/*
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* Copyright 2011 gitblit.com.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.gitblit.utils;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.nio.charset.Charset;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.Date;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.Map.Entry;
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import java.util.zip.ZipEntry;
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import java.util.zip.ZipOutputStream;
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import org.eclipse.jgit.api.Git;
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import org.eclipse.jgit.diff.DiffEntry;
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import org.eclipse.jgit.diff.DiffEntry.ChangeType;
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import org.eclipse.jgit.diff.DiffFormatter;
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import org.eclipse.jgit.diff.RawTextComparator;
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import org.eclipse.jgit.errors.ConfigInvalidException;
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import org.eclipse.jgit.errors.IncorrectObjectTypeException;
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import org.eclipse.jgit.errors.MissingObjectException;
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import org.eclipse.jgit.errors.StopWalkException;
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import org.eclipse.jgit.lib.Constants;
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import org.eclipse.jgit.lib.FileMode;
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import org.eclipse.jgit.lib.ObjectId;
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import org.eclipse.jgit.lib.ObjectLoader;
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import org.eclipse.jgit.lib.PersonIdent;
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import org.eclipse.jgit.lib.Ref;
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import org.eclipse.jgit.lib.Repository;
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import org.eclipse.jgit.lib.RepositoryCache.FileKey;
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import org.eclipse.jgit.lib.StoredConfig;
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import org.eclipse.jgit.revwalk.RevBlob;
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import org.eclipse.jgit.revwalk.RevCommit;
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import org.eclipse.jgit.revwalk.RevObject;
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import org.eclipse.jgit.revwalk.RevSort;
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import org.eclipse.jgit.revwalk.RevTree;
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import org.eclipse.jgit.revwalk.RevWalk;
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import org.eclipse.jgit.revwalk.filter.RevFilter;
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import org.eclipse.jgit.treewalk.TreeWalk;
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import org.eclipse.jgit.treewalk.filter.AndTreeFilter;
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import org.eclipse.jgit.treewalk.filter.OrTreeFilter;
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import org.eclipse.jgit.treewalk.filter.PathFilter;
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import org.eclipse.jgit.treewalk.filter.PathFilterGroup;
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import org.eclipse.jgit.treewalk.filter.PathSuffixFilter;
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import org.eclipse.jgit.treewalk.filter.TreeFilter;
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import org.eclipse.jgit.util.FS;
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import org.eclipse.jgit.util.io.DisabledOutputStream;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import com.gitblit.models.GitNote;
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import com.gitblit.models.PathModel;
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import com.gitblit.models.PathModel.PathChangeModel;
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import com.gitblit.models.RefModel;
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public class JGitUtils {
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static final Logger LOGGER = LoggerFactory.getLogger(JGitUtils.class);
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public static String getDisplayName(PersonIdent person) {
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if (StringUtils.isEmpty(person.getEmailAddress())) {
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return person.getName();
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}
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final StringBuilder r = new StringBuilder();
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r.append(person.getName());
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r.append(" <");
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r.append(person.getEmailAddress());
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r.append('>');
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return r.toString().trim();
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}
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public static Repository createRepository(File repositoriesFolder, String name, boolean bare) {
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Git git = Git.init().setDirectory(new File(repositoriesFolder, name)).setBare(bare).call();
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return git.getRepository();
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}
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public static List<String> getRepositoryList(File repositoriesFolder, boolean exportAll,
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boolean searchSubfolders) {
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List<String> list = new ArrayList<String>();
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if (repositoriesFolder == null || !repositoriesFolder.exists()) {
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return list;
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}
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list.addAll(getRepositoryList(repositoriesFolder.getAbsolutePath(), repositoriesFolder,
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exportAll, searchSubfolders));
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Collections.sort(list);
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return list;
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}
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private static List<String> getRepositoryList(String basePath, File searchFolder,
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boolean exportAll, boolean searchSubfolders) {
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List<String> list = new ArrayList<String>();
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for (File file : searchFolder.listFiles()) {
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if (file.isDirectory()) {
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File gitDir = FileKey.resolve(new File(searchFolder, file.getName()), FS.DETECTED);
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if (gitDir != null) {
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boolean exportRepository = exportAll
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|| new File(gitDir, "git-daemon-export-ok").exists();
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if (!exportRepository) {
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continue;
