platformmanagerimpl.java

这是一个基于java编写的torrent的P2P源码

    // Public utility methods not shared across the interface

    /**
     * Plays the system alert (the jingle is specified by the user in System Preferences)
     */
    public void playSystemAlert()
    {
        try
        {
            performRuntimeExec(new String[]{"beep"});
        }
        catch (IOException e)
        {
        	if (Logger.isEnabled())
        		Logger.log(new LogEvent(LOGID, LogEvent.LT_WARNING,
						"Cannot play system alert"));
        	Logger.log(new LogEvent(LOGID, "", e));
        }
    }

    /**
     * <p>Shows the given file or directory in Finder</p>
     * @param path Absolute path to the file or directory
     */
    public void showInFinder(File path)
    {
        boolean useOSA = !NativeInvocationBridge.sharedInstance().isEnabled() || !NativeInvocationBridge.sharedInstance().showInFinder(path);

        if(useOSA)
        {
            StringBuffer sb = new StringBuffer();
            sb.append("tell application \"");
            sb.append(getFileBrowserName());
            sb.append("\" to reveal (posix file \"");
            sb.append(path);
            sb.append("\" as alias)");

            try
            {
                performOSAScript(sb);
            }
            catch (IOException e)
            {
                Logger.log(new LogAlert(LogAlert.UNREPEATABLE, LogAlert.AT_ERROR, e
						.getMessage()));
            }
        }
    }

    /**
     * <p>Shows the given file or directory in Terminal by executing cd /absolute/path/to</p>
     * @param path Absolute path to the file or directory
     */
    public void showInTerminal(String path)
    {
        showInTerminal(new File(path));
    }

    /**
     * <p>Shows the given file or directory in Terminal by executing cd /absolute/path/to</p>
     * @param path Absolute path to the file or directory
     */
    public void showInTerminal(File path)
    {
        if (path.isFile())
        {
            path = path.getParentFile();
        }

        if (path != null && path.isDirectory())
        {
            StringBuffer sb = new StringBuffer();
            sb.append("tell application \"");
            sb.append("Terminal");
            sb.append("\" to do script \"cd ");
            sb.append(path.getAbsolutePath().replaceAll(" ", "\\ "));
            sb.append("\"");

            try
            {
                performOSAScript(sb);
            }
            catch (IOException e)
            {
                Logger.log(new LogAlert(LogAlert.UNREPEATABLE, LogAlert.AT_ERROR, e
						.getMessage()));
            }
        }
        else
        {
        	if (Logger.isEnabled())
        		Logger.log(new LogEvent(LOGID, LogEvent.LT_WARNING, "Cannot find "
        				+ path.getName()));
        }
    }

    // Internal utility methods

    /**
     * Compiles a new AppleScript instance and runs it
     * @param cmd AppleScript command to execute; do not surround command with extra quotation marks
     * @return Output of the script
     * @throws IOException If the script failed to execute
     */
    protected static String performOSAScript(CharSequence cmd) throws IOException
    {
        return performOSAScript(new CharSequence[]{cmd});
    }

    /**
     * Compiles a new AppleScript instance and runs it
     * @param cmds AppleScript Sequence of commands to execute; do not surround command with extra quotation marks
     * @return Output of the script
     * @throws IOException If the script failed to execute
     */
    protected static String performOSAScript(CharSequence[] cmds) throws IOException
    {
        long start = System.currentTimeMillis();
        Debug.outNoStack("Executing OSAScript: ");
        for (int i = 0; i < cmds.length; i++)
        {
            Debug.outNoStack("\t" + cmds[i]);
        }

        String[] cmdargs = new String[2 * cmds.length + 1];
        cmdargs[0] = "osascript";
        for (int i = 0; i < cmds.length; i++)
        {
            cmdargs[i * 2 + 1] = "-e";
            cmdargs[i * 2 + 2] = String.valueOf(cmds[i]);
        }

        Process osaProcess = performRuntimeExec(cmdargs);
        BufferedReader reader = new BufferedReader(new InputStreamReader(osaProcess.getInputStream()));
        String line = reader.readLine();
        reader.close();
        Debug.outNoStack("OSAScript Output: " + line);

        reader = new BufferedReader(new InputStreamReader(osaProcess.getErrorStream()));
        String errorMsg = reader.readLine();
        reader.close();

        Debug.outNoStack("OSAScript Error (if any): " + errorMsg);

        Debug.outNoStack(MessageFormat.format("OSAScript execution ended ({0}ms)", new Object[]{String.valueOf(System.currentTimeMillis() - start)}));

        if (errorMsg != null)
        {
            throw new IOException(errorMsg);
        }

        return line;
    }

    /**
     * Compiles a new AppleScript instance and runs it
     * @param script AppleScript file (.scpt) to execute
     * @return Output of the script
     * @throws IOException If the script failed to execute
     */
    protected static String performOSAScript(File script) throws IOException
    {
        long start = System.currentTimeMillis();
        Debug.outNoStack("Executing OSAScript from file: " + script.getPath());

        Process osaProcess = performRuntimeExec(new String[]{"osascript", script.getPath()});
        BufferedReader reader = new BufferedReader(new InputStreamReader(osaProcess.getInputStream()));
        String line = reader.readLine();
        reader.close();
        Debug.outNoStack("OSAScript Output: " + line);

        reader = new BufferedReader(new InputStreamReader(osaProcess.getErrorStream()));
        String errorMsg = reader.readLine();
        reader.close();

        Debug.outNoStack("OSAScript Error (if any): " + errorMsg);

        Debug.outNoStack(MessageFormat.format("OSAScript execution ended ({0}ms)", new Object[]{String.valueOf(System.currentTimeMillis() - start)}));

        if (errorMsg != null)
        {
            throw new IOException(errorMsg);
        }

        return line;
    }

    /**
     * Compiles a new AppleScript instance to the specified location
     * @param cmd         Command to compile; do not surround command with extra quotation marks
     * @param destination Destination location of the AppleScript file
     * @return True if compiled successfully
     */
    protected static boolean compileOSAScript(CharSequence cmd, File destination)
    {
        return compileOSAScript(new CharSequence[]{cmd}, destination);
    }

    /**
     * Compiles a new AppleScript instance to the specified location
     * @param cmds Sequence of commands to compile; do not surround command with extra quotation marks
     * @param destination Destination location of the AppleScript file
     * @return True if compiled successfully
     */
    protected static boolean compileOSAScript(CharSequence[] cmds, File destination)
    {
        long start = System.currentTimeMillis();
        Debug.outNoStack("Compiling OSAScript: " + destination.getPath());
        for (int i = 0; i < cmds.length; i++)
        {
            Debug.outNoStack("\t" + cmds[i]);
        }

        String[] cmdargs = new String[2 * cmds.length + 3];
        cmdargs[0] = "osacompile";
        for (int i = 0; i < cmds.length; i++)
        {
            cmdargs[i * 2 + 1] = "-e";
            cmdargs[i * 2 + 2] = String.valueOf(cmds[i]);
        }

        cmdargs[cmdargs.length - 2] = "-o";
        cmdargs[cmdargs.length - 1] = destination.getPath();

        String errorMsg;
        try
        {
            Process osaProcess = performRuntimeExec(cmdargs);

            BufferedReader reader = new BufferedReader(new InputStreamReader(osaProcess.getErrorStream()));
            errorMsg = reader.readLine();
            reader.close();
        }
        catch (IOException e)
        {
            Debug.outNoStack("OSACompile Execution Failed: " + e.getMessage());
            Debug.printStackTrace(e);
            return false;
        }

        Debug.outNoStack("OSACompile Error (if any): " + errorMsg);

        Debug.outNoStack(MessageFormat.format("OSACompile execution ended ({0}ms)", new Object[]{String.valueOf(System.currentTimeMillis() - start)}));

        return (errorMsg == null);
    }

    /**
     * @see Runtime#exec(String[])
     */
    protected static Process performRuntimeExec(String[] cmdargs) throws IOException
    {
        try
        {
            return Runtime.getRuntime().exec(cmdargs);
        }
        catch (IOException e)
        {
            Logger.log(new LogAlert(LogAlert.UNREPEATABLE, e.getMessage(), e));
            throw e;
        }
    }

    /**
     * <p>Gets the preferred file browser name</p>
     * <p>Currently supported browsers are Path Finder and Finder. If Path Finder is currently running
     * (not just installed), then "Path Finder is returned; else, "Finder" is returned.</p>
     * @return "Path Finder" if it is currently running; else "Finder"
     */
    private static String getFileBrowserName()
    {
        try
        {
            // slowwwwwwww
            if ("true".equalsIgnoreCase(performOSAScript("tell application \"System Events\" to exists process \"Path Finder\"")))
            {
                Debug.outNoStack("Path Finder is running");

                return "Path Finder";
            }
            else
            {
                return "Finder";
            }
        }
        catch (IOException e)
        {
            Debug.printStackTrace(e);
            Logger.log(new LogEvent(LOGID, e.getMessage(), e));

            return "Finder";
        }
    }
    
	public boolean
	testNativeAvailability(
		String	name )
	
		throws PlatformManagerException
	{
	    throw new PlatformManagerException("Unsupported capability called on platform manager");		
	}
    
	public void
	traceRoute(
		InetAddress							interface_address,
		InetAddress							target,
		PlatformManagerPingCallback			callback )
	
		throws PlatformManagerException
	{
	    throw new PlatformManagerException("Unsupported capability called on platform manager");		
	}
	
	public void
	ping(
		InetAddress							interface_address,
		InetAddress							target,
		PlatformManagerPingCallback			callback )
	
		throws PlatformManagerException
	{
	    throw new PlatformManagerException("Unsupported capability called on platform manager");		
	}
	
    public void
    addListener(
    	PlatformManagerListener		listener )
    {
    }
    
    public void
    removeListener(
    	PlatformManagerListener		listener )
    {
    }
}