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;
}
// 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;
}
}
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;
}
// Kills the JVM process and any active threads on it.
private void kill() {
if (redirectErr != null) {
redirectErr.close();
redirectErr.interrupt();
}
if (redirectOut != null) {
redirectOut.close();
redirectOut.interrupt();
}
if (JVM != null) {
JVM.destroy();
JVM = null;
}
JVMrunning = false;
}
// Kills the JVM process and any active threads on it.
private void kill() {
if (redirectErr != null) {
redirectErr.close();
redirectErr.interrupt();
}
if (redirectOut != null) {
redirectOut.close();
redirectOut.interrupt();
}
if (JVM != null) {
JVM.destroy();
JVM = null;
}
JVMrunning = false;
println("JVM reset on " + java.util.Calendar.getInstance().getTime().toString(), progErr);
}