/* Copyright (c) 2013-2014 Boundless and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Distribution License v1.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/org/documents/edl-v10.html
*
* Contributors:
* Victor Olaya (Boundless) - initial implementation
*/
package org.locationtech.geogig.cli.plumbing;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import jline.console.ConsoleReader;
import org.locationtech.geogig.api.GeoGIG;
import org.locationtech.geogig.api.RevObject;
import org.locationtech.geogig.api.plumbing.CatObject;
import org.locationtech.geogig.api.plumbing.RevObjectParse;
import org.locationtech.geogig.cli.AbstractCommand;
import org.locationtech.geogig.cli.GeogigCLI;
import org.locationtech.geogig.cli.annotation.ReadOnly;
import org.locationtech.geogig.storage.ObjectSerializingFactory;
import org.locationtech.geogig.storage.ObjectWriter;
import org.locationtech.geogig.storage.datastream.DataStreamSerializationFactoryV1;
import com.beust.jcommander.Parameter;
import com.beust.jcommander.Parameters;
import com.google.common.base.Optional;
import com.google.common.base.Suppliers;
/**
* The cat commands describes a repository element with no formatting at all. For a more elaborated
* display, see the {@link show} command.
*
*/
@ReadOnly
@Parameters(commandNames = "cat", commandDescription = "Describes a repository element")
public class Cat extends AbstractCommand {
/**
* The path to the element to display. Accepts all the notation types accepted by the RevParse
* class
*/
@Parameter(description = "<path>")
private List<String> paths = new ArrayList<String>();
/**
* Produce binary output instead of text output
*/
@Parameter(names = { "--binary" }, description = "Produce binary output")
private boolean binary;
@Override
public void runInternal(GeogigCLI cli) throws IOException {
checkParameter(paths.size() < 2, "Only one refspec allowed");
checkParameter(!paths.isEmpty(), "A refspec must be specified");
ConsoleReader console = cli.getConsole();
GeoGIG geogig = cli.getGeogig();
String path = paths.get(0);
Optional<RevObject> obj = geogig.command(RevObjectParse.class).setRefSpec(path).call();
checkParameter(obj.isPresent(), "refspec did not resolve to any object.");
if (binary) {
ObjectSerializingFactory factory = DataStreamSerializationFactoryV1.INSTANCE;
ObjectWriter<RevObject> writer = factory.createObjectWriter(obj.get().getType());
writer.write(obj.get(), System.out);
} else {
CharSequence s = geogig.command(CatObject.class)
.setObject(Suppliers.ofInstance(obj.get())).call();
console.println(s);
}
}
}