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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
commited5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch)
tree7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /tools/source/stream/stream.cxx
parentInitial commit. (diff)
downloadlibreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.tar.xz
libreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.zip
Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/source/stream/stream.cxx')
-rw-r--r--tools/source/stream/stream.cxx2012
1 files changed, 2012 insertions, 0 deletions
diff --git a/tools/source/stream/stream.cxx b/tools/source/stream/stream.cxx
new file mode 100644
index 000000000..bb84dd468
--- /dev/null
+++ b/tools/source/stream/stream.cxx
@@ -0,0 +1,2012 @@
+/* -*- 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 .
+ */
+
+// TODO: Read->RefreshBuffer-> React to changes from m_nBufActualLen
+
+#include <sal/config.h>
+
+#include <cassert>
+#include <cstddef>
+#include <memory>
+
+#include <string.h>
+
+#include <o3tl/safeint.hxx>
+#include <osl/endian.h>
+#include <osl/diagnose.h>
+#include <rtl/strbuf.hxx>
+#include <rtl/string.hxx>
+#include <rtl/ustrbuf.hxx>
+#include <sal/log.hxx>
+#include <tools/long.hxx>
+
+#include <comphelper/fileformat.h>
+#include <comphelper/fileurl.hxx>
+
+static void swapNibbles(unsigned char &c)
+{
+ unsigned char nSwapTmp=c;
+ nSwapTmp <<= 4;
+ c >>= 4;
+ c |= nSwapTmp;
+}
+
+#include <tools/debug.hxx>
+#include <tools/stream.hxx>
+#include <osl/thread.h>
+#include <algorithm>
+
+// !!! Do not inline if already the operators <<,>> are inline
+template <typename T, std::enable_if_t<std::is_integral_v<T> && sizeof(T) == 2, int> = 0>
+static void SwapNumber(T& r)
+ { r = OSL_SWAPWORD(r); }
+template <typename T, std::enable_if_t<std::is_integral_v<T> && sizeof(T) == 4, int> = 0>
+static void SwapNumber(T& r)
+ { r = OSL_SWAPDWORD(r); }
+template <typename T, std::enable_if_t<std::is_integral_v<T> && sizeof(T) == 8, int> = 0>
+static void SwapNumber(T& r)
+ {
+ union
+ {
+ T n;
+ sal_uInt32 c[2];
+ } s;
+
+ s.n = r;
+ std::swap(s.c[0], s.c[1]); // swap the 32 bit words
+ // swap the bytes in the words
+ s.c[0] = OSL_SWAPDWORD(s.c[0]);
+ s.c[1] = OSL_SWAPDWORD(s.c[1]);
+ r = s.n;
+ }
+
+#ifdef UNX
+static void SwapFloat( float& r )
+ {
+ union
+ {
+ float f;
+ sal_uInt32 c;
+ } s;
+
+ s.f = r;
+ s.c = OSL_SWAPDWORD( s.c );
+ r = s.f;
+ }
+
+static void SwapDouble( double& r )
+ {
+ if( sizeof(double) != 8 )
+ {
+ SAL_WARN( "tools.stream", "Can only swap 8-Byte-doubles" );
+ }
+ else
+ {
+ union
+ {
+ double d;
+ sal_uInt32 c[2];
+ } s;
+
+ s.d = r;
+ s.c[0] ^= s.c[1]; // swap 32-bit values in situ
+ s.c[1] ^= s.c[0];
+ s.c[0] ^= s.c[1];
+ s.c[0] = OSL_SWAPDWORD(s.c[0]); // swap dword itself in situ
+ s.c[1] = OSL_SWAPDWORD(s.c[1]);
+ r = s.d;
+ }
+ }
+#endif
+
+//SDO
+
+void SvStream::readNumberWithoutSwap_(void * pDataDest, int nDataSize)
+{
+ if (m_isIoRead && nDataSize <= m_nBufFree)
+ {
+ for (int i = 0; i < nDataSize; i++)
+ static_cast<char*>(pDataDest)[i] = m_pBufPos[i];
+ m_nBufActualPos += nDataSize;
+ m_pBufPos += nDataSize;
+ m_nBufFree -= nDataSize;
+ }
+ else
+ {
+ ReadBytes( pDataDest, nDataSize );
+ }
+}
+
+
+void SvStream::writeNumberWithoutSwap_(const void * pDataSrc, int nDataSize)
+{
+ if (m_isIoWrite && nDataSize <= m_nBufFree)
+ {
+ for (int i = 0; i < nDataSize; i++)
+ m_pBufPos[i] = static_cast<const char*>(pDataSrc)[i];
+ m_nBufFree -= nDataSize;
+ m_nBufActualPos += nDataSize;
+ if (m_nBufActualPos > m_nBufActualLen)
+ m_nBufActualLen = m_nBufActualPos;
+ m_pBufPos += nDataSize;
+ m_isDirty = true;
+ }
+ else
+ {
+ WriteBytes( pDataSrc, nDataSize );
+ }
+}
+
+
+void SvLockBytes::close()
+{
+ if (m_bOwner)
+ delete m_pStream;
+ m_pStream = nullptr;
+}
+
+
+// virtual
+ErrCode SvLockBytes::ReadAt(sal_uInt64 const nPos, void * pBuffer, std::size_t nCount,
+ std::size_t * pRead) const
+{
+ if (!m_pStream)
+ {
+ OSL_FAIL("SvLockBytes::ReadAt(): Bad stream");
+ return ERRCODE_NONE;
+ }
+
+ m_pStream->Seek(nPos);
+ std::size_t nTheRead = m_pStream->ReadBytes(pBuffer, nCount);
+ if (pRead)
+ *pRead = nTheRead;
+ return m_pStream->GetErrorCode();
+}
+
+// virtual
+ErrCode SvLockBytes::WriteAt(sal_uInt64 const nPos, const void * pBuffer, std::size_t nCount,
+ std::size_t * pWritten)
+{
+ if (!m_pStream)
+ {
+ OSL_FAIL("SvLockBytes::WriteAt(): Bad stream");
+ return ERRCODE_NONE;
+ }
+
+ m_pStream->Seek(nPos);
+ std::size_t nTheWritten = m_pStream->WriteBytes(pBuffer, nCount);
+ if (pWritten)
+ *pWritten = nTheWritten;
+ return m_pStream->GetErrorCode();
+}
+
+// virtual
+ErrCode SvLockBytes::Flush() const
+{
+ if (!m_pStream)
+ {
+ OSL_FAIL("SvLockBytes::Flush(): Bad stream");
+ return ERRCODE_NONE;
+ }
+
+ m_pStream->Flush();
+ return m_pStream->GetErrorCode();
+}
+
+// virtual
+ErrCode SvLockBytes::SetSize(sal_uInt64 const nSize)
+{
+ if (!m_pStream)
+ {
+ OSL_FAIL("SvLockBytes::SetSize(): Bad stream");
+ return ERRCODE_NONE;
+ }
+
+ m_pStream->SetStreamSize(nSize);
+ return m_pStream->GetErrorCode();
+}
+
+ErrCode SvLockBytes::Stat(SvLockBytesStat * pStat) const
+{
+ if (!m_pStream)
+ {
+ OSL_FAIL("SvLockBytes::Stat(): Bad stream");
+ return ERRCODE_NONE;
+ }
+
+ if (pStat)
+ pStat->nSize = m_pStream->TellEnd();
+ return ERRCODE_NONE;
+}
+
+
+std::size_t SvStream::GetData( void* pData, std::size_t nSize )
+{
+ if( !GetError() )
+ {
+ DBG_ASSERT( m_xLockBytes.is(), "pure virtual function" );
+ std::size_t nRet(0);
+ m_nError = m_xLockBytes->ReadAt(m_nActPos, pData, nSize, &nRet);
+ m_nActPos += nRet;
+ return nRet;
+ }
+ else return 0;
+}
+
+std::size_t SvStream::PutData( const void* pData, std::size_t nSize )
+{
+ if( !GetError() )
+ {
+ DBG_ASSERT( m_xLockBytes.is(), "pure virtual function" );
+ std::size_t nRet(0);
+ m_nError = m_xLockBytes->WriteAt(m_nActPos, pData, nSize, &nRet);
+ m_nActPos += nRet;
+ return nRet;
+ }
+ else return 0;
+}
+
+sal_uInt64 SvStream::SeekPos(sal_uInt64 const nPos)
+{
+ // check if a truncated STREAM_SEEK_TO_END was passed
+ assert(nPos != SAL_MAX_UINT32);
+ if( !GetError() && nPos == STREAM_SEEK_TO_END )
+ {
+ DBG_ASSERT( m_xLockBytes.is(), "pure virtual function" );
+ SvLockBytesStat aStat;
+ m_xLockBytes->Stat( &aStat );
+ m_nActPos = aStat.nSize;
+ }
+ else
+ m_nActPos = nPos;
+ return m_nActPos;
+}
+
+void SvStream::FlushData()
+{
+ if( !GetError() )
+ {
+ DBG_ASSERT( m_xLockBytes.is(), "pure virtual function" );
+ m_nError = m_xLockBytes->Flush();
+ }
+}
+
+void SvStream::SetSize(sal_uInt64 const nSize)
+{
+ DBG_ASSERT( m_xLockBytes.is(), "pure virtual function" );
+ m_nError = m_xLockBytes->SetSize( nSize );
+}
+
+SvStream::SvStream() :
+ m_nActPos(0)
+
+ , m_pBufPos(nullptr)
+ , m_nBufSize(0)
+ , m_nBufActualLen(0)
+ , m_nBufActualPos(0)
+ , m_nBufFree(0)
+ , m_isIoRead(false)
+ , m_isIoWrite(false)
+
+ , m_isDirty(false)
+ , m_isEof(false)
+
+ , m_nCompressMode(SvStreamCompressFlags::NONE)
+#if defined UNX
+ , m_eLineDelimiter(LINEEND_LF) // UNIX-Format
+#else
+ , m_eLineDelimiter(LINEEND_CRLF) // DOS-Format
+#endif
+ , m_eStreamCharSet(osl_getThreadTextEncoding())
+
+ , m_nCryptMask(0)
+
+ , m_nVersion(0)
+
+ , m_nBufFilePos(0)
+ , m_eStreamMode(StreamMode::NONE)
+ , m_isWritable(true)
+
+{
+ SetEndian( SvStreamEndian::LITTLE );
+
+ ClearError();
+}
+
+SvStream::SvStream( SvLockBytes* pLockBytesP ) : SvStream()
+{
+ m_xLockBytes = pLockBytesP;
+ if( pLockBytesP ) {
+ const SvStream* pStrm = pLockBytesP->GetStream();
+ if( pStrm ) {
+ SetError( pStrm->GetErrorCode() );
+ }
+ }
+ SetBufferSize( 256 );
+}
+
+SvStream::~SvStream()
+{
+ if (m_xLockBytes.is())
+ Flush();
+}
+
+void SvStream::ClearError()
+{
+ m_isEof = false;
+ m_nError = ERRCODE_NONE;
+}
+
+void SvStream::SetError( ErrCode nErrorCode )
+{
+ if (m_nError == ERRCODE_NONE)
+ m_nError = nErrorCode;
+}
+
+void SvStream::SetEndian( SvStreamEndian nNewFormat )
+{
+#ifdef OSL_BIGENDIAN
+ m_isSwap = nNewFormat == SvStreamEndian::LITTLE;
+#else
+ m_isSwap = nNewFormat == SvStreamEndian::BIG;
+#endif
+}
+
+SvStreamEndian SvStream::GetEndian() const
+{
+#ifdef OSL_BIGENDIAN
+ return m_isSwap ? SvStreamEndian::LITTLE : SvStreamEndian::BIG;
+#else
+ return m_isSwap ? SvStreamEndian::BIG : SvStreamEndian::LITTLE;
+#endif
+}
+
+void SvStream::SetBufferSize( sal_uInt16 nBufferSize )
+{
+ sal_uInt64 const nActualFilePos = Tell();
+ bool bDontSeek = (m_pRWBuf == nullptr);
+
+ if (m_isDirty && m_isWritable) // due to Windows NT: Access denied
+ FlushBuffer();
+
+ if (m_nBufSize)
+ {
+ m_pRWBuf.reset();
+ m_nBufFilePos += m_nBufActualPos;
+ }
+
+ m_pRWBuf = nullptr;
+ m_nBufActualLen = 0;
+ m_nBufActualPos = 0;
+ m_nBufSize = nBufferSize;
+ if (m_nBufSize)
+ m_pRWBuf.reset(new sal_uInt8[ m_nBufSize ]);
+ m_pBufPos = m_pRWBuf.get();
+ m_isIoRead = m_isIoWrite = false;
+ if( !bDontSeek )
+ SeekPos( nActualFilePos );
+}
+
+void SvStream::ClearBuffer()
+{
+ m_nBufActualLen = 0;
+ m_nBufActualPos = 0;
+ m_nBufFilePos = 0;
+ m_pBufPos = m_pRWBuf.get();
+ m_isDirty = false;
+ m_isIoRead = m_isIoWrite = false;
+
+ m_isEof = false;
+}
+
+void SvStream::ResetError()
+{
+ ClearError();
+}
+
+bool SvStream::ReadByteStringLine( OUString& rStr, rtl_TextEncoding eSrcCharSet,
+ sal_Int32 nMaxBytesToRead )
+{
+ OString aStr;
+ bool bRet = ReadLine( aStr, nMaxBytesToRead);
+ rStr = OStringToOUString(aStr, eSrcCharSet);
+ return bRet;
+}
+
+bool SvStream::ReadLine( OString& rStr, sal_Int32 nMaxBytesToRead )
+{
+ OStringBuffer aBuf(4096);
+ bool rv = ReadLine(aBuf, nMaxBytesToRead);
+ rStr = aBuf.makeStringAndClear();
+ return rv;
+}
+
+bool SvStream::ReadLine( OStringBuffer& aBuf, sal_Int32 nMaxBytesToRead )
+{
+ char buf[256+1];
+ bool bEnd = false;
+ sal_uInt64 nOldFilePos = Tell();
+ char c = 0;
+ std::size_t nTotalLen = 0;
+
+ aBuf.setLength(0);
+ while( !bEnd && !GetError() ) // Don't test for EOF as we
+ // are reading block-wise!
+ {
+ sal_uInt16 nLen = static_cast<sal_uInt16>(ReadBytes(buf, sizeof(buf)-1));
+ if ( !nLen )
+ {
+ if ( aBuf.isEmpty() )
+ {
+ // Exit on first block-read error
+ m_isEof = true;
+ aBuf.setLength(0);
+ return false;
+ }
+ else
+ break;
+ }
+
+ sal_uInt16 j, n;
+ for( j = n = 0; j < nLen ; ++j )
+ {
+ c = buf[j];
+ if ( c == '\n' || c == '\r' )
+ {
+ bEnd = true;
+ break;
+ }
+ if ( n < j )
+ buf[n] = c;
+ ++n;
+ }
+ nTotalLen += j;
+ if (nTotalLen > o3tl::make_unsigned(nMaxBytesToRead))
+ {
+ n -= nTotalLen - nMaxBytesToRead;
+ nTotalLen = nMaxBytesToRead;
+ bEnd = true;
+ }
+ if ( n )
+ aBuf.append(buf, n);
+ }
+
+ if ( !bEnd && !GetError() && !aBuf.isEmpty() )
+ bEnd = true;
+
+ nOldFilePos += nTotalLen;
+ if( Tell() > nOldFilePos )
+ nOldFilePos++;
+ Seek( nOldFilePos ); // Seek pointer due to BlockRead above
+
+ if ( bEnd && (c=='\r' || c=='\n') ) // Special treatment for DOS files
+ {
+ char cTemp;
+ std::size_t nLen = ReadBytes(&cTemp, sizeof(cTemp));
+ if ( nLen ) {
+ if( cTemp == c || (cTemp != '\n' && cTemp != '\r') )
+ Seek( nOldFilePos );
+ }
+ }
+
+ if ( bEnd )
+ m_isEof = false;
+ return bEnd;
+}
+
+bool SvStream::ReadUniStringLine( OUString& rStr, sal_Int32 nMaxCodepointsToRead )
+{
+ sal_Unicode buf[256+1];
+ bool bEnd = false;
+ sal_uInt64 nOldFilePos = Tell();
+ sal_Unicode c = 0;
+ std::size_t nTotalLen = 0;
+
+ DBG_ASSERT( sizeof(sal_Unicode) == sizeof(sal_uInt16), "ReadUniStringLine: swapping sizeof(sal_Unicode) not implemented" );
+
+ OUStringBuffer aBuf(4096);
+ while( !bEnd && !GetError() ) // Don't test for EOF as we
+ // are reading block-wise!
