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/*
* begin.cxx
*
* Copyright 2011 Micke Nordin <mik@elnord.in>
*
* 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., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
#include <iostream>
#include <string>
#include <boost/xpressive/xpressive.hpp>
#include <fstream>
using namespace std;
int begin(string needle, istream &in)
{
string input; //This is where we keep our input, line by line
boost::xpressive::sregex regex = boost::xpressive::sregex::compile( needle, boost::xpressive::regex_constants::icase ); //this is what we search for
if( !in.good() ) { //Check if steam is ok
cerr << "Could not open file \n";
return 1; //if not return 1
} else { //go ahead
while(in) { //loop through input line by line
getline(in, input);
if ( boost::xpressive::regex_search(input, regex) ) { //if we find a match
cout << input << endl; //start printing to std out
while(in) { //and print what remains as well
getline(in,input);
cout << input << endl;
} //end of inner while
} //end of if
} //end of outer while
} //end of else
return 0;
}