unotools/source/streaming/streamhelper.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <unotools/streamhelper.hxx>
  21
  22 namespace utl
  23 {
  24
  25 void SAL_CALL OInputStreamHelper::acquire() throw ()
  26 {
  27     InputStreamHelper_Base::acquire();
  28 }
  29
  30 void SAL_CALL OInputStreamHelper::release() throw ()
  31 {
  32     InputStreamHelper_Base::release();
  33 }
  34
  35 sal_Int32 SAL_CALL OInputStreamHelper::readBytes(staruno::Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead)
  36     throw(stario::NotConnectedException, stario::BufferSizeExceededException, stario::IOException, staruno::RuntimeException, std::exception)
  37 {
  38     if (!m_xLockBytes.Is())
  39         throw stario::NotConnectedException(OUString(), static_cast<staruno::XWeak*>(this));
  40
  41     if (nBytesToRead < 0)
  42         throw stario::BufferSizeExceededException(OUString(), static_cast<staruno::XWeak*>(this));
  43
  44     ::osl::MutexGuard aGuard( m_aMutex );
  45     aData.realloc(nBytesToRead);
  46
  47     sal_Size nRead(0);
  48     ErrCode nError = m_xLockBytes->ReadAt(m_nActPos, (void*)aData.getArray(), nBytesToRead, &nRead);
  49     m_nActPos += nRead;
  50
  51     if (nError != ERRCODE_NONE)
  52         throw stario::IOException(OUString(), static_cast<staruno::XWeak*>(this));
  53
  54     // adjust sequence if data read is lower than the desired data
  55     if (nRead < (sal_uInt32)nBytesToRead)
  56         aData.realloc( nRead );
  57
  58     return nRead;
  59 }
  60
  61 void SAL_CALL OInputStreamHelper::seek( sal_Int64 location ) throw(::com::sun::star::lang::IllegalArgumentException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException, std::exception)
  62 {
  63     ::osl::MutexGuard aGuard( m_aMutex );
  64     m_nActPos = location;
  65 }
  66
  67 sal_Int64 SAL_CALL OInputStreamHelper::getPosition(  ) throw(::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException, std::exception)
  68 {
  69     return m_nActPos;
  70 }
  71
  72 sal_Int64 SAL_CALL OInputStreamHelper::getLength(  ) throw(::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException, std::exception)
  73 {
  74     if (!m_xLockBytes.Is())
  75         return 0;
  76
  77     ::osl::MutexGuard aGuard( m_aMutex );
  78     SvLockBytesStat aStat;
  79     m_xLockBytes->Stat( &aStat, SVSTATFLAG_DEFAULT );
  80     return aStat.nSize;
  81 }
  82
  83 sal_Int32 SAL_CALL OInputStreamHelper::readSomeBytes(staruno::Sequence< sal_Int8 >& aData,
  84                                                      sal_Int32 nMaxBytesToRead)
  85     throw (stario::NotConnectedException, stario::BufferSizeExceededException, stario::IOException, staruno::RuntimeException, std::exception)
  86 {
  87     // read all data desired
  88     return readBytes(aData, nMaxBytesToRead);
  89 }
  90
  91 void SAL_CALL OInputStreamHelper::skipBytes(sal_Int32 nBytesToSkip)
  92     throw (stario::NotConnectedException, stario::BufferSizeExceededException, stario::IOException, staruno::RuntimeException, std::exception)
  93 {
  94     ::osl::MutexGuard aGuard( m_aMutex );
  95     if (!m_xLockBytes.Is())
  96         throw stario::NotConnectedException(OUString(), static_cast<staruno::XWeak*>(this));
  97
  98     if (nBytesToSkip < 0)
  99         throw stario::BufferSizeExceededException(OUString(), static_cast<staruno::XWeak*>(this));
 100
 101     m_nActPos += nBytesToSkip;
 102 }
 103
 104 sal_Int32 SAL_CALL OInputStreamHelper::available()
 105     throw (stario::NotConnectedException, stario::IOException, staruno::RuntimeException, std::exception)
 106 {
 107     ::osl::MutexGuard aGuard( m_aMutex );
 108     if (!m_xLockBytes.Is())
 109         throw stario::NotConnectedException(OUString(), static_cast<staruno::XWeak*>(this));
 110
 111     return m_nAvailable;
 112 }
 113
 114 void SAL_CALL OInputStreamHelper::closeInput()
 115     throw (stario::NotConnectedException, stario::IOException, staruno::RuntimeException, std::exception)
 116 {
 117     ::osl::MutexGuard aGuard( m_aMutex );
 118     if (!m_xLockBytes.Is())
 119         throw stario::NotConnectedException(OUString(), static_cast<staruno::XWeak*>(this));
 120
 121     m_xLockBytes = NULL;
 122 }
 123
 124 } // namespace utl
 125
 126 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */