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Diffstat (limited to 'sal/textenc/tcvtbyte.cxx')
| -rw-r--r-- | sal/textenc/tcvtbyte.cxx | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/sal/textenc/tcvtbyte.cxx b/sal/textenc/tcvtbyte.cxx new file mode 100644 index 0000000000..ee727d9f91 --- /dev/null +++ b/sal/textenc/tcvtbyte.cxx @@ -0,0 +1,161 @@ +/* -*- 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 <sal/config.h> + +#include <rtl/textcvt.h> + +#include "handleundefinedunicodetotextchar.hxx" +#include "tcvtbyte.hxx" +#include "tenchelp.hxx" + +sal_Size ImplSymbolToUnicode( SAL_UNUSED_PARAMETER const void*, + SAL_UNUSED_PARAMETER void*, + const char* pSrcBuf, sal_Size nSrcBytes, + sal_Unicode* pDestBuf, sal_Size nDestChars, + SAL_UNUSED_PARAMETER sal_uInt32, + sal_uInt32* pInfo, sal_Size* pSrcCvtBytes ) +{ + sal_Unicode* pEndDestBuf; + const char* pEndSrcBuf; + + *pInfo = 0; + pEndDestBuf = pDestBuf+nDestChars; + pEndSrcBuf = pSrcBuf+nSrcBytes; + while ( pSrcBuf < pEndSrcBuf ) + { + if ( pDestBuf == pEndDestBuf ) + { + *pInfo |= RTL_TEXTTOUNICODE_INFO_ERROR | RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOOSMALL; + break; + } + + /* 0-31 (all Control-Character get the same Unicode value) */ + unsigned char c = static_cast<unsigned char>(*pSrcBuf); + if ( c <= 0x1F ) + *pDestBuf = static_cast<sal_Unicode>(c); + else + *pDestBuf = static_cast<sal_Unicode>(c)+0xF000; + pDestBuf++; + pSrcBuf++; + } + + *pSrcCvtBytes = nSrcBytes - (pEndSrcBuf-pSrcBuf); + return (nDestChars - (pEndDestBuf-pDestBuf)); +} + +sal_Size ImplUnicodeToSymbol( SAL_UNUSED_PARAMETER const void*, + 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_Unicode c; + char* pEndDestBuf; + const sal_Unicode* pEndSrcBuf; + + *pInfo = 0; + pEndDestBuf = pDestBuf+nDestBytes; + pEndSrcBuf = pSrcBuf+nSrcChars; + while ( pSrcBuf < pEndSrcBuf ) + { + if ( pDestBuf == pEndDestBuf ) + { + *pInfo |= RTL_UNICODETOTEXT_INFO_ERROR | RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL; + break; + } + + c = *pSrcBuf; + if ( (c >= 0xF000) && (c <= 0xF0FF) ) + { + *pDestBuf = static_cast< char >(static_cast< unsigned char >(c-0xF000)); + pDestBuf++; + pSrcBuf++; + } + // Normally 0x001F, but in many cases also symbol characters + // are stored in the first 256 bytes, so that we don't change + // these values + else if ( c <= 0x00FF ) + { + *pDestBuf = static_cast< char >(static_cast< unsigned char >(c)); + pDestBuf++; + pSrcBuf++; + } + else + { + if ( nFlags & RTL_UNICODETOTEXT_FLAGS_UNDEFINED_REPLACE ) + { + /* !!! */ + /* Only ascii characters < 0x1F */ + } + + /* Handle undefined and surrogates characters */ + /* (all surrogates characters are undefined) */ + if (!sal::detail::textenc::handleUndefinedUnicodeToTextChar( + &pSrcBuf, pEndSrcBuf, &pDestBuf, pEndDestBuf, nFlags, + pInfo)) + break; + } + } + + *pSrcCvtChars = nSrcChars - (pEndSrcBuf-pSrcBuf); + return (nDestBytes - (pEndDestBuf-pDestBuf)); +} + +sal_Size ImplUpperCharToUnicode( const void* pData, + SAL_UNUSED_PARAMETER void*, + const char* pSrcBuf, sal_Size nSrcBytes, + sal_Unicode* pDestBuf, sal_Size nDestChars, + SAL_UNUSED_PARAMETER sal_uInt32, sal_uInt32* pInfo, + sal_Size* pSrcCvtBytes ) +{ + sal_Unicode cConv; + const ImplByteConvertData* pConvertData = static_cast<const ImplByteConvertData*>(pData); + sal_Unicode* pEndDestBuf; + const char* pEndSrcBuf; + + *pInfo = 0; + pEndDestBuf = pDestBuf+nDestChars; + pEndSrcBuf = pSrcBuf+nSrcBytes; + if ( pDestBuf == pEndDestBuf ) + { + *pInfo |= RTL_TEXTTOUNICODE_INFO_ERROR | RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOOSMALL; + *pSrcCvtBytes = 0; + return 0; + } + while ( pSrcBuf < pEndSrcBuf ) + { + unsigned char c = static_cast<unsigned char>(*pSrcBuf); + if (c < 0x80) + cConv = c; + else + // c <= 0xFF is implied. + cConv = pConvertData->mpToUniTab1[c - 0x80]; + + *pDestBuf = cConv; + pDestBuf++; + pSrcBuf++; + } + + *pSrcCvtBytes = nSrcBytes - (pEndSrcBuf-pSrcBuf); + return (nDestChars - (pEndDestBuf-pDestBuf)); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |