1 files changed, 322 insertions, 0 deletions
diff --git a/oox/source/helper/binaryinputstream.cxx b/oox/source/helper/binaryinputstream.cxx
new file mode 100644
index 000000000..27cbc6ad6
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+++ b/oox/source/helper/binaryinputstream.cxx
@@ -0,0 +1,322 @@
+/* -*- 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 <oox/helper/binaryinputstream.hxx>
+
+#include <com/sun/star/io/XInputStream.hpp>
+#include <com/sun/star/io/XSeekable.hpp>
+#include <string.h>
+#include <algorithm>
+#include <vector>
+#include <rtl/ustrbuf.hxx>
+#include <osl/diagnose.h>
+#include <oox/helper/binaryoutputstream.hxx>
+
+namespace oox {
+
+using namespace ::com::sun::star::io;
+using namespace ::com::sun::star::uno;
+
+namespace {
+
+const sal_Int32 INPUTSTREAM_BUFFERSIZE      = 0x8000;
+
+} // namespace
+
+OUString BinaryInputStream::readNulUnicodeArray()
+{
+    OUStringBuffer aBuffer;
+    for (;;)
+    {
+      sal_uInt16 nChar = readuInt16();
+      if ( mbEof || (nChar == 0) ) break;
+      aBuffer.append( static_cast< sal_Unicode >( nChar ) );
+    }
+    return aBuffer.makeStringAndClear();
+}
+
+OString BinaryInputStream::readCharArray( sal_Int32 nChars )
+{
+    if( nChars <= 0 )
+        return OString();
+
+    ::std::vector< sal_uInt8 > aBuffer;
+    sal_Int32 nCharsRead = readArray( aBuffer, nChars );
+    if( nCharsRead <= 0 )
+        return OString();
+
+    aBuffer.resize( static_cast< size_t >( nCharsRead ) );
+    // NUL characters are replaced by question marks.
+    ::std::replace( aBuffer.begin(), aBuffer.end(), '\0', '?' );
+
+    return OString(reinterpret_cast<char*>(aBuffer.data()), nCharsRead);
+}
+
+OUString BinaryInputStream::readCharArrayUC( sal_Int32 nChars, rtl_TextEncoding eTextEnc )
+{
+    return OStringToOUString( readCharArray( nChars ), eTextEnc );
+}
+
+OUString BinaryInputStream::readUnicodeArray( sal_Int32 nChars )
+{
+    if( nChars <= 0 )
+        return OUString();
+
+    ::std::vector< sal_uInt16 > aBuffer;
+    sal_Int32 nCharsRead = readArray( aBuffer, nChars );
+    if( nCharsRead <= 0 )
+        return OUString();
+
+    aBuffer.resize( static_cast< size_t >( nCharsRead ) );
+    // don't allow nul chars
+    ::std::replace( aBuffer.begin(), aBuffer.begin() + nCharsRead, '\0', '?' );
+
+    OUStringBuffer aStringBuffer;
+    aStringBuffer.ensureCapacity( nCharsRead );
+    for (auto const& elem : aBuffer)
+        aStringBuffer.append( static_cast< sal_Unicode >(elem) );
+    return aStringBuffer.makeStringAndClear();
+}
+
+OUString BinaryInputStream::readCompressedUnicodeArray( sal_Int32 nChars, bool bCompressed )
+{
+    return bCompressed ?