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}
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// determine repository name relative to base path
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String repository = StringUtils.getRelativePath(basePath,
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file.getAbsolutePath());
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list.add(repository);
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} else if (searchSubfolders) {
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// look for repositories in subfolders
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list.addAll(getRepositoryList(basePath, file, exportAll, searchSubfolders));
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}
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}
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}
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return list;
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}
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public static RevCommit getFirstCommit(Repository r, String branch) {
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if (!hasCommits(r)) {
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return null;
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}
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if (StringUtils.isEmpty(branch)) {
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branch = Constants.HEAD;
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}
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RevCommit commit = null;
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try {
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RevWalk walk = new RevWalk(r);
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walk.sort(RevSort.REVERSE);
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RevCommit head = walk.parseCommit(r.resolve(branch));
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walk.markStart(head);
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commit = walk.next();
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walk.dispose();
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} catch (Throwable t) {
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LOGGER.error("Failed to determine first commit", t);
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}
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return commit;
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}
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public static Date getFirstChange(Repository r, String branch) {
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RevCommit commit = getFirstCommit(r, branch);
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if (commit == null) {
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if (r == null || !r.getDirectory().exists()) {
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return new Date(0);
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}
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// fresh repository
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return new Date(r.getDirectory().lastModified());
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}
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return getCommitDate(commit);
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}
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public static boolean hasCommits(Repository r) {
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if (r != null && r.getDirectory().exists()) {
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return new File(r.getDirectory(), Constants.R_HEADS).list().length > 0;
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}
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return false;
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}
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public static Date getLastChange(Repository r) {
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if (!hasCommits(r)) {
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// null repository
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if (r == null) {
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return new Date(0);
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}
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// fresh repository
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return new Date(r.getDirectory().lastModified());
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}
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RevCommit commit = getCommit(r, Constants.HEAD);
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return getCommitDate(commit);
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}
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public static Date getCommitDate(RevCommit commit) {
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return new Date(commit.getCommitTime() * 1000L);
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}
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public static RevCommit getCommit(Repository r, String objectId) {
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if (!hasCommits(r)) {
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return null;
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}
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RevCommit commit = null;
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try {
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if (StringUtils.isEmpty(objectId)) {
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objectId = Constants.HEAD;
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}
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ObjectId object = r.resolve(objectId);
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RevWalk walk = new RevWalk(r);
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RevCommit rev = walk.parseCommit(object);
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commit = rev;
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walk.dispose();
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} catch (Throwable t) {
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LOGGER.error("Failed to get commit " + objectId, t);
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}
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return commit;
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}
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public static Map<ObjectId, List<RefModel>> getAllRefs(Repository r) {
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List<RefModel> list = getRefs(r, org.eclipse.jgit.lib.RefDatabase.ALL, true, -1);
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Map<ObjectId, List<RefModel>> refs = new HashMap<ObjectId, List<RefModel>>();
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for (RefModel ref : list) {
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ObjectId objectid = ref.getReferencedObjectId();
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if (!refs.containsKey(objectid)) {
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refs.put(objectid, new ArrayList<RefModel>());
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}
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refs.get(objectid).add(ref);
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}
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return refs;
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}
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public static byte[] getByteContent(Repository r, RevTree tree, final String path) {
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RevWalk rw = new RevWalk(r);
