/*
* Copyright (C) 2009, Christian Halstrick <christian.halstrick@sap.com>
* Copyright (C) 2009, Johannes E. Schindelin
* Copyright (C) 2009, Johannes Schindelin <johannes.schindelin@gmx.de>
* and other copyright owners as documented in the project's IP log.
*
* This program and the accompanying materials are made available
* under the terms of the Eclipse Distribution License v1.0 which
* accompanies this distribution, is reproduced below, and is
* available at http://www.eclipse.org/org/documents/edl-v10.php
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* - Neither the name of the Eclipse Foundation, Inc. nor the
* names of its contributors may be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.eclipse.jgit.pgm;
import static java.lang.Integer.valueOf;
import static org.eclipse.jgit.lib.Constants.HEAD;
import static org.eclipse.jgit.lib.Constants.OBJECT_ID_STRING_LENGTH;
import java.io.BufferedOutputStream;
import java.io.IOException;
import java.text.MessageFormat;
import java.util.List;
import java.util.concurrent.TimeUnit;
import org.eclipse.jgit.diff.DiffAlgorithm;
import org.eclipse.jgit.diff.DiffAlgorithm.SupportedAlgorithm;
import org.eclipse.jgit.diff.DiffEntry;
import org.eclipse.jgit.diff.DiffFormatter;
import org.eclipse.jgit.diff.RawTextComparator;
import org.eclipse.jgit.diff.RenameDetector;
import org.eclipse.jgit.dircache.DirCacheIterator;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.ObjectReader;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.lib.TextProgressMonitor;
import org.eclipse.jgit.pgm.internal.CLIText;
import org.eclipse.jgit.pgm.opt.PathTreeFilterHandler;
import org.eclipse.jgit.treewalk.AbstractTreeIterator;
import org.eclipse.jgit.treewalk.CanonicalTreeParser;
import org.eclipse.jgit.treewalk.FileTreeIterator;
import org.eclipse.jgit.treewalk.filter.TreeFilter;
import org.eclipse.jgit.util.io.ThrowingPrintWriter;
import org.kohsuke.args4j.Argument;
import org.kohsuke.args4j.Option;
@Command(common = true, usage = "usage_ShowDiffs")
class Diff extends TextBuiltin {
private DiffFormatter diffFmt;
@Argument(index = 0, metaVar = "metaVar_treeish")
private AbstractTreeIterator oldTree;
@Argument(index = 1, metaVar = "metaVar_treeish")
private AbstractTreeIterator newTree;
@Option(name = "--cached", usage = "usage_cached")
private boolean cached;
@Option(name = "--", metaVar = "metaVar_paths", multiValued = true, handler = PathTreeFilterHandler.class)
private TreeFilter pathFilter = TreeFilter.ALL;
// BEGIN -- Options shared with Log
@Option(name = "-p", usage = "usage_showPatch")
boolean showPatch;
@Option(name = "-M", usage = "usage_detectRenames")
private Boolean detectRenames;
@Option(name = "--no-renames", usage = "usage_noRenames")
void noRenames(@SuppressWarnings("unused") boolean on) {
detectRenames = Boolean.FALSE;
}
@Option(name = "--algorithm", metaVar = "metaVar_diffAlg", usage = "usage_diffAlgorithm")
void setAlgorithm(SupportedAlgorithm s) {
diffFmt.setDiffAlgorithm(DiffAlgorithm.getAlgorithm(s));
}
@Option(name = "-l", usage = "usage_renameLimit")
private Integer renameLimit;
@Option(name = "--name-status", usage = "usage_nameStatus")
private boolean showNameAndStatusOnly;
@Option(name = "--ignore-space-at-eol")
void ignoreSpaceAtEol(@SuppressWarnings("unused") boolean on) {
diffFmt.setDiffComparator(RawTextComparator.WS_IGNORE_TRAILING);
}
@Option(name = "--ignore-leading-space")
