Exemple #1
0
  /**
   * System command. Execute a command and insert the result.
   *
   * @param args
   * @param help
   * @param patterns
   * @param low
   * @param high
   */
  public String system_internal(boolean allowFail, String args[]) throws Exception {
    verifyCommand(
        args,
        "${"
            + (allowFail ? "system-allow-fail" : "system")
            + ";<command>[;<in>]}, execute a system command",
        null,
        2,
        3);
    String command = args[1];
    String input = null;

    if (args.length > 2) {
      input = args[2];
    }

    Process process = Runtime.getRuntime().exec(command, null, domain.getBase());
    if (input != null) {
      process.getOutputStream().write(input.getBytes("UTF-8"));
    }
    process.getOutputStream().close();

    String s = IO.collect(process.getInputStream(), "UTF-8");
    int exitValue = process.waitFor();
    if (exitValue != 0) return exitValue + "";

    if (!allowFail && (exitValue != 0)) {
      domain.error("System command " + command + " failed with " + exitValue);
    }
    return s.trim();
  }
 public static int ensureNTServiceIsRunning(String serviceName, String service) throws Exception {
   ArrayList<String> serviceList = getRunningNTServices();
   if (serviceList == null) return -1; // not NT kernel?
   for (String svc : serviceList) {
     if (serviceName.equals(svc.trim())) return 0; // service already running
   }
   Process process = RUNTIME.exec(comSpec + "net start \"" + service + "\"");
   process.waitFor(); // wait for the process to complete
   int rc = process.exitValue(); // pick up its return code
   boolean success = (rc == 0);
   if (success) System.out.println("Successfully started service '" + serviceName + "'.");
   return (success ? 1 : -1);
 }
Exemple #3
0
  public static boolean exec(String cmd) throws Exception {
    int exitVal = -1;
    try {
      Runtime rt = Runtime.getRuntime();
      Process proc = rt.exec(new String[] {"/bin/bash", "-c", cmd});

      OutputHandler err = new OutputHandler(proc.getErrorStream(), cmd);
      err.start();

      OutputHandler out = new OutputHandler(proc.getInputStream(), cmd);
      out.start();

      exitVal = proc.waitFor();

    } catch (Throwable t) {
      t.printStackTrace();
    }
    return (exitVal == 0);
  }
Exemple #4
0
  /**
   * Given class of the interface for a fluid engine, build a concrete instance of that interface
   * that calls back into a Basic Engine for all methods in the interface.
   */
  private static BasicEngine buildCallbackEngine(String engineInterface, Class cEngine) {
    // build up list of callbacks for <engineInterface>
    StringBuffer decls = new StringBuffer();
    Method[] engineMethods = cEngine.getMethods();
    for (int i = 0; i < engineMethods.length; i++) {
      Method meth = engineMethods[i];
      // skip methods that aren't declared in the interface
      if (meth.getDeclaringClass() != cEngine) {
        continue;
      }
      decls.append(
          "    public " + Utils.asTypeDecl(meth.getReturnType()) + " " + meth.getName() + "(");
      Class[] params = meth.getParameterTypes();
      for (int j = 0; j < params.length; j++) {
        decls.append(Utils.asTypeDecl(params[j]) + " p" + j);
        if (j != params.length - 1) {
          decls.append(", ");
        }
      }
      decls.append(") {\n");
      decls.append(
          "        return ("
              + Utils.asTypeDecl(meth.getReturnType())
              + ")super.callNative(\""
              + meth.getName()
              + "\", new Object[] {");
      for (int j = 0; j < params.length; j++) {
        decls.append("p" + j);
        if (j != params.length - 1) {
          decls.append(", ");
        }
      }
      decls.append("} );\n");
      decls.append("    }\n\n");
    }

    // write template file
    String engineName = "BasicEngine_" + engineInterface;
    String fileName = engineName + ".java";
    try {
      String contents = Utils.readFile("lava/engine/basic/BasicEngineTemplate.java").toString();
      // remove package name
      contents = Utils.replaceAll(contents, "package lava.engine.basic;", "");
      // for class decl
      contents =
          Utils.replaceAll(
              contents, "extends BasicEngine", "extends BasicEngine implements " + engineInterface);
      // for constructor
      contents = Utils.replaceAll(contents, "BasicEngineTemplate", engineName);
      // for methods
      contents = Utils.replaceAll(contents, "// INSERT METHODS HERE", decls.toString());
      Utils.writeFile(fileName, contents);
    } catch (IOException e) {
      e.printStackTrace();
      System.exit(1);
    }

    // compile the file
    try {
      Process jProcess = Runtime.getRuntime().exec("jikes " + fileName, null, null);
      jProcess.waitFor();
    } catch (Exception e) {
      System.err.println("Error compiling auto-generated file " + fileName);
      e.printStackTrace();
      System.exit(1);
    }

    // instantiate the class
    BasicEngine result = null;
    try {
      result = (BasicEngine) Class.forName(engineName).newInstance();
      // cleanup the files we made
      new File(engineName + ".java").delete();
      new File(engineName + ".class").delete();
    } catch (Exception e) {
      e.printStackTrace();
      System.exit(1);
    }

    return result;
  }