+ {
+ sal_uInt16 nLen = static_cast<sal_uInt16>(ReadBytes( buf, sizeof(buf)-sizeof(sal_Unicode)));
+ nLen /= sizeof(sal_Unicode);
+ if ( !nLen )
+ {
+ if ( aBuf.isEmpty() )
+ {
+ // exit on first BlockRead error
+ m_isEof = true;
+ rStr.clear();
+ return false;
+ }
+ else
+ break;
+ }
+
+ sal_uInt16 j, n;
+ for( j = n = 0; j < nLen ; ++j )
+ {
+ if (m_isSwap)
+ SwapNumber( buf[n] );
+ c = buf[j];
+ if ( c == '\n' || c == '\r' )
+ {
+ bEnd = true;
+ break;
+ }
+ // erAck 26.02.01: Old behavior was no special treatment of '\0'
+ // character here, but a following rStr+=c did ignore it. Is this
+ // really intended? Or should a '\0' better terminate a line?
+ // The nOldFilePos stuff wasn't correct then anyways.
+ if ( c )
+ {
+ if ( n < j )
+ buf[n] = c;
+ ++n;
+ }
+ }
+ nTotalLen += j;
+ if (nTotalLen > o3tl::make_unsigned(nMaxCodepointsToRead))
+ {
+ n -= nTotalLen - nMaxCodepointsToRead;
+ nTotalLen = nMaxCodepointsToRead;
+ bEnd = true;
+ }
+ if ( n )
+ aBuf.append( buf, n );
+ }
+
+ if ( !bEnd && !GetError() && !aBuf.isEmpty() )
+ bEnd = true;
+
+ nOldFilePos += nTotalLen * sizeof(sal_Unicode);
+ if( Tell() > nOldFilePos )
+ nOldFilePos += sizeof(sal_Unicode);
+ Seek( nOldFilePos ); // seek due to BlockRead above
+
+ if ( bEnd && (c=='\r' || c=='\n') ) // special treatment for DOS files
+ {
+ sal_Unicode cTemp;
+ ReadBytes( &cTemp, sizeof(cTemp) );
+ if (m_isSwap)
+ SwapNumber( cTemp );
+ if( cTemp == c || (cTemp != '\n' && cTemp != '\r') )
+ Seek( nOldFilePos );
+ }
+
+ if ( bEnd )
+ m_isEof = false;
+ rStr = aBuf.makeStringAndClear();
+ return bEnd;
+}
+
+bool SvStream::ReadUniOrByteStringLine( OUString& rStr, rtl_TextEncoding eSrcCharSet,
+ sal_Int32 nMaxCodepointsToRead )
+{
+ if ( eSrcCharSet == RTL_TEXTENCODING_UNICODE )
+ return ReadUniStringLine( rStr, nMaxCodepointsToRead );
+ else
+ return ReadByteStringLine( rStr, eSrcCharSet, nMaxCodepointsToRead );
+}
+
+OString read_zeroTerminated_uInt8s_ToOString(SvStream& rStream)
+{
+ OStringBuffer aOutput(256);
+
+ char buf[ 256 + 1 ];
+ bool bEnd = false;
+ sal_uInt64 nFilePos = rStream.Tell();
+
+ while( !bEnd && !rStream.GetError() )
+ {
+ std::size_t nLen = rStream.ReadBytes(buf, sizeof(buf)-1);
+ if (!nLen)
+ break;
+
+ std::size_t nReallyRead = nLen;
+ const char* pPtr = buf;
+ while (nLen && *pPtr)
+ {
+ ++pPtr;
+ --nLen;
+ }
+
+ bEnd = ( nReallyRead < sizeof(buf)-1 ) // read less than attempted to read
+ || ( ( nLen > 0 ) // OR it is inside the block we read
+ && ( 0 == *pPtr ) // AND found a string terminator
+ );
+
+ aOutput.append(buf, pPtr - buf);
+ }
+
+ nFilePos += aOutput.getLength();
+ if (rStream.Tell() > nFilePos)
+ rStream.Seek(nFilePos+1); // seek due to FileRead above
+ return aOutput.makeStringAndClear();
+}
+
+OUString read_zeroTerminated_uInt8s_ToOUString(SvStream& rStream, rtl_TextEncoding eEnc)
+{
+ return OStringToOUString(
+ read_zeroTerminated_uInt8s_ToOString(rStream), eEnc);
+}
+
+/** Attempt to write a prefixed sequence of nUnits 16bit units from an OUString,
+ returned value is number of bytes written */
+std::size_t write_uInt16s_FromOUString(SvStream& rStrm, std::u16string_view rStr,
+ std::size_t nUnits)
+{
+ DBG_ASSERT( sizeof(sal_Unicode) == sizeof(sal_uInt16), "write_uInt16s_FromOUString: swapping sizeof(sal_Unicode) not implemented" );
+ std::size_t nWritten;
+ if (!rStrm.IsEndianSwap())
+ nWritten = rStrm.WriteBytes(rStr.data(), nUnits * sizeof(sal_Unicode));
+ else
+ {
+ std::size_t nLen = nUnits;
+ sal_Unicode aBuf[384];
+ sal_Unicode* const pTmp = ( nLen > 384 ? new sal_Unicode[nLen] : aBuf);
+ memcpy( pTmp, rStr.data(), nLen * sizeof(sal_Unicode) );
+ sal_Unicode* p = pTmp;
+ const sal_Unicode* const pStop = pTmp + nLen;
+ while ( p < pStop )
+ {
+ SwapNumber( *p );
+ p++;
+ }
+ nWritten = rStrm.WriteBytes( pTmp, nLen * sizeof(sal_Unicode) );
+ if ( pTmp != aBuf )
+ delete [] pTmp;
+ }
+ return nWritten;
+}
+
+bool SvStream::WriteUnicodeOrByteText( std::u16string_view rStr, rtl_TextEncoding eDestCharSet )
+{
+ if ( eDestCharSet == RTL_TEXTENCODING_UNICODE )
+ {
+ write_uInt16s_FromOUString(*this, rStr, rStr.size());
+ return m_nError == ERRCODE_NONE;
+ }
+ else
+ {
+ OString aStr(OUStringToOString(rStr, eDestCharSet));
+ write_uInt8s_FromOString(*this, aStr, aStr.getLength());
+ return m_nError == ERRCODE_NONE;
+ }
+}
+
+bool SvStream::WriteByteStringLine( std::u16string_view rStr, rtl_TextEncoding eDestCharSet )
+{
+ return WriteLine(OUStringToOString(rStr, eDestCharSet));
+}
+
+bool SvStream::WriteLine(std::string_view rStr)
+{
+ WriteBytes(rStr.data(), rStr.size());
+ endl(*this);
+ return m_nError == ERRCODE_NONE;
+}
+
+bool SvStream::WriteUniOrByteChar( sal_Unicode ch, rtl_TextEncoding eDestCharSet )
+{
+ if ( eDestCharSet == RTL_TEXTENCODING_UNICODE )
+ WriteUnicode(ch);
+ else
+ {
+ OString aStr(&ch, 1, eDestCharSet);
+ WriteBytes(aStr.getStr(), aStr.getLength());
+ }
+ return m_nError == ERRCODE_NONE;
+}
+
+void SvStream::StartWritingUnicodeText()
+{
+ m_isSwap = false; // Switch to no endian swapping
+ // BOM, Byte Order Mark, U+FEFF, see
+ // http://www.unicode.org/faq/utf_bom.html#BOM
+ // Upon read: 0xfeff(-257) => no swap; 0xfffe(-2) => swap
+ WriteUInt16(0xfeff);
+}
+
+void SvStream::StartReadingUnicodeText( rtl_TextEncoding eReadBomCharSet )
+{
+ if (!( eReadBomCharSet == RTL_TEXTENCODING_DONTKNOW ||
+ eReadBomCharSet == RTL_TEXTENCODING_UNICODE ||
+ eReadBomCharSet == RTL_TEXTENCODING_UTF8))
+ return; // nothing to read
+
+ const sal_uInt64 nOldPos = Tell();
+ bool bGetBack = true;
+ unsigned char nFlag(0);
+ ReadUChar( nFlag );
+ switch ( nFlag )
+ {
+ case 0xfe: // UTF-16BE?
+ if ( eReadBomCharSet == RTL_TEXTENCODING_DONTKNOW ||
+ eReadBomCharSet == RTL_TEXTENCODING_UNICODE)
+ {
+ ReadUChar(nFlag);
+ if (nFlag == 0xff)
+ {
+ SetEndian(SvStreamEndian::BIG);
+ bGetBack = false;
+ }
+ }
+ break;
+ case 0xff: // UTF-16LE?
+ if ( eReadBomCharSet == RTL_TEXTENCODING_DONTKNOW ||
+ eReadBomCharSet == RTL_TEXTENCODING_UNICODE)
+ {
+ ReadUChar(nFlag);
+ if (nFlag == 0xfe)
+ {
+ SetEndian(SvStreamEndian::LITTLE);
+ bGetBack = false;
+ }
+ }
+ break;
+ case 0xef: // UTF-8?
+ if ( eReadBomCharSet == RTL_TEXTENCODING_DONTKNOW ||
+ eReadBomCharSet == RTL_TEXTENCODING_UTF8)
+ {
+ ReadUChar(nFlag);
+ if (nFlag == 0xbb)
+ {
+ ReadUChar(nFlag);
+ if (nFlag == 0xbf)
+ bGetBack = false; // it is UTF-8
+ }
+ }
+ break;
+ default:
+ ; // nothing
+ }
+ if (bGetBack)
+ Seek(nOldPos); // no BOM, pure data
+}
+
+sal_uInt64 SvStream::SeekRel(sal_Int64 const nPos)
+{
+ sal_uInt64 nActualPos = Tell();
+
+ if ( nPos >= 0 )
+ {
+ if (SAL_MAX_UINT64 - nActualPos > o3tl::make_unsigned(nPos))
+ nActualPos += nPos;
+ }
+ else
+ {
+ sal_uInt64 const nAbsPos = static_cast<sal_uInt64>(-nPos);
+ if ( nActualPos >= nAbsPos )
+ nActualPos -= nAbsPos;
+ }
+
+ assert((m_pBufPos != nullptr) == bool(m_pRWBuf));
+ if (m_pRWBuf)
+ {
+ m_pBufPos = m_pRWBuf.get() + nActualPos;
+ }
+ return Seek( nActualPos );
+}
+
+template <typename T> SvStream& SvStream::ReadNumber(T& r)
+{
+ T n = 0;
+ readNumberWithoutSwap(n);
+ if (good())
+ {
+ if (m_isSwap)
+ SwapNumber(n);
+ r = n;
+ }
+ return *this;
+}
+
+SvStream& SvStream::ReadUInt16(sal_uInt16& r) { return ReadNumber(r); }
+SvStream& SvStream::ReadUInt32(sal_uInt32& r) { return ReadNumber(r); }
+SvStream& SvStream::ReadUInt64(sal_uInt64& r) { return ReadNumber(r); }
+SvStream& SvStream::ReadInt16(sal_Int16& r) { return ReadNumber(r); }
+SvStream& SvStream::ReadInt32(sal_Int32& r) { return ReadNumber(r); }
+SvStream& SvStream::ReadInt64(sal_Int64& r) { return ReadNumber(r); }
+
+SvStream& SvStream::ReadSChar( signed char& r )
+{
+ if (m_isIoRead && sizeof(signed char) <= m_nBufFree)
+ {
+ r = *m_pBufPos;
+ m_nBufActualPos += sizeof(signed char);
+ m_pBufPos += sizeof(signed char);
+ m_nBufFree -= sizeof(signed char);
+ }
+ else
+ ReadBytes( &r, sizeof(signed char) );
+ return *this;
+}
+
+// Special treatment for Chars due to PutBack
+
+SvStream& SvStream::ReadChar( char& r )
+{
+ if (m_isIoRead && sizeof(char) <= m_nBufFree)
+ {
+ r = *m_pBufPos;
+ m_nBufActualPos += sizeof(char);
+ m_pBufPos += sizeof(char);
+ m_nBufFree -= sizeof(char);
+ }
+ else
+ ReadBytes( &r, sizeof(char) );
+ return *this;
+}
+
+SvStream& SvStream::ReadUChar( unsigned char& r )
+{
+ if (m_isIoRead && sizeof(char) <= m_nBufFree)
+ {
+ r = *m_pBufPos;
+ m_nBufActualPos += sizeof(char);
+ m_pBufPos += sizeof(char);
+ m_nBufFree -= sizeof(char);
+ }
+ else
+ ReadBytes( &r, sizeof(char) );
+ return *this;
+}
+
+SvStream& SvStream::ReadUtf16(sal_Unicode& r) { return ReadNumber(r); }
+
+SvStream& SvStream::ReadCharAsBool( bool& r )
+{
+ if (m_isIoRead && sizeof(char) <= m_nBufFree)
+ {
+ SAL_WARN_IF(
+ *m_pBufPos > 1, "tools.stream", unsigned(*m_pBufPos) << " not 0/1");
+ r = *m_pBufPos != 0;
+ m_nBufActualPos += sizeof(char);
+ m_pBufPos += sizeof(char);
+ m_nBufFree -= sizeof(char);
+ }
+ else
+ {
+ unsigned char c;
+ if (ReadBytes(&c, 1) == 1)
+ {
+ SAL_WARN_IF(c > 1, "tools.stream", unsigned(c) << " not 0/1");
+ r = c != 0;
+ }
+ }
+ return *this;
+}
+
+SvStream& SvStream::ReadFloat(float& r)
+{
+ float n = 0;
+ readNumberWithoutSwap(n);
+ if (good())
+ {
+#if defined UNX
+ if (m_isSwap)
+ SwapFloat(n);
+#endif
+ r = n;
+ }
+ return *this;
+}
+
+SvStream& SvStream::ReadDouble(double& r)
+{
+ double n = 0;
+ readNumberWithoutSwap(n);
+ if (good())
+ {
+#if defined UNX
+ if (m_isSwap)
+ SwapDouble(n);
+#endif
+ r = n;
+ }
+ return *this;
+}
+
+SvStream& SvStream::ReadStream( SvStream& rStream )
+{
+ const sal_uInt32 cBufLen = 0x8000;
+ std::unique_ptr<char[]> pBuf( new char[ cBufLen ] );
+
+ sal_uInt32 nCount;
+ do {
+ nCount = ReadBytes( pBuf.get(), cBufLen );
+ rStream.WriteBytes( pBuf.get(), nCount );
+ } while( nCount == cBufLen );
+
+ return *this;
+}
+
+template <typename T> SvStream& SvStream::WriteNumber(T n)
+{
+ if (m_isSwap)
+ SwapNumber(n);
+ writeNumberWithoutSwap(n);
+ return *this;
+}
+
+SvStream& SvStream::WriteUInt16(sal_uInt16 v) { return WriteNumber(v); }
+SvStream& SvStream::WriteUInt32(sal_uInt32 v) { return WriteNumber(v); }
+SvStream& SvStream::WriteUInt64(sal_uInt64 v) { return WriteNumber(v); }
+SvStream& SvStream::WriteInt16(sal_Int16 v) { return WriteNumber(v); }
+SvStream& SvStream::WriteInt32(sal_Int32 v) { return WriteNumber(v); }
+SvStream& SvStream::WriteInt64(sal_Int64 v) { return WriteNumber(v); }
+
+SvStream& SvStream::WriteSChar( signed char v )
+{
+ //SDO
+ if (m_isIoWrite && sizeof(signed char) <= m_nBufFree)
+ {
+ *m_pBufPos = v;
+ m_pBufPos++; // sizeof(char);
+ m_nBufActualPos++;
+ if (m_nBufActualPos > m_nBufActualLen) // Append ?
+ m_nBufActualLen = m_nBufActualPos;
+ m_nBufFree--; // = sizeof(char);
+ m_isDirty = true;
+ }
+ else
+ WriteBytes( &v, sizeof(signed char) );
+ return *this;
+}
+
+// Special treatment for Chars due to PutBack
+
+SvStream& SvStream::WriteChar( char v )
+{
+ //SDO
+ if (m_isIoWrite && sizeof(char) <= m_nBufFree)
+ {
+ *m_pBufPos = v;
+ m_pBufPos++; // sizeof(char);
+ m_nBufActualPos++;
+ if (m_nBufActualPos > m_nBufActualLen) // Append ?
+ m_nBufActualLen = m_nBufActualPos;
+ m_nBufFree--; // = sizeof(char);
+ m_isDirty = true;
+ }
+ else
+ WriteBytes( &v, sizeof(char) );
+ return *this;
+}
+
+SvStream& SvStream::WriteUChar( unsigned char v )
+{
+//SDO
+ if (m_isIoWrite && sizeof(char) <= m_nBufFree)
+ {
+ *reinterpret_cast<unsigned char*>(m_pBufPos) = v;
+ m_pBufPos++; // = sizeof(char);
+ m_nBufActualPos++; // = sizeof(char);
+ if (m_nBufActualPos > m_nBufActualLen) // Append ?
+ m_nBufActualLen = m_nBufActualPos;
+ m_nBufFree--;
+ m_isDirty = true;
+ }
+ else
+ WriteBytes( &v, sizeof(char) );
+ return *this;
+}
+
+SvStream& SvStream::WriteUInt8( sal_uInt8 v )
+{
+ return WriteUChar(v);
+}
+
+SvStream& SvStream::WriteUnicode( sal_Unicode v )
+{
+ return WriteUInt16(v);
+}
+
+SvStream& SvStream::WriteFloat( float v )
+{
+#ifdef UNX
+ if (m_isSwap)
+ SwapFloat(v);
+#endif
+ writeNumberWithoutSwap(v);
+ return *this;
+}
+
+SvStream& SvStream::WriteDouble ( const double& r )
+{
+#if defined UNX
+ if (m_isSwap)
+ {
+ double nHelp = r;
+ SwapDouble(nHelp);
+ writeNumberWithoutSwap(nHelp);
+ return *this;
+ }
+ else
+#endif
+ {
+ writeNumberWithoutSwap(r);
+ }
+ return *this;
+}
+
+SvStream& SvStream::WriteCharPtr( const char* pBuf )
+{
+ WriteBytes( pBuf, strlen(pBuf) );
+ return *this;
+}
+
+SvStream& SvStream::WriteStream( SvStream& rStream )
+{
+ const sal_uInt32 cBufLen = 0x8000;
+ std::unique_ptr<char[]> pBuf( new char[ cBufLen ] );
+ sal_uInt32 nCount;
+ do {
+ nCount = rStream.ReadBytes( pBuf.get(), cBufLen );
+ WriteBytes( pBuf.get(), nCount );
+ } while( nCount == cBufLen );
+
+ return *this;
+}
+
+sal_uInt64 SvStream::WriteStream( SvStream& rStream, sal_uInt64 nSize )
+{
+ const sal_uInt32 cBufLen = 0x8000;
+ std::unique_ptr<char[]> pBuf( new char[ cBufLen ] );
+ sal_uInt32 nCurBufLen = cBufLen;
+ sal_uInt32 nCount;
+ sal_uInt64 nWriteSize = nSize;
+
+ do
+ {
+ nCurBufLen = std::min<sal_uInt64>(nCurBufLen, nWriteSize);
+ nCount = rStream.ReadBytes(pBuf.get(), nCurBufLen);
+ WriteBytes( pBuf.get(), nCount );
+ nWriteSize -= nCount;
+ }
+ while( nWriteSize && nCount == nCurBufLen );
+
+ return nSize - nWriteSize;
+}
+
+OUString SvStream::ReadUniOrByteString( rtl_TextEncoding eSrcCharSet )
+{
+ // read UTF-16 string directly from stream ?
+ if (eSrcCharSet == RTL_TEXTENCODING_UNICODE)
+ return read_uInt32_lenPrefixed_uInt16s_ToOUString(*this);
+ return read_uInt16_lenPrefixed_uInt8s_ToOUString(*this, eSrcCharSet);
+}
+
+SvStream& SvStream::WriteUniOrByteString( std::u16string_view rStr, rtl_TextEncoding eDestCharSet )
+{
+ // write UTF-16 string directly into stream ?
+ if (eDestCharSet == RTL_TEXTENCODING_UNICODE)
+ write_uInt32_lenPrefixed_uInt16s_FromOUString(*this, rStr);
+ else
+ write_uInt16_lenPrefixed_uInt8s_FromOUString(*this, rStr, eDestCharSet);
+ return *this;
+}
+
+void SvStream::FlushBuffer()
+{
+ if (m_isDirty) // Does stream require a flush?
+ {
+ SeekPos(m_nBufFilePos);
+ if (m_nCryptMask)
+ CryptAndWriteBuffer(m_pRWBuf.get(), m_nBufActualLen);
+ else if (PutData(m_pRWBuf.get(), m_nBufActualLen) != m_nBufActualLen)
+ SetError(SVSTREAM_WRITE_ERROR);
+ m_isDirty = false;
+ }
+}
+
+std::size_t SvStream::ReadBytes( void* pData, std::size_t nCount )
+{
+ std::size_t nSaveCount = nCount;
+
+ if (!m_pRWBuf)
+ {
+ nCount = GetData( pData,nCount);
+ if (m_nCryptMask)
+ EncryptBuffer(pData, nCount);
+ m_nBufFilePos += nCount;
+ }
+ else
+ {
+ // check if block is completely within buffer
+ m_isIoRead = true;
+ m_isIoWrite = false;
+ if (nCount <= o3tl::make_unsigned(m_nBufActualLen - m_nBufActualPos))
+ {
+ // => yes
+ if (nCount != 0)
+ memcpy(pData, m_pBufPos, nCount);
+ m_nBufActualPos = m_nBufActualPos + static_cast<sal_uInt16>(nCount);
+ m_pBufPos += nCount;
+ m_nBufFree = m_nBufFree - static_cast<sal_uInt16>(nCount);
+ }
+ else
+ {
+ FlushBuffer();
+
+ // Does data block fit into buffer?
+ if (nCount > m_nBufSize)
+ {
+ // => No! Thus read directly
+ // into target area without using the buffer
+
+ m_isIoRead = false;
+
+ SeekPos(m_nBufFilePos + m_nBufActualPos);
+ m_nBufActualLen = 0;
+ m_pBufPos = m_pRWBuf.get();
+ nCount = GetData( pData, nCount );
+ if (m_nCryptMask)
+ EncryptBuffer(pData, nCount);
+ m_nBufFilePos += nCount;
+ m_nBufFilePos += m_nBufActualPos;
+ m_nBufActualPos = 0;
+ }
+ else
+ {
+ // => Yes. Fill buffer first, then copy to target area
+
+ m_nBufFilePos += m_nBufActualPos;
+ SeekPos(m_nBufFilePos);
+
+ // TODO: Typecast before GetData, sal_uInt16 nCountTmp
+ std::size_t nCountTmp = GetData( m_pRWBuf.get(), m_nBufSize );
+ if (m_nCryptMask)
+ EncryptBuffer(m_pRWBuf.get(), nCountTmp);
+ m_nBufActualLen = static_cast<sal_uInt16>(nCountTmp);
+ if( nCount > nCountTmp )
+ {
+ nCount = nCountTmp; // trim count back, EOF see below
+ }
+ memcpy( pData, m_pRWBuf.get(), nCount );
+ m_nBufActualPos = static_cast<sal_uInt16>(nCount);
+ m_pBufPos = m_pRWBuf.get() + nCount;
+ }
+ }
+ }
+ m_isEof = false;
+ m_nBufFree = m_nBufActualLen - m_nBufActualPos;
+ if (nCount != nSaveCount && m_nError != ERRCODE_IO_PENDING)
+ m_isEof = true;
+ if (nCount == nSaveCount && m_nError == ERRCODE_IO_PENDING)
+ m_nError = ERRCODE_NONE;
+ return nCount;
+}
+
+std::size_t SvStream::WriteBytes( const void* pData, std::size_t nCount )
+{
+ if( !nCount )
+ return 0;
+
+ if (!m_isWritable)
+ {
+ SetError( ERRCODE_IO_CANTWRITE );
+ return 0;
+ }
+
+ if (!m_pRWBuf)
+ {
+ if (m_nCryptMask)
+ nCount = CryptAndWriteBuffer( pData, nCount );
+ else
+ nCount = PutData( pData, nCount );
+ m_nBufFilePos += nCount;
+ return nCount;
+ }
+
+ m_isIoRead = false;
+ m_isIoWrite = true;
+ if (nCount <= o3tl::make_unsigned(m_nBufSize - m_nBufActualPos))
+ {
+ memcpy( m_pBufPos, pData, nCount );
+ m_nBufActualPos = m_nBufActualPos + static_cast<sal_uInt16>(nCount);
+ // Update length if buffer was updated
+ if (m_nBufActualPos > m_nBufActualLen)
+ m_nBufActualLen = m_nBufActualPos;
+
+ m_pBufPos += nCount;
+ m_isDirty = true;
+ }
+ else
+ {
+ FlushBuffer();
+
+ // Does data block fit into buffer?
+ if (nCount > m_nBufSize)
+ {
+ m_isIoWrite = false;
+ m_nBufFilePos += m_nBufActualPos;
+ m_nBufActualLen = 0;
+ m_nBufActualPos = 0;
+ m_pBufPos = m_pRWBuf.get();
+ SeekPos(m_nBufFilePos);
+ if (m_nCryptMask)
+ nCount = CryptAndWriteBuffer( pData, nCount );
+ else
+ nCount = PutData( pData, nCount );
+ m_nBufFilePos += nCount;
+ }
+ else
+ {
+ // Copy block to buffer
+ memcpy( m_pRWBuf.get(), pData, nCount );
+
+ // Mind the order!
+ m_nBufFilePos += m_nBufActualPos;
+ m_nBufActualPos = static_cast<sal_uInt16>(nCount);
+ m_pBufPos = m_pRWBuf.get() + nCount;
+ m_nBufActualLen = static_cast<sal_uInt16>(nCount);
+ m_isDirty = true;
+ }
+ }
+ m_nBufFree = m_nBufSize - m_nBufActualPos;
+ return nCount;
+}
+
+sal_uInt64 SvStream::Seek(sal_uInt64 const nFilePos)
+{
+ m_isIoRead = m_isIoWrite = false;
+ m_isEof = false;
+ if (!m_pRWBuf)
+ {
+ m_nBufFilePos = SeekPos( nFilePos );
+ DBG_ASSERT(Tell() == m_nBufFilePos,"Out Of Sync!");
+ return m_nBufFilePos;
+ }
+
+ // Is seek position within buffer?
+ if (nFilePos >= m_nBufFilePos && nFilePos <= (m_nBufFilePos + m_nBufActualLen))
+ {
+ m_nBufActualPos = static_cast<sal_uInt16>(nFilePos - m_nBufFilePos);
+ m_pBufPos = m_pRWBuf.get() + m_nBufActualPos;
+ // Update m_nBufFree to avoid crash upon PutBack
+ m_nBufFree = m_nBufActualLen - m_nBufActualPos;
+ }
+ else
+ {
+ FlushBuffer();
+ m_nBufActualLen = 0;
+ m_nBufActualPos = 0;
+ m_pBufPos = m_pRWBuf.get();
+ m_nBufFilePos = SeekPos( nFilePos );
+ }
+ return m_nBufFilePos + m_nBufActualPos;
+}
+
+bool checkSeek(SvStream &rSt, sal_uInt64 nOffset)
+{
+ const sal_uInt64 nMaxSeek = rSt.TellEnd();
+ return (nOffset <= nMaxSeek && rSt.Seek(nOffset) == nOffset);
+}
+
+namespace tools
+{
+bool isEmptyFileUrl(const OUString& rUrl)
+{
+ if (!comphelper::isFileUrl(rUrl))
+ {
+ return false;
+ }
+
+ SvFileStream aStream(rUrl, StreamMode::READ);
+ if (!aStream.IsOpen())
+ {
+ return false;
+ }
+
+ return aStream.remainingSize() == 0;
+}
+}
+
+//STREAM_SEEK_TO_END in some of the Seek backends is special cased to be
+//efficient, in others e.g. SotStorageStream it's really horribly slow, and in
+//those this should be overridden
+sal_uInt64 SvStream::remainingSize()
+{
+ sal_uInt64 const nCurr = Tell();
+ sal_uInt64 const nEnd = TellEnd();
+ sal_uInt64 nMaxAvailable = nEnd > nCurr ? (nEnd-nCurr) : 0;
+ return nMaxAvailable;
+}
+
+sal_uInt64 SvStream::TellEnd()
+{
+ FlushBuffer();
+ sal_uInt64 const nCurr = Tell();
+ sal_uInt64 const nEnd = Seek(STREAM_SEEK_TO_END);
+ Seek(nCurr);
+ return nEnd;
+}
+
+void SvStream::Flush()
+{
+ FlushBuffer();
+ if (m_isWritable)
+ FlushData();
+}
+
+void SvStream::RefreshBuffer()
+{
+ FlushBuffer();
+ SeekPos(m_nBufFilePos);
+ m_nBufActualLen = static_cast<sal_uInt16>(GetData( m_pRWBuf.get(), m_nBufSize ));
+ if (m_nBufActualLen && m_nError == ERRCODE_IO_PENDING)
+ m_nError = ERRCODE_NONE;
+ if (m_nCryptMask)
+ EncryptBuffer(m_pRWBuf.get(), static_cast<std::size_t>(m_nBufActualLen));
+ m_isIoRead = m_isIoWrite = false;
+}
+
+SvStream& SvStream::WriteInt32AsString(sal_Int32 nInt32)
+{
+ auto const buffer = OString::number(nInt32);
+ WriteBytes(buffer.getStr(), buffer.length);
+ return *this;
+}
+
+SvStream& SvStream::WriteUInt32AsString(sal_uInt32 nUInt32)
+{
+ auto const buffer = OString::number(nUInt32);
+ WriteBytes(buffer.getStr(), buffer.length);
+ return *this;
+}
+
+#define CRYPT_BUFSIZE 1024
+
+/// Encrypt and write
+std::size_t SvStream::CryptAndWriteBuffer( const void* pStart, std::size_t nLen)
+{
+ unsigned char pTemp[CRYPT_BUFSIZE];
+ unsigned char const * pDataPtr = static_cast<unsigned char const *>(pStart);
+ std::size_t nCount = 0;
+ std::size_t nBufCount;
+ unsigned char nMask = m_nCryptMask;
+ do
+ {
+ if( nLen >= CRYPT_BUFSIZE )
+ nBufCount = CRYPT_BUFSIZE;
+ else
+ nBufCount = nLen;
+ nLen -= nBufCount;
+ memcpy( pTemp, pDataPtr, static_cast<sal_uInt16>(nBufCount) );
+ // ******** Encrypt ********
+ for (unsigned char & rn : pTemp)
+ {
+ unsigned char aCh = rn;
+ aCh ^= nMask;
+ swapNibbles(aCh);
+ rn = aCh;
+ }
+ // *************************
+ nCount += PutData( pTemp, nBufCount );
+ pDataPtr += nBufCount;
+ }
+ while ( nLen );
+ return nCount;
+}
+
+void SvStream::EncryptBuffer(void* pStart, std::size_t nLen) const
+{
+ unsigned char* pTemp = static_cast<unsigned char*>(pStart);
+ unsigned char nMask = m_nCryptMask;
+
+ for ( std::size_t n=0; n < nLen; n++, pTemp++ )
+ {
+ unsigned char aCh = *pTemp;
+ swapNibbles(aCh);
+ aCh ^= nMask;
+ *pTemp = aCh;
+ }
+}
+
+static unsigned char implGetCryptMask(const char* pStr, sal_Int32 nLen, tools::Long nVersion)
+{
+ unsigned char nCryptMask = 0;
+
+ if (!nLen)
+ return nCryptMask;
+
+ if( nVersion <= SOFFICE_FILEFORMAT_31 )
+ {
+ while( nLen )
+ {
+ nCryptMask ^= *pStr;
+ pStr++;
+ nLen--;
+ }
+ }
+ else // BugFix #25888#
+ {
+ for( sal_Int32 i = 0; i < nLen; i++ ) {
+ nCryptMask ^= pStr[i];
+ if( nCryptMask & 0x80 ) {
+ nCryptMask <<= 1;
+ nCryptMask++;
+ }
+ else
+ nCryptMask <<= 1;
+ }
+ }
+
+ if( !nCryptMask )
+ nCryptMask = 67;
+
+ return nCryptMask;
+}
+
+void SvStream::SetCryptMaskKey(const OString& rCryptMaskKey)
+{
+ m_aCryptMaskKey = rCryptMaskKey;
+ m_nCryptMask = implGetCryptMask(m_aCryptMaskKey.getStr(),
+ m_aCryptMaskKey.getLength(), GetVersion());
+}
+
+bool SvStream::SetStreamSize(sal_uInt64 const nSize)
+{
+#ifdef DBG_UTIL
+ sal_uInt64 nFPos = Tell();
+#endif
+ sal_uInt16 nBuf = m_nBufSize;
+ SetBufferSize( 0 );
+ SetSize( nSize );
+ if (nSize < m_nBufFilePos)
+ {
+ m_nBufFilePos = nSize;
+ }
+ SetBufferSize( nBuf );
+#ifdef DBG_UTIL
+ DBG_ASSERT(Tell()==nFPos,"SetStreamSize failed");
+#endif
+ return (m_nError == ERRCODE_NONE);
+}
+
+SvStream& endl( SvStream& rStr )
+{
+ LineEnd eDelim = rStr.GetLineDelimiter();
+ if ( eDelim == LINEEND_CR )
+ rStr.WriteChar('\r');
+ else if( eDelim == LINEEND_LF )
+ rStr.WriteChar('\n');
+ else
+ rStr.WriteChar('\r').WriteChar('\n');
+ return rStr;
+}
+
+SvStream& endlu( SvStream& rStrm )
+{
+ switch ( rStrm.GetLineDelimiter() )
+ {
+ case LINEEND_CR :
+ rStrm.WriteUnicode('\r');
+ break;
+ case LINEEND_LF :
+ rStrm.WriteUnicode('\n');
+ break;
+ default:
+ rStrm.WriteUnicode('\r').WriteUnicode('\n');
+ }
+ return rStrm;
+}
+
+SvStream& endlub( SvStream& rStrm )
+{
+ if ( rStrm.GetStreamCharSet() == RTL_TEXTENCODING_UNICODE )
+ return endlu( rStrm );