void ignoreLeadingSpace(@SuppressWarnings("unused") boolean on) {
diffFmt.setDiffComparator(RawTextComparator.WS_IGNORE_LEADING);
}
@Option(name = "-b", aliases = { "--ignore-space-change" })
void ignoreSpaceChange(@SuppressWarnings("unused") boolean on) {
diffFmt.setDiffComparator(RawTextComparator.WS_IGNORE_CHANGE);
}
@Option(name = "-w", aliases = { "--ignore-all-space" })
void ignoreAllSpace(@SuppressWarnings("unused") boolean on) {
diffFmt.setDiffComparator(RawTextComparator.WS_IGNORE_ALL);
}
@Option(name = "-U", aliases = { "--unified" }, metaVar = "metaVar_linesOfContext")
void unified(int lines) {
diffFmt.setContext(lines);
}
@Option(name = "--abbrev", metaVar = "metaVar_n")
void abbrev(int lines) {
diffFmt.setAbbreviationLength(lines);
}
@Option(name = "--full-index")
void abbrev(@SuppressWarnings("unused") boolean on) {
diffFmt.setAbbreviationLength(OBJECT_ID_STRING_LENGTH);
}
@Option(name = "--src-prefix", usage = "usage_srcPrefix")
void sourcePrefix(String path) {
diffFmt.setOldPrefix(path);
}
@Option(name = "--dst-prefix", usage = "usage_dstPrefix")
void dstPrefix(String path) {
diffFmt.setNewPrefix(path);
}
@Option(name = "--no-prefix", usage = "usage_noPrefix")
void noPrefix(@SuppressWarnings("unused") boolean on) {
diffFmt.setOldPrefix(""); //$NON-NLS-1$
diffFmt.setNewPrefix(""); //$NON-NLS-1$
}
// END -- Options shared with Log
@Override
protected void init(final Repository repository, final String gitDir) {
super.init(repository, gitDir);
diffFmt = new DiffFormatter(new BufferedOutputStream(outs));
}
@Override
protected void run() throws Exception {
diffFmt.setRepository(db);
try {
if (cached) {
if (oldTree == null) {
ObjectId head = db.resolve(HEAD + "^{tree}"); //$NON-NLS-1$
if (head == null)
die(MessageFormat.format(CLIText.get().notATree, HEAD));
CanonicalTreeParser p = new CanonicalTreeParser();
ObjectReader reader = db.newObjectReader();
try {
p.reset(reader, head);
} finally {
reader.release();
}
oldTree = p;
}
newTree = new DirCacheIterator(db.readDirCache());
} else if (oldTree == null) {
oldTree = new DirCacheIterator(db.readDirCache());
newTree = new FileTreeIterator(db);
} else if (newTree == null)
newTree = new FileTreeIterator(db);
TextProgressMonitor pm = new TextProgressMonitor();
pm.setDelayStart(2, TimeUnit.SECONDS);
diffFmt.setProgressMonitor(pm);
diffFmt.setPathFilter(pathFilter);
if (detectRenames != null)
diffFmt.setDetectRenames(detectRenames.booleanValue());
if (renameLimit != null && diffFmt.isDetectRenames()) {
RenameDetector rd = diffFmt.getRenameDetector();
rd.setRenameLimit(renameLimit.intValue());
}
if (showNameAndStatusOnly) {
nameStatus(outw, diffFmt.scan(oldTree, newTree));
outw.flush();
} else {
diffFmt.format(oldTree, newTree);
diffFmt.flush();
}
} finally {
diffFmt.release();
}
}
static void nameStatus(ThrowingPrintWriter out, List<DiffEntry> files)
throws IOException {
for (DiffEntry ent : files) {
switch (ent.getChangeType()) {
case ADD:
out.println("A\t" + ent.getNewPath()); //$NON-NLS-1$
break;
case DELETE:
out.println("D\t" + ent.getOldPath()); //$NON-NLS-1$
break;
case MODIFY:
out.println("M\t" + ent.getNewPath()); //$NON-NLS-1$
break;
case COPY:
out.format("C%1$03d\t%2$s\t%3$s", valueOf(ent.getScore()), // //$NON-NLS-1$
ent.getOldPath(), ent.getNewPath());
out.println();
break;
case RENAME:
out.format("R%1$03d\t%2$s\t%3$s", valueOf(ent.getScore()), // //$NON-NLS-1$
ent.getOldPath(), ent.getNewPath());
out.println();
break;
}
}
}
}