LCOV - code coverage report
Current view: top level - io/source/stm - streamhelper.hxx (source / functions) Hit Total Coverage
Test: commit 10e77ab3ff6f4314137acd6e2702a6e5c1ce1fae Lines: 9 15 60.0 %
Date: 2014-11-03 Functions: 9 20 45.0 %
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             : 
      20             : #ifndef INCLUDED_IO_SOURCE_STM_STREAMHELPER_HXX
      21             : #define INCLUDED_IO_SOURCE_STM_STREAMHELPER_HXX
      22             : 
      23             : // Save NDEBUG state
      24             : #ifdef NDEBUG
      25             : #define STREAMHELPER_HXX_HAD_NDEBUG
      26             : #undef NDEBUG
      27             : #endif
      28             : 
      29             : #if OSL_DEBUG_LEVEL == 0
      30             : #define NDEBUG
      31             : #endif
      32             : #include <assert.h>
      33             : 
      34             : #define Max( a, b )     (((a)>(b)) ? (a) : (b) )
      35             : #define Min( a, b )     (((a)<(b)) ? (a) : (b) )
      36             : 
      37             : namespace io_stm {
      38             : 
      39           0 : class I_FIFO_OutOfBoundsException :
      40             :                 public Exception
      41             : {};
      42             : 
      43           0 : class I_FIFO_OutOfMemoryException :
      44             :                 public Exception
      45             : {};
      46             : 
      47          88 : class I_FIFO
      48             : {
      49             : public:
      50             : 
      51             : 
      52             :     virtual void    write( const Sequence<sal_Int8> &) throw( I_FIFO_OutOfMemoryException,
      53             :                                                               I_FIFO_OutOfBoundsException )=0;
      54             : 
      55             :     virtual void    read( Sequence<sal_Int8> & , sal_Int32 nBytesToRead )
      56             :                                                        throw( I_FIFO_OutOfBoundsException )=0;
      57             :     virtual void    skip( sal_Int32 nBytesToSkip )
      58             :                                                        throw( I_FIFO_OutOfBoundsException )=0;
      59             :     virtual sal_Int32   getSize() const throw(  )  =0;
      60             :     virtual void    shrink() throw() = 0;
      61             : 
      62           6 :     virtual ~I_FIFO() {};
      63             : };
      64             : 
      65             : 
      66           0 : class IRingBuffer_OutOfBoundsException :
      67             :                 public Exception
      68             : {};
      69             : 
      70           0 : class IRingBuffer_OutOfMemoryException :
      71             :                 public Exception
      72             : {};
      73             : 
      74         252 : class IRingBuffer
      75             : {
      76             : public:
      77             :     /***
      78             :     * overwrites data at given position. Size is automatically extended, when
      79             :     * data is written beyond end.
      80             :     *
      81             :     ***/
      82             : 
      83             :     virtual void    writeAt( sal_Int32 nPos, const Sequence<sal_Int8> &)
      84             :         throw( IRingBuffer_OutOfMemoryException,
      85             :                IRingBuffer_OutOfBoundsException )=0;
      86             :     virtual void    readAt( sal_Int32 nPos, Sequence<sal_Int8> & , sal_Int32 nBytesToRead ) const
      87             :         throw( IRingBuffer_OutOfBoundsException )=0;
      88             :     virtual sal_Int32   getSize() const throw(  )  =0;
      89             :     virtual void    forgetFromStart( sal_Int32 nBytesToForget ) throw(IRingBuffer_OutOfBoundsException)=0;
      90             :     virtual void    forgetFromEnd( sal_Int32 nBytesToForget ) throw(IRingBuffer_OutOfBoundsException)=0;
      91             :     virtual void    shrink() throw() = 0;
      92           6 :     virtual ~IRingBuffer() {};
      93             : };
      94             : 
      95             : 
      96             : class MemRingBuffer :
      97             :         public IRingBuffer
      98             : {
      99             : public:
     100             :     MemRingBuffer();
     101             :     virtual ~MemRingBuffer();
     102             : 
     103             :     virtual void    writeAt( sal_Int32 nPos, const Sequence<sal_Int8> &)
     104             :                                                     throw(  IRingBuffer_OutOfMemoryException,
     105             :                                                                 IRingBuffer_OutOfBoundsException ) SAL_OVERRIDE;
     106             :     virtual void    readAt( sal_Int32 nPos, Sequence<sal_Int8> & , sal_Int32 nBytesToRead ) const
     107             :                                                     throw( IRingBuffer_OutOfBoundsException ) SAL_OVERRIDE;
     108             :     virtual sal_Int32   getSize() const throw(  ) SAL_OVERRIDE;
     109             :     virtual void    forgetFromStart( sal_Int32 nBytesToForget ) throw(IRingBuffer_OutOfBoundsException) SAL_OVERRIDE;
     110             :     virtual void    forgetFromEnd( sal_Int32 nBytesToForget ) throw(IRingBuffer_OutOfBoundsException) SAL_OVERRIDE;
     111             : 
     112             :     virtual void shrink() throw() SAL_OVERRIDE;
     113             : 
     114             : private:
     115             : 
     116             :     void resizeBuffer( sal_Int32 nMinSize ) throw( IRingBuffer_OutOfMemoryException );
     117       19548 :     inline void checkInvariants()
     118             :     {
     119             :         assert( m_nBufferLen >= 0 );
     120             :         assert( m_nOccupiedBuffer >= 0 );
     121             :         assert( m_nOccupiedBuffer <= m_nBufferLen );
     122             :         assert( m_nStart >= 0 );
     123             :         assert( 0 == m_nStart || m_nStart < m_nBufferLen );
     124       19548 :     }
     125             : 
     126             :     sal_Int8    *m_p;
     127             :     sal_Int32   m_nBufferLen;
     128             :     sal_Int32   m_nStart;
     129             :     sal_Int32   m_nOccupiedBuffer;
     130             : };
     131             : 
     132             : 
     133         100 : class MemFIFO :
     134             :     public  I_FIFO,
     135             :     private MemRingBuffer
     136             : {
     137             : public:
     138             :     virtual void    write( const Sequence<sal_Int8> &) throw( I_FIFO_OutOfMemoryException,
     139             :                                                               I_FIFO_OutOfBoundsException ) SAL_OVERRIDE;
     140             :     virtual void    read( Sequence<sal_Int8> & , sal_Int32 nBytesToRead )
     141             :                                                        throw( I_FIFO_OutOfBoundsException ) SAL_OVERRIDE;
     142             :     virtual void    skip( sal_Int32 nBytesToSkip ) throw( I_FIFO_OutOfBoundsException ) SAL_OVERRIDE;
     143        5144 :     virtual sal_Int32   getSize()  const throw(  ) SAL_OVERRIDE
     144        5144 :                         { return MemRingBuffer::getSize(); }
     145           0 :     virtual void    shrink() throw() SAL_OVERRIDE
     146           0 :                         { MemRingBuffer::shrink(); }
     147             : 
     148             : };
     149             : 
     150             : // Restore NDEBUG state
     151             : #ifdef STREAMHELPER_HXX_HAD_NDEBUG
     152             : #define NDEBUG
     153             : #else
     154             : #undef NDEBUG
     155             : #endif
     156             : 
     157             : }
     158             : 
     159             : #endif // INCLUDED_IO_SOURCE_STM_STREAMHELPER_HXX
     160             : 
     161             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

Generated by: LCOV version 1.10