diff options
Diffstat (limited to 'svtools/source/svrtf/rtfout.cxx')
| -rw-r--r-- | svtools/source/svrtf/rtfout.cxx | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/svtools/source/svrtf/rtfout.cxx b/svtools/source/svrtf/rtfout.cxx new file mode 100644 index 0000000000..843256dc2d --- /dev/null +++ b/svtools/source/svrtf/rtfout.cxx @@ -0,0 +1,191 @@ +/* -*- 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 <tools/debug.hxx> +#include <tools/stream.hxx> +#include <tools/solar.h> +#include <rtl/string.hxx> +#include <svtools/rtfkeywd.hxx> +#include <svtools/rtfout.hxx> + +namespace { + +SvStream& Out_Hex( SvStream& rStream, sal_uLong nHex, sal_uInt8 nLen ) +{ + char aNToABuf[] = "0000000000000000"; + + DBG_ASSERT( nLen < sizeof(aNToABuf), "too many places" ); + if( nLen >= sizeof(aNToABuf) ) + nLen = (sizeof(aNToABuf)-1); + + // set pointer to end of buffer + char* pStr = aNToABuf + (sizeof(aNToABuf)-1); + for( sal_uInt8 n = 0; n < nLen; ++n ) + { + *(--pStr) = static_cast<char>(nHex & 0xf ) + 48; + if( *pStr > '9' ) + *pStr += 39; + nHex >>= 4; + } + return rStream.WriteOString( pStr ); +} + +// Ideally, this function should work on (sal_uInt32) Unicode scalar values +// instead of (sal_Unicode) UTF-16 code units. However, at least "Rich Text +// Format (RTF) Specification Version 1.9.1" available at +// <https://www.microsoft.com/en-us/download/details.aspx?id=10725> does not +// look like it allows non-BMP Unicode characters >= 0x10000 in the \uN notation +// (it only talks about "Unicode character", but then explains how values of N +// greater than 32767 will be expressed as negative signed 16-bit numbers, so +// that smells like \uN is limited to BMP). +// However the "Mathematics" section has an example that shows the code point +// U+1D44E being encoded as UTF-16 surrogate pair "\u-10187?\u-9138?", so +// sal_Unicode actually works fine here. +SvStream& Out_Char(SvStream& rStream, sal_Unicode c, + int *pUCMode, rtl_TextEncoding eDestEnc) +{ + const char* pStr = nullptr; + switch (c) + { + case 0x1: + case 0x2: + // this are control character of our textattributes and will never be + // written + break; + case 0xA0: + rStream.WriteOString( "\\~" ); + break; + case 0xAD: + rStream.WriteOString( "\\-" ); + break; + case 0x2011: + rStream.WriteOString( "\\_" ); + break; + case '\n': + pStr = OOO_STRING_SVTOOLS_RTF_LINE; + break; + case '\t': + pStr = OOO_STRING_SVTOOLS_RTF_TAB; + break; + default: + switch(c) + { + case 149: + pStr = OOO_STRING_SVTOOLS_RTF_BULLET; + break; + case 150: + pStr = OOO_STRING_SVTOOLS_RTF_ENDASH; + break; + case 151: + pStr = OOO_STRING_SVTOOLS_RTF_EMDASH; + break; + case 145: + pStr = OOO_STRING_SVTOOLS_RTF_LQUOTE; + break; + case 146: + pStr = OOO_STRING_SVTOOLS_RTF_RQUOTE; + break; + case 147: + pStr = OOO_STRING_SVTOOLS_RTF_LDBLQUOTE; + break; + case 148: + pStr = OOO_STRING_SVTOOLS_RTF_RDBLQUOTE; + break; + } + + if (pStr) + break; + + switch (c) + { + case '\\': + case '}': + case '{': + rStream.WriteChar( '\\' ).WriteChar( char(c) ); + break; + default: + if (c >= ' ' && c <= '~') + rStream.WriteChar( char(c) ); + else + { + //If we can't convert to the dest encoding, or if + //it's an uncommon multibyte sequence which most + //readers won't be able to handle correctly, then + //export as unicode + OUString sBuf(&c, 1); + OString sConverted; + sal_uInt32 const nFlags = + RTL_UNICODETOTEXT_FLAGS_UNDEFINED_ERROR | + RTL_UNICODETOTEXT_FLAGS_INVALID_ERROR; + bool bWriteAsUnicode = !(sBuf.convertToString(&sConverted, + eDestEnc, nFlags)) + || (RTL_TEXTENCODING_UTF8==eDestEnc); // #i43933# do not export UTF-8 chars in RTF; + if (bWriteAsUnicode) + { + (void)sBuf.convertToString(&sConverted, + eDestEnc, OUSTRING_TO_OSTRING_CVTFLAGS); + } + const sal_Int32 nLen = sConverted.getLength(); + + if (bWriteAsUnicode && pUCMode) + { + // then write as unicode - character + if (*pUCMode != nLen) + { + // #i47831# add an additional whitespace, so that + // "document whitespaces" are not ignored.; + rStream.WriteOString( "\\uc" ) + .WriteNumberAsString( nLen ).WriteOString( " " ); + *pUCMode = nLen; + } + rStream.WriteOString( "\\u" ) + .WriteNumberAsString(c); + } + + for (sal_Int32 nI = 0; nI < nLen; ++nI) + { + rStream.WriteOString( "\\'" ); + Out_Hex(rStream, sConverted[nI], 2); + } + } + break; + } + break; + } + + if (pStr) + rStream.WriteOString( pStr ).WriteChar( ' ' ); + + return rStream; +} + +} + +SvStream& RTFOutFuncs::Out_String( SvStream& rStream, std::u16string_view rStr, + rtl_TextEncoding eDestEnc) +{ + int nUCMode = 1; + for (size_t n = 0; n < rStr.size(); ++n) + Out_Char(rStream, rStr[n], &nUCMode, eDestEnc); + if (nUCMode != 1) + rStream.WriteOString( "\\uc1" ).WriteOString( " " ); // #i47831# add an additional whitespace, so that "document whitespaces" are not ignored.; + return rStream; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |