DefaultControllerEnvironment.java

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package com.neuronrobotics.sdk.addons.gamepad;
 
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 * Copyright 2002 Sun Microsystems, Inc. All rights reserved.
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import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.lang.reflect.Method;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.Properties;
import java.util.StringTokenizer;
import java.util.logging.Logger;
 
import net.java.games.input.Controller;
import net.java.games.util.plugins.*;
 
class DefaultControllerEnvironment extends ControllerEnvironment {
    static String libPath;
    
    private static Logger log = Logger.getLogger(DefaultControllerEnvironment.class.getName());
    
    static void loadLibrary(final String lib_name) {
        AccessController.doPrivileged(
                new PrivilegedAction() {
                    public final Object run() {
                        String lib_path = System.getProperty("net.java.games.input.librarypath");
                        if (lib_path != null)
                            System.load(lib_path + File.separator + System.mapLibraryName(lib_name));
                        else
                            System.loadLibrary(lib_name);
                        return null;
                    }
                });
    }
    
    static String getPrivilegedProperty(final String property) {
           return (String)AccessController.doPrivileged(new PrivilegedAction() {
                    public Object run() {
                        return System.getProperty(property);
                    }
                });
        }
        
 
    static String getPrivilegedProperty(final String property, final String default_value) {
       return (String)AccessController.doPrivileged(new PrivilegedAction() {
                public Object run() {
                    return System.getProperty(property, default_value);
                }
            });
    }
        
    private ArrayList controllers;
    
    private Collection loadedPlugins = new ArrayList();
 
    public DefaultControllerEnvironment() {
    }
    
    public Controller[] getControllers() {
        loadedPlugins.clear();
            // Controller list has not been scanned.
            controllers = new ArrayList();
            AccessController.doPrivileged(new PrivilegedAction() {
                public Object run() {
                    scanControllers();
                    return null;
                }
            });
            //Check the properties for specified controller classes
            String pluginClasses = getPrivilegedProperty("jinput.plugins", "") + " " + getPrivilegedProperty("net.java.games.input.plugins", "");
            if(!getPrivilegedProperty("jinput.useDefaultPlugin", "true").toLowerCase().trim().equals("false") && !getPrivilegedProperty("net.java.games.input.useDefaultPlugin", "true").toLowerCase().trim().equals("false")) {
                String osName = getPrivilegedProperty("os.name", "").trim();
                if(osName.equals("Linux")) {
                    pluginClasses = pluginClasses + " net.java.games.input.LinuxEnvironmentPlugin";
                } else if(osName.equals("Mac OS X")) {
                    pluginClasses = pluginClasses + " net.java.games.input.OSXEnvironmentPlugin";
                } else  if(osName.equals("Windows XP") || osName.equals("Windows Vista") || osName.equals("Windows 7") || osName.equals("Windows 8") || osName.equals("Windows 8.1") || osName.equals("Windows 10")) {
                    pluginClasses = pluginClasses + " net.java.games.input.DirectAndRawInputEnvironmentPlugin";
                } else if(osName.equals("Windows 98") || osName.equals("Windows 2000")) {
                    pluginClasses = pluginClasses + " net.java.games.input.DirectInputEnvironmentPlugin";
                } else if (osName.startsWith("Windows")) {
                    log.warning("Found unknown Windows version: " + osName);
                    log.warning("Attempting to use default windows plug-in.");
                    pluginClasses = pluginClasses + " net.java.games.input.DirectAndRawInputEnvironmentPlugin";
                } else {
                    log.warning("Trying to use default plugin, OS name " + osName +" not recognised");
                }
            }
 
            StringTokenizer pluginClassTok = new StringTokenizer(pluginClasses, " \t\n\r\f,;:");
            while(pluginClassTok.hasMoreTokens()) {
                String className = pluginClassTok.nextToken();                  
                try {
                    if(!loadedPlugins.contains(className)) {
                        log.fine("Loading: " + className);
                        libfix();
                        Class ceClass = Class.forName(className);                       
                        net.java.games.input.ControllerEnvironment ce = (net.java.games.input.ControllerEnvironment) ceClass.newInstance();
                        if(ce.isSupported()) {
                            addControllers(ce.getControllers());
                            loadedPlugins.add(ce.getClass().getName());
                        } else {
                            logln(ceClass.getName() + " is not supported");
                        }
                    }
                } catch (Throwable e) {
                    e.printStackTrace();
                }
            }
        
        Controller[] ret = new Controller[controllers.size()];
        Iterator it = controllers.iterator();
        int i = 0;
        while (it.hasNext()) {
            ret[i] = (Controller)it.next();
            i++;
        }
        return ret;
    }
    
    /* This is jeff's new plugin code using Jeff's Plugin manager */
    private void scanControllers() {
        String pluginPathName = getPrivilegedProperty("jinput.controllerPluginPath");
        if(pluginPathName == null) {
            pluginPathName = "controller";
        }
        
        scanControllersAt(getPrivilegedProperty("java.home") +
            File.separator + "lib"+File.separator + pluginPathName);
        scanControllersAt(getPrivilegedProperty("user.dir")+
            File.separator + pluginPathName);
    }
    
    private void scanControllersAt(String path) {
        File file = new File(path);
        if (!file.exists()) {
            return;
        }
        try {
            Plugins plugins = new Plugins(file);
            Class[] envClasses = plugins.getExtends(ControllerEnvironment.class);
            for(int i=0;i<envClasses.length;i++){
                try {
                    ControllerEnvironment.logln("ControllerEnvironment "+
                            envClasses[i].getName()
                            +" loaded by "+envClasses[i].getClassLoader());
                    ControllerEnvironment ce = (ControllerEnvironment)
                        envClasses[i].newInstance();
                    if(ce.isSupported()) {
                        addControllers(ce.getControllers());
                        loadedPlugins.add(ce.getClass().getName());
                    } else {
                        logln(envClasses[i].getName() + " is not supported");
                    }
                } catch (Throwable e) {
                    e.printStackTrace();
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
        
    private void addControllers(Controller[] c) {
        for (int i = 0; i < c.length; i++) {
            controllers.add(c[i]);
        }
    }
 
    public boolean isSupported() {
        return true;
    }
}