/*
 *  Baltisot
 *  Copyright (C) 1999-2003 Nicolas "Pixel" Noble
 *
 *  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
 */

/* $Id: Regex.cc,v 1.12 2004-12-18 13:15:26 pixel Exp $ */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "BRegex.h"
#include "gettext.h"

char t[1024];

Regex empty("^$"), any(".*");

Regex::Regex(const String & regex, int acflags, int aeflags) throw (GeneralException) : cflags(acflags), eflags(aeflags), pattern(regex.strdup()) {
    int r;
    
    if ((r = regcomp(&preg, pattern, cflags | REG_NOSUB))) {
	std::cerr << _("Error in regcomp:");
	regerror(r, &preg, t, sizeof(t));
	std::cerr << t << std::endl;
	throw GeneralException(String(_("Regex \"")) + regex + _("\" failed to compile: ") + t + "\n");
    }
}

Regex::Regex(const Regex & regex) : pattern(Base::strdup(pattern)) {
    int r;
    
    if ((r = regcomp(&preg, pattern, cflags | REG_NOSUB))) {
	printm(M_ERROR, _("Error in regcomp:"));
	regerror(r, &preg, t, sizeof(t));
	printm(M_ERROR, "%s\n", t);
	throw GeneralException(String(_("Regex \"")) + pattern + _("\" failed to compile: ") + t + "\n");
    }
}

Regex::~Regex() {
    regfree(&preg);
    free(pattern);
}

bool Regex::Match(const String & s) const {
    if (regexec(&preg, s.to_charp(), 0, 0, eflags)) {
	return false;
    } else {
	return true;
    }
}