+         // ISO-8859-1 maps all byte values 0xHH to the same Unicode code point U+00HH
+        readCharArrayUC( nChars, RTL_TEXTENCODING_ISO_8859_1 ) :
+        readUnicodeArray( nChars );
+}
+
+void BinaryInputStream::copyToStream( BinaryOutputStream& rOutStrm )
+{
+    sal_Int64 nBytes = SAL_MAX_INT64;
+    sal_Int32 nBufferSize = INPUTSTREAM_BUFFERSIZE;
+    StreamDataSequence aBuffer( nBufferSize );
+    while( nBytes > 0 )
+    {
+        sal_Int32 nReadSize = getLimitedValue< sal_Int32, sal_Int64 >( nBytes, 0, nBufferSize );
+        sal_Int32 nBytesRead = readData( aBuffer, nReadSize );
+        rOutStrm.writeData( aBuffer );
+        if( nReadSize == nBytesRead )
+            nBytes -= nReadSize;
+        else
+            nBytes = 0;
+    }
+}
+
+BinaryXInputStream::BinaryXInputStream( const Reference< XInputStream >& rxInStrm, bool bAutoClose ) :
+    BinaryStreamBase( Reference< XSeekable >( rxInStrm, UNO_QUERY ).is() ),
+    BinaryXSeekableStream( Reference< XSeekable >( rxInStrm, UNO_QUERY ) ),
+    maBuffer( INPUTSTREAM_BUFFERSIZE ),
+    mxInStrm( rxInStrm ),
+    mbAutoClose( bAutoClose && rxInStrm.is() )
+{
+    mbEof = !mxInStrm.is();
+}
+
+BinaryXInputStream::~BinaryXInputStream()
+{
+    close();
+}
+
+void BinaryXInputStream::close()
+{
+    OSL_ENSURE( !mbAutoClose || mxInStrm.is(), "BinaryXInputStream::close - invalid call" );
+    if( mxInStrm.is() ) try
+    {
+        mxInStrm->closeInput();
+    }
+    catch( Exception& )
+    {
+        OSL_FAIL( "BinaryXInputStream::close - closing input stream failed" );
+    }
+    mxInStrm.clear();
+    mbAutoClose = false;
+    BinaryXSeekableStream::close();
+}
+
+sal_Int32 BinaryXInputStream::readData( StreamDataSequence& orData, sal_Int32 nBytes, size_t /*nAtomSize*/ )
+{
+    sal_Int32 nRet = 0;
+    if( !mbEof && (nBytes > 0) ) try
+    {
+        nRet = mxInStrm->readBytes( orData, nBytes );
+        mbEof = nRet != nBytes;
+    }
+    catch( Exception& )
+    {
+        mbEof = true;
+    }
+    return nRet;
+}
+
+sal_Int32 BinaryXInputStream::readMemory( void* opMem, sal_Int32 nBytes, size_t nAtomSize )
+{
+    sal_Int32 nRet = 0;
+    if( !mbEof && (nBytes > 0) )
+    {
+        sal_Int32 nBufferSize = getLimitedValue< sal_Int32, sal_Int32 >( nBytes, 0, INPUTSTREAM_BUFFERSIZE );
+        sal_uInt8* opnMem = static_cast< sal_uInt8* >( opMem );
+        while( !mbEof && (nBytes > 0) )
+        {
+            sal_Int32 nReadSize = getLimitedValue< sal_Int32, sal_Int32 >( nBytes, 0, nBufferSize );
+            sal_Int32 nBytesRead = readData( maBuffer, nReadSize, nAtomSize );
+            if( nBytesRead > 0 )
+                memcpy( opnMem, maBuffer.getConstArray(), static_cast< size_t >( nBytesRead ) );
+            opnMem += nBytesRead;
+            nBytes -= nBytesRead;
+            nRet += nBytesRead;
+        }
+    }
+    return nRet;
+}
+
+void BinaryXInputStream::skip( sal_Int32 nBytes, size_t /*nAtomSize*/ )
+{
+    if( !mbEof ) try
+    {
+        mxInStrm->skipBytes( nBytes );
+    }
+    catch( Exception& )
+    {
+        mbEof = true;
+    }
+}
+
+SequenceInputStream::SequenceInputStream( const StreamDataSequence& rData ) :
+    BinaryStreamBase( true ),
+    SequenceSeekableStream( rData )
+{
+}
+
+sal_Int32 SequenceInputStream::readData( StreamDataSequence& orData, sal_Int32 nBytes, size_t /*nAtomSize*/ )
+{
+    sal_Int32 nReadBytes = 0;
+    if( !mbEof )
+    {
+        nReadBytes = getMaxBytes( nBytes );
+        orData.realloc( nReadBytes );
+        if( nReadBytes > 0 )
+            memcpy( orData.getArray(), mpData->getConstArray() + mnPos, static_cast< size_t >( nReadBytes ) );
+        mnPos += nReadBytes;
+        mbEof = nReadBytes < nBytes;
+    }
+    return nReadBytes;
+}
+
+sal_Int32 SequenceInputStream::readMemory( void* opMem, sal_Int32 nBytes, size_t /*nAtomSize*/ )
+{
+    sal_Int32 nReadBytes = 0;
+    if( !mbEof )
+    {
+        nReadBytes = getMaxBytes( nBytes );
+        if( nReadBytes > 0 )
+            memcpy( opMem, mpData->getConstArray() + mnPos, static_cast< size_t >( nReadBytes ) );
+        mnPos += nReadBytes;
+        mbEof = nReadBytes < nBytes;
+    }
+    return nReadBytes;
+}
+
+void SequenceInputStream::skip( sal_Int32 nBytes, size_t /*nAtomSize*/ )
+{
+    if( !mbEof )
+    {
+        sal_Int32 nSkipBytes = getMaxBytes( nBytes );
+        mnPos += nSkipBytes;
+        mbEof = nSkipBytes < nBytes;
+    }
+}
+
+RelativeInputStream::RelativeInputStream( BinaryInputStream& rInStrm, sal_Int64 nSize ) :
+    BinaryStreamBase( rInStrm.isSeekable() ),
+    mpInStrm( &rInStrm ),
+    mnStartPos( rInStrm.tell() ),
+    mnRelPos( 0 )
+{
+    sal_Int64 nRemaining = rInStrm.getRemaining();
+    mnSize = (nRemaining >= 0) ? ::std::min( nSize, nRemaining ) : nSize;
+    mbEof = mbEof || rInStrm.isEof() || (mnSize < 0);
+}
+
+sal_Int64 RelativeInputStream::size() const
+{
+    return mpInStrm ? mnSize : -1;
+}
+
+sal_Int64 RelativeInputStream::tell() const
+{
+    return mpInStrm ? mnRelPos : -1;
+}
+
+void RelativeInputStream::seek( sal_Int64 nPos )
+{
+    if( mpInStrm && isSeekable() && (mnStartPos >= 0) )
+    {
+        mnRelPos = getLimitedValue< sal_Int64, sal_Int64 >( nPos, 0, mnSize );
+        mpInStrm->seek( mnStartPos + mnRelPos );
+        mbEof = (mnRelPos != nPos) || mpInStrm->isEof();
+    }
+}
+
+void RelativeInputStream::close()
+{
+    mpInStrm = nullptr;
+    mbEof = true;
+}
+
+sal_Int32 RelativeInputStream::readData( StreamDataSequence& orData, sal_Int32 nBytes, size_t nAtomSize )
+{
+    sal_Int32 nReadBytes = 0;
+    if( !mbEof )
+    {
+        sal_Int32 nMaxBytes = getMaxBytes( nBytes );
+        nReadBytes = mpInStrm->readData( orData, nMaxBytes, nAtomSize );
+        mnRelPos += nReadBytes;
+        mbEof = (nMaxBytes < nBytes) || mpInStrm->isEof();
+    }
+    return nReadBytes;
+}
+
+sal_Int32 RelativeInputStream::readMemory( void* opMem, sal_Int32 nBytes, size_t nAtomSize )
+{
+    sal_Int32 nReadBytes = 0;
+    if( !mbEof )
+    {
+        sal_Int32 nMaxBytes = getMaxBytes( nBytes );
+        nReadBytes = mpInStrm->readMemory( opMem, nMaxBytes, nAtomSize );
+        mnRelPos += nReadBytes;
+        mbEof = (nMaxBytes < nBytes) || mpInStrm->isEof();
+    }
+    return nReadBytes;
+}
+
+void RelativeInputStream::skip( sal_Int32 nBytes, size_t nAtomSize )
+{
+    if( !mbEof )
+    {
+        sal_Int32 nSkipBytes = getMaxBytes( nBytes );
+        mpInStrm->skip( nSkipBytes, nAtomSize );
+        mnRelPos += nSkipBytes;
+        mbEof = nSkipBytes < nBytes;
+    }
+}
+
+} // namespace oox
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */