/*
 * Moonlight|3D Copyright (C) 2005 The Moonlight|3D team
 * 
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 * 
 * This library 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 Lesser General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 * 
 * Created on Mar 14, 2007
 */
package ml.core.helper;

import java.util.ArrayList;
import java.util.List;
import java.util.regex.Pattern;

/**
 * This represents the information associated with a file type
 * that is displayed in a dialog to open and save files.
 *
 * @author gregor
 */
public class FileType {
	private final String name;
	private final List<String> patterns;
	
	public FileType(String name, ArrayList<String> patterns) {
		this.name=name;
		this.patterns=(List<String>) patterns.clone();
	}
	
	/**
	 * @return a short, descriptive of the file format for display in the file dialog
	 */
	public String getName() {
		return name;
	}
	
	/**
	 * @return a list of patterns (e.g. *.jpg for JPEGs) that the file names of files of this type usually obey.
	 */
	public List<String> getPatterns() {
		return patterns;
	}
	
	/**
	 * This function checks if the given file name matches any of the patterns
	 * listed for this file type.
	 * 
	 * @param filename the filename to check
	 * @return true if the file matches, otherwise false
	 */
	public boolean matches(String filename) {
		for(String pattern : patterns) {
			String regex="";
			for(int i=0;i<pattern.length();i++) {
				// process the file pattern to become a true regex
				if(pattern.charAt(i)=='*') {
					regex+=".*?";
				} else {
					regex+=pattern.charAt(i);
				}	
			}

			// check if regexp matches filename
			if(Pattern.matches(regex, filename)) {
				return true;
			}
		}
		return false;
	}
}