/*****************************************************/
/*          This java file is a part of the          */
/*                                                   */
/*           -  Plouf's Java IRC Client  -           */
/*                                                   */
/*   Copyright (C)  2002 - 2004 Philippe Detournay   */
/*                                                   */
/*         All contacts : theplouf@yahoo.com         */
/*                                                   */
/*  PJIRC 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; version 2 or later of  */
/*  the License.                                     */
/*                                                   */
/*  PJIRC 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 PJIRC; if      */
/*  not, write to the Free Software Foundation,      */
/*  Inc., 59 Temple Place, Suite 330, Boston,        */
/*  MA  02111-1307  USA                              */
/*                                                   */
/*****************************************************/

package irc;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Hashtable;

/**
 * Parameter provider from a text stream.
 */
public class StreamParameterProvider implements ParameterProvider {
	private Hashtable _table;

	/**
	 * Create a new StreamParameterProvider loading the given input stream.
	 * 
	 * @param is
	 *          the input stream to load from. If is is null, then the parameter
	 *          list will be empty.
	 */
	public StreamParameterProvider(InputStream is) {
		_table = new Hashtable();
		if (is == null)
			return;

		try {
			BufferedReader reader = new BufferedReader(new InputStreamReader(is));
			String line = reader.readLine();
			while (line != null) {
				line = line.trim();
				if (line.length() > 0) {
					if (line.charAt(0) != '#') {
						parse(line);
					}
				}
				line = reader.readLine();
			}
			reader.close();
		} catch (Exception ex) {
			ex.printStackTrace();
		}
	}

	private void parse(String str) {
		int pos = str.indexOf('=');
		if (pos < 0)
			return;
		String before = str.substring(0, pos).trim().toLowerCase(java.util.Locale.ENGLISH);
		String after = str.substring(pos + 1).trim();
		_table.put(before, after);
	}

	@Override
	public String getParameter(String name) {
		return (String) _table.get(name.toLowerCase(java.util.Locale.ENGLISH));
	}
}