/* ------------------------------------------------------------------------- * conf.cpp - logging defs * Copyright (C) 2008 Dimitar Atanasov <datanasov@deisytechbg.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA * ------------------------------------------------------------------------- */#include "conf.h"using std::string;ConfigFile::ConfigFile( string filename, string delimiter,                        string comment, string sentry )	: myDelimiter(delimiter), myComment(comment), mySentry(sentry){	// Construct a ConfigFile, getting keys and values from given file		std::ifstream in( filename.c_str() );		if( !in ) throw file_not_found( filename ); 		in >> (*this);}ConfigFile::ConfigFile()	: myDelimiter( string(1,'=') ), myComment( string(1,'#') ){	// Construct a ConfigFile without a file; empty}void ConfigFile::remove( const string& key ){	// Remove key and its value	myContents.erase( myContents.find( key ) );	return;}bool ConfigFile::keyExists( const string& key ) const{	// Indicate whether key is found	mapci p = myContents.find( key );	return ( p != myContents.end() );}/* static */void ConfigFile::trim( string& s ){	// Remove leading and trailing whitespace	static const char whitespace[] = " \n\t\v\r\f";	s.erase( 0, s.find_first_not_of(whitespace) );	s.erase( s.find_last_not_of(whitespace) + 1U );}std::ostream& operator<<( std::ostream& os, const ConfigFile& cf ){	// Save a ConfigFile to os	for( ConfigFile::mapci p = cf.myContents.begin();	     p != cf.myContents.end();		 ++p )	{		os << p->first << " " << cf.myDelimiter << " ";		os << p->second << std::endl;	}	return os;}std::istream& operator>>( std::istream& is, ConfigFile& cf ){	// Load a ConfigFile from is	// Read in keys and values, keeping internal whitespace	typedef string::size_type pos;	const string& delim  = cf.myDelimiter;  // separator	const string& comm   = cf.myComment;    // comment	const string& sentry = cf.mySentry;     // end of file sentry	const pos skip = delim.length();        // length of separator		string nextline = "";  // might need to read ahead to see where value ends		while( is || nextline.length() > 0 )	{		// Read an entire line at a time		string line;		if( nextline.length() > 0 )		{			line = nextline;  // we read ahead; use it now			nextline = "";		}		else		{			std::getline( is, line );		}				// Ignore comments		line = line.substr( 0, line.find(comm) );				// Check for end of file sentry		if( sentry != "" && line.find(sentry) != string::npos ) return is;				// Parse the line if it contains a delimiter		pos delimPos = line.find( delim );		if( delimPos < string::npos )		{			// Extract the key			string key = line.substr( 0, delimPos );			line.replace( 0, delimPos+skip, "" );						// See if value continues on the next line			// Stop at blank line, next line with a key, end of stream,			// or end of file sentry			bool terminate = false;			while( !terminate && is )			{				std::getline( is, nextline );				terminate = true;								string nlcopy = nextline;				ConfigFile::trim(nlcopy);				if( nlcopy == "" ) continue;								nextline = nextline.substr( 0, nextline.find(comm) );				if( nextline.find(delim) != string::npos )					continue;				if( sentry != "" && nextline.find(sentry) != string::npos )					continue;								nlcopy = nextline;				ConfigFile::trim(nlcopy);				if( nlcopy != "" ) line += "\n";				line += nextline;				terminate = false;			}						// Store key and value			ConfigFile::trim(key);			ConfigFile::trim(line);			cf.myContents[key] = line;  // overwrites if key is repeated		}	}		return is;}