1 files changed, 161 insertions, 0 deletions
diff --git a/oox/source/helper/binarystreambase.cxx b/oox/source/helper/binarystreambase.cxx
new file mode 100644
index 000000000000..a8f9320ffc94
--- /dev/null
+++ b/oox/source/helper/binarystreambase.cxx
@@ -0,0 +1,161 @@
+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#include "oox/helper/binarystreambase.hxx"
+#include <osl/diagnose.h>
+
+using ::com::sun::star::uno::Reference;
+using ::com::sun::star::uno::Exception;
+using ::com::sun::star::io::XSeekable;
+
+namespace oox {
+
+// ============================================================================
+
+BinaryStreamBase::~BinaryStreamBase()
+{
+}
+
+bool BinaryStreamBase::isSeekable() const
+{
+    return false;
+}
+
+sal_Int64 BinaryStreamBase::getLength() const
+{
+    return -1;
+}
+
+sal_Int64 BinaryStreamBase::tell() const
+{
+    return -1;
+}
+
+void BinaryStreamBase::seek( sal_Int64 )
+{
+}
+
+sal_Int64 BinaryStreamBase::getRemaining() const
+{
+    // do not use isSeekable(), implementations may provide stream position and size even if not seekable
+    sal_Int64 nPos = tell();
+    sal_Int64 nLen = getLength();
+    return ((nPos >= 0) && (nLen >= 0)) ? ::std::max< sal_Int64 >( nLen - nPos, 0 ) : -1;
+}
+
+void BinaryStreamBase::alignToBlock( sal_Int32 nBlockSize, sal_Int64 nAnchorPos )
+{
+    sal_Int64 nStrmPos = tell();
+    // nothing to do, if stream is at anchor position
+    if( isSeekable() && (0 <= nAnchorPos) && (nAnchorPos != nStrmPos) && (nBlockSize > 1) )
+    {
+        // prevent modulo with negative arguments...
+        sal_Int64 nSkipSize = (nAnchorPos < nStrmPos) ?
+            (nBlockSize - ((nStrmPos - nAnchorPos - 1) % nBlockSize) - 1) :
+            ((nAnchorPos - nStrmPos) % nBlockSize);
+        seek( nStrmPos + nSkipSize );
+    }
+}
+
+// ============================================================================
+
+BinaryXSeekableStream::BinaryXSeekableStream( const Reference< XSeekable >& rxSeekable ) :
+    mxSeekable( rxSeekable )
+{
+}
+
+bool BinaryXSeekableStream::isSeekable() const
+{
+    return mxSeekable.is();
+}
+
+sal_Int64 BinaryXSeekableStream::getLength() const
+{
+    if( mxSeekable.is() ) try
+    {
+        return mxSeekable->getLength();
+    }
+    catch( Exception& )
+    {
+        OSL_ENSURE( false, "BinaryXSeekableStream::getLength - exception caught" );
+    }
+    return -1;
+}
+
+sal_Int64 BinaryXSeekableStream::tell() const
+{
+    if( mxSeekable.is() ) try
+    {
+        return mxSeekable->getPosition();
+    }
+    catch( Exception& )
+    {
+        OSL_ENSURE( false, "BinaryXSeekableStream::tell - exception caught" );
+    }
+    return -1;
+}
+
+void BinaryXSeekableStream::seek( sal_Int64 nPos )
+{
+    if( mxSeekable.is() ) try
+    {
+        mbEof = false;
+        mxSeekable->seek( nPos );
+    }
+    catch( Exception& )
+    {
+        mbEof = true;
+    }
+}
+
+// ============================================================================
+
+bool SequenceSeekableStream::isSeekable() const
+{
+    return true;
+}
+
+sal_Int64 SequenceSeekableStream::getLength() const
+{
+    return mrData.getLength();
+}
+
+sal_Int64 SequenceSeekableStream::tell() const
+{
+    return mnPos;
+}
+
+void SequenceSeekableStream::seek( sal_Int64 nPos )
+{
+    mnPos = getLimitedValue< sal_Int32, sal_Int64 >( nPos, 0, mrData.getLength() );
+    mbEof = mnPos != nPos;
+}
+
+// ============================================================================
+
+} // namespace oox
+