/**
 * GNU LibreJS - A browser add-on to block nonfree nontrivial JavaScript.
 * *
 * Copyright (C) 2011, 2012 Loic J. Duros
 *
 * 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 3 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, see  <http://www.gnu.org/licenses/>.
 *
 */

exports.patternUtils = {
    /**
     * removeNonalpha
     *
     * Remove all nonalphanumeric values, except for
     * < and >, since they are what we use for tokens.
     *
     */
    removeNonalpha: function (str) {
	var regex = /[^a-z0-9<>@]+/gi;
	return str.replace(regex, '');
    },
    removeWhitespace: function (str) {
	return str.replace(/[ \t\r\n]+/gmi,"");
    },
    replaceTokens: function (str) {
	var regex = /<.*?>/gi;
	return str.replace(regex, '.*?');
    }
};