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TreeWalk tw = new TreeWalk(r);
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tw.setFilter(PathFilterGroup.createFromStrings(Collections.singleton(path)));
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byte[] content = null;
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try {
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if (tree == null) {
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ObjectId object = r.resolve(Constants.HEAD);
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RevCommit commit = rw.parseCommit(object);
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tree = commit.getTree();
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}
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tw.reset(tree);
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while (tw.next()) {
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if (tw.isSubtree() && !path.equals(tw.getPathString())) {
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tw.enterSubtree();
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continue;
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}
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ObjectId entid = tw.getObjectId(0);
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FileMode entmode = tw.getFileMode(0);
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RevObject ro = rw.lookupAny(entid, entmode.getObjectType());
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rw.parseBody(ro);
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ByteArrayOutputStream os = new ByteArrayOutputStream();
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ObjectLoader ldr = r.open(ro.getId(), Constants.OBJ_BLOB);
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byte[] tmp = new byte[4096];
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InputStream in = ldr.openStream();
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int n;
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while ((n = in.read(tmp)) > 0) {
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os.write(tmp, 0, n);
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}
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in.close();
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content = os.toByteArray();
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}
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} catch (Throwable t) {
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LOGGER.error("Can't find " + path + " in tree " + tree.name(), t);
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} finally {
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rw.dispose();
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tw.release();
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}
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return content;
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}
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public static String getStringContent(Repository r, RevTree tree, String blobPath) {
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byte[] content = getByteContent(r, tree, blobPath);
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if (content == null) {
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return null;
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}
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return new String(content, Charset.forName(Constants.CHARACTER_ENCODING));
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}
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public static byte[] getByteContent(Repository r, String objectId) {
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RevWalk rw = new RevWalk(r);
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byte[] content = null;
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try {
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RevBlob blob = rw.lookupBlob(ObjectId.fromString(objectId));
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rw.parseBody(blob);
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ByteArrayOutputStream os = new ByteArrayOutputStream();
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ObjectLoader ldr = r.open(blob.getId(), Constants.OBJ_BLOB);
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byte[] tmp = new byte[4096];
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InputStream in = ldr.openStream();
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int n;
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while ((n = in.read(tmp)) > 0) {
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os.write(tmp, 0, n);
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}
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in.close();
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content = os.toByteArray();
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} catch (Throwable t) {
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LOGGER.error("Can't find blob " + objectId, t);
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} finally {
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rw.dispose();
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}
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return content;
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}
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public static String getStringContent(Repository r, String objectId) {
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byte[] content = getByteContent(r, objectId);
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if (content == null) {
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return null;
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}
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return new String(content, Charset.forName(Constants.CHARACTER_ENCODING));
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}
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public static List<PathModel> getFilesInPath(Repository r, String basePath, RevCommit commit) {
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List<PathModel> list = new ArrayList<PathModel>();
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if (!hasCommits(r)) {
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return list;
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}
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if (commit == null) {
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commit = getCommit(r, Constants.HEAD);
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}
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final TreeWalk tw = new TreeWalk(r);
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try {
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tw.addTree(commit.getTree());
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if (!StringUtils.isEmpty(basePath)) {
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PathFilter f = PathFilter.create(basePath);
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tw.setFilter(f);
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tw.setRecursive(false);
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boolean foundFolder = false;
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while (tw.next()) {
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if (!foundFolder && tw.isSubtree()) {
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tw.enterSubtree();
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}
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if (tw.getPathString().equals(basePath)) {
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foundFolder = true;
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continue;
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}
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if (foundFolder) {
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list.add(getPathModel(tw, basePath, commit));
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}
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}
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} else {
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tw.setRecursive(false);
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while (tw.next()) {
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list.add(getPathModel(tw, null, commit));
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}
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}
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} catch (IOException e) {
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LOGGER.error("Failed to get files for commit " + commit.getName(), e);
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} finally {
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tw.release();
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}
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Collections.sort(list);
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return list;
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}
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public static List<PathChangeModel> getFilesInCommit(Repository r, RevCommit commit) {
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List<PathChangeModel> list = new ArrayList<PathChangeModel>();
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RevWalk rw = new RevWalk(r);
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TreeWalk tw = new TreeWalk(r);
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try {
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if (commit == null) {
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ObjectId object = r.resolve(Constants.HEAD);
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commit = rw.parseCommit(object);
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}
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RevTree commitTree = commit.getTree();
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tw.reset();
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tw.setRecursive(true);
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if (commit.getParentCount() == 0) {
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tw.addTree(commitTree);
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while (tw.next()) {
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list.add(new PathChangeModel(tw.getPathString(), tw.getPathString(), 0, tw
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.getRawMode(0), commit.getId().getName(), ChangeType.ADD));
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}
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} else {
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RevCommit parent = rw.parseCommit(commit.getParent(0).getId());
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RevTree parentTree = parent.getTree();
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tw.addTree(parentTree);
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tw.addTree(commitTree);
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tw.setFilter(TreeFilter.ANY_DIFF);
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RawTextComparator cmp = RawTextComparator.DEFAULT;
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DiffFormatter df = new DiffFormatter(DisabledOutputStream.INSTANCE);
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df.setRepository(r);
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df.setDiffComparator(cmp);
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df.setDetectRenames(true);
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List<DiffEntry> diffs = df.scan(parentTree, commitTree);
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for (DiffEntry diff : diffs) {
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if (diff.getChangeType().equals(ChangeType.DELETE)) {
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list.add(new PathChangeModel(diff.getOldPath(), diff.getOldPath(), 0, diff
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.getNewMode().getBits(), commit.getId().getName(), diff
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.getChangeType()));
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} else {
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list.add(new PathChangeModel(diff.getNewPath(), diff.getNewPath(), 0, diff
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.getNewMode().getBits(), commit.getId().getName(), diff
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.getChangeType()));
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}
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}
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}
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} catch (Throwable t) {
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LOGGER.error("failed to determine files in commit!", t);
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} finally {
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rw.dispose();
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tw.release();
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}
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return list;
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}
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public static List<PathModel> getDocuments(Repository r, List<String> extensions) {
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List<PathModel> list = new ArrayList<PathModel>();
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RevCommit commit = getCommit(r, Constants.HEAD);
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final TreeWalk tw = new TreeWalk(r);
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try {
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tw.addTree(commit.getTree());
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if (extensions != null && extensions.size() > 0) {
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Collection<TreeFilter> suffixFilters = new ArrayList<TreeFilter>();
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for (String extension : extensions) {
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if (extension.charAt(0) == '.') {
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suffixFilters.add(PathSuffixFilter.create("\\" + extension));
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} else {
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// escape the . since this is a regexp filter
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suffixFilters.add(PathSuffixFilter.create("\\." + extension));
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}
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}
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TreeFilter filter = OrTreeFilter.create(suffixFilters);
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tw.setFilter(filter);
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tw.setRecursive(true);
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}
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while (tw.next()) {
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list.add(getPathModel(tw, null, commit));
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}
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} catch (IOException e) {
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LOGGER.error("Failed to get documents for commit " + commit.getName(), e);
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} finally {
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tw.release();
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}
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Collections.sort(list);
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return list;
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}
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private static PathModel getPathModel(TreeWalk tw, String basePath, RevCommit commit) {
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String name;
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long size = 0;
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if (StringUtils.isEmpty(basePath)) {
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name = tw.getPathString();
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} else {
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name = tw.getPathString().substring(basePath.length() + 1);
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}
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try {
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if (!tw.isSubtree()) {
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size = tw.getObjectReader().getObjectSize(tw.getObjectId(0), Constants.OBJ_BLOB);
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}
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} catch (Throwable t) {
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LOGGER.error("Failed to retrieve blob size", t);
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}
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return new PathModel(name, tw.getPathString(), size, tw.getFileMode(0).getBits(),
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commit.getName());
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}
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public static String getPermissionsFromMode(int mode) {
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if (FileMode.TREE.equals(mode)) {
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return "drwxr-xr-x";
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} else if (FileMode.REGULAR_FILE.equals(mode)) {
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return "-rw-r--r--";
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} else if (FileMode.EXECUTABLE_FILE.equals(mode)) {
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return "-rwxr-xr-x";
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} else if (FileMode.SYMLINK.equals(mode)) {
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// FIXME symlink permissions
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return "symlink";
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} else if (FileMode.GITLINK.equals(mode)) {
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// FIXME gitlink permissions
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return "gitlink";
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}
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// FIXME missing permissions
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return "missing";
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}
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public static List<RevCommit> getRevLog(Repository r, int maxCount) {
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return getRevLog(r, Constants.HEAD, 0, maxCount);
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}
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public static List<RevCommit> getRevLog(Repository r, String objectId, int offset, int maxCount) {
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return getRevLog(r, objectId, null, offset, maxCount);
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}
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public static List<RevCommit> getRevLog(Repository r, String objectId, String path, int offset,
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int maxCount) {
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List<RevCommit> list = new ArrayList<RevCommit>();
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if (!hasCommits(r)) {
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return list;
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}
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try {
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if (StringUtils.isEmpty(objectId)) {
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objectId = Constants.HEAD;
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}
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RevWalk rw = new RevWalk(r);
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ObjectId object = r.resolve(objectId);
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rw.markStart(rw.parseCommit(object));
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if (!StringUtils.isEmpty(path)) {
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TreeFilter filter = AndTreeFilter.create(
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PathFilterGroup.createFromStrings(Collections.singleton(path)),
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TreeFilter.ANY_DIFF);
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rw.setTreeFilter(filter);
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}
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Iterable<RevCommit> revlog = rw;
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if (offset > 0) {
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int count = 0;
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for (RevCommit rev : revlog) {
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count++;
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if (count > offset) {
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list.add(rev);
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if (maxCount > 0 && list.size() == maxCount) {
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break;
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}
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}
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}
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} else {
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for (RevCommit rev : revlog) {
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list.add(rev);
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if (maxCount > 0 && list.size() == maxCount) {
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break;
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}
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}
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}
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rw.dispose();
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} catch (Throwable t) {
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LOGGER.error("Failed to get revlog", t);
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}
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return list;
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}
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public static enum SearchType {
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AUTHOR, COMMITTER, COMMIT;
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public static SearchType forName(String name) {
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for (SearchType type : values()) {
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if (type.name().equalsIgnoreCase(name)) {
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return type;
