/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* * This file is part of the LibreOffice project. * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. * * This file incorporates work covered by the following license notice: * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed * with this work for additional information regarding copyright * ownership. The ASF licenses this file to you under the Apache * License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 . */ #include #include #include "handleundefinedunicodetotextchar.hxx" #include "tenchelp.hxx" #include "unichars.hxx" /* DBCS to Unicode conversion routine use a lead table for the first byte, */ /* where we determine the trail table or for single byte chars the unicode */ /* value. We have for all lead byte a separate table, because we can */ /* then share many tables for different charset encodings. */ sal_Size ImplDBCSToUnicode( const void* pData, SAL_UNUSED_PARAMETER void*, const char* pSrcBuf, sal_Size nSrcBytes, sal_Unicode* pDestBuf, sal_Size nDestChars, sal_uInt32 nFlags, sal_uInt32* pInfo, sal_Size* pSrcCvtBytes ) { unsigned char cTrail; sal_Unicode cConv; const ImplDBCSToUniLeadTab* pLeadEntry; const ImplDBCSConvertData* pConvertData = static_cast(pData); const ImplDBCSToUniLeadTab* pLeadTab = pConvertData->mpToUniLeadTab; sal_Unicode* pEndDestBuf; const char* pEndSrcBuf; char const * startOfCurrentChar = pSrcBuf; *pInfo = 0; pEndDestBuf = pDestBuf+nDestChars; pEndSrcBuf = pSrcBuf+nSrcBytes; while ( pSrcBuf < pEndSrcBuf ) { unsigned char cLead = static_cast(*pSrcBuf); /* get entry for the lead byte */ pLeadEntry = pLeadTab+cLead; /* SingleByte char? */ if (pLeadEntry->mpToUniTrailTab == nullptr || cLead < pConvertData->mnLeadStart || cLead > pConvertData->mnLeadEnd) { cConv = pLeadEntry->mnUniChar; if ( !cConv && (cLead != 0) ) { *pInfo |= RTL_TEXTTOUNICODE_INFO_UNDEFINED; if ( (nFlags & RTL_TEXTTOUNICODE_FLAGS_UNDEFINED_MASK) == RTL_TEXTTOUNICODE_FLAGS_UNDEFINED_ERROR ) { if ((nFlags & RTL_TEXTTOUNICODE_FLAGS_FLUSH) == 0) { ++pSrcBuf; } else { pSrcBuf = startOfCurrentChar; } *pInfo |= RTL_TEXTTOUNICODE_INFO_ERROR; break; } if ( (nFlags & RTL_TEXTTOUNICODE_FLAGS_UNDEFINED_MASK) == RTL_TEXTTOUNICODE_FLAGS_UNDEFINED_IGNORE ) { pSrcBuf++; startOfCurrentChar = pSrcBuf; continue; } cConv = ImplGetUndefinedUnicodeChar(cLead, nFlags); } } else { /* Source buffer too small */ if ( pSrcBuf +1 == pEndSrcBuf ) { if ( (nFlags & RTL_TEXTTOUNICODE_FLAGS_FLUSH) == 0 ) { *pInfo |= RTL_TEXTTOUNICODE_INFO_ERROR | RTL_TEXTTOUNICODE_INFO_SRCBUFFERTOOSMALL; break; } cConv = 0; } else { pSrcBuf++; cTrail = static_cast(*pSrcBuf); if ( (cTrail >= pLeadEntry->mnTrailStart) && (cTrail <= pLeadEntry->mnTrailEnd) ) cConv = pLeadEntry->mpToUniTrailTab[cTrail-pLeadEntry->mnTrailStart]; else cConv = 0; if ( !cConv ) { /* EUDC Ranges */ sal_uInt16 i; const ImplDBCSEUDCData* pEUDCTab = pConvertData->mpEUDCTab; for ( i = 0; i < pConvertData->mnEUDCCount; i++ ) { if ( (cLead >= pEUDCTab->mnLeadStart) && (cLead <= pEUDCTab->mnLeadEnd) ) { if ( (cTrail >= pEUDCTab->mnTrail1Start) && (cTrail <= pEUDCTab->mnTrail1End) ) { cConv = pEUDCTab->mnUniStart+ ((cLead-pEUDCTab->mnLeadStart)*pEUDCTab->mnTrailRangeCount)+ (cTrail-pEUDCTab->mnTrail1Start); break; } sal_uInt16 nTrailCount = pEUDCTab->mnTrail1End-pEUDCTab->mnTrail1Start+1; if ( (pEUDCTab->mnTrailCount >= 2) && (cTrail >= pEUDCTab->mnTrail2Start) && (cTrail <= pEUDCTab->mnTrail2End) ) { cConv = pEUDCTab->mnUniStart+ ((cLead-pEUDCTab->mnLeadStart)*pEUDCTab->mnTrailRangeCount)+ nTrailCount+ (cTrail-pEUDCTab->mnTrail2Start); break; } nTrailCount = pEUDCTab->mnTrail2End-pEUDCTab->mnTrail2Start+1; if ( (pEUDCTab->mnTrailCount >= 3) && (cTrail >= pEUDCTab->mnTrail3Start) && (cTrail <= pEUDCTab->mnTrail3End) ) { cConv = pEUDCTab->mnUniStart+ ((cLead-pEUDCTab->mnLeadStart)*pEUDCTab->mnTrailRangeCount)+ nTrailCount+ (cTrail-pEUDCTab->mnTrail3Start); break; } } pEUDCTab++; } if ( !cConv ) { /* We compare the full range of the trail we defined, */ /* which can often be greater than the limit. We do this */ /* so that extensions that don't consider encodings */ /* correctly treat double-byte characters as a single */ /* character as much as possible. */ if (cLead < pConvertData->mnLeadStart || cLead > pConvertData->mnLeadEnd || cTrail < pConvertData->mnTrailStart || cTrail > pConvertData->mnTrailEnd) { *pInfo |= RTL_TEXTTOUNICODE_INFO_INVALID; if ( (nFlags & RTL_TEXTTOUNICODE_FLAGS_INVALID_MASK) == RTL_TEXTTOUNICODE_FLAGS_INVALID_ERROR ) { if ((nFlags & RTL_TEXTTOUNICODE_FLAGS_FLUSH) == 0) { ++pSrcBuf; } else { pSrcBuf = startOfCurrentChar; } *pInfo |= RTL_TEXTTOUNICODE_INFO_ERROR; break; } if ( (nFlags & RTL_TEXTTOUNICODE_FLAGS_INVALID_MASK) == RTL_TEXTTOUNICODE_FLAGS_INVALID_IGNORE ) { pSrcBuf++; startOfCurrentChar = pSrcBuf; continue; } cConv = RTL_TEXTENC_UNICODE_REPLACEMENT_CHARACTER; } } } } if ( !cConv ) { *pInfo |= RTL_TEXTTOUNICODE_INFO_MBUNDEFINED; if ( (nFlags & RTL_TEXTTOUNICODE_FLAGS_MBUNDEFINED_MASK) == RTL_TEXTTOUNICODE_FLAGS_MBUNDEFINED_ERROR ) { if ((nFlags & RTL_TEXTTOUNICODE_FLAGS_FLUSH) == 0) { ++pSrcBuf; } else { pSrcBuf = startOfCurrentChar; } *pInfo |= RTL_TEXTTOUNICODE_INFO_ERROR; break; } if ( (nFlags & RTL_TEXTTOUNICODE_FLAGS_MBUNDEFINED_MASK) == RTL_TEXTTOUNICODE_FLAGS_MBUNDEFINED_IGNORE ) { pSrcBuf++; startOfCurrentChar = pSrcBuf; continue; } cConv = RTL_TEXTENC_UNICODE_REPLACEMENT_CHARACTER; } } if ( pDestBuf == pEndDestBuf ) { *pInfo |= RTL_TEXTTOUNICODE_INFO_ERROR | RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOOSMALL; break; } *pDestBuf = cConv; pDestBuf++; pSrcBuf++; startOfCurrentChar = pSrcBuf; } *pSrcCvtBytes = nSrcBytes - (pEndSrcBuf-pSrcBuf); return (nDestChars - (pEndDestBuf-pDestBuf)); } sal_Size ImplUnicodeToDBCS( const void* pData, SAL_UNUSED_PARAMETER void*, const sal_Unicode* pSrcBuf, sal_Size nSrcChars, char* pDestBuf, sal_Size nDestBytes, sal_uInt32 nFlags, sal_uInt32* pInfo, sal_Size* pSrcCvtChars ) { sal_uInt16 cConv; sal_Unicode c; const ImplUniToDBCSHighTab* pHighEntry; const ImplDBCSConvertData* pConvertData = static_cast(pData); const ImplUniToDBCSHighTab* pHighTab = pConvertData->mpToDBCSHighTab; char* pEndDestBuf; const sal_Unicode* pEndSrcBuf; bool bCheckRange = pConvertData->mnLeadStart != 0 || pConvertData->mnLeadEnd != 0xFF; /* this statement has the effect that this extra check is only done for EUC-KR, which uses the MS-949 tables, but does not support the full range of MS-949 */ *pInfo = 0; pEndDestBuf = pDestBuf+nDestBytes; pEndSrcBuf = pSrcBuf+nSrcChars; while ( pSrcBuf < pEndSrcBuf ) { c = *pSrcBuf; unsigned char nHighChar = static_cast((c >> 8) & 0xFF); unsigned char nLowChar = static_cast(c & 0xFF); /* get entry for the high byte */ pHighEntry = pHighTab+nHighChar; /* is low byte in the table range */ if ( (nLowChar >= pHighEntry->mnLowStart) && (nLowChar <= pHighEntry->mnLowEnd) ) { cConv = pHighEntry->mpToUniTrailTab[nLowChar-pHighEntry->mnLowStart]; if (bCheckRange && cConv > 0x7F && ((cConv >> 8) < pConvertData->mnLeadStart || (cConv >> 8) > pConvertData->mnLeadEnd || (cConv & 0xFF) < pConvertData->mnTrailStart || (cConv & 0xFF) > pConvertData->mnTrailEnd)) cConv = 0; } else cConv = 0; if (cConv == 0 && c != 0) { /* Map to EUDC ranges: */ ImplDBCSEUDCData const * pEUDCTab = pConvertData->mpEUDCTab; sal_uInt32 i; for (i = 0; i < pConvertData->mnEUDCCount; ++i) { if (c >= pEUDCTab->mnUniStart && c <= pEUDCTab->mnUniEnd) { sal_uInt32 nIndex = c - pEUDCTab->mnUniStart; sal_uInt32 nLeadOff = nIndex / pEUDCTab->mnTrailRangeCount; sal_uInt32 nTrailOff = nIndex % pEUDCTab->mnTrailRangeCount; sal_uInt32 nSize; cConv = static_cast((pEUDCTab->mnLeadStart + nLeadOff) << 8); nSize = pEUDCTab->mnTrail1End - pEUDCTab->mnTrail1Start + 1; if (nTrailOff < nSize) { cConv |= pEUDCTab->mnTrail1Start + nTrailOff; break; } nTrailOff -= nSize; nSize = pEUDCTab->mnTrail2End - pEUDCTab->mnTrail2Start + 1; if (nTrailOff < nSize) { cConv |= pEUDCTab->mnTrail2Start + nTrailOff; break; } nTrailOff -= nSize; cConv |= pEUDCTab->mnTrail3Start + nTrailOff; break; } pEUDCTab++; } /* FIXME * SB: Not sure why this is in here. Plus, it does not work as * intended when (c & 0xFF) == 0, because the next !cConv check * will then think c has not yet been converted... */ if (c >= RTL_TEXTCVT_BYTE_PRIVATE_START && c <= RTL_TEXTCVT_BYTE_PRIVATE_END) { if ( nFlags & RTL_UNICODETOTEXT_FLAGS_PRIVATE_MAPTO0 ) cConv = static_cast< char >(static_cast< unsigned char >(c & 0xFF)); } } if (cConv == 0 && c != 0) { if ( nFlags & RTL_UNICODETOTEXT_FLAGS_UNDEFINED_REPLACE ) { /* !!! */ } if ( nFlags & RTL_UNICODETOTEXT_FLAGS_UNDEFINED_REPLACESTR ) { /* !!! */ } /* Handle undefined and surrogates characters */ /* (all surrogates characters are undefined) */ if (sal::detail::textenc::handleUndefinedUnicodeToTextChar( &pSrcBuf, pEndSrcBuf, &pDestBuf, pEndDestBuf, nFlags, pInfo)) continue; break; } /* SingleByte */ if ( !(cConv & 0xFF00) ) { if ( pDestBuf == pEndDestBuf ) { *pInfo |= RTL_UNICODETOTEXT_INFO_ERROR | RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL; break; } *pDestBuf = static_cast< char >(static_cast< unsigned char >(cConv & 0xFF)); pDestBuf++; } else { if ( pDestBuf+1 >= pEndDestBuf ) { *pInfo |= RTL_UNICODETOTEXT_INFO_ERROR | RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL; break; } *pDestBuf = static_cast< char >(static_cast< unsigned char >((cConv >> 8) & 0xFF)); pDestBuf++; *pDestBuf = static_cast< char >(static_cast< unsigned char >(cConv & 0xFF)); pDestBuf++; } pSrcBuf++; } *pSrcCvtChars = nSrcChars - (pEndSrcBuf-pSrcBuf); return (nDestBytes - (pEndDestBuf-pDestBuf)); } #define JIS_EUC_LEAD_OFF 0x80 #define JIS_EUC_TRAIL_OFF 0x80 sal_Size ImplEUCJPToUnicode( const void* pData, SAL_UNUSED_PARAMETER void*, const char* pSrcBuf, sal_Size nSrcBytes, sal_Unicode* pDestBuf, sal_Size nDestChars, sal_uInt32 nFlags, sal_uInt32* pInfo, sal_Size* pSrcCvtBytes ) { unsigned char cLead = '\0'; unsigned char cTrail = '\0'; sal_Unicode cConv; const ImplDBCSToUniLeadTab* pLeadEntry; const ImplDBCSToUniLeadTab* pLeadTab; const ImplEUCJPConvertData* pConvertData = static_cast(pData); sal_Unicode* pEndDestBuf; const char* pEndSrcBuf; char const * startOfCurrentChar = pSrcBuf; *pInfo = 0; pEndDestBuf = pDestBuf+nDestChars; pEndSrcBuf = pSrcBuf+nSrcBytes; while ( pSrcBuf < pEndSrcBuf ) { unsigned char c = static_cast(*pSrcBuf); /* ASCII */ if ( c <= 0x7F ) cConv = c; else { /* SS2 - Half-width katakana */ /* 8E + A1-DF */ if ( c == 0x8E ) { /* Source buffer too small */ if ( pSrcBuf + 1 == pEndSrcBuf ) { *pInfo |= RTL_TEXTTOUNICODE_INFO_SRCBUFFERTOOSMALL; break; } pSrcBuf++; c = static_cast(*pSrcBuf); if ( (c >= 0xA1) && (c <= 0xDF) ) cConv = 0xFF61+(c-0xA1); else { cConv = 0; cLead = 0x8E; cTrail = c; } } else { /* SS3 - JIS 0212-1990 */ /* 8F + A1-FE + A1-FE */ if ( c == 0x8F ) { /* Source buffer too small */ if (pEndSrcBuf - pSrcBuf < 3) { *pInfo |= RTL_TEXTTOUNICODE_INFO_SRCBUFFERTOOSMALL; break; } pSrcBuf++; cLead = static_cast(*pSrcBuf); pSrcBuf++; cTrail = static_cast(*pSrcBuf); pLeadTab = pConvertData->mpJIS0212ToUniLeadTab; } /* CodeSet 