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Diffstat (limited to 'comphelper/source/streaming/seqstream.cxx')
| -rw-r--r-- | comphelper/source/streaming/seqstream.cxx | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/comphelper/source/streaming/seqstream.cxx b/comphelper/source/streaming/seqstream.cxx new file mode 100644 index 000000000000..469a9a963468 --- /dev/null +++ b/comphelper/source/streaming/seqstream.cxx @@ -0,0 +1,160 @@ +/************************************************************************* + * + * $RCSfile: seqstream.cxx,v $ + * + * $Revision: 1.1.1.1 $ + * + * last change: $Author: fs $ $Date: 2000-09-29 11:28:15 $ + * + * The Contents of this file are made available subject to the terms of + * either of the following licenses + * + * - GNU Lesser General Public License Version 2.1 + * - Sun Industry Standards Source License Version 1.1 + * + * Sun Microsystems Inc., October, 2000 + * + * GNU Lesser General Public License Version 2.1 + * ============================================= + * Copyright 2000 by Sun Microsystems, Inc. + * 901 San Antonio Road, Palo Alto, CA 94303, USA + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License version 2.1, as published by the Free Software Foundation. + * + * This library 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 for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + * + * Sun Industry Standards Source License Version 1.1 + * ================================================= + * The contents of this file are subject to the Sun Industry Standards + * Source License Version 1.1 (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.openoffice.org/license.html. + * + * Software provided under this License is provided on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, + * WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS, + * MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING. + * See the License for the specific provisions governing your rights and + * obligations concerning the Software. + * + * The Initial Developer of the Original Code is: Sun Microsystems, Inc. + * + * Copyright: 2000 by Sun Microsystems, Inc. + * + * All Rights Reserved. + * + * Contributor(s): _______________________________________ + * + * + ************************************************************************/ + +#ifndef _COMPHELPER_SEQSTREAM_HXX +#include <comphelper/seqstream.hxx> +#endif + +#include <memory.h> // for memcpy + +namespace comphelper +{ + +//--------------------------------------------------------------------------------------------- +// class SequenceInputStream +//--------------------------------------------------------------------------------------------- + +//------------------------------------------------------------------ +SequenceInputStream::SequenceInputStream(const ByteSequence& rData) +: m_aData(rData) +, m_nPos(0) +{ +} + +// checks if closed, returns available size, not mutex-protected +//------------------------------------------------------------------ +inline sal_Int32 SequenceInputStream::avail() +{ + if (m_nPos == -1) + throw stario::NotConnectedException(::rtl::OUString(), *this); + + return m_aData.getLength() - m_nPos; +} + +// com::sun::star::io::XInputStream +//------------------------------------------------------------------ +sal_Int32 SAL_CALL SequenceInputStream::readBytes( staruno::Sequence<sal_Int8>& aData, sal_Int32 nBytesToRead ) + throw(stario::NotConnectedException, stario::BufferSizeExceededException, + stario::IOException, staruno::RuntimeException) +{ + ::osl::MutexGuard aGuard( m_aMutex ); + + sal_Int32 nAvail = avail(); + + if (nBytesToRead < 0) + throw stario::BufferSizeExceededException(::rtl::OUString(),*this); + + if (nAvail < nBytesToRead) + nBytesToRead = nAvail; + + aData.realloc(nBytesToRead); + memcpy(aData.getArray(), m_aData.getConstArray() + m_nPos, nBytesToRead); + m_nPos += nBytesToRead; + + return nBytesToRead; +} + +//------------------------------------------------------------------ +sal_Int32 SAL_CALL SequenceInputStream::readSomeBytes( staruno::Sequence<sal_Int8>& aData, sal_Int32 nMaxBytesToRead ) + throw(stario::NotConnectedException, stario::BufferSizeExceededException, + stario::IOException, staruno::RuntimeException) +{ + // all data is available at once + return readBytes(aData, nMaxBytesToRead); +} + +//------------------------------------------------------------------ +void SAL_CALL SequenceInputStream::skipBytes( sal_Int32 nBytesToSkip ) + throw(stario::NotConnectedException, stario::BufferSizeExceededException, + stario::IOException, staruno::RuntimeException) +{ + ::osl::MutexGuard aGuard( m_aMutex ); + + sal_Int32 nAvail = avail(); + + if (nBytesToSkip < 0) + throw stario::BufferSizeExceededException(::rtl::OUString(),*this); + + if (nAvail < nBytesToSkip) + nBytesToSkip = nAvail; + + m_nPos += nBytesToSkip; +} + +//------------------------------------------------------------------ +sal_Int32 SAL_CALL SequenceInputStream::available( ) + throw(stario::NotConnectedException, stario::IOException, staruno::RuntimeException) +{ + ::osl::MutexGuard aGuard( m_aMutex ); + + return avail(); +} + +//------------------------------------------------------------------ +void SAL_CALL SequenceInputStream::closeInput( ) + throw(stario::NotConnectedException, stario::IOException, staruno::RuntimeException) +{ + if (m_nPos == -1) + throw stario::NotConnectedException(::rtl::OUString(), *this); + + m_nPos = -1; +} +} // namespace comphelper |