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Diffstat (limited to '')
| -rw-r--r-- | ucb/source/ucp/file/filinpstr.cxx | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/ucb/source/ucp/file/filinpstr.cxx b/ucb/source/ucp/file/filinpstr.cxx new file mode 100644 index 000000000..5838dcda3 --- /dev/null +++ b/ucb/source/ucp/file/filinpstr.cxx @@ -0,0 +1,165 @@ +/* -*- 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 <sal/config.h> + +#include <com/sun/star/io/IOException.hpp> +#include <com/sun/star/lang/IllegalArgumentException.hpp> + +#include "filinpstr.hxx" +#include "filerror.hxx" + +using namespace fileaccess; +using namespace com::sun::star; + +#if OSL_DEBUG_LEVEL > 0 +#define THROW_WHERE SAL_WHERE +#else +#define THROW_WHERE "" +#endif + +XInputStream_impl::XInputStream_impl( const OUString& aUncPath, bool bLock ) + : m_aFile( aUncPath ), + m_nErrorCode( TASKHANDLER_NO_ERROR ), + m_nMinorErrorCode( TASKHANDLER_NO_ERROR ) +{ + sal_uInt32 nFlags = osl_File_OpenFlag_Read; + if ( !bLock ) + nFlags |= osl_File_OpenFlag_NoLock; + + osl::FileBase::RC err = m_aFile.open( nFlags ); + if( err != osl::FileBase::E_None ) + { + m_nIsOpen = false; + m_aFile.close(); + + m_nErrorCode = TASKHANDLING_OPEN_FOR_INPUTSTREAM; + m_nMinorErrorCode = err; + } + else + m_nIsOpen = true; +} + + +XInputStream_impl::~XInputStream_impl() +{ + try + { + closeInput(); + } + catch (io::IOException const &) + { + OSL_FAIL("unexpected situation"); + } + catch (uno::RuntimeException const &) + { + OSL_FAIL("unexpected situation"); + } +} + +sal_Int32 SAL_CALL +XInputStream_impl::readBytes( + uno::Sequence< sal_Int8 >& aData, + sal_Int32 nBytesToRead ) +{ + if( ! m_nIsOpen ) throw io::IOException( THROW_WHERE ); + + aData.realloc(nBytesToRead); + //TODO! translate memory exhaustion (if it were detectable...) into + // io::BufferSizeExceededException + + sal_uInt64 nrc(0); + if(m_aFile.read( aData.getArray(),sal_uInt64(nBytesToRead),nrc ) + != osl::FileBase::E_None) + throw io::IOException( THROW_WHERE ); + + // Shrink aData in case we read less than nBytesToRead (XInputStream + // documentation does not tell whether this is required, and I do not know + // if any code relies on this, so be conservative---SB): + if (sal::static_int_cast<sal_Int32>(nrc) != nBytesToRead) + aData.realloc(sal_Int32(nrc)); + return static_cast<sal_Int32>(nrc); +} + +sal_Int32 SAL_CALL +XInputStream_impl::readSomeBytes( + uno::Sequence< sal_Int8 >& aData, + sal_Int32 nMaxBytesToRead ) +{ + return readBytes( aData,nMaxBytesToRead ); +} + + +void SAL_CALL +XInputStream_impl::skipBytes( sal_Int32 nBytesToSkip ) +{ + m_aFile.setPos( osl_Pos_Current, sal_uInt64( nBytesToSkip ) ); +} + + +sal_Int32 SAL_CALL +XInputStream_impl::available() +{ + sal_Int64 avail = getLength() - getPosition(); + return std::min<sal_Int64>(avail, SAL_MAX_INT32); +} + + +void SAL_CALL +XInputStream_impl::closeInput() +{ + if( m_nIsOpen ) + { + osl::FileBase::RC err = m_aFile.close(); + if( err != osl::FileBase::E_None ) + throw io::IOException( THROW_WHERE ); + m_nIsOpen = false; + } +} + + +void SAL_CALL +XInputStream_impl::seek( sal_Int64 location ) +{ + if( location < 0 ) + throw lang::IllegalArgumentException( THROW_WHERE, uno::Reference< uno::XInterface >(), 0 ); + if( osl::FileBase::E_None != m_aFile.setPos( osl_Pos_Absolut, sal_uInt64( location ) ) ) + throw io::IOException( THROW_WHERE ); +} + + +sal_Int64 SAL_CALL +XInputStream_impl::getPosition() +{ + sal_uInt64 uPos; + if( osl::FileBase::E_None != m_aFile.getPos( uPos ) ) + throw io::IOException( THROW_WHERE ); + return sal_Int64( uPos ); +} + +sal_Int64 SAL_CALL +XInputStream_impl::getLength() +{ + sal_uInt64 uEndPos; + if ( m_aFile.getSize(uEndPos) != osl::FileBase::E_None ) + throw io::IOException( THROW_WHERE ); + return sal_Int64( uEndPos ); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |