BESCmdParser.cc

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00001 // BESCmdParser.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 "BESCmdParser.h"
00034 #include "BESTokenizer.h"
00035 #include "BESCommand.h"
00036 #include "BESResponseHandler.h"
00037 #include "BESParserException.h"
00038 
00039 BESCmdParser::BESCmdParser( )
00040 {
00041 }
00042 
00043 BESCmdParser::~BESCmdParser()
00044 {
00045 }
00046 
00062 void
00063 BESCmdParser::parse( const string &request, BESDataHandlerInterface &dhi )
00064 {
00065     BESTokenizer t ;
00066     t.tokenize( request.c_str() ) ;
00067     string my_token = t.get_first_token() ;
00068     BESCommand *cmd = BESCommand::find_command( my_token ) ;
00069     if( cmd )
00070     {
00071         dhi.response_handler = cmd->parse_request( t, dhi ) ;
00072         if( !dhi.response_handler )
00073         {
00074             throw BESParserException( (string)"Unable to build command",
00075                                       __FILE__, __LINE__ ) ;
00076         }
00077     }
00078     else
00079     {
00080         throw BESParserException( (string)"Invalid command " + my_token ,
00081                                   __FILE__, __LINE__ ) ;
00082     }
00083 }
00084 

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