org.codehaus.groovy.tools.shell.commands.RegisterCommand.groovy Maven / Gradle / Ivy
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Groovy: A powerful, dynamic language for the JVM
/*
* Copyright 2003-2007 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.codehaus.groovy.tools.shell.commands
import org.codehaus.groovy.tools.shell.CommandSupport
import org.codehaus.groovy.tools.shell.Shell
import org.codehaus.groovy.tools.shell.Command
/**
* The 'register' command.
*
* @version $Id: RegisterCommand.groovy 12257 2008-05-04 08:51:41Z user57 $
* @author Chris K Wensel
*/
class RegisterCommand
extends CommandSupport
{
RegisterCommand(final Shell shell) {
super(shell, "register", "\\rc")
}
public Object execute(List args) {
assert args != null
if (args.size() < 1) {
fail("Command 'register' requires at least 1 arguments") // TODO: i18n
}
String classname = args.get(0)
Class type = getClassLoader().loadClass(classname)
Command command = null;
if (args.size() == 1) { // use default name
command = type.newInstance(shell)
}
else if (args.size() == 2) { // pass name to ctor
command = type.newInstance(shell, args.get(1), null)
}
else if (args.size() == 3) { // pass name, alias to ctor
command = type.newInstance(shell, args.get(1), args.get(2))
}
def oldcommand = registry[command.name] // let's prevent collisions
if (oldcommand) {
fail("Can not rebind command: ${command.name}") // TODO: i18n
}
if (log.debugEnabled) {
log.debug("Created command '${command.name}': $command")
}
command = shell << command
if (shell.runner) {
shell.runner.completor << command
}
}
}