/* * This file is part of "The Java Telnet Application". * * This 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, or (at your option) * any later version. * * "The Java Telnet Application" 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 software; see the file COPYING.  If not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */package de.mud.jta;import de.mud.jta.PluginLoader;import de.mud.jta.VisualPlugin;import de.mud.jta.Plugin;import de.mud.jta.event.ConfigurationRequest;import de.mud.jta.event.SocketRequest;import java.util.Properties;import java.util.Hashtable;import java.util.Vector;import java.util.Enumeration;import java.awt.Component;import java.awt.Menu;/** * The common part of the <B>The Java<SUP>tm</SUP> Telnet Application</B> * is handled here. Mainly this includes the loading of the plugins and * the screen setup of the visual plugins. * <P> * <B>Maintainer:</B> Matthias L. Jugel * * @version $Id: Common.java,v 2.11 2001/03/06 12:05:22 leo Exp $ * @author Matthias L. Jugel, Marcus Mei遪er */public class Common extends PluginLoader {  private Hashtable plugins, components, menus;  public final static String DEFAULT_PATH = "de.mud.jta.plugin";  public Common(Properties config) {    // configure the plugin path    super(getPluginPath(config.getProperty("pluginPath")));    System.out.println("** The Java(tm) Telnet Application");    System.out.println("** Version 2.0 for Java 1.1.x and Java 2");    System.out.println("** Copyright (c) 1996-2000 Matthias L. Jugel, "                      +"Marcus Meissner");    System.out.println("** Chinese Version 1.0 for Java 1.3.1, Jutso Hung");    try {      Version build =        (Version)Class.forName("de.mud.jta.Build").newInstance();      System.out.println("** Build: "+build.getDate());    } catch(Exception e) {      System.out.println("** Build: patched or selfmade, no date");      System.err.println(e);    }    plugins = new Hashtable();    components = new Hashtable();    menus = new Hashtable();    Vector names = split(config.getProperty("plugins"), ',');    if(names == null) {      System.err.println("jta: no plugins found! aborting ...");      return;    }    Enumeration e = names.elements();    while(e.hasMoreElements()) {      String name = (String)e.nextElement();      String id = null; int idx;      if((idx = name.indexOf("(")) > 1) {        if(name.indexOf(")", idx) > idx)          id = name.substring(idx + 1, name.indexOf(")", idx));        else          System.err.println("jta: missing ')' for plugin '"+name+"'");        name = name.substring(0, idx);      }      System.out.println("jta: loading plugin '"+name+"'"                        +(id != null && id.length() > 0 ?                            ", ID: '"+id+"'" : ""));      Plugin plugin = addPlugin(name, id);      if(plugin == null) {        System.err.println("jta: ignoring plugin '"+name+"'"                          +(id != null && id.length() > 0 ?                              ", ID: '"+id+"'" : ""));        continue;      }      plugins.put(name, plugin);      if(plugin instanceof VisualPlugin) {        Component c = ((VisualPlugin)plugin).getPluginVisual();        if(c != null) components.put(name+(id != null ? "("+id+")" : ""), c);        Menu menu = ((VisualPlugin)plugin).getPluginMenu();        if(menu != null) menus.put(name+(id != null ? "("+id+")" : ""), menu);      }    }    broadcast(new ConfigurationRequest(new PluginConfig(config)));  }  public Hashtable getPlugins() {    return plugins;  }  public Hashtable getComponents() {    return components;  }  public Hashtable getMenus() {    return menus;  }  /**   * Convert the plugin path from a separated string list to a Vector.   * @param path the string path   * @return a vector containing the path   */  private static Vector getPluginPath(String path) {    if(path == null)      path = DEFAULT_PATH;    // I am not sure that this is desirable, as the applet administrator    // might use UNIX and thus ':' but the applet user might have a Windows    // system and thus uses ';' and thus the whole thing will collapse.    // String separator = System.getProperty("path.separator");    // if(separator == null)    //  separator = ":";    return split(path, ':');  }  /**   * Split up comma separated lists of strings. This is quite strict, no   * whitespace characters are allowed.   * @param s the string to be split up   * @return an array of strings   */  public static Vector split(String s, char separator) {    if(s == null) return null;    Vector v = new Vector();    int old = -1, idx = s.indexOf(separator);    while(idx >= 0) {      v.addElement(s.substring(old + 1, idx));      old = idx;      idx = s.indexOf(separator, old + 1);    }    v.addElement(s.substring(old + 1));    return v;  }}