/*
* Copyright (c) 2002-2012, the original author or authors.
*
* This software is distributable under the BSD license. See the terms of the
* BSD license in the documentation provided with this software.
*
* http://www.opensource.org/licenses/bsd-license.php
*/
package jline.console.internal;
import jline.console.ConsoleReader;
import jline.console.completer.ArgumentCompleter;
import jline.console.completer.Completer;
import jline.console.history.FileHistory;
import jline.internal.Configuration;
import java.io.File;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.StringTokenizer;
// FIXME: Clean up API and move to jline.console.runner package
/**
* A pass-through application that sets the system input stream to a
* {@link ConsoleReader} and invokes the specified main method.
*
* @author <a href="mailto:mwp1@cornell.edu">Marc Prud'hommeaux</a>
* @since 2.7
*/
public class ConsoleRunner
{
public static final String property = "jline.history";
// FIXME: This is really ugly... re-write this
public static void main(final String[] args) throws Exception {
List<String> argList = new ArrayList(Arrays.asList(args));
if (argList.size() == 0) {
usage();
return;
}
String historyFileName = System.getProperty(ConsoleRunner.property, null);
String mainClass = argList.remove(0);
ConsoleReader reader = new ConsoleReader();
if (historyFileName != null) {
reader.setHistory(new FileHistory(new File(Configuration.getUserHome(),
String.format(".jline-%s.%s.history", mainClass, historyFileName))));
}
else {
reader.setHistory(new FileHistory(new File(Configuration.getUserHome(),
String.format(".jline-%s.history", mainClass))));
}
String completors = System.getProperty(ConsoleRunner.class.getName() + ".completers", "");
List<Completer> completorList = new ArrayList<Completer>();
for (StringTokenizer tok = new StringTokenizer(completors, ","); tok.hasMoreTokens();) {
Object obj = Class.forName(tok.nextToken()).newInstance();
completorList.add((Completer) obj);
}
if (completorList.size() > 0) {
reader.addCompleter(new ArgumentCompleter(completorList));
}
ConsoleReaderInputStream.setIn(reader);
try {
Class type = Class.forName(mainClass);
Method method = type.getMethod("main", new Class[]{String[].class});
method.invoke(null);
}
finally {
// just in case this main method is called from another program
ConsoleReaderInputStream.restoreIn();
}
}
private static void usage() {
System.out.println("Usage: \n java " + "[-Djline.history='name'] "
+ ConsoleRunner.class.getName()
+ " <target class name> [args]"
+ "\n\nThe -Djline.history option will avoid history"
+ "\nmangling when running ConsoleRunner on the same application."
+ "\n\nargs will be passed directly to the target class name.");
}
}