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Diffstat (limited to 'unotools/inc/unotools/streamsection.hxx')
| -rw-r--r-- | unotools/inc/unotools/streamsection.hxx | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/unotools/inc/unotools/streamsection.hxx b/unotools/inc/unotools/streamsection.hxx new file mode 100644 index 000000000000..4fa2e19b6e07 --- /dev/null +++ b/unotools/inc/unotools/streamsection.hxx @@ -0,0 +1,88 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2008 by Sun Microsystems, Inc. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * $RCSfile: streamsection.hxx,v $ + * $Revision: 1.3 $ + * + * 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. + * + ************************************************************************/ + +#ifndef _UNOTOOLS_STREAMSECTION_HXX_ +#define _UNOTOOLS_STREAMSECTION_HXX_ + +#include <com/sun/star/io/XMarkableStream.hpp> +#include <com/sun/star/io/XDataInputStream.hpp> +#include <com/sun/star/io/XDataOutputStream.hpp> + +namespace utl +{ + + namespace stario = ::com::sun::star::io; + namespace staruno = ::com::sun::star::uno; + +/** implements handling for compatibly reading/writing data from/into an input/output stream. + data written in a block secured by this class should be readable by older versions which + use the same mechanism. + + @author Frank Schoenheit + @since 00/26/05 +*/ + +class OStreamSection +{ + staruno::Reference< stario::XMarkableStream > m_xMarkStream; + staruno::Reference< stario::XDataInputStream > m_xInStream; + staruno::Reference< stario::XDataOutputStream > m_xOutStream; + + sal_Int32 m_nBlockStart; + sal_Int32 m_nBlockLen; + +public: + /** starts reading of a "skippable" section of data within the given input stream<BR> + @param _rxInput the stream to read from. Must support the + <type scope="com::sun::star::io">XMarkableStream</type> interface + */ + OStreamSection(const staruno::Reference< stario::XDataInputStream >& _rxInput); + + /** starts writing of a "skippable" section of data into the given output stream + @param _rxOutput the stream the stream to write to. Must support the + <type scope="com::sun::star::io">XMarkableStream</type> interface + @param _nPresumedLength estimation for the length of the upcoming section. If greater 0, this + value will be written as section length and corrected (in the dtor) only if + needed. If you know how much bytes you are about to write, you may + want to use this param, saving some stream operations this way. + */ + OStreamSection(const staruno::Reference< stario::XDataOutputStream >& _rxOutput, sal_Int32 _nPresumedLength = 0); + + /** dtor. <BR>If constructed for writing, the section "opened" by this object will be "closed".<BR> + If constructed for reading, any remaining bytes 'til the end of the section will be skipped. + */ + ~OStreamSection(); +}; + +} // namespace utl + +#endif // _UNOTOOLS_STREAMSECTION_HXX_ + + |