LCOV - code coverage report
Current view: top level - usr/local/src/libreoffice/include/comphelper - seqstream.hxx (source / functions) Hit Total Coverage
Test: libreoffice_filtered.info Lines: 2 2 100.0 %
Date: 2013-07-09 Functions: 4 4 100.0 %
Legend: Lines: hit not hit

          Line data    Source code
       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             : #ifndef _COMPHELPER_SEQSTREAM_HXX
      20             : #define _COMPHELPER_SEQSTREAM_HXX
      21             : 
      22             : #include <com/sun/star/uno/Sequence.hxx>
      23             : #include <com/sun/star/uno/Reference.hxx>
      24             : #include <com/sun/star/io/XInputStream.hpp>
      25             : #include <com/sun/star/io/XOutputStream.hpp>
      26             : #include <com/sun/star/io/XSeekable.hpp>
      27             : #include <osl/mutex.hxx>
      28             : #include <cppuhelper/implbase1.hxx>
      29             : #include <cppuhelper/implbase2.hxx>
      30             : #include "comphelper/comphelperdllapi.h"
      31             : 
      32             : namespace comphelper
      33             : {
      34             : 
      35             :     typedef ::com::sun::star::uno::Sequence<sal_Int8> ByteSequence;
      36             : 
      37             : //==================================================================
      38             : // SequenceInputStream
      39             : // stream for reading data from a sequence of bytes
      40             : //==================================================================
      41             : 
      42             : 
      43        5920 : class COMPHELPER_DLLPUBLIC SequenceInputStream
      44             : : public ::cppu::WeakImplHelper2< ::com::sun::star::io::XInputStream, ::com::sun::star::io::XSeekable >
      45             : {
      46             :     ::osl::Mutex    m_aMutex;
      47             :     ByteSequence    m_aData;
      48             :     sal_Int32       m_nPos;
      49             : 
      50             : public:
      51             :     SequenceInputStream(const ByteSequence& rData);
      52             : 
      53             : // com::sun::star::io::XInputStream
      54             :     virtual sal_Int32 SAL_CALL readBytes( ::com::sun::star::uno::Sequence<sal_Int8>& aData, sal_Int32 nBytesToRead )
      55             :         throw(::com::sun::star::io::NotConnectedException, ::com::sun::star::io::BufferSizeExceededException,
      56             :               ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
      57             : 
      58             :     virtual sal_Int32 SAL_CALL readSomeBytes( ::com::sun::star::uno::Sequence<sal_Int8>& aData, sal_Int32 nMaxBytesToRead )
      59             :         throw(::com::sun::star::io::NotConnectedException, ::com::sun::star::io::BufferSizeExceededException,
      60             :               ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
      61             : 
      62             :     virtual void SAL_CALL skipBytes( sal_Int32 nBytesToSkip )
      63             :         throw(::com::sun::star::io::NotConnectedException, ::com::sun::star::io::BufferSizeExceededException,
      64             :               ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
      65             : 
      66             :     virtual sal_Int32 SAL_CALL available(  )
      67             :         throw(::com::sun::star::io::NotConnectedException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
      68             : 
      69             :     virtual void SAL_CALL closeInput(  )
      70             :         throw(::com::sun::star::io::NotConnectedException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
      71             : 
      72             :     virtual void SAL_CALL seek( sal_Int64 location ) throw (::com::sun::star::lang::IllegalArgumentException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
      73             :     virtual sal_Int64 SAL_CALL getPosition(  ) throw (::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
      74             :     virtual sal_Int64 SAL_CALL getLength(  ) throw (::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
      75             : 
      76             : private:
      77             :     inline sal_Int32 avail();
      78             : };
      79             : typedef ::cppu::WeakImplHelper1< ::com::sun::star::io::XOutputStream > OSequenceOutputStream_Base;
      80             : 
      81             : class OSequenceOutputStream : public OSequenceOutputStream_Base
      82             : {
      83             : protected:
      84             :     ::com::sun::star::uno::Sequence< sal_Int8 >&    m_rSequence;
      85             :     double                                          m_nResizeFactor;
      86             :     sal_Int32                                       m_nMinimumResize;
      87             :     sal_Int32                                       m_nMaximumResize;
      88             :     sal_Int32                                       m_nSize;
      89             :         // the size of the virtual stream. This is not the size of the sequence, but the number of bytes written
      90             :         // into the stream at a given moment.
      91             : 
      92             :     sal_Bool                                        m_bConnected;
      93             :         // closeOutput has been called ?
      94             : 
      95             :     ::osl::Mutex                                    m_aMutex;
      96             : 
      97             : protected:
      98           2 :     ~OSequenceOutputStream() { if (m_bConnected) closeOutput(); }
      99             : 
     100             : public:
     101             :     /** constructs the object. Everything written into the stream through the XOutputStream methods will be forwarded
     102             :         to the sequence, reallocating it if neccessary. Writing will start at offset 0 within the sequence.
     103             :         @param      _rSeq               a reference to the sequence which will be used for output.
     104             :                                         The caller is responsible for taking care of the lifetime of the stream
     105             :                                         object and the sequence. If you're in doubt about this, use <code>closeOutput</code>
     106             :                                         before destroying the sequence
     107             :         @param      _nResizeFactor      the factor which is used for resizing the sequence when neccessary. In every
     108             :                                         resize step, the new sequence size will be calculated by multiplying the current
     109             :                                         size with this factor, rounded off to the next multiple of 4.
     110             :         @param      _nMinimumResize     the minmal number of bytes which is additionally allocated on resizing
     111             :         @param      _nMaximumResize     as the growth of the stream size is exponential, you may want to specify a
     112             :                                         maxmimum amount of memory which the sequence will grow by. If -1 is used,
     113             :                                         no limit is applied
     114             :         @see        closeOutput
     115             :     */
     116             :     OSequenceOutputStream(
     117             :         ::com::sun::star::uno::Sequence< sal_Int8 >& _rSeq,
     118             :         double _nResizeFactor = 1.3,
     119             :         sal_Int32 _nMinimumResize = 128,
     120             :         sal_Int32 _nMaximumResize = -1
     121             :         );
     122             : 
     123             :     /// same as XOutputStream::writeBytes (as expected :)
     124             :     virtual void SAL_CALL writeBytes( const ::com::sun::star::uno::Sequence< sal_Int8 >& aData ) throw(::com::sun::star::io::NotConnectedException, ::com::sun::star::io::BufferSizeExceededException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
     125             :     /// this is a dummy in this implementation, no buffering is used
     126             :     virtual void SAL_CALL flush(  ) throw(::com::sun::star::io::NotConnectedException, ::com::sun::star::io::BufferSizeExceededException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
     127             :     /** closes the output stream. In the case of this class, this means that the sequence used for writing is
     128             :         resized to the really used size and not used any further, every subsequent call to one of the XOutputStream
     129             :         methods will throw a <code>NotConnectedException</code>.
     130             :     */
     131             :     virtual void SAL_CALL closeOutput(  ) throw(::com::sun::star::io::NotConnectedException, ::com::sun::star::io::BufferSizeExceededException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
     132             : };
     133             : 
     134             : } // namespace comphelper
     135             : 
     136             : #endif //_COMPHELPER_SEQSTREAM_HXX
     137             : 
     138             : 
     139             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

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