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}
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}
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return COMMIT;
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}
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@Override
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public String toString() {
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return name().toLowerCase();
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}
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}
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public static List<RevCommit> searchRevlogs(Repository r, String objectId, String value,
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final SearchType type, int offset, int maxCount) {
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final String lcValue = value.toLowerCase();
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List<RevCommit> list = new ArrayList<RevCommit>();
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if (!hasCommits(r)) {
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return list;
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}
|
try {
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if (StringUtils.isEmpty(objectId)) {
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objectId = Constants.HEAD;
|
}
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RevWalk rw = new RevWalk(r);
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rw.setRevFilter(new RevFilter() {
|
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@Override
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public RevFilter clone() {
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return this;
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}
|
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@Override
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public boolean include(RevWalk walker, RevCommit commit) throws StopWalkException,
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MissingObjectException, IncorrectObjectTypeException, IOException {
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boolean include = false;
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switch (type) {
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case AUTHOR:
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include = (commit.getAuthorIdent().getName().toLowerCase().indexOf(lcValue) > -1)
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|| (commit.getAuthorIdent().getEmailAddress().toLowerCase()
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.indexOf(lcValue) > -1);
|
break;
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case COMMITTER:
|
include = (commit.getCommitterIdent().getName().toLowerCase()
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.indexOf(lcValue) > -1)
|
|| (commit.getCommitterIdent().getEmailAddress().toLowerCase()
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.indexOf(lcValue) > -1);
|
break;
|
case COMMIT:
|
include = commit.getFullMessage().toLowerCase().indexOf(lcValue) > -1;
|
break;
|
}
|
return include;
|
}
|
|
});
|
ObjectId object = r.resolve(objectId);
|
rw.markStart(rw.parseCommit(object));
|
Iterable<RevCommit> revlog = rw;
|
if (offset > 0) {
|
int count = 0;
|
for (RevCommit rev : revlog) {
|
count++;
|
if (count > offset) {
|
list.add(rev);
|
if (maxCount > 0 && list.size() == maxCount) {
|
break;
|
}
|
}
|
}
|
} else {
|
for (RevCommit rev : revlog) {
|
list.add(rev);
|
if (maxCount > 0 && list.size() == maxCount) {
|
break;
|
}
|
}
|
}
|
rw.dispose();
|
} catch (Throwable t) {
|
LOGGER.error("Failed to search revlogs", t);
|
}
|
return list;
|
}
|
|
public static List<RefModel> getTags(Repository r, boolean fullName, int maxCount) {
|
return getRefs(r, Constants.R_TAGS, fullName, maxCount);
|
}
|
|
public static List<RefModel> getLocalBranches(Repository r, boolean fullName, int maxCount) {
|
return getRefs(r, Constants.R_HEADS, fullName, maxCount);
|
}
|
|
public static List<RefModel> getRemoteBranches(Repository r, boolean fullName, int maxCount) {
|
return getRefs(r, Constants.R_REMOTES, fullName, maxCount);
|
}
|
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public static List<RefModel> getNotesRefs(Repository r, boolean fullName, int maxCount) {
|
return getRefs(r, Constants.R_NOTES, fullName, maxCount);
|
}
|
|
private static List<RefModel> getRefs(Repository r, String refs, boolean fullName, int maxCount) {
|
List<RefModel> list = new ArrayList<RefModel>();
|
try {
|
Map<String, Ref> map = r.getRefDatabase().getRefs(refs);
|
RevWalk rw = new RevWalk(r);
|
for (Entry<String, Ref> entry : map.entrySet()) {
|
Ref ref = entry.getValue();
|
RevObject object = rw.parseAny(ref.getObjectId());
|
String name = entry.getKey();
|
if (fullName && !StringUtils.isEmpty(refs)) {
|
name = refs + name;
|
}
|
list.add(new RefModel(name, ref, object));
|
}
|
rw.dispose();
|
Collections.sort(list);
|
Collections.reverse(list);
|
if (maxCount > 0 && list.size() > maxCount) {
|
list = new ArrayList<RefModel>(list.subList(0, maxCount));
|
}
|
} catch (IOException e) {
|
LOGGER.error("Failed to retrieve " + refs, e);
|
}
|
return list;
|
}
|
|
public static List<GitNote> getNotesOnCommit(Repository repository, RevCommit commit) {
|
List<GitNote> list = new ArrayList<GitNote>();
|
List<RefModel> notesRefs = getNotesRefs(repository, true, -1);
|
for (RefModel notesRef : notesRefs) {
|
RevTree notesTree = JGitUtils.getCommit(repository, notesRef.getName()).getTree();
|
StringBuilder sb = new StringBuilder(commit.getName());
|
sb.insert(2, '/');
|
String notePath = sb.toString();
|
String text = getStringContent(repository, notesTree, notePath);
|
if (!StringUtils.isEmpty(text)) {
|
List<RevCommit> history = getRevLog(repository, notesRef.getName(), notePath, 0, -1);
|
RefModel noteRef = new RefModel(notesRef.displayName, null, history.get(history
|
.size() - 1));
|
GitNote gitNote = new GitNote(noteRef, text);
|
list.add(gitNote);
|
}
|
}
|
return list;
|
}
|
|
public static StoredConfig readConfig(Repository r) {
|
StoredConfig c = r.getConfig();
|
try {
|
c.load();
|
} catch (ConfigInvalidException cex) {
|
LOGGER.error("Repository configuration is invalid!", cex);
|
} catch (IOException cex) {
|
LOGGER.error("Could not open repository configuration!", cex);
|
}
|
return c;
|
}
|
|
public static boolean zip(Repository r, String basePath, String objectId, OutputStream os)
|
throws Exception {
|
RevCommit commit = getCommit(r, objectId);
|
if (commit == null) {
|
return false;
|
}
|
boolean success = false;
|
RevWalk rw = new RevWalk(r);
|
TreeWalk tw = new TreeWalk(r);
|
try {
|
tw.addTree(commit.getTree());
|
ZipOutputStream zos = new ZipOutputStream(os);
|
zos.setComment("Generated by Git:Blit");
|
if (!StringUtils.isEmpty(basePath)) {
|
PathFilter f = PathFilter.create(basePath);
|
tw.setFilter(f);
|
}
|
tw.setRecursive(true);
|
while (tw.next()) {
|
ZipEntry entry = new ZipEntry(tw.getPathString());
|
entry.setSize(tw.getObjectReader().getObjectSize(tw.getObjectId(0),
|
Constants.OBJ_BLOB));
|
entry.setComment(commit.getName());
|
zos.putNextEntry(entry);
|
|
ObjectId entid = tw.getObjectId(0);
|
FileMode entmode = tw.getFileMode(0);
|
RevBlob blob = (RevBlob) rw.lookupAny(entid, entmode.getObjectType());
|
rw.parseBody(blob);
|
|
ObjectLoader ldr = r.open(blob.getId(), Constants.OBJ_BLOB);
|
byte[] tmp = new byte[4096];
|
InputStream in = ldr.openStream();
|
int n;
|
while ((n = in.read(tmp)) > 0) {
|
zos.write(tmp, 0, n);
|
}
|
in.close();
|
}
|
zos.finish();
|
success = true;
|
} catch (IOException e) {
|
LOGGER.error("Failed to zip files from commit " + commit.getName(), e);
|
} finally {
|
tw.release();
|
rw.dispose();
|
}
|
return success;
|
}
|
}
|
