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/*
* Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org> and others
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0 which is available at
* https://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package org.eclipse.jgit.pgm;
import java.text.MessageFormat;
import java.util.ArrayList;
import java.util.EnumSet;
import java.util.List;
import org.eclipse.jgit.diff.DiffConfig;
import org.eclipse.jgit.errors.IncorrectObjectTypeException;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.pgm.internal.CLIText;
import org.eclipse.jgit.pgm.opt.PathTreeFilterHandler;
import org.eclipse.jgit.revwalk.FollowFilter;
import org.eclipse.jgit.revwalk.ObjectWalk;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevFlag;
import org.eclipse.jgit.revwalk.RevObject;
import org.eclipse.jgit.revwalk.RevSort;
import org.eclipse.jgit.revwalk.RevWalk;
import org.eclipse.jgit.revwalk.filter.AndRevFilter;
import org.eclipse.jgit.revwalk.filter.AuthorRevFilter;
import org.eclipse.jgit.revwalk.filter.CommitterRevFilter;
import org.eclipse.jgit.revwalk.filter.MessageRevFilter;
import org.eclipse.jgit.revwalk.filter.RevFilter;
import org.eclipse.jgit.treewalk.filter.AndTreeFilter;
import org.eclipse.jgit.treewalk.filter.TreeFilter;
import org.kohsuke.args4j.Argument;
import org.kohsuke.args4j.Option;
abstract class RevWalkTextBuiltin extends TextBuiltin {
RevWalk walk;
@Option(name = "--objects")
boolean objects = false;
@Option(name = "--parents")
boolean parents = false;
@Option(name = "--total-count")
boolean count = false;
@Option(name = "--all")
boolean all = false;
char[] outbuffer = new char[Constants.OBJECT_ID_LENGTH * 2];
private final EnumSet<RevSort> sorting = EnumSet.noneOf(RevSort.class);
private void enableRevSort(RevSort type, boolean on) {
if (on)
sorting.add(type);
else
sorting.remove(type);
}
@Option(name = "--date-order")
void enableDateOrder(boolean on) {
enableRevSort(RevSort.COMMIT_TIME_DESC, on);
}
@Option(name = "--topo-order")
void enableTopoOrder(boolean on) {
enableRevSort(RevSort.TOPO, on);
}
@Option(name = "--reverse")
void enableReverse(boolean on) {
enableRevSort(RevSort.REVERSE, on);
}
@Option(name = "--boundary")
void enableBoundary(boolean on) {
enableRevSort(RevSort.BOUNDARY, on);
}
@Option(name = "--follow", metaVar = "metaVar_path")
private String followPath;
@Argument(index = 0, metaVar = "metaVar_commitish")
private List<RevCommit> commits = new ArrayList<>();
@Option(name = "--", metaVar = "metaVar_path", handler = PathTreeFilterHandler.class)
protected TreeFilter pathFilter = TreeFilter.ALL;
private final List<RevFilter> revLimiter = new ArrayList<>();
@Option(name = "--author")
void addAuthorRevFilter(String who) {
revLimiter.add(AuthorRevFilter.create(who));
}
@Option(name = "--committer")
void addCommitterRevFilter(String who) {
revLimiter.add(CommitterRevFilter.create(who));
}
@Option(name = "--grep")
void addCMessageRevFilter(String msg) {
revLimiter.add(MessageRevFilter.create(msg));
}
@Option(name = "--max-count", aliases = "-n", metaVar = "metaVar_n")
private int maxCount = -1;
@Override
protected void run() throws Exception {
walk = createWalk();
for (RevSort s : sorting)
walk.sort(s, true);
if (pathFilter == TreeFilter.ALL) {
if (followPath != null)
walk.setTreeFilter(FollowFilter.create(followPath,
db.getConfig().get(DiffConfig.KEY)));
} else if (pathFilter != TreeFilter.ALL) {
walk.setTreeFilter(AndTreeFilter.create(pathFilter,
TreeFilter.ANY_DIFF));
}
if (parents) {
walk.setRewriteParents(true);
}
if (revLimiter.size() == 1)
walk.setRevFilter(revLimiter.get(0));
else if (revLimiter.size() > 1)
walk.setRevFilter(AndRevFilter.create(revLimiter));
if (all) {
for (Ref a : db.getRefDatabase().getRefs()) {
ObjectId oid = a.getPeeledObjectId();
if (oid == null)
oid = a.getObjectId();
try {
commits.add(walk.parseCommit(oid));
} catch (IncorrectObjectTypeException e) {
// Ignore all refs which are not commits
}
}
}
if (commits.isEmpty()) {
final ObjectId head = db.resolve(Constants.HEAD);
if (head == null)
throw die(MessageFormat.format(CLIText.get().cannotResolve, Constants.HEAD));
commits.add(walk.parseCommit(head));
}
for (RevCommit c : commits) {
final RevCommit real = argWalk == walk ? c : walk.parseCommit(c);
if (c.has(RevFlag.UNINTERESTING))
walk.markUninteresting(real);
else
walk.markStart(real);
}
final long start = System.currentTimeMillis();
final int n = walkLoop();
if (count) {
final long end = System.currentTimeMillis();
errw.print(n);
errw.print(' ');
errw.println(MessageFormat.format(
CLIText.get().timeInMilliSeconds,
Long.valueOf(end - start)));
}
}
/**
* Create RevWalk
*
* @return a {@link org.eclipse.jgit.revwalk.RevWalk} object.
*/
protected RevWalk createWalk() {
RevWalk result;
if (objects)
result = new ObjectWalk(db);
else if (argWalk != null)
result = argWalk;
else
result = argWalk = new RevWalk(db);
result.setRewriteParents(false);
return result;
}
/**
* Loop the walk
*
* @return number of RevCommits walked
* @throws java.lang.Exception
* if any.
*/
protected int walkLoop() throws Exception {
int n = 0;
for (RevCommit c : walk) {
if (++n > maxCount && maxCount >= 0)
break;
show(c);
}
if (walk instanceof ObjectWalk) {
final ObjectWalk ow = (ObjectWalk) walk;
for (;;) {
final RevObject obj = ow.nextObject();
if (obj == null)
break;
show(ow, obj);
}
}
return n;
}
/**
* "Show" the current RevCommit when called from the main processing loop.
* <p>
* Implement this methods to define the behavior for subclasses of
* RevWalkTextBuiltin.
*
* @param c
* The current {@link org.eclipse.jgit.revwalk.RevCommit}
* @throws Exception
* if an error occurred
*/
protected abstract void show(RevCommit c) throws Exception;
/**
* "Show" the current RevCommit when called from the main processing loop.
* <p>
* The default implementation does nothing because most subclasses only
* process RevCommits.
*
* @param objectWalk
* the {@link org.eclipse.jgit.revwalk.ObjectWalk} used by
* {@link #walkLoop()}
* @param currentObject
* The current {@link org.eclipse.jgit.revwalk.RevObject}
* @throws Exception
* if an error occurred
*/
protected void show(final ObjectWalk objectWalk,
final RevObject currentObject) throws Exception {
// Do nothing by default. Most applications cannot show an object.
}
}
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