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RubyClassPathVariable.java
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/
RubyClassPathVariable.java
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/***** 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) 2007 Ola Bini <ola@ologix.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the CPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the CPL, the GPL or the LGPL.
***** END LICENSE BLOCK *****/
package org.jruby;
import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import org.jruby.anno.JRubyMethod;
import org.jruby.runtime.Block;
import org.jruby.runtime.ThreadContext;
import org.jruby.runtime.builtin.IRubyObject;
/**
* @author <a href="mailto:ola.bini@ki.se">Ola Bini</a>
*/
public class RubyClassPathVariable extends RubyObject {
public static void createClassPathVariable(Ruby runtime) {
RubyClassPathVariable self = new RubyClassPathVariable(runtime);
runtime.getEnumerable().extend_object(self);
runtime.defineReadonlyVariable("$CLASSPATH", self);
self.getMetaClass().defineAnnotatedMethods(RubyClassPathVariable.class);
}
private RubyClassPathVariable(Ruby runtime) {
super(runtime, runtime.getObject());
}
@JRubyMethod(name = {"append", "<<"}, required = 1)
public IRubyObject append(IRubyObject obj) {
String ss = obj.convertToString().toString();
try {
URL url = getURL(ss);
getRuntime().getJRubyClassLoader().addURL(url);
} catch (MalformedURLException mue) {
throw getRuntime().newArgumentError(mue.getLocalizedMessage());
}
return this;
}
private URL getURL(String target) throws MalformedURLException {
try {
// First try assuming a protocol is included
return new URL(target);
} catch (MalformedURLException e) {
// Assume file: protocol
File f = new File(target);
String path = target;
if (f.exists() && f.isDirectory() && !path.endsWith("/")) {
// URLClassLoader requires that directores end with slashes
path = path + "/";
}
return new URL("file", null, path);
}
}
@JRubyMethod(name = {"size", "length"})
public IRubyObject size() {
return getRuntime().newFixnum(getRuntime().getJRubyClassLoader().getURLs().length);
}
@JRubyMethod(name = "each", frame = true)
public IRubyObject each(Block block) {
URL[] urls = getRuntime().getJRubyClassLoader().getURLs();
ThreadContext ctx = getRuntime().getCurrentContext();
for(int i=0,j=urls.length;i<j;i++) {
block.yield(ctx, getRuntime().newString(urls[i].toString()));
}
return getRuntime().getNil();
}
@JRubyMethod(name = "to_s")
public IRubyObject to_s() {
return callMethod(getRuntime().getCurrentContext(), "to_a").callMethod(getRuntime().getCurrentContext(), "to_s");
}
@JRubyMethod(name = "inspect")
public IRubyObject inspect() {
return callMethod(getRuntime().getCurrentContext(), "to_a").callMethod(getRuntime().getCurrentContext(), "inspect");
}
}// RubyClassPathVariable