE_1001_2,
IMPL_ISO_2022_KR_TO_UNICODE_STATE_ESC,
IMPL_ISO_2022_KR_TO_UNICODE_STATE_ESC_DOLLAR,
IMPL_ISO_2022_KR_TO_UNICODE_STATE_ESC_DOLLAR_RPAREN
} ImplIso2022KrToUnicodeState;
typedef struct
{
ImplIso2022KrToUnicodeState m_eState;
sal_uInt32 m_nRow;
} ImplIso2022KrToUnicodeContext;
typedef enum
{
IMPL_UNICODE_TO_ISO_2022_KR_SET_NONE,
IMPL_UNICODE_TO_ISO_2022_KR_SET_ASCII,
IMPL_UNICODE_TO_ISO_2022_KR_SET_1001
} ImplUnicodeToIso2022KrSet;
typedef struct
{
sal_Unicode m_nHighSurrogate;
ImplUnicodeToIso2022KrSet m_eSet;
} ImplUnicodeToIso2022KrContext;
void * ImplCreateIso2022KrToUnicodeContext(void)
{
void * pContext
= rtl_allocateMemory(sizeof (ImplIso2022KrToUnicodeContext));
((ImplIso2022KrToUnicodeContext *) pContext)->m_eState
= IMPL_ISO_2022_KR_TO_UNICODE_STATE_ASCII;
return pContext;
}
void ImplResetIso2022KrToUnicodeContext(void * pContext)
{
if (pContext)
((ImplIso2022KrToUnicodeContext *) pContext)->m_eState
= IMPL_ISO_2022_KR_TO_UNICODE_STATE_ASCII;
}
sal_Size ImplConvertIso2022KrToUnicode(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)
{
ImplDBCSToUniLeadTab const * pKsX1001Data
= ((ImplIso2022KrConverterData const *) pData)->
m_pKsX1001ToUnicodeData;
ImplIso2022KrToUnicodeState eState
= IMPL_ISO_2022_KR_TO_UNICODE_STATE_ASCII;
sal_uInt32 nRow = 0;
sal_uInt32 nInfo = 0;
sal_Size nConverted = 0;
sal_Unicode * pDestBufPtr = pDestBuf;
sal_Unicode * pDestBufEnd = pDestBuf + nDestChars;
if (pContext)
{
eState = ((ImplIso2022KrToUnicodeContext *) pContext)->m_eState;
nRow = ((ImplIso2022KrToUnicodeContext *) pContext)->m_nRow;
}
for (; nConverted < nSrcBytes; ++nConverted)
{
sal_Bool bUndefined = sal_True;
sal_uInt32 nChar = *(sal_uChar const *) pSrcBuf++;
switch (eState)
{
case IMPL_ISO_2022_KR_TO_UNICODE_STATE_ASCII:
if (nChar == 0x0E) /* SO */
eState = IMPL_ISO_2022_KR_TO_UNICODE_STATE_1001;
else if (nChar == 0x1B) /* ESC */
eState = IMPL_ISO_2022_KR_TO_UNICODE_STATE_ESC;
else if (nChar < 0x80)
if (pDestBufPtr != pDestBufEnd)
*pDestBufPtr++ = (sal_Unicode) nChar;
else
goto no_output;
else
{
bUndefined = sal_False;
goto bad_input;
}
break;
case IMPL_ISO_2022_KR_TO_UNICODE_STATE_1001:
if (nChar == 0x0F) /* SI */
eState = IMPL_ISO_2022_KR_TO_UNICODE_STATE_ASCII;
else if (nChar >= 0x21 && nChar <= 0x7E)
{
nRow = nChar + 0x80;
eState = IMPL_ISO_2022_KR_TO_UNICODE_STATE_1001_2;
}
else
{
bUndefined = sal_False;
goto bad_input;
}
break;
case IMPL_ISO_2022_KR_TO_UNICODE_STATE_1001_2:
if (nChar >= 0x21 && nChar <= 0x7E)
{
sal_uInt16 nUnicode = 0;
sal_uInt32 nFirst = pKsX1001Data[nRow].mnTrailStart;
nChar += 0x80;
if (nChar >= nFirst && nChar <= pKsX1001Data[nRow].mnTrailEnd)
nUnicode = pKsX1001Data[nRow].
mpToUniTrailTab[nChar - nFirst];
if (nUnicode != 0)
if (pDestBufPtr != pDestBufEnd)
{
*pDestBufPtr++ = (sal_Unicode) nUnicode;
eState = IMPL_ISO_2022_KR_TO_UNICODE_STATE_1001;
}
else
goto no_output;
else
goto bad_input;
}
else
{
bUndefined = sal_False;
goto bad_input;
}
break;
case IMPL_ISO_2022_KR_TO_UNICODE_STATE_ESC:
if (nChar == 0x24) /* $ */
eState = IMPL_ISO_2022_KR_TO_UNICODE_STATE_ESC_DOLLAR;
else
{
bUndefined = sal_False;
goto bad_input;
}
break;
case IMPL_ISO_2022_KR_TO_UNICODE_STATE_ESC_DOLLAR:
if (nChar == 0x29) /* ) */
eState = IMPL_ISO_2022_KR_TO_UNICODE_STATE_ESC_DOLLAR_RPAREN;
else
{
bUndefined = sal_False;
goto bad_input;
}
break;
case IMPL_ISO_2022_KR_TO_UNICODE_STATE_ESC_DOLLAR_RPAREN:
if (nChar == 0x43) /* C */
eState = IMPL_ISO_2022_KR_TO_UNICODE_STATE_ASCII;
else
{
bUndefined = sal_False;
goto bad_input;
}
break;
}
continue;
bad_input:
switch (ImplHandleBadInputTextToUnicodeConversion(
bUndefined, sal_True, 0, nFlags, &pDestBufPtr, pDestBufEnd,
&nInfo))
{
case IMPL_BAD_INPUT_STOP:
eState = IMPL_ISO_2022_KR_TO_UNICODE_STATE_ASCII;
break;
case IMPL_BAD_INPUT_CONTINUE:
eState = IMPL_ISO_2022_KR_TO_UNICODE_STATE_ASCII;
continue;
case IMPL_BAD_INPUT_NO_OUTPUT:
goto no_output;
}
break;
no_output:
--pSrcBuf;
nInfo |= RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOSMALL;
break;
}
if (eState > IMPL_ISO_2022_KR_TO_UNICODE_STATE_1001
&& (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_ISO_2022_KR_TO_UNICODE_STATE_ASCII;
break;
case IMPL_BAD_INPUT_NO_OUTPUT:
nInfo |= RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOSMALL;
break;
}
}
if (pContext)
{
((ImplIso2022KrToUnicodeContext *) pContext)->m_eState = eState;
((ImplIso2022KrToUnicodeContext *) pContext)->m_nRow = nRow;
}
if (pInfo)
*pInfo = nInfo;
if (pSrcCvtBytes)
*pSrcCvtBytes = nConverted;
return pDestBufPtr - pDestBuf;
}
void * ImplCreateUnicodeToIso2022KrContext(void)
{
void * pContext
= rtl_allocateMemory(sizeof (ImplUnicodeToIso2022KrContext));
((ImplUnicodeToIso2022KrContext *) pContext)->m_nHighSurrogate = 0;
((ImplUnicodeToIso2022KrContext *) pContext)->m_eSet
= IMPL_UNICODE_TO_ISO_2022_KR_SET_NONE;
return pContext;
}
void ImplResetUnicodeToIso2022KrContext(void * pContext)
{
if (pContext)
{
((ImplUnicodeToIso2022KrContext *) pContext)->m_nHighSurrogate = 0;
((ImplUnicodeToIso2022KrContext *) pContext)->m_eSet
= IMPL_UNICODE_TO_ISO_2022_KR_SET_NONE;
}
}
sal_Size ImplConvertUnicodeToIso2022Kr(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)
{
ImplUniToDBCSHighTab const * pKsX1001Data
= ((ImplIso2022KrConverterData const *) pData)->
m_pUnicodeToKsX1001Data;
sal_Unicode nHighSurrogate = 0;
ImplUnicodeToIso2022KrSet eSet = IMPL_UNICODE_TO_ISO_2022_KR_SET_NONE;
sal_uInt32 nInfo = 0;
sal_Size nConverted = 0;
sal_Char * pDestBufPtr = pDestBuf;
sal_Char * pDestBufEnd = pDestBuf + nDestBytes;
sal_Bool bWritten;
if (pContext)
{
nHighSurrogate
= ((ImplUnicodeToIso2022KrContext *) pContext)->m_nHighSurrogate;
eSet = ((ImplUnicodeToIso2022KrContext *) pContext)->m_eSet;
}
if (eSet == IMPL_UNICODE_TO_ISO_2022_KR_SET_NONE)
{
if (pDestBufEnd - pDestBufPtr >= 4)
{
*pDestBufPtr++ = 0x1B; /* ESC */
*pDestBufPtr++ = 0x24; /* $ */
*pDestBufPtr++ = 0x29; /* ) */
*pDestBufPtr++ = 0x43; /* C */
eSet = IMPL_UNICODE_TO_ISO_2022_KR_SET_ASCII;
}
else
nInfo |= RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL;
}
if ((nInfo & RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL) == 0)
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 == 0x0A || nChar == 0x0D) /* LF, CR */
{
if (eSet == IMPL_UNICODE_TO_ISO_2022_KR_SET_1001)
{
if (pDestBufPtr != pDestBufEnd)
{
*pDestBufPtr++ = 0x0F; /* SI */
eSet = IMPL_UNICODE_TO_ISO_2022_KR_SET_ASCII;
}
else
goto no_output;
}
if (pDestBufPtr != pDestBufEnd)
*pDestBufPtr++ = (sal_Char) nChar;
else
goto no_output;
}
else if (nChar == 0x0E || nChar == 0x0F || nChar == 0x1B)
goto bad_input;
else if (nChar < 0x80)
{
if (eSet == IMPL_UNICODE_TO_ISO_2022_KR_SET_1001)
{
if (pDestBufPtr != pDestBufEnd)
{
*pDestBufPtr++ = 0x0F; /* SI */
eSet = IMPL_UNICODE_TO_ISO_2022_KR_SET_ASCII;
}
else
goto no_output;
}
if (pDestBufPtr != pDestBufEnd)
*pDestBufPtr++ = (sal_Char) nChar;
else
goto no_output;
}
else
{
sal_uInt16 nBytes = 0;
sal_uInt32 nIndex1 = nChar >> 8;
if (nIndex1 < 0x100)
{
sal_uInt32 nIndex2 = nChar & 0xFF;
sal_uInt32 nFirst = pKsX1001Data[nIndex1].mnLowStart;
if (nIndex2 >= nFirst
&& nIndex2 <= pKsX1001Data[nIndex1].mnLowEnd)
nBytes = pKsX1001Data[nIndex1].
