comphelper/source/streaming/oslfile2streamwrap.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 <comphelper/oslfile2streamwrap.hxx>
  21
  22 #include <algorithm>
  23
  24 namespace comphelper
  25 {
  26     using namespace osl;
  27
  28 //------------------------------------------------------------------
  29 OSLInputStreamWrapper::OSLInputStreamWrapper( File& _rFile )
  30     : m_pFile(&_rFile)
  31 {
  32 }
  33
  34 //------------------------------------------------------------------
  35 OSLInputStreamWrapper::~OSLInputStreamWrapper()
  36 {
  37 }
  38
  39 //------------------------------------------------------------------------------
  40 sal_Int32 SAL_CALL OSLInputStreamWrapper::readBytes(staruno::Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead)
  41                 throw( stario::NotConnectedException, stario::BufferSizeExceededException, staruno::RuntimeException )
  42 {
  43     if (!m_pFile)
  44         throw stario::NotConnectedException(OUString(), static_cast<staruno::XWeak*>(this));
  45
  46     if (nBytesToRead < 0)
  47         throw stario::BufferSizeExceededException(OUString(),static_cast<staruno::XWeak*>(this));
  48
  49     ::osl::MutexGuard aGuard( m_aMutex );
  50
  51     aData.realloc(nBytesToRead);
  52
  53     sal_uInt64 nRead = 0;
  54     FileBase::RC eError = m_pFile->read((void*)aData.getArray(), nBytesToRead, nRead);
  55     if (eError != FileBase::E_None)
  56         throw stario::BufferSizeExceededException(OUString(),static_cast<staruno::XWeak*>(this));
  57
  58     // Wenn gelesene Zeichen < MaxLength, staruno::Sequence anpassen
  59     if (nRead < (sal_uInt32)nBytesToRead)
  60         aData.realloc( sal::static_int_cast< sal_Int32 >(nRead) );
  61
  62     return sal::static_int_cast< sal_Int32 >(nRead);
  63 }
  64
  65 //------------------------------------------------------------------------------
  66 sal_Int32 SAL_CALL OSLInputStreamWrapper::readSomeBytes(staruno::Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead) throw( stario::NotConnectedException, stario::BufferSizeExceededException, staruno::RuntimeException )
  67 {
  68     if (!m_pFile)
  69         throw stario::NotConnectedException(OUString(), static_cast<staruno::XWeak*>(this));
  70
  71     if (nMaxBytesToRead < 0)
  72         throw stario::BufferSizeExceededException(OUString(),static_cast<staruno::XWeak*>(this));
  73
  74     return readBytes(aData, nMaxBytesToRead);
  75 }
  76
  77 //------------------------------------------------------------------------------
  78 void SAL_CALL OSLInputStreamWrapper::skipBytes(sal_Int32 nBytesToSkip) throw( stario::NotConnectedException, stario::BufferSizeExceededException, staruno::RuntimeException )
  79 {
  80     ::osl::MutexGuard aGuard( m_aMutex );
  81     if (!m_pFile)
  82         throw stario::NotConnectedException(OUString(), static_cast<staruno::XWeak*>(this));
  83
  84     sal_uInt64 nCurrentPos;
  85     m_pFile->getPos(nCurrentPos);
  86
  87     sal_uInt64 nNewPos = nCurrentPos + nBytesToSkip;
  88     FileBase::RC eError = m_pFile->setPos(osl_Pos_Absolut, nNewPos);
  89     if (eError != FileBase::E_None)
  90     {
  91         throw stario::NotConnectedException(OUString(), static_cast<staruno::XWeak*>(this));
  92     }
  93 }
  94
  95 //------------------------------------------------------------------------------
  96 sal_Int32 SAL_CALL OSLInputStreamWrapper::available() throw( stario::NotConnectedException, staruno::RuntimeException )
  97 {
  98     ::osl::MutexGuard aGuard( m_aMutex );
  99     if (!m_pFile)
 100         throw stario::NotConnectedException(OUString(), static_cast<staruno::XWeak*>(this));
 101
 102     sal_uInt64 nPos;
 103     FileBase::RC eError = m_pFile->getPos(nPos);
 104     if (eError != FileBase::E_None)
 105         throw stario::NotConnectedException(OUString(), static_cast<staruno::XWeak*>(this));
 106
 107     sal_uInt64 nDummy = 0;
 108     eError = m_pFile->setPos(osl_Pos_End, nDummy);
 109     if (eError != FileBase::E_None)
 110        throw stario::NotConnectedException(OUString(),static_cast<staruno::XWeak*>(this));
 111
 112     sal_uInt64 nAvailable;
 113     eError = m_pFile->getPos(nAvailable);
 114     if (eError != FileBase::E_None)
 115        throw stario::NotConnectedException(OUString(),static_cast<staruno::XWeak*>(this));
 116
 117     nAvailable = nAvailable - nPos;
 118     eError = m_pFile->setPos(osl_Pos_Absolut, nPos);
 119     if (eError != FileBase::E_None)
 120        throw stario::NotConnectedException(OUString(),static_cast<staruno::XWeak*>(this));
 121     return sal::static_int_cast< sal_Int32 >(
 122         std::max(nAvailable, sal::static_int_cast< sal_uInt64 >(SAL_MAX_INT32)));
 123 }
 124
 125 //------------------------------------------------------------------------------
 126 void SAL_CALL OSLInputStreamWrapper::closeInput() throw( stario::NotConnectedException, staruno::RuntimeException )
 127 {
 128     if (!m_pFile)
 129         throw stario::NotConnectedException(OUString(), static_cast<staruno::XWeak*>(this));
 130
 131     m_pFile->close();
 132
 133     m_pFile = NULL;
 134 }
 135
 136 /*************************************************************************/
 137 // stario::XOutputStream
 138 //------------------------------------------------------------------------------
 139
 140 OSLOutputStreamWrapper::OSLOutputStreamWrapper(osl::File & _rFile):
 141     rFile(_rFile)
 142 {}
 143
 144 OSLOutputStreamWrapper::~OSLOutputStreamWrapper() {}
 145
 146 void SAL_CALL OSLOutputStreamWrapper::writeBytes(const staruno::Sequence< sal_Int8 >& aData) throw( stario::NotConnectedException, stario::BufferSizeExceededException, staruno::RuntimeException )
 147 {
 148     sal_uInt64 nWritten;
 149     FileBase::RC eError = rFile.write(aData.getConstArray(),aData.getLength(), nWritten);
 150     if (eError != FileBase::E_None
 151         || nWritten != sal::static_int_cast< sal_uInt32 >(aData.getLength()))
 152     {
 153         throw stario::BufferSizeExceededException(OUString(),static_cast<staruno::XWeak*>(this));
 154     }
 155 }
 156
 157 //------------------------------------------------------------------
 158 void SAL_CALL OSLOutputStreamWrapper::flush() throw( stario::NotConnectedException, stario::BufferSizeExceededException, staruno::RuntimeException )
 159 {
 160 }
 161
 162 //------------------------------------------------------------------
 163 void SAL_CALL OSLOutputStreamWrapper::closeOutput() throw( stario::NotConnectedException, stario::BufferSizeExceededException, staruno::RuntimeException )
 164 {
 165     rFile.close();
 166 }
 167
 168 } // namespace comphelper
 169
 170
 171 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */