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/* -*- 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/.
*/
#include <filter/msfilter/rtfutil.hxx>
#include <rtl/strbuf.hxx>
#include <svtools/rtfkeywd.hxx>
namespace msfilter {
namespace rtfutil {
OString OutHex(sal_uLong nHex, sal_uInt8 nLen)
{
sal_Char aNToABuf[] = "0000000000000000";
OSL_ENSURE( nLen < sizeof(aNToABuf), "nLen is too big" );
if( nLen >= sizeof(aNToABuf) )
nLen = (sizeof(aNToABuf)-1);
// Set pointer to the buffer end
sal_Char* pStr = aNToABuf + (sizeof(aNToABuf)-1);
for( sal_uInt8 n = 0; n < nLen; ++n )
{
*(--pStr) = (sal_Char)(nHex & 0xf ) + 48;
if( *pStr > '9' )
*pStr += 39;
nHex >>= 4;
}
return OString(pStr);
}
OString OutChar(sal_Unicode c, int *pUCMode, rtl_TextEncoding eDestEnc, bool* pSuccess, bool bUnicode)
{
if (pSuccess)
*pSuccess = true;
OStringBuffer aBuf;
const sal_Char* pStr = 0;
// 0x0b instead of \n, etc because of the replacements in SwWW8AttrIter::GetSnippet()
switch (c)
{
case 0x0b:
// hard line break
pStr = OOO_STRING_SVTOOLS_RTF_LINE;
break;
case '\t':
pStr = OOO_STRING_SVTOOLS_RTF_TAB;
break;
case '\\':
case '}':
case '{':
aBuf.append('\\');
aBuf.append((sal_Char)c);
break;
case 0xa0:
// non-breaking space
pStr = "\\~";
break;
case 0x1e:
// non-breaking hyphen
pStr = "\\_";
break;
case 0x1f:
// optional hyphen
pStr = "\\-";
break;
default:
if (c >= ' ' && c <= '~')
aBuf.append((sal_Char)c);
else {
OUString sBuf(&c, 1);
OString sConverted;
if (pSuccess)
*pSuccess &= sBuf.convertToString(&sConverted, eDestEnc, RTL_UNICODETOTEXT_FLAGS_UNDEFINED_ERROR | RTL_UNICODETOTEXT_FLAGS_INVALID_ERROR);
else
sBuf.convertToString(&sConverted, eDestEnc, OUSTRING_TO_OSTRING_CVTFLAGS);
const sal_Int32 nLen = sConverted.getLength();
if (pUCMode && bUnicode)
{
if (*pUCMode != nLen)
{
aBuf.append("\\uc");
aBuf.append((sal_Int32)nLen);
// #i47831# add an additional whitespace, so that "document whitespaces" are not ignored.
aBuf.append(' ');
*pUCMode = nLen;
}
aBuf.append("\\u");
aBuf.append((sal_Int32)c);
}
for (sal_Int32 nI = 0; nI < nLen; ++nI)
{
aBuf.append("\\'");
aBuf.append(OutHex(sConverted.getStr()[nI], 2));
}
}
}
if (pStr) {
aBuf.append(pStr);
switch (c)
{
case 0xa0:
case 0x1e:
case 0x1f:
break;
default:
aBuf.append(' ');
}
}
return aBuf.makeStringAndClear();
}
OString OutString(const String &rStr, rtl_TextEncoding eDestEnc, bool bUnicode)
{
SAL_INFO("filter.ms", OSL_THIS_FUNC << ", rStr = '" << OUString(rStr) << "'");
OStringBuffer aBuf;
int nUCMode = 1;
for (xub_StrLen n = 0; n < rStr.Len(); ++n)
aBuf.append(OutChar(rStr.GetChar(n), &nUCMode, eDestEnc, 0, bUnicode));
if (nUCMode != 1) {
aBuf.append(OOO_STRING_SVTOOLS_RTF_UC);
aBuf.append((sal_Int32)1);
aBuf.append(" "); // #i47831# add an additional whitespace, so that "document whitespaces" are not ignored.;
}
return aBuf.makeStringAndClear();
}
/// Checks if lossless conversion of the string to eDestEnc is possible or not.
static bool TryOutString(const String &rStr, rtl_TextEncoding eDestEnc)
{
int nUCMode = 1;
for (xub_StrLen n = 0; n < rStr.Len(); ++n)
{
bool bRet;
OutChar(rStr.GetChar(n), &nUCMode, eDestEnc, &bRet);
if (!bRet)
return false;
}
return true;
}
OString OutStringUpr(const sal_Char *pToken, const String &rStr, rtl_TextEncoding eDestEnc)
{
if (TryOutString(rStr, eDestEnc))
return OString("{") + pToken + " " + OutString(rStr, eDestEnc) + "}";
OStringBuffer aRet;
aRet.append("{" OOO_STRING_SVTOOLS_RTF_UPR "{");
aRet.append(pToken);
aRet.append(" ");
aRet.append(OutString(rStr, eDestEnc, /*bUnicode =*/ false));
aRet.append("}{" OOO_STRING_SVTOOLS_RTF_IGNORE OOO_STRING_SVTOOLS_RTF_UD "{");
aRet.append(pToken);
aRet.append(" ");
aRet.append(OutString(rStr, eDestEnc));
aRet.append("}}}");
return aRet.makeStringAndClear();
}
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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