P4JNI.java #1

package com.perforce.api;

import java.io.*;
import java.util.*;

/*
 * Copyright (c) 2001, Perforce Software, All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

/**
 * This class handles the Java Native Interface to the P4 libraries.
 *
 * @author <a href="mailto:david@markley.cc">David Markley</a>
 * @version $Date: 2003/12/02 $ $Revision: #1 $
 */
public class P4JNI extends Thread {
  private String cmd[];
  private Object listener;
  private Env environ;
  private static boolean valid = false;
  private boolean has_pipes = false;
  // This Pipe Set is used for reading from the Perforce shared library.
  private BufferedReader in_reader;
  private PipedWriter in_writer;
  // This Pipe Set is used for writing to the Perforce shared library.
  private PipedReader out_reader;
  private BufferedWriter out_writer;

  static {
    try {
      System.loadLibrary("perforce");
      valid = true;
    }
    catch (UnsatisfiedLinkError err) {
      valid = false;
    }
  }

  private native synchronized void exec(String[] cmd, Object listener, String port, String user, String password, String client);

  public P4JNI() {
    setupPipes();
  }

  private void setupPipes() {
    if (has_pipes) return;
    try {
      in_writer = new PipedWriter();
      in_reader = new BufferedReader(new PipedReader(in_writer));
      out_reader = new PipedReader();
      out_writer = new BufferedWriter(new PipedWriter(out_reader));
      has_pipes = true;
    }
    catch (IOException ex) {
    }
  }

  public static boolean isValid() {
    return valid;
  }

  public boolean isPiped() {
    return has_pipes;
  }

  public BufferedReader getReader() {
    return in_reader;
  }

  public BufferedWriter getWriter() {
    return out_writer;
  }

  public void runCommand(Object listener, String[] cmd, Env environ) {
    this.listener = listener;
    this.cmd = cmd;
    this.environ = environ;
    start();
  }

  public synchronized void in_write(char[] cbuf, int off, int len) {
    try {
      in_writer.write(cbuf, off, len);
    }
    catch (IOException ex) {
    }
  }

  public synchronized void in_close() {
    try {
      in_writer.close();
    }
    catch (IOException ex) {
    }
  }

  public synchronized void in_flush() {
    try {
      in_writer.flush();
    }
    catch (IOException ex) {
    }
  }

  public synchronized int out_read(char[] cbuf, int off, int len) {
    try {
      return out_reader.read(cbuf, off, len);
    }
    catch (IOException ex) {
      return -1;
    }
  }

  public void run() {
    exec(cmd, listener, environ.getPort(), environ.getUser(),
	 environ.getPassword(), environ.getClient());
  }

  public static void main(String[] args) {
    String cmd[] = { "p4", "dirs", "//depot/pd/ttg/%1" };
    String cmd2[] = { "p4", "fstat", "//depot/pd/ttg/..." };
    String cmd3[] = { "p4", "client", "-i" };

    if (! P4JNI.isValid()) {
      System.err.println("No Perforce shared library available.");
      System.exit(-1);
    }

    String txt = "Client: dmarkley-testit\nOwner:  vss\nDescription:\n\tCreated by JNI interface.\n\nRoot:   d:\\foobarbaz\n\nOptions:        noallwrite noclobber compress crlf locked nomodtime\n\nView:\n\t//depot/pd/ttg/... //dmarkley-testit/ttg/...\n\n";
    char foo[] = txt.toCharArray();

    P4JNI tmpA = new P4JNI();
    P4JNI tmpB = new P4JNI();
    Env myEnv = new Env();
    BufferedReader br;
    BufferedWriter bw;
    String l;

    myEnv.setPort("localhost:1666");
    myEnv.setUser("vss");
    myEnv.setPassword("Blows");
    myEnv.setClient("vss-dmarkley");
    tmpA.runCommand(tmpB, cmd3, myEnv);
    br = tmpB.getReader();
    bw = tmpB.getWriter();
    try {
      bw.write(foo, 0, foo.length);
      bw.close();
    }
    catch (IOException ex) {
      ex.printStackTrace();
    }
    try {
      while (null != (l = br.readLine())) {
	System.out.println("LINE: "+l);
      }
    }
    catch (IOException ex) {
      ex.printStackTrace();
    }
  }
}