/**
* Copyright 2013 Apigee Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package io.apigee.trireme.shell;
import io.apigee.trireme.core.NodeEnvironment;
import io.apigee.trireme.core.NodeException;
import io.apigee.trireme.core.NodeScript;
import io.apigee.trireme.core.ScriptStatus;
import io.apigee.trireme.core.internal.Version;
import org.mozilla.javascript.Context;
import org.mozilla.javascript.JavaScriptException;
import org.mozilla.javascript.RhinoException;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
/**
* This is the "main," which runs the script.
*/
public class Main
{
private String scriptSource;
private boolean runRepl;
private boolean printEval;
private String[] scriptArgs;
private static void printUsage()
{
System.err.println("Usage: " + Main.class.getName() + " [options] [ -e script | script.js ] [arguments]");
System.err.println();
System.err.println("Options:");
System.err.println(" -v, --version Print Version");
System.err.println(" -e, --eval script Evaluate script");
System.err.println(" -p, --print Evaluate script and print result");
System.err.println(" -i, --interactive Enter the REPL even if stdin doesn't appear to be a terminal");
// TODO --no-deprecation, --trace-deprecation
}
private static void printVersion()
{
NodeEnvironment env = new NodeEnvironment();
System.err.println("Trireme " + Version.TRIREME_VERSION +
" node v" + env.getDefaultNodeVersion());
}
public static void main(String[] args)
{
Main m = new Main();
if (!m.parseArgs(args)) {
System.exit(1);
} else {
int ec = m.run();
System.exit(ec);
}
}
private boolean parseArgs(String[] args)
{
int i = 0;
boolean wasEval = false;
while (i < args.length) {
if ("-h".equals(args[i]) || "--help".equals(args[i])) {
printUsage();
return false;
} else if ("-v".equals(args[i]) || "--version".equals(args[i])) {
printVersion();
return false;
} else if (wasEval) {
wasEval = false;
scriptSource = args[i];
} else if ("-i".equals(args[i]) || "--interactive".equals(args[i])) {
runRepl = true;
} else if ("-e".equals(args[i]) || "--eval".equals(args[i])) {
wasEval = true;
} else if ("-p".equals(args[i]) || "--print".equals(args[i])) {
wasEval = true;
printEval = true;
} else {
break;
}
i++;
}
if (i < args.length) {
scriptArgs = new String[args.length - i];
System.arraycopy(args, i, scriptArgs, 0, scriptArgs.length);
}
return true;
}
private int run()
{
NodeEnvironment env = new NodeEnvironment();
try {
NodeScript ns;
if (scriptSource != null) {
// Force an "eval"
ns = env.createScript("[eval]", scriptSource, scriptArgs);
ns.setPrintEval(printEval);
} else {
ns = env.createScript(scriptArgs, runRepl);
}
ScriptStatus status;
try {
Future<ScriptStatus> future = ns.execute();
status = future.get();
} finally {
ns.close();
}
if (status.hasCause()) {
printException(status.getCause());
}
return status.getExitCode();
} catch (NodeException ne) {
ne.printStackTrace(System.err);
return 99;
} catch (InterruptedException ie) {
return 99;
} catch (ExecutionException ee) {
printException(ee.getCause());
return 99;
} finally {
env.close();
}
}
private static void printException(Throwable ee)
{
if (ee instanceof JavaScriptException) {
Object value = ((JavaScriptException)ee).getValue();
Context.enter();
System.err.println(Context.toString(value));
Context.exit();
}
if (ee instanceof RhinoException) {
RhinoException re = (RhinoException)ee;
System.err.println(re.details());
System.err.println(re.getScriptStackTrace());
} else {
System.err.println(ee.getMessage());
ee.printStackTrace(System.err);
}
}
}