/**
* Copyright 2013 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Eclipse Public License version 1.0, available at
* http://www.eclipse.org/legal/epl-v10.html
*/
package org.jboss.forge.addon.shell.commands;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import javax.inject.Inject;
import org.jboss.forge.addon.resource.FileResource;
import org.jboss.forge.addon.resource.Resource;
import org.jboss.forge.addon.resource.ResourceFactory;
import org.jboss.forge.addon.shell.Shell;
import org.jboss.forge.addon.shell.ui.AbstractShellCommand;
import org.jboss.forge.addon.shell.ui.ShellContext;
import org.jboss.forge.addon.shell.util.PathspecParser;
import org.jboss.forge.addon.ui.context.UIBuilder;
import org.jboss.forge.addon.ui.context.UIContext;
import org.jboss.forge.addon.ui.hints.InputType;
import org.jboss.forge.addon.ui.input.UIInputMany;
import org.jboss.forge.addon.ui.metadata.UICommandMetadata;
import org.jboss.forge.addon.ui.metadata.WithAttributes;
import org.jboss.forge.addon.ui.result.Result;
import org.jboss.forge.addon.ui.result.Results;
import org.jboss.forge.addon.ui.util.Metadata;
/**
* Changes to the current directory
*
* @author <a href="ggastald@redhat.com">George Gastaldi</a>
*/
public class CdCommand extends AbstractShellCommand
{
@Inject
ResourceFactory resourceFactory;
@Inject
@WithAttributes(label = "Arguments", type = InputType.DIRECTORY_PICKER)
private UIInputMany<String> arguments;
@Override
public void initializeUI(UIBuilder builder) throws Exception
{
builder.add(arguments);
}
@Override
public UICommandMetadata getMetadata(UIContext context)
{
return Metadata.from(super.getMetadata(context), getClass()).name("cd")
.description("Change the current directory");
}
@Override
public Result execute(ShellContext context) throws Exception
{
Shell shell = context.getProvider();
FileResource<?> currentResource = shell.getCurrentResource();
Iterable<String> value = arguments.getValue();
Iterator<String> it = value == null ? Collections.<String> emptyList().iterator() : value.iterator();
final Result result;
if (it.hasNext())
{
String newPath = it.next();
final List<Resource<?>> newResource = new PathspecParser(resourceFactory, currentResource, newPath).resolve();
if (newResource.isEmpty() || !newResource.get(0).exists())
{
result = Results.fail(newPath + ": No such file or directory");
}
else
{
FileResource<?> newFileResource = newResource.get(0).reify(FileResource.class);
if (newFileResource == null)
{
result = Results.fail(newPath + ": Invalid path");
}
else
{
shell.setCurrentResource(newFileResource);
result = Results.success();
}
}
}
else
{
result = Results.success();
}
return result;
}
}