1 /************************************************************************* 2 * 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * Copyright 2000, 2010 Oracle and/or its affiliates. 6 * 7 * OpenOffice.org - a multi-platform office productivity suite 8 * 9 * This file is part of OpenOffice.org. 10 * 11 * OpenOffice.org is free software: you can redistribute it and/or modify 12 * it under the terms of the GNU Lesser General Public License version 3 13 * only, as published by the Free Software Foundation. 14 * 15 * OpenOffice.org is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU Lesser General Public License version 3 for more details 19 * (a copy is included in the LICENSE file that accompanied this code). 20 * 21 * You should have received a copy of the GNU Lesser General Public License 22 * version 3 along with OpenOffice.org. If not, see 23 * <http://www.openoffice.org/license.html> 24 * for a copy of the LGPLv3 License. 25 * 26 ************************************************************************/ 27 28 #include <precomp.h> 29 #include <cosv/mbstream.hxx> 30 31 // NOT FULLY DECLARED SERVICES 32 #include <string.h> 33 34 35 namespace csv 36 { 37 38 39 40 mbstream::mbstream( uintt i_nSize ) 41 : dpOwnedMemorySpace( new char[i_nSize+1] ), 42 nSize( i_nSize ), 43 nCurPosition( 0 ) 44 { 45 dpOwnedMemorySpace[i_nSize] = '\0'; 46 } 47 48 mbstream::~mbstream() 49 { 50 delete [] dpOwnedMemorySpace; 51 } 52 53 void 54 mbstream::resize( uintt i_nSize ) 55 { 56 DYN char * pNew = new char[i_nSize]; 57 memcpy( pNew, dpOwnedMemorySpace, min(i_nSize,nSize) ); 58 delete [] dpOwnedMemorySpace; 59 dpOwnedMemorySpace = pNew; 60 nSize = i_nSize; 61 } 62 63 uintt 64 mbstream::do_read( void * out_pDest, 65 uintt i_nNrofBytes ) 66 { 67 uintt ret = min( i_nNrofBytes, nSize - nCurPosition ); 68 memcpy( out_pDest, dpOwnedMemorySpace, ret ); 69 nCurPosition += ret; 70 return ret; 71 } 72 73 bool 74 mbstream::inq_eod() const 75 { 76 return nCurPosition == nSize; 77 } 78 79 uintt 80 mbstream::do_write( const void * i_pSrc, 81 uintt i_nNrofBytes ) 82 { 83 resize( max( 3 * (nSize+1) / 2, nCurPosition + i_nNrofBytes) ); 84 memcpy( dpOwnedMemorySpace+nCurPosition, i_pSrc, i_nNrofBytes ); 85 nCurPosition += i_nNrofBytes; 86 return i_nNrofBytes; 87 } 88 89 uintt 90 mbstream::do_seek( intt i_nDistance, 91 seek_dir i_eStartPoint ) 92 { 93 switch ( i_eStartPoint ) 94 { 95 case beg: if ( uintt(i_nDistance) < nSize ) 96 nCurPosition = uintt(i_nDistance); 97 break; 98 case cur: if ( i_nDistance < 0 99 ? uintt(-i_nDistance) <= nCurPosition 100 : uintt(i_nDistance) + nCurPosition < nSize ) 101 nCurPosition = uintt( intt(nCurPosition) + i_nDistance ); 102 break; 103 case end: if ( i_nDistance < 0 104 AND uintt(-i_nDistance) < nSize - 1 ) 105 nCurPosition = uintt( intt(nSize) - 1 + i_nDistance ); 106 break; 107 } 108 return position(); 109 } 110 111 uintt 112 mbstream::inq_position() const 113 { 114 return nCurPosition; 115 } 116 117 118 } // namespace csv 119 120