// 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;
}
}
/**
* 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 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);
}
