00001 // PPTMarkFinder.cc 00002 00003 // This file is part of bes, A C++ back-end server implementation framework 00004 // for the OPeNDAP Data Access Protocol. 00005 00006 // Copyright (c) 2004,2005 University Corporation for Atmospheric Research 00007 // Author: Patrick West <pwest@ucar.edu> and Jose Garcia <jgarcia@ucar.edu> 00008 // 00009 // This library is free software; you can redistribute it and/or 00010 // modify it under the terms of the GNU Lesser General Public 00011 // License as published by the Free Software Foundation; either 00012 // version 2.1 of the License, or (at your option) any later version. 00013 // 00014 // This library is distributed in the hope that it will be useful, 00015 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00016 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00017 // Lesser General Public License for more details. 00018 // 00019 // You should have received a copy of the GNU Lesser General Public 00020 // License along with this library; if not, write to the Free Software 00021 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00022 // 00023 // You can contact University Corporation for Atmospheric Research at 00024 // 3080 Center Green Drive, Boulder, CO 80301 00025 00026 // (c) COPYRIGHT University Corporation for Atmospheric Research 2004-2005 00027 // Please read the full copyright statement in the file COPYRIGHT_UCAR. 00028 // 00029 // Authors: 00030 // pwest Patrick West <pwest@ucar.edu> 00031 // jgarcia Jose Garcia <jgarcia@ucar.edu> 00032 00033 #include "PPTMarkFinder.h" 00034 #include "PPTException.h" 00035 00036 PPTMarkFinder::PPTMarkFinder( unsigned char *mark, int markLength ) 00037 : _markIndex( 0 ), 00038 _markLength( markLength ) 00039 { 00040 // Lets get sure we will not overrun the buffer 00041 if (markLength > PPTMarkFinder_Buffer_Size) 00042 throw PPTException( "mark given will overrun internal buffer.", 00043 __FILE__, __LINE__ ) ; 00044 memcpy((void*) _mark, (void*) mark, (markLength * sizeof(unsigned char)) ); 00045 } 00046 00047 bool 00048 PPTMarkFinder::markCheck( unsigned char b ) 00049 { 00050 if( _mark[_markIndex] == b ) 00051 { 00052 _markIndex++; 00053 if( _markIndex == _markLength ) 00054 { 00055 _markIndex = 0; 00056 return true ; 00057 } 00058 } 00059 else 00060 { 00061 _markIndex = 0 ; 00062 } 00063 00064 return false ; 00065 } 00066