+ else
+ return endl( rStrm );
+}
+
+SvMemoryStream::SvMemoryStream( void* pBuffer, std::size_t bufSize,
+ StreamMode eMode )
+{
+ if( eMode & StreamMode::WRITE )
+ m_isWritable = true;
+ else
+ m_isWritable = false;
+ nEndOfData = bufSize;
+ bOwnsData = false;
+ pBuf = static_cast<sal_uInt8 *>(pBuffer);
+ nResize = 0;
+ nSize = bufSize;
+ nPos = 0;
+ SetBufferSize( 0 );
+}
+
+SvMemoryStream::SvMemoryStream( std::size_t nInitSize, std::size_t nResizeOffset )
+{
+ m_isWritable = true;
+ bOwnsData = true;
+ nEndOfData = 0;
+ nResize = nResizeOffset;
+ nPos = 0;
+ pBuf = nullptr;
+ if( nResize != 0 && nResize < 16 )
+ nResize = 16;
+ if( nInitSize )
+ AllocateMemory( nInitSize );
+ nSize = nInitSize;
+ SetBufferSize( 64 );
+}
+
+SvMemoryStream::~SvMemoryStream()
+{
+ if( pBuf )
+ {
+ if( bOwnsData )
+ FreeMemory();
+ else
+ FlushBuffer();
+ }
+}
+
+void SvMemoryStream::SetBuffer( void* pNewBuf, std::size_t nCount,
+ std::size_t nEOF )
+{
+ SetBufferSize( 0 ); // Init buffering in the base class
+ Seek( 0 );
+ if( bOwnsData && pNewBuf != pBuf )
+ FreeMemory();
+
+ pBuf = static_cast<sal_uInt8 *>(pNewBuf);
+ nPos = 0;
+ nSize = nCount;
+ nResize = 0;
+ bOwnsData = false;
+
+ if( nEOF > nCount )
+ nEOF = nCount;
+ nEndOfData = nEOF;
+
+ ResetError();
+}
+
+std::size_t SvMemoryStream::GetData( void* pData, std::size_t nCount )
+{
+ std::size_t nMaxCount = nEndOfData-nPos;
+ if( nCount > nMaxCount )
+ nCount = nMaxCount;
+ if (nCount != 0)
+ {
+ memcpy( pData, pBuf+nPos, nCount );
+ }
+ nPos += nCount;
+ return nCount;
+}
+
+std::size_t SvMemoryStream::PutData( const void* pData, std::size_t nCount )
+{
+ if( GetError() )
+ return 0;
+
+ std::size_t nMaxCount = nSize-nPos;
+
+ // check for overflow
+ if( nCount > nMaxCount )
+ {
+ if( nResize == 0 )
+ {
+ // copy as much as possible
+ nCount = nMaxCount;
+ SetError( SVSTREAM_OUTOFMEMORY );
+ }
+ else
+ {
+ tools::Long nNewResize;
+ if( nSize && nSize > nResize )
+ nNewResize = nSize;
+ else
+ nNewResize = nResize;
+
+ if( (nCount-nMaxCount) < nResize )
+ {
+ // lacking memory is smaller than nResize,
+ // resize accordingly
+ if( !ReAllocateMemory( nNewResize) )
+ {
+ nCount = 0;
+ SetError( SVSTREAM_WRITE_ERROR );
+ }
+ }
+ else
+ {
+ // lacking memory is larger than nResize,
+ // resize by (nCount-nMaxCount) + resize offset
+ if( !ReAllocateMemory( nCount-nMaxCount+nNewResize ) )
+ {
+ nCount = 0;
+ SetError( SVSTREAM_WRITE_ERROR );
+ }
+ }
+ }
+ }
+ assert(pBuf && "Possibly Reallocate failed");
+ memcpy( pBuf+nPos, pData, nCount);
+
+ nPos += nCount;
+ if( nPos > nEndOfData )
+ nEndOfData = nPos;
+ return nCount;
+}
+
+sal_uInt64 SvMemoryStream::SeekPos(sal_uInt64 const nNewPos)
+{
+ // nEndOfData: First position in stream not allowed to read from
+ // nSize: Size of allocated buffer
+
+ // check if a truncated STREAM_SEEK_TO_END was passed
+ assert(nNewPos != SAL_MAX_UINT32);
+ if( nNewPos < nEndOfData )
+ nPos = nNewPos;
+ else if( nNewPos == STREAM_SEEK_TO_END )
+ nPos = nEndOfData;
+ else
+ {
+ if( nNewPos >= nSize ) // Does buffer need extension?
+ {
+ if( nResize ) // Is extension possible?
+ {
+ tools::Long nDiff = static_cast<tools::Long>(nNewPos - nSize + 1);
+ nDiff += static_cast<tools::Long>(nResize);
+ ReAllocateMemory( nDiff );
+ nPos = nNewPos;
+ nEndOfData = nNewPos;
+ }
+ else // Extension not possible, set pos to end of data
+ {
+ // SetError( SVSTREAM_OUTOFMEMORY );
+ nPos = nEndOfData;
+ }
+ }
+ else // Expand buffer size
+ {
+ nPos = nNewPos;
+ nEndOfData = nNewPos;
+ }
+ }
+ return nPos;
+}
+
+void SvMemoryStream::FlushData()
+{
+}
+
+void SvMemoryStream::ResetError()
+{
+ SvStream::ClearError();
+}
+
+void SvMemoryStream::AllocateMemory( std::size_t nNewSize )
+{
+ pBuf = new sal_uInt8[nNewSize];
+}
+
+// (using Bozo algorithm)
+bool SvMemoryStream::ReAllocateMemory( tools::Long nDiff )
+{
+ if (!m_isWritable || !bOwnsData)
+ return false;
+
+ bool bRetVal = false;
+ tools::Long nTemp = static_cast<tools::Long>(nSize);
+ nTemp += nDiff;
+ std::size_t nNewSize = static_cast<std::size_t>(nTemp);
+
+ if( nNewSize )
+ {
+ sal_uInt8* pNewBuf = new sal_uInt8[nNewSize];
+
+ bRetVal = true; // Success!
+ if( nNewSize < nSize ) // Are we shrinking?
+ {
+ memcpy( pNewBuf, pBuf, nNewSize );
+ if( nPos > nNewSize )
+ nPos = 0;
+ if( nEndOfData >= nNewSize )
+ nEndOfData = nNewSize-1;
+ }
+ else
+ {
+ if (nSize != 0)
+ {
+ memcpy( pNewBuf, pBuf, nSize );
+ }
+ memset(pNewBuf + nSize, 0x00, nNewSize - nSize);
+ }
+
+ FreeMemory();
+
+ pBuf = pNewBuf;
+ nSize = nNewSize;
+ }
+ else
+ {
+ bRetVal = true;
+ FreeMemory();
+ pBuf = nullptr;
+ nSize = 0;
+ nEndOfData = 0;
+ nPos = 0;
+ }
+
+ return bRetVal;
+}
+
+void SvMemoryStream::FreeMemory()
+{
+ assert(bOwnsData);
+ if (bOwnsData)
+ {
+ delete[] pBuf;
+ pBuf = nullptr;
+ }
+}
+
+void* SvMemoryStream::SwitchBuffer()
+{
+ FlushBuffer();
+ if( !bOwnsData )
+ return nullptr;
+ Seek( STREAM_SEEK_TO_BEGIN );
+
+ void* pRetVal = pBuf;
+ pBuf = nullptr;
+ nEndOfData = 0;
+ nResize = 64;
+ nPos = 0;
+
+ ResetError();
+
+ std::size_t nInitSize = 512;
+ AllocateMemory(nInitSize);
+ nSize = nInitSize;
+
+ SetBufferSize( 64 );
+ return pRetVal;
+}
+
+void SvMemoryStream::SetSize(sal_uInt64 const nNewSize)
+{
+ if (!m_isWritable)
+ {
+ SetError(SVSTREAM_INVALID_HANDLE);
+ return;
+ }
+
+ tools::Long nDiff = static_cast<tools::Long>(nNewSize) - static_cast<tools::Long>(nSize);
+ ReAllocateMemory( nDiff );
+}
+
+// Create an OString of nLen bytes from rStream
+// coverity[ +taint_sanitize ]
+OString read_uInt8s_ToOString(SvStream& rStrm, std::size_t nLen)
+{
+ rtl_String *pStr = nullptr;
+ if (nLen)
+ {
+ nLen = std::min<std::size_t>(nLen, SAL_MAX_INT32);
+ //limit allocation to size of file, but + 1 to set eof state
+ nLen = std::min<sal_uInt64>(nLen, rStrm.remainingSize() + 1);
+ //alloc a (ref-count 1) rtl_String of the desired length.
