include/EvtGenBase/EvtParserXml.hh

0001
0002 /***********************************************************************
0003 * Copyright 1998-2020 CERN for the benefit of the EvtGen authors       *
0004 *                                                                      *
0005 * This file is part of EvtGen.                                         *
0006 *                                                                      *
0007 * EvtGen is free software: you can redistribute it and/or modify       *
0008 * it under the terms of the GNU General Public License as published by *
0009 * the Free Software Foundation, either version 3 of the License, or    *
0010 * (at your option) any later version.                                  *
0011 *                                                                      *
0012 * EvtGen is distributed in the hope that it will be useful,            *
0013 * but WITHOUT ANY WARRANTY; without even the implied warranty of       *
0014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the        *
0015 * GNU General Public License for more details.                         *
0016 *                                                                      *
0017 * You should have received a copy of the GNU General Public License    *
0018 * along with EvtGen.  If not, see <https://www.gnu.org/licenses/>.     *
0019 ***********************************************************************/
0020
0021 #ifndef EVTPARSERXML_HH
0022 #define EVTPARSERXML_HH
0023
0024 #include <fstream>
0025 #include <string>
0026 #include <vector>
0027
0028 class EvtParserXml final {
0029   public:
0030     bool open( std::string filename );
0031     bool close();
0032
0033     bool readNextTag();
0034
0035     std::string getTagTitle() { return _tagTitle; }
0036     std::string getParentTagTitle();
0037     int getLineNumber() { return _lineNo; }
0038     bool isTagInline() { return _inLineTag; }
0039
0040     std::string readAttribute( std::string attribute,
0041                                std::string defaultValue = "" );
0042     bool readAttributeBool( std::string attribute, bool defaultValue = false );
0043     int readAttributeInt( std::string attribute, int defaultValue = -1 );
0044     double readAttributeDouble( std::string attribute, double defaultValue = -1. );
0045
0046   private:
0047     std::ifstream _fin;
0048     std::string _line;
0049     int _lineNo = 0;
0050
0051     std::string _tag;
0052     std::string _tagTitle;
0053     bool _inLineTag;
0054     std::vector<std::string> _tagTree;
0055
0056     bool processTagTree();
0057
0058     bool expandEnvVars( std::string& str );
0059     bool isAlphaNum( char c );
0060 };
0061
0062 #endif