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