+ //rtl_String's buffer is uninitialized, except for null termination
+ pStr = rtl_string_alloc(sal::static_int_cast<sal_Int32>(nLen));
+ SAL_WARN_IF(!pStr, "tools.stream", "allocation failed");
+ if (pStr)
+ {
+ std::size_t nWasRead = rStrm.ReadBytes(pStr->buffer, nLen);
+ if (nWasRead != nLen)
+ {
+ //on (typically unlikely) short read set length to what we could
+ //read, and null terminate. Excess buffer capacity remains of
+ //course, could create a (true) replacement OString if it matters.
+ pStr->length = sal::static_int_cast<sal_Int32>(nWasRead);
+ pStr->buffer[pStr->length] = 0;
+ }
+ }
+ }
+
+ //take ownership of buffer and return, otherwise return empty string
+ return pStr ? OString(pStr, SAL_NO_ACQUIRE) : OString();
+}
+
+// Create an OUString of nLen sal_Unicode code units from rStream
+// coverity[ +taint_sanitize ]
+OUString read_uInt16s_ToOUString(SvStream& rStrm, std::size_t nLen)
+{
+ rtl_uString *pStr = nullptr;
+ if (nLen)
+ {
+ nLen = std::min<std::size_t>(nLen, SAL_MAX_INT32);
+ //limit allocation to size of file, but + 1 to set eof state
+ nLen = o3tl::sanitizing_min<sal_uInt64>(nLen, (rStrm.remainingSize() + 2) / 2);
+ //alloc a (ref-count 1) rtl_uString of the desired length.
+ //rtl_String's buffer is uninitialized, except for null termination
+ pStr = rtl_uString_alloc(sal::static_int_cast<sal_Int32>(nLen));
+ SAL_WARN_IF(!pStr, "tools.stream", "allocation failed");
+ if (pStr)
+ {
+ std::size_t nWasRead = rStrm.ReadBytes(pStr->buffer, nLen*2)/2;
+ if (nWasRead != nLen)
+ {
+ //on (typically unlikely) short read set length to what we could
+ //read, and null terminate. Excess buffer capacity remains of
+ //course, could create a (true) replacement OUString if it matters.
+ pStr->length = sal::static_int_cast<sal_Int32>(nWasRead);
+ pStr->buffer[pStr->length] = 0;
+ }
+ if (rStrm.IsEndianSwap())
+ {
+ for (sal_Int32 i = 0; i < pStr->length; ++i)
+ pStr->buffer[i] = OSL_SWAPWORD(pStr->buffer[i]);
+ }
+ }
+ }
+
+ // take ownership of buffer and return, otherwise return empty string
+ return pStr ? OUString(pStr, SAL_NO_ACQUIRE) : OUString();
+}
+
+namespace
+{
+ template <typename T, typename O> T tmpl_convertLineEnd(const T &rIn, LineEnd eLineEnd)
+ {
+ // Determine linebreaks and compute length
+ bool bConvert = false; // Needs conversion
+ sal_Int32 nStrLen = rIn.getLength();
+ sal_Int32 nLineEndLen = (eLineEnd == LINEEND_CRLF) ? 2 : 1;
+ sal_Int32 nLen = 0; // Target length
+ sal_Int32 i = 0; // Source counter
+
+ while (i < nStrLen)
+ {
+ // \r or \n causes linebreak
+ if ( (rIn[i] == '\r') || (rIn[i] == '\n') )
+ {
+ nLen = nLen + nLineEndLen;
+
+ // If set already, skip expensive test
+ if ( !bConvert )
+ {
+ // Do we need to convert?
+ if ( ((eLineEnd != LINEEND_LF) && (rIn[i] == '\n')) ||
+ ((eLineEnd == LINEEND_CRLF) && (i+1) < nStrLen && (rIn[i+1] != '\n')) ||
+ ((eLineEnd == LINEEND_LF) &&
+ ((rIn[i] == '\r') || ((i+1) < nStrLen && rIn[i+1] == '\r'))) ||
+ ((eLineEnd == LINEEND_CR) &&
+ ((rIn[i] == '\n') || ((i+1) < nStrLen && rIn[i+1] == '\n'))) )
+ bConvert = true;
+ }
+
+ // skip char if \r\n or \n\r
+ if ( (i+1) < nStrLen && ((rIn[i+1] == '\r') || (rIn[i+1] == '\n')) &&
+ (rIn[i] != rIn[i+1]) )
+ ++i;
+ }
+ else
+ ++nLen;
+ ++i;
+ }
+
+ if (!bConvert)
+ return rIn;
+
+ // convert linebreaks, insert string
+ O aNewData(nLen);
+ i = 0;
+ while (i < nStrLen)
+ {
+ // \r or \n causes linebreak
+ if ( (rIn[i] == '\r') || (rIn[i] == '\n') )
+ {
+ if ( eLineEnd == LINEEND_CRLF )
+ {
+ aNewData.append('\r');
+ aNewData.append('\n');
+ }
+ else
+ {
+ if ( eLineEnd == LINEEND_CR )
+ aNewData.append('\r');
+ else
+ aNewData.append('\n');
+ }
+
+ if ( (i+1) < nStrLen && ((rIn[i+1] == '\r') || (rIn[i+1] == '\n')) &&
+ (rIn[i] != rIn[i+1]) )
+ ++i;
+ }
+ else
+ {
+ aNewData.append(rIn[i]);
+ }
+
+ ++i;
+ }
+
+ return aNewData.makeStringAndClear();
+ }
+}
+
+OString convertLineEnd(const OString &rIn, LineEnd eLineEnd)
+{
+ return tmpl_convertLineEnd<OString, OStringBuffer>(rIn, eLineEnd);
+}
+
+OUString convertLineEnd(const OUString &rIn, LineEnd eLineEnd)
+{
+ return tmpl_convertLineEnd<OUString, OUStringBuffer>(rIn, eLineEnd);
+}
+
+std::size_t write_uInt32_lenPrefixed_uInt16s_FromOUString(SvStream& rStrm,
+ std::u16string_view rStr)
+{
+ std::size_t nWritten = 0;
+ sal_uInt32 nUnits = std::min<std::size_t>(rStr.size(), std::numeric_limits<sal_uInt32>::max());
+ SAL_WARN_IF(static_cast<std::size_t>(nUnits) != static_cast<std::size_t>(rStr.size()),
+ "tools.stream",
+ "string too long for prefix count to fit in output type");
+ rStrm.WriteUInt32(nUnits);
+ if (rStrm.good())
+ {
+ nWritten += sizeof(sal_uInt32);
+ nWritten += write_uInt16s_FromOUString(rStrm, rStr, nUnits);
+ }
+ return nWritten;
+}
+
+std::size_t write_uInt16_lenPrefixed_uInt16s_FromOUString(SvStream& rStrm,
+ std::u16string_view rStr)
+{
+ std::size_t nWritten = 0;
+ sal_uInt16 nUnits = std::min<std::size_t>(rStr.size(), std::numeric_limits<sal_uInt16>::max());
+ SAL_WARN_IF(nUnits != rStr.size(),
+ "tools.stream",
+ "string too long for prefix count to fit in output type");
+ rStrm.WriteUInt16(nUnits);
+ if (rStrm.good())
+ {
+ nWritten += sizeof(nUnits);
+ nWritten += write_uInt16s_FromOUString(rStrm, rStr, nUnits);
+ }
+ return nWritten;
+}
+
+std::size_t write_uInt16_lenPrefixed_uInt8s_FromOString(SvStream& rStrm,
+ std::string_view rStr)
+{
+ std::size_t nWritten = 0;
+ sal_uInt16 nUnits = std::min<std::size_t>(rStr.size(), std::numeric_limits<sal_uInt16>::max());
+ SAL_WARN_IF(static_cast<std::size_t>(nUnits) != static_cast<std::size_t>(rStr.size()),
+ "tools.stream",
+ "string too long for sal_uInt16 count to fit in output type");
+ rStrm.WriteUInt16( nUnits );
+ if (rStrm.good())
+ {
+ nWritten += sizeof(sal_uInt16);
+ nWritten += write_uInt8s_FromOString(rStrm, rStr, nUnits);
+ }
+ return nWritten;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */