/*
 * Copyright (C) 2005 Luca Veltri - University of Parma - Italy
 * Copyright (C) 2009 The Sipdroid Open Source Project
 * 
 * This file is part of MjSip (http://www.mjsip.org)
 * 
 * MjSip 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.
 * 
 * MjSip 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 MjSip; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * 
 * Author(s):
 * Luca Veltri (luca.veltri@unipr.it)
 */

package org.zoolu.sip.message;

/**
 * Class BaseSipMethods collects all SIP method names.
 */
public abstract class BaseSipMethods {
	/** String "INVITE" */
	public static final String INVITE = "INVITE";

	/** Whether <i>str</i> is INVITE */
	public static boolean isInvite(String str) {
		return same(str, INVITE);
	}

	/** String "ACK" */
	public static final String ACK = "ACK";

	/** Whether <i>str</i> is ACK */
	public static boolean isAck(String str) {
		return same(str, ACK);
	}

	/** String "CANCEL" */
	public static final String CANCEL = "CANCEL";

	/** Whether <i>str</i> is CANCEL */
	public static boolean isCancel(String str) {
		return same(str, CANCEL);
	}

	/** String "BYE" */
	public static final String BYE = "BYE";

	/** Whether <i>str</i> is BYE */
	public static boolean isBye(String str) {
		return same(str, BYE);
	}

	/** String "INFO" */
	public static final String INFO = "INFO";

	/** Whether <i>str</i> is INFO */
	public static boolean isInfo(String str) {
		return same(str, INFO);
	}

	/** String "OPTION" */
	public static final String OPTION = "OPTION";

	/** Whether <i>str</i> is OPTION */
	public static boolean isOption(String str) {
		return same(str, OPTION);
	}
	
	/** String "OPTION" */
	public static final String OPTIONS = "OPTIONS";
	
	/** Whether str is OPTIONS */
	public static boolean isOptions(String str) {
		return same(str, OPTIONS);
	}

	/** String "REGISTER" */
	public static final String REGISTER = "REGISTER";

	/** Whether <i>str</i> is REGISTER */
	public static boolean isRegister(String str) {
		return same(str, REGISTER);
	}

	/** String "UPDATE" */
	public static final String UPDATE = "UPDATE";

	/** Whether <i>str</i> is UPDATE */
	public static boolean isUpdate(String str) {
		return same(str, UPDATE);
	}

	/** Whether <i>s1</i> and <i>s2</i> are case-unsensitive-equal. */
	protected static boolean same(String s1, String s2) { // return
		// s1.compareToIgnoreCase(s2)==0;
		return s1.equalsIgnoreCase(s2);
	}

	/** Array of standard methods */
	public static final String[] methods = { INVITE, ACK, CANCEL, BYE, INFO,
			OPTION, REGISTER, UPDATE };

	/** Array of standards methods that creates a dialog */
	public static final String[] dialog_methods = { INVITE };
}
