Activator.java

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package jp.go.aist.hrp.joystick;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URL;

import org.eclipse.core.runtime.FileLocator;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.osgi.framework.BundleContext;


public class Activator extends AbstractUIPlugin {
    // The plug-in ID
        public static final String PLUGIN_ID = "JoystickPlugin";

        // The shared instance
        private static Activator plugin;

    private static final String  LINUX_HOME_DIR   = System.getenv("HOME") + File.separator ;
    private static final String  WIN_HOME_DIR     = System.getenv("APPDATA") + File.separator;
    private static final String  LINUX_TMP_DIR   = LINUX_HOME_DIR + ".Joystick_aist" + File.separator;
    private static final String  WIN_TMP_DIR     = WIN_HOME_DIR + "Joystick_aist" + File.separator;
    private static final File TMP_DIR = initTempDir();
    
        public Activator() {
                plugin = this;
        }

        /*
         * (non-Javadoc)
         * @see org.eclipse.ui.plugin.AbstractUIPlugin#start(org.osgi.framework.BundleContext)
         */
        public void start(BundleContext context) throws Exception {
                super.start(context);
        }

        /*
         * (non-Javadoc)
         * @see org.eclipse.ui.plugin.AbstractUIPlugin#stop(org.osgi.framework.BundleContext)
         */
        public void stop(BundleContext context) throws Exception {
                plugin = null;
                super.stop(context);
        }
        
    public static String getPath() {
        URL entry = getDefault().getBundle().getEntry("/");
        String pluginDirectory = "";
        try {
            pluginDirectory = FileLocator.resolve(entry).getPath();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return pluginDirectory;
    }
    
    public File getTempDir(){
        return TMP_DIR;
    }

        public static Activator getDefault() {
                return plugin;
        }

        
    public static void resourceToFile(Class<jp.go.aist.hrp.joystick.Activator> pluginManager, String srcName, File destFile)
    throws IOException {
        InputStream in = pluginManager.getResourceAsStream(srcName.toString());
        OutputStream out = new FileOutputStream(destFile.toString());
        try {
            byte[] buf = new byte[1024];
            int len;
            while ((len = in.read(buf)) > 0) {
                out.write(buf, 0, len);
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            in.close();
            out.close();
        }
    }
        
    private static File createConfigFile() {
        File rtcFile = new File( Activator.getDefault().getTempDir(),"rtc.conf");
        if (!rtcFile.exists()){
                try{
                        resourceToFile(Activator.class, "/default_rtc.conf", rtcFile);
                }catch (IOException ex){
                        ex.printStackTrace();
                }
        }
        return rtcFile;
    }
        
        public static String getConfigFilePath(){
                String confPath=""; //$NON-NLS-1$
        File defualtRtcFile = new File(Activator.getDefault().getTempDir() + File.separator + "rtc.conf");
        if( defualtRtcFile.isFile() ){
            confPath = defualtRtcFile.getPath(); 
        } else {
                confPath = createConfigFile().getPath();
        }
        System.out.println("[Joystick] default Config File path="+confPath); //$NON-NLS-1$
                return confPath;
        }

        public static ImageDescriptor getImageDescriptor(String path) {
                return imageDescriptorFromPlugin(PLUGIN_ID, path);
        }
        
    
        static private File initTempDir() {
        File ret = null;
        
        if ( System.getProperty("os.name").equals("Linux") ||
             System.getProperty("os.name").equals("Mac OS X")) {
            ret = new File(LINUX_TMP_DIR);
        } else { //Windows と　仮定
            ret = new File(WIN_TMP_DIR);
        }
        if( !ret.exists() ){
            ret.mkdirs();
        }
        
        return ret;
    }

}