2 JIS 0208-1997 */ /* A1-FE + A1-FE */ else { /* Source buffer too small */ if ( pSrcBuf + 1 == pEndSrcBuf ) { *pInfo |= RTL_TEXTTOUNICODE_INFO_SRCBUFFERTOOSMALL; break; } cLead = c; pSrcBuf++; cTrail = static_cast(*pSrcBuf); pLeadTab = pConvertData->mpJIS0208ToUniLeadTab; } /* Undefined Range */ if ( (cLead < JIS_EUC_LEAD_OFF) || (cTrail < JIS_EUC_TRAIL_OFF) ) cConv = 0; else { cLead -= JIS_EUC_LEAD_OFF; cTrail -= JIS_EUC_TRAIL_OFF; pLeadEntry = pLeadTab+cLead; if ( (cTrail >= pLeadEntry->mnTrailStart) && (cTrail <= pLeadEntry->mnTrailEnd) ) cConv = pLeadEntry->mpToUniTrailTab[cTrail-pLeadEntry->mnTrailStart]; else cConv = 0; } } if ( !cConv ) { /* We compare the full range of the trail we defined, */ /* which can often be greater than the limit. We do this */ /* so that extensions that don't consider encodings */ /* correctly treat double-byte characters as a single */ /* character as much as possible. */ if ( (cLead < JIS_EUC_LEAD_OFF) || (cTrail < JIS_EUC_TRAIL_OFF) ) { *pInfo |= RTL_TEXTTOUNICODE_INFO_INVALID; if ( (nFlags & RTL_TEXTTOUNICODE_FLAGS_INVALID_MASK) == RTL_TEXTTOUNICODE_FLAGS_INVALID_ERROR ) { if ((nFlags & RTL_TEXTTOUNICODE_FLAGS_FLUSH) == 0) { ++pSrcBuf; } else { pSrcBuf = startOfCurrentChar; } *pInfo |= RTL_TEXTTOUNICODE_INFO_ERROR; break; } if ( (nFlags & RTL_TEXTTOUNICODE_FLAGS_INVALID_MASK) == RTL_TEXTTOUNICODE_FLAGS_INVALID_IGNORE ) { pSrcBuf++; startOfCurrentChar = pSrcBuf; continue; } cConv = RTL_TEXTENC_UNICODE_REPLACEMENT_CHARACTER; } else { if ((nFlags & RTL_TEXTTOUNICODE_FLAGS_FLUSH) == 0) { ++pSrcBuf; } else { pSrcBuf = startOfCurrentChar; } *pInfo |= RTL_TEXTTOUNICODE_INFO_MBUNDEFINED; if ( (nFlags & RTL_TEXTTOUNICODE_FLAGS_MBUNDEFINED_MASK) == RTL_TEXTTOUNICODE_FLAGS_MBUNDEFINED_ERROR ) { *pInfo |= RTL_TEXTTOUNICODE_INFO_ERROR; break; } if ( (nFlags & RTL_TEXTTOUNICODE_FLAGS_MBUNDEFINED_MASK) == RTL_TEXTTOUNICODE_FLAGS_MBUNDEFINED_IGNORE ) { pSrcBuf++; startOfCurrentChar = pSrcBuf; continue; } cConv = RTL_TEXTENC_UNICODE_REPLACEMENT_CHARACTER; } } } if ( pDestBuf == pEndDestBuf ) { *pInfo |= RTL_TEXTTOUNICODE_INFO_ERROR | RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOOSMALL; break; } *pDestBuf = cConv; pDestBuf++; pSrcBuf++; startOfCurrentChar = pSrcBuf; } *pSrcCvtBytes = nSrcBytes - (pEndSrcBuf-pSrcBuf); return (nDestChars - (pEndDestBuf-pDestBuf)); } sal_Size ImplUnicodeToEUCJP( const void* pData, SAL_UNUSED_PARAMETER void*, const sal_Unicode* pSrcBuf, sal_Size nSrcChars, char* pDestBuf, sal_Size nDestBytes, sal_uInt32 nFlags, sal_uInt32* pInfo, sal_Size* pSrcCvtChars ) { sal_uInt32 cConv; sal_Unicode c; unsigned char nHighChar; unsigned char nLowChar; const ImplUniToDBCSHighTab* pHighEntry; const ImplUniToDBCSHighTab* pHighTab; const ImplEUCJPConvertData* pConvertData = static_cast(pData); char* pEndDestBuf; const sal_Unicode* pEndSrcBuf; *pInfo = 0; pEndDestBuf = pDestBuf+nDestBytes; pEndSrcBuf = pSrcBuf+nSrcChars; while ( pSrcBuf < pEndSrcBuf ) { c = *pSrcBuf; /* ASCII */ if ( c <= 0x7F ) cConv = c; /* Half-width katakana */ else if ( (c >= 0xFF61) && (c <= 0xFF9F) ) cConv = 0x8E00+0xA1+(c-0xFF61); else { nHighChar = static_cast((c >> 8) & 0xFF); nLowChar = static_cast(c & 0xFF); /* JIS 0208 */ pHighTab = pConvertData->mpUniToJIS0208HighTab; pHighEntry = pHighTab+nHighChar; if ( (nLowChar >= pHighEntry->mnLowStart) && (nLowChar <= pHighEntry->mnLowEnd) ) { cConv = pHighEntry->mpToUniTrailTab[nLowChar-pHighEntry->mnLowStart]; if (cConv != 0) cConv |= 0x8080; } else cConv = 0; /* JIS 0212 */ if ( !cConv ) { pHighTab = pConvertData->mpUniToJIS0212HighTab; pHighEntry = pHighTab+nHighChar; if ( (nLowChar >= pHighEntry->mnLowStart) && (nLowChar <= pHighEntry->mnLowEnd) ) { cConv = pHighEntry->mpToUniTrailTab[nLowChar-pHighEntry->mnLowStart]; if (cConv != 0) cConv |= 0x8F8080; } if ( !cConv ) { if ( nFlags & RTL_UNICODETOTEXT_FLAGS_UNDEFINED_REPLACE ) { /* !!! */ } if ( nFlags & RTL_UNICODETOTEXT_FLAGS_UNDEFINED_REPLACESTR ) { /* !!! */ } /* Handle undefined and surrogates characters */ /* (all surrogates characters are undefined) */ if (sal::detail::textenc::handleUndefinedUnicodeToTextChar( &pSrcBuf, pEndSrcBuf, &pDestBuf, pEndDestBuf, nFlags, pInfo)) continue; break; } } } /* SingleByte */ if ( !(cConv & 0xFFFF00) ) { if ( pDestBuf == pEndDestBuf ) { *pInfo |= RTL_UNICODETOTEXT_INFO_ERROR | RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL; break; } *pDestBuf = static_cast< char >(static_cast< unsigned char >(cConv & 0xFF)); pDestBuf++; } /* DoubleByte */ else if ( !(cConv & 0xFF0000) ) { if ( pDestBuf+1 >= pEndDestBuf ) { *pInfo |= RTL_UNICODETOTEXT_INFO_ERROR | RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL; break; } *pDestBuf = static_cast< char >(static_cast< unsigned char >((cConv >> 8) & 0xFF)); pDestBuf++; *pDestBuf = static_cast< char >(static_cast< unsigned char >(cConv & 0xFF)); pDestBuf++; } else { if ( pDestBuf+2 >= pEndDestBuf ) { *pInfo |= RTL_UNICODETOTEXT_INFO_ERROR | RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL; break; } *pDestBuf = static_cast< char >(static_cast< unsigned char >((cConv >> 16) & 0xFF)); pDestBuf++; *pDestBuf = static_cast< char >(static_cast< unsigned char >((cConv >> 8) & 0xFF)); pDestBuf++; *pDestBuf = static_cast< char >(static_cast< unsigned char >(cConv & 0xFF)); pDestBuf++; } pSrcBuf++; } *pSrcCvtChars = nSrcChars - (pEndSrcBuf-pSrcBuf); return (nDestBytes - (pEndDestBuf-pDestBuf)); } /* vim:set shiftwidth=4 softtabstop=4 expandtab: */ 2-4 LibreOffice 核心代码仓库文档基金会
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