/***** BEGIN LICENSE BLOCK *****
* Version: CPL 1.0/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Common Public
* License Version 1.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.eclipse.org/legal/cpl-v10.html
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* Copyright (C) 2002-2004 Anders Bengtsson <ndrsbngtssn@yahoo.se>
* Copyright (C) 2004 Stefan Matthias Aust <sma@3plus4.de>
* Copyright (C) 2005 Charles O Nutter <headius@headius.com>
* Copyright (C) 2005 Thomas E. Enebo <enebo@acm.org>
*
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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package org.jruby.runtime.load;
import java.io.BufferedInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.net.URL;
import java.util.jar.JarEntry;
import java.util.jar.JarInputStream;
import java.util.jar.Manifest;
import org.jruby.Ruby;
import org.jruby.runtime.builtin.IRubyObject;
/**
* Loading of Ruby scripts packaged in Jar files.
*
* Usually the Ruby scripts are accompanied by Java class files in the Jar.
*
*/
public class JarredScript implements Library {
private final LoadServiceResource resource;
public JarredScript(LoadServiceResource resource) {
this.resource = resource;
}
public LoadServiceResource getResource() {
return this.resource;
}
public void load(Ruby runtime, boolean wrap) {
URL jarFile = resource.getURL();
// Make Java class files in the jar reachable from Ruby
runtime.getJRubyClassLoader().addURL(jarFile);
try {
JarInputStream in = new JarInputStream(new BufferedInputStream(jarFile.openStream()));
Manifest mf = in.getManifest();
if (mf != null) {
String rubyInit = mf.getMainAttributes().getValue("Ruby-Init");
if (rubyInit != null) {
JarEntry entry = in.getNextJarEntry();
while (entry != null && !entry.getName().equals(rubyInit)) {
entry = in.getNextJarEntry();
}
if (entry != null) {
IRubyObject old = runtime.getGlobalVariables().isDefined("$JAR_URL") ? runtime.getGlobalVariables().get("$JAR_URL") : runtime.getNil();
try {
runtime.getGlobalVariables().set("$JAR_URL", runtime.newString("jar:" + jarFile + "!/"));
runtime.loadFile("init", in, wrap);
} finally {
runtime.getGlobalVariables().set("$JAR_URL", old);
}
}
}
}
in.close();
} catch (FileNotFoundException e) {
throw runtime.newIOErrorFromException(e);
} catch (IOException e) {
throw runtime.newIOErrorFromException(e);
}
}
}