/*
 * Copyright  1990-2007 Sun Microsystems, Inc. All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version
 * 2 only, as published by the Free Software Foundation.
 * 
 * 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 version 2 for more details (a copy is
 * included at /legal/license.txt).
 * 
 * You should have received a copy of the GNU General Public License
 * version 2 along with this work; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 * 
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
 * Clara, CA 95054 or visit www.sun.com if you need additional
 * information or have any questions.
 */

package com.sun.midp.main;

import java.io.File;

/**
 * Initialize the CDC environment for MIDlet execution.
 */
public class CDCInit {
    /**
     * Performs CDC API initialization.
     *
     * @param midpHome root directory of the MIDP working files
     * @param nativeLib name of the native shared library, only applies to
     * non-rommized build
     */
    public static void init(String midpHome, String nativeLib) {
        try {
            if (nativeLib != null) {
                System.loadLibrary(nativeLib);
            }
        } catch (UnsatisfiedLinkError err) {
            /*
             * Since there is currenly no to determine if the build rommized
             * the MIDP native methods or not, it is customary to pass in a
             * default library name even if there is no library to load,
             * which will cause this exception, so the exception has to be
             * ignored here. If this is a non-rommized build and library is
             * not found, the first native method call below will throw an
             * error.
             */
        }

        /*
         * In case the normal system properites configration did not set
         * the profile set it here.
         */
        String profile = System.getProperty("microedition.profiles");
	if (profile == null) {
            System.setProperty("microedition.profiles", "MIDP-2.1");
        }

        initMidpNativeStates(midpHome);
    }

    /** Performs CDC API initialization. */
    public static void init() {
	/*
         * Path to MIDP working directory. 
         * Default is the property "sun.midp.home.path",
         * the fallback is user.dir.
         */
        String userdir = System.getProperty("user.dir", ".");
        userdir+= File.separator + "midp" + File.separator + "midp_fb";
        String home = System.getProperty("sun.midp.home.path", userdir);
        String lib = System.getProperty("sun.midp.library.name", "midp");

        init(home, lib);
    }

    /**
     * Performs native subsystem initialization.
     * @param home path to the MIDP working directory.
     */
    static native void initMidpNativeStates(String home);
}