/* 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:
* Johnathan Garrett (LMN Solutions) - initial implementation
*/
package org.locationtech.geogig.cli.plumbing;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;
import jline.console.ConsoleReader;
import org.locationtech.geogig.api.RevObject;
import org.locationtech.geogig.api.plumbing.CreateDeduplicator;
import org.locationtech.geogig.api.plumbing.WalkGraphOp;
import org.locationtech.geogig.cli.AbstractCommand;
import org.locationtech.geogig.cli.CLICommand;
import org.locationtech.geogig.cli.GeogigCLI;
import org.locationtech.geogig.cli.annotation.ReadOnly;
import org.locationtech.geogig.storage.Deduplicator;
import com.beust.jcommander.Parameter;
import com.beust.jcommander.Parameters;
import com.google.common.base.Function;
import com.google.common.collect.Iterators;
import com.google.common.collect.Lists;
/**
*
*/
@ReadOnly
@Parameters(commandNames = "walk-graph", commandDescription = "Visit objects in history graph in post order (referenced objects before referring objects)")
public class WalkGraph extends AbstractCommand implements CLICommand {
@Parameter(description = "<[refspec]:[path]>", arity = 1)
private List<String> refList = Lists.newArrayList();
@Parameter(names = { "-v", "--verbose" }, description = "Verbose output, include metadata, object id, and object type among object path.")
private boolean verbose;
@Override
public void runInternal(GeogigCLI cli) throws IOException {
String ref;
if (refList.isEmpty()) {
ref = null;
} else {
ref = refList.get(0);
}
Deduplicator deduplicator = cli.getGeogig().command(CreateDeduplicator.class).call();
try {
Iterator<RevObject> iter = cli.getGeogig() //
.command(WalkGraphOp.class).setReference(ref) //
.setDeduplicator(deduplicator) //
// .setStrategy(lsStrategy) //
.call();
final ConsoleReader console = cli.getConsole();
if (!iter.hasNext()) {
if (ref == null) {
console.println("The working tree is empty");
} else {
console.println("The specified path is empty");
}
return;
}
Function<RevObject, CharSequence> printFunctor = new Function<RevObject, CharSequence>() {
@Override
public CharSequence apply(RevObject input) {
if (verbose) {
return String.format("%s: %s %s", input.getId(), input.getType(), input);
} else {
return String.format("%s: %s", input.getId(), input.getType());
}
}
};
Iterator<CharSequence> lines = Iterators.transform(iter, printFunctor);
while (lines.hasNext()) {
console.println(lines.next());
}
console.flush();
} finally {
deduplicator.release();
}
}
}