diff options
Diffstat (limited to 'src/main/java/com/gitblit/utils/JGitUtils.java')
| -rw-r--r-- | src/main/java/com/gitblit/utils/JGitUtils.java | 1775 |
1 files changed, 1775 insertions, 0 deletions
diff --git a/src/main/java/com/gitblit/utils/JGitUtils.java b/src/main/java/com/gitblit/utils/JGitUtils.java new file mode 100644 index 00000000..1f2ae943 --- /dev/null +++ b/src/main/java/com/gitblit/utils/JGitUtils.java @@ -0,0 +1,1775 @@ +/*
+ * Copyright 2011 gitblit.com.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.gitblit.utils;
+
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.text.MessageFormat;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.regex.Pattern;
+
+import org.eclipse.jgit.api.CloneCommand;
+import org.eclipse.jgit.api.FetchCommand;
+import org.eclipse.jgit.api.Git;
+import org.eclipse.jgit.api.errors.GitAPIException;
+import org.eclipse.jgit.diff.DiffEntry;
+import org.eclipse.jgit.diff.DiffEntry.ChangeType;
+import org.eclipse.jgit.diff.DiffFormatter;
+import org.eclipse.jgit.diff.RawTextComparator;
+import org.eclipse.jgit.errors.ConfigInvalidException;
+import org.eclipse.jgit.errors.IncorrectObjectTypeException;
+import org.eclipse.jgit.errors.MissingObjectException;
+import org.eclipse.jgit.errors.StopWalkException;
+import org.eclipse.jgit.lib.BlobBasedConfig;
+import org.eclipse.jgit.lib.CommitBuilder;
+import org.eclipse.jgit.lib.Constants;
+import org.eclipse.jgit.lib.FileMode;
+import org.eclipse.jgit.lib.ObjectId;
+import org.eclipse.jgit.lib.ObjectInserter;
+import org.eclipse.jgit.lib.ObjectLoader;
+import org.eclipse.jgit.lib.PersonIdent;
+import org.eclipse.jgit.lib.Ref;
+import org.eclipse.jgit.lib.RefUpdate;
+import org.eclipse.jgit.lib.RefUpdate.Result;
+import org.eclipse.jgit.lib.Repository;
+import org.eclipse.jgit.lib.RepositoryCache.FileKey;
+import org.eclipse.jgit.lib.TreeFormatter;
+import org.eclipse.jgit.revwalk.RevBlob;
+import org.eclipse.jgit.revwalk.RevCommit;
+import org.eclipse.jgit.revwalk.RevObject;
+import org.eclipse.jgit.revwalk.RevSort;
+import org.eclipse.jgit.revwalk.RevTree;
+import org.eclipse.jgit.revwalk.RevWalk;
+import org.eclipse.jgit.revwalk.filter.CommitTimeRevFilter;
+import org.eclipse.jgit.revwalk.filter.RevFilter;
+import org.eclipse.jgit.storage.file.FileRepository;
+import org.eclipse.jgit.transport.CredentialsProvider;
+import org.eclipse.jgit.transport.FetchResult;
+import org.eclipse.jgit.transport.RefSpec;
+import org.eclipse.jgit.treewalk.TreeWalk;
+import org.eclipse.jgit.treewalk.filter.AndTreeFilter;
+import org.eclipse.jgit.treewalk.filter.OrTreeFilter;
+import org.eclipse.jgit.treewalk.filter.PathFilter;
+import org.eclipse.jgit.treewalk.filter.PathFilterGroup;
+import org.eclipse.jgit.treewalk.filter.PathSuffixFilter;
+import org.eclipse.jgit.treewalk.filter.TreeFilter;
+import org.eclipse.jgit.util.FS;
+import org.eclipse.jgit.util.io.DisabledOutputStream;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.gitblit.models.GitNote;
+import com.gitblit.models.PathModel;
+import com.gitblit.models.PathModel.PathChangeModel;
+import com.gitblit.models.RefModel;
+import com.gitblit.models.SubmoduleModel;
+
+/**
+ * Collection of static methods for retrieving information from a repository.
+ *
+ * @author James Moger
+ *
+ */
+public class JGitUtils {
+
+ static final Logger LOGGER = LoggerFactory.getLogger(JGitUtils.class);
+
+ /**
+ * Log an error message and exception.
+ *
+ * @param t
+ * @param repository
+ * if repository is not null it MUST be the {0} parameter in the
+ * pattern.
