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       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                 :            : #include "unotools/unotoolsdllapi.h"
      20                 :            : 
      21                 :            : #ifndef _UNOTOOLS_STREAMHELPER_HXX_
      22                 :            : #define _UNOTOOLS_STREAMHELPER_HXX_
      23                 :            : #include <com/sun/star/io/XInputStream.hpp>
      24                 :            : #include <com/sun/star/io/XSeekable.hpp>
      25                 :            : #include <osl/mutex.hxx>
      26                 :            : #include <cppuhelper/implbase2.hxx>
      27                 :            : #include <tools/stream.hxx>
      28                 :            : 
      29                 :            : namespace utl
      30                 :            : {
      31                 :            :     namespace stario    = ::com::sun::star::io;
      32                 :            :     namespace staruno   = ::com::sun::star::uno;
      33                 :            : 
      34                 :            : /**
      35                 :            :  * The helper implementation for a using input streams based on SvLockBytes.
      36                 :            :  *
      37                 :            :  * @author  Dirk Grobler
      38                 :            :  * @since   00/28/03
      39                 :            :  */
      40                 :            :     typedef ::cppu::WeakImplHelper2<stario::XInputStream, stario::XSeekable> InputStreamHelper_Base;
      41                 :            :     // needed for some compilers
      42 [ +  - ][ +  - ]:          4 : class UNOTOOLS_DLLPUBLIC OInputStreamHelper : public InputStreamHelper_Base
                 [ -  + ]
      43                 :            : {
      44                 :            :     ::osl::Mutex    m_aMutex;
      45                 :            :     SvLockBytesRef  m_xLockBytes;
      46                 :            :     sal_uInt32      m_nActPos;
      47                 :            :     sal_Int32       m_nAvailable;   // this is typically the chunk(buffer) size
      48                 :            : 
      49                 :            : public:
      50                 :          2 :     OInputStreamHelper(const SvLockBytesRef& _xLockBytes,
      51                 :            :                        sal_uInt32 _nAvailable,
      52                 :            :                        sal_uInt32 _nPos = 0)
      53                 :            :         :m_xLockBytes(_xLockBytes)
      54                 :            :         ,m_nActPos(_nPos)
      55         [ +  - ]:          2 :         ,m_nAvailable(_nAvailable){}
      56                 :            : 
      57                 :            : // staruno::XInterface
      58                 :            :     virtual void SAL_CALL acquire() throw ();
      59                 :            :     virtual void SAL_CALL release() throw ();
      60                 :            : 
      61                 :            : // stario::XInputStream
      62                 :            :     virtual sal_Int32 SAL_CALL readBytes( staruno::Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead ) throw(stario::NotConnectedException, stario::BufferSizeExceededException, stario::IOException, staruno::RuntimeException);
      63                 :            :     virtual sal_Int32 SAL_CALL readSomeBytes( staruno::Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead ) throw(stario::NotConnectedException, stario::BufferSizeExceededException, stario::IOException, staruno::RuntimeException);
      64                 :            :     virtual void SAL_CALL skipBytes( sal_Int32 nBytesToSkip ) throw(stario::NotConnectedException, stario::BufferSizeExceededException, stario::IOException, staruno::RuntimeException);
      65                 :            :     virtual sal_Int32 SAL_CALL available(  ) throw(stario::NotConnectedException, stario::IOException, staruno::RuntimeException);
      66                 :            :     virtual void SAL_CALL closeInput(  ) throw (stario::NotConnectedException, stario::IOException, staruno::RuntimeException);
      67                 :            : 
      68                 :            :     virtual void SAL_CALL seek( sal_Int64 location ) throw(::com::sun::star::lang::IllegalArgumentException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
      69                 :            :     virtual sal_Int64 SAL_CALL getPosition(  ) throw(::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
      70                 :            :     virtual sal_Int64 SAL_CALL getLength(  ) throw(::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
      71                 :            : };
      72                 :            : 
      73                 :            : }   // namespace utl
      74                 :            : 
      75                 :            : 
      76                 :            : #endif // _UNOTOOLS_STREAM_WRAPPER_HXX_
      77                 :            : 
      78                 :            : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */