/*
 * 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 jline.FileNameCompletor

import org.codehaus.groovy.tools.shell.CommandSupport
import org.codehaus.groovy.tools.shell.Shell

/**
 * The 'load' command.
 *
 * @version $Id$
 * @author <a href="mailto:jason@planet57.com">Jason Dillon</a>
 */
class LoadCommand
    extends CommandSupport
{
    LoadCommand(final Shell shell) {
        super(shell, 'load', '\\l')

        alias('.', '\\.')
    }

    protected List createCompletors() {
        return [ new FileNameCompletor() ]
    }

    Object execute(final List args) {
        assert args != null
        
        if (args.size() == 0) {
            fail("Command 'load' requires at least one argument") // TODO: i18n
        }

        for (source in args) {
            URL url
            
            log.debug("Attempting to load: $url")
            
            try {
                url = new URL("$source")
            }
            catch (MalformedURLException e) {
                def file = new File("$source")
                
                if (!file.exists()) {
                    fail("File not found: $file") // TODO: i18n
                }
                
                url = file.toURI().toURL()
            }

            load(url)
        }
    }

    void load(final URL url) {
        assert url != null

        if (io.verbose) {
            io.out.println("Loading: $url")
        }

        url.eachLine {
            shell << it
        }
    }
}