117 lines
2.7 KiB
C++
117 lines
2.7 KiB
C++
/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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*/
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/*
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* This is a standalone .ini parser, written to replace boost property
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* tree in the mouse_m908 project. It is not intended to be a general
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* purpose replacement.
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*
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*/
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#include <iostream>
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#include <fstream>
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#include <regex>
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#include <string>
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#include <map>
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class simple_ini_parser{
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private:
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std::map< std::string, std::string > _ini_values;
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public:
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// read and parse ini file
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int read_ini( std::string path );
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// get values
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std::string get( std::string key, std::string default_value );
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// print all key-value pairs
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int print_all();
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};
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// read and parse ini file
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int simple_ini_parser::read_ini( std::string path ){
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// open file
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std::ifstream inifile;
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inifile.open( path );
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if( !inifile.is_open() )
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return 1;
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// go through each line
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std::string line, current_section = "";
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while( std::getline( inifile, line ) ){
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// empty line ?
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if( line.length() == 0 )
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continue;
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// comment ?
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if( line[0] == ';' || line[0] == '#' )
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continue;
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// remove whitespace
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line = std::regex_replace( line, std::regex("[[:space:]]"), "" );
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// section header?
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if( std::regex_match( line, std::regex("\\[[[:print:]]+\\]") ) ){
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current_section = std::regex_replace( line, std::regex("[\\[\\]]"), "" ) + ".";
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continue;
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}
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// key=value ?
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if( std::regex_match( line, std::regex("[[:print:]]+=[[:print:]]+") ) ){
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_ini_values.emplace( current_section + std::regex_replace( line, std::regex("=[[:print:]]+"), "" ),
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std::regex_replace( line, std::regex("[[:print:]]+="), "" ) );
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}
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}
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// close file
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inifile.close();
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return 0;
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}
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// get values
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std::string simple_ini_parser::get( std::string key, std::string default_value ){
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// check if key exists
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if( _ini_values.find( key ) != _ini_values.end() ){
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return _ini_values.at( key );
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} else{
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return default_value;
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}
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}
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// print all key-value pairs
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int simple_ini_parser::print_all(){
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for( auto i : _ini_values ){
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std::cout << i.first << "=" << i.second << "\n";
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}
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return 0;
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}
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