public static void exec(Runnable toRun, String[] args, boolean exit, LogInterface logInterface) {
// --Init
log = logInterface;
// (cleanup)
ignoredClasspath = new String[0];
runName = "<unnamed>";
outputDB = null;
dataDB = null;
execDir = null;
logger = null;
// (bootstrap)
Map<String, String> options = parseOptions(args); // get options
fillOptions(BOOTSTRAP_CLASSES, options, false); // bootstrap
log.bootstrap();
log.startTrack("init");
// (fill options)
Class<?>[] visibleClasses = getVisibleClasses(options); // get classes
Map<String, Field> optionFields = fillOptions(visibleClasses, options); // fill
try {
initDatabase(visibleClasses, options, optionFields); // database
} catch (DatabaseException e) {
log.warn(LOG_TAG, e.getMessage());
}
dumpOptions(options); // file dump
log.endTrack("init");
log.setup();
// --Run Program
try {
log.startTrack("main");
toRun.run();
log.endTrack("main"); // ends main
log.startTrack("flushing");
if (logger != null) {
logger.save();
}
} catch (Throwable e) { // catch everything
log.exception(e);
System.err.flush();
if (logger != null) {
exitMessage = e.getClass().getName() + ": " + e.getMessage();
logger.suggestFlush(); // not a save!
}
log.exit(ExitCode.FATAL_EXCEPTION);
}
log.endTrack("flushing");
if (exit) {
log.exit(ExitCode.OK); // soft exit
}
}
private static final void ensureScalaPath(Map<String, String> options, String[] cp) {
// (check if it's in the classpath)
try {
Class.forName("scala.None", false, ClassLoader.getSystemClassLoader());
} catch (ClassNotFoundException e) {
// (case: scala library not in the classpath)
if (options.containsKey(SCALA_PATH)) {
// (case: scala_path option set)
try {
String path = options.get(SCALA_PATH);
if (!(new File(path).exists())) {
System.err.println("The library strongly integrates with the Scala runtime, ");
System.err.println("however it could not find the Scala library (scala-library.jar) ");
System.err.println(
"at the path given by the command line option '" + SCALA_PATH + "': " + path);
log.exit(ExitCode.BAD_OPTION);
}
URL url = new File(path).toURI().toURL();
URLClassLoader sysloader = (URLClassLoader) ClassLoader.getSystemClassLoader();
Class<URLClassLoader> sysclass = URLClassLoader.class;
Method method = sysclass.getDeclaredMethod("addURL", url.getClass());
boolean savedAccessible = method.isAccessible();
method.setAccessible(true);
method.invoke(sysloader, new Object[] {url});
method.setAccessible(savedAccessible);
Class.forName("scala.None", false, ClassLoader.getSystemClassLoader());
} catch (Exception ex) {
throw log.fail(ex);
} // end try catch
} else {
// (case: we cannot find the scala library at all)
System.err.println("The library strongly integrates with the Scala runtime, ");
System.err.println(
"however it could not find the Scala library (scala-library.jar) in the classpath, ");
System.err.println("and the '" + SCALA_PATH + "' command line argument is not set.");
log.exit(ExitCode.BAD_OPTION);
}
}
options.remove(SCALA_PATH);
}