コード例 #1
0
ファイル: BaseTest.java プロジェクト: chrreisinger/antlr4
 public String execRecognizer() {
   try {
     String inputFile = new File(tmpdir, "input").getAbsolutePath();
     String[] args =
         new String[] {"java", "-classpath", tmpdir + pathSep + CLASSPATH, "Test", inputFile};
     // String cmdLine = "java -classpath "+CLASSPATH+pathSep+tmpdir+" Test " + new File(tmpdir,
     // "input").getAbsolutePath();
     // System.out.println("execParser: "+cmdLine);
     Process process = Runtime.getRuntime().exec(args, null, new File(tmpdir));
     StreamVacuum stdoutVacuum = new StreamVacuum(process.getInputStream());
     StreamVacuum stderrVacuum = new StreamVacuum(process.getErrorStream());
     stdoutVacuum.start();
     stderrVacuum.start();
     process.waitFor();
     stdoutVacuum.join();
     stderrVacuum.join();
     String output = null;
     output = stdoutVacuum.toString();
     if (stderrVacuum.toString().length() > 0) {
       this.stderrDuringParse = stderrVacuum.toString();
       System.err.println("exec stderrVacuum: " + stderrVacuum);
     }
     return output;
   } catch (Exception e) {
     System.err.println("can't exec recognizer");
     e.printStackTrace(System.err);
   }
   return null;
 }
コード例 #2
0
    // Creates a new thread, runs the program in that thread, and reports any errors as needed.
    private void run(String clazz) {
      try {
        // Makes sure the JVM resets if it's already running.
        if (JVMrunning) kill();

        // Some String constants for java path and OS-specific separators.
        String separator = System.getProperty("file.separator");
        String path = System.getProperty("java.home") + separator + "bin" + separator + "java";

        // Tries to run compiled code.
        ProcessBuilder builder = new ProcessBuilder(path, clazz);

        // Should be good now! Everything past this is on you. Don't mess it up.
        println(
            "Build succeeded on " + java.util.Calendar.getInstance().getTime().toString(), progErr);
        println("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~", progErr);

        JVM = builder.start();

        // Note that as of right now, there is no support for input. Only output.
        Reader errorReader = new InputStreamReader(JVM.getErrorStream());
        Reader outReader = new InputStreamReader(JVM.getInputStream());
        // Writer inReader = new OutputStreamWriter(JVM.getOutputStream());

        redirectErr = redirectIOStream(errorReader, err);
        redirectOut = redirectIOStream(outReader, out);
        // redirectIn = redirectIOStream(null, inReader);
      } catch (Exception e) {
        // This catches any other errors we might get.
        println("Some error thrown", progErr);
        logError(e.toString());
        displayLog();
        return;
      }
    }
コード例 #3
0
ファイル: BaseTest.java プロジェクト: chrreisinger/antlr4
  public String execClass(String className) {
    /* HOW TO GET STDOUT?
    try {
    	ClassLoader cl_new = new DirectoryLoader(new File(tmpdir));
    	Class compiledClass = cl_new.loadClass(className);
    	Method m = compiledClass.getMethod("main");
    	m.invoke(null);
    } catch (Exception ex) {
    	ex.printStackTrace(System.err);
    }
    */

    try {
      String[] args =
          new String[] {
            "java",
            "-classpath",
            tmpdir + pathSep + CLASSPATH,
            className,
            new File(tmpdir, "input").getAbsolutePath()
          };
      // String cmdLine = "java -classpath "+CLASSPATH+pathSep+tmpdir+" Test " + new File(tmpdir,
      // "input").getAbsolutePath();
      // System.out.println("execParser: "+cmdLine);
      Process process = Runtime.getRuntime().exec(args, null, new File(tmpdir));
      StreamVacuum stdoutVacuum = new StreamVacuum(process.getInputStream());
      StreamVacuum stderrVacuum = new StreamVacuum(process.getErrorStream());
      stdoutVacuum.start();
      stderrVacuum.start();
      process.waitFor();
      stdoutVacuum.join();
      stderrVacuum.join();
      String output = null;
      output = stdoutVacuum.toString();
      if (stderrVacuum.toString().length() > 0) {
        this.stderrDuringParse = stderrVacuum.toString();
        System.err.println("exec stderrVacuum: " + stderrVacuum);
      }
      return output;
    } catch (Exception e) {
      System.err.println("can't exec recognizer");
      e.printStackTrace(System.err);
    }
    return null;
  }