mpToUniTrailTab[nIndex2 - nFirst];
}
if (nBytes != 0)
{
if (eSet == IMPL_UNICODE_TO_ISO_2022_KR_SET_ASCII)
{
if (pDestBufPtr != pDestBufEnd)
{
*pDestBufPtr++ = 0x0E; /* SO */
eSet = IMPL_UNICODE_TO_ISO_2022_KR_SET_1001;
}
else
goto no_output;
}
if (pDestBufEnd - pDestBufPtr >= 2)
{
*pDestBufPtr++ = (sal_Char) ((nBytes >> 8) & 0x7F);
*pDestBufPtr++ = (sal_Char) (nBytes & 0x7F);
}
else
goto no_output;
}
else
goto bad_input;
}
nHighSurrogate = 0;
continue;
bad_input:
switch (ImplHandleBadInputUnicodeToTextConversion(
bUndefined,
nChar,
nFlags,
&pDestBufPtr,
pDestBufEnd,
&nInfo,
"\x0F", /* SI */
eSet == IMPL_UNICODE_TO_ISO_2022_KR_SET_ASCII ? 0 : 1,
&bWritten))
{
case IMPL_BAD_INPUT_STOP:
nHighSurrogate = 0;
break;
case IMPL_BAD_INPUT_CONTINUE:
if (bWritten)
eSet = IMPL_UNICODE_TO_ISO_2022_KR_SET_ASCII;
nHighSurrogate = 0;
continue;
case IMPL_BAD_INPUT_NO_OUTPUT:
goto no_output;
}
break;
no_output:
--pSrcBuf;
nInfo |= RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL;
break;
}
if ((nInfo & (RTL_UNICODETOTEXT_INFO_ERROR
| RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL))
== 0)
{
sal_Bool bFlush = sal_True;
if (nHighSurrogate != 0)
{
if ((nFlags & RTL_UNICODETOTEXT_FLAGS_FLUSH) != 0)
nInfo |= RTL_UNICODETOTEXT_INFO_SRCBUFFERTOSMALL;
else
switch (ImplHandleBadInputUnicodeToTextConversion(
sal_False,
0,
nFlags,
&pDestBufPtr,
pDestBufEnd,
&nInfo,
"\x0F", /* SI */
eSet == IMPL_UNICODE_TO_ISO_2022_KR_SET_ASCII ?
0 : 1,
&bWritten))
{
case IMPL_BAD_INPUT_STOP:
nHighSurrogate = 0;
bFlush = sal_False;
break;
case IMPL_BAD_INPUT_CONTINUE:
if (bWritten)
eSet = IMPL_UNICODE_TO_ISO_2022_KR_SET_ASCII;
nHighSurrogate = 0;
break;
case IMPL_BAD_INPUT_NO_OUTPUT:
nInfo |= RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL;
break;
}
}
if (bFlush
&& eSet == IMPL_UNICODE_TO_ISO_2022_KR_SET_1001
&& (nFlags & RTL_UNICODETOTEXT_FLAGS_FLUSH) != 0)
{
if (pDestBufPtr != pDestBufEnd)
{
*pDestBufPtr++ = 0x0F; /* SI */
eSet = IMPL_UNICODE_TO_ISO_2022_KR_SET_ASCII;
}
else
nInfo |= RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL;
}
}
if (pContext)
{
((ImplUnicodeToIso2022KrContext *) pContext)->m_nHighSurrogate
= nHighSurrogate;
((ImplUnicodeToIso2022KrContext *) pContext)->m_eSet = eSet;
}
if (pInfo)
*pInfo = nInfo;
if (pSrcCvtChars)
*pSrcCvtChars = nConverted;
return pDestBufPtr - pDestBuf;
}
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