+ * @param pattern
+ * @param objects
+ */
+ private static void error(Throwable t, Repository repository, String pattern, Object... objects) {
+ List<Object> parameters = new ArrayList<Object>();
+ if (objects != null && objects.length > 0) {
+ for (Object o : objects) {
+ parameters.add(o);
+ }
+ }
+ if (repository != null) {
+ parameters.add(0, repository.getDirectory().getAbsolutePath());
+ }
+ LOGGER.error(MessageFormat.format(pattern, parameters.toArray()), t);
+ }
+
+ /**
+ * Returns the displayable name of the person in the form "Real Name <email
+ * address>". If the email address is empty, just "Real Name" is returned.
+ *
+ * @param person
+ * @return "Real Name <email address>" or "Real Name"
+ */
+ public static String getDisplayName(PersonIdent person) {
+ if (StringUtils.isEmpty(person.getEmailAddress())) {
+ return person.getName();
+ }
+ final StringBuilder r = new StringBuilder();
+ r.append(person.getName());
+ r.append(" <");
+ r.append(person.getEmailAddress());
+ r.append('>');
+ return r.toString().trim();
+ }
+
+ /**
+ * Encapsulates the result of cloning or pulling from a repository.
+ */
+ public static class CloneResult {
+ public String name;
+ public FetchResult fetchResult;
+ public boolean createdRepository;
+ }
+
+ /**
+ * Clone or Fetch a repository. If the local repository does not exist,
+ * clone is called. If the repository does exist, fetch is called. By
+ * default the clone/fetch retrieves the remote heads, tags, and notes.
+ *
+ * @param repositoriesFolder
+ * @param name
+ * @param fromUrl
+ * @return CloneResult
+ * @throws Exception
+ */
+ public static CloneResult cloneRepository(File repositoriesFolder, String name, String fromUrl)
+ throws Exception {
+ return cloneRepository(repositoriesFolder, name, fromUrl, true, null);
+ }
+
+ /**
+ * Clone or Fetch a repository. If the local repository does not exist,
+ * clone is called. If the repository does exist, fetch is called. By
+ * default the clone/fetch retrieves the remote heads, tags, and notes.
+ *
+ * @param repositoriesFolder
+ * @param name
+ * @param fromUrl
+ * @param bare
+ * @param credentialsProvider
+ * @return CloneResult
+ * @throws Exception
+ */
+ public static CloneResult cloneRepository(File repositoriesFolder, String name, String fromUrl,
+ boolean bare, CredentialsProvider credentialsProvider) throws Exception {
+ CloneResult result = new CloneResult();
+ if (bare) {
+ // bare repository, ensure .git suffix
+ if (!name.toLowerCase().endsWith(Constants.DOT_GIT_EXT)) {
+ name += Constants.DOT_GIT_EXT;
+ }
+ } else {
+ // normal repository, strip .git suffix
+ if (name.toLowerCase().endsWith(Constants.DOT_GIT_EXT)) {
+ name = name.substring(0, name.indexOf(Constants.DOT_GIT_EXT));
+ }
+ }
+ result.name = name;
+
+ File folder = new File(repositoriesFolder, name);
+ if (folder.exists()) {
+ File gitDir = FileKey.resolve(new File(repositoriesFolder, name), FS.DETECTED);
+ FileRepository repository = new FileRepository(gitDir);
+ result.fetchResult = fetchRepository(credentialsProvider, repository);
+ repository.close();
+ } else {
+ CloneCommand clone = new CloneCommand();
+ clone.setBare(bare);
+ clone.setCloneAllBranches(true);
+ clone.setURI(fromUrl);
+ clone.setDirectory(folder);
+ if (credentialsProvider != null) {
+ clone.setCredentialsProvider(credentialsProvider);
+ }
+ Repository repository = clone.call().getRepository();
+
+ // Now we have to fetch because CloneCommand doesn't fetch
+ // refs/notes nor does it allow manual RefSpec.
+ result.createdRepository = true;
+ result.fetchResult = fetchRepository(credentialsProvider, repository);
+ repository.close();
+ }
+ return result;
+ }
+
+ /**
+ * Fetch updates from the remote repository. If refSpecs is unspecifed,
+ * remote heads, tags, and notes are retrieved.
+ *
+ * @param credentialsProvider
+ * @param repository
+ * @param refSpecs
+ * @return FetchResult
+ * @throws Exception
+ */
+ public static FetchResult fetchRepository(CredentialsProvider credentialsProvider,
+ Repository repository, RefSpec... refSpecs) throws Exception {
+ Git git = new Git(repository);
+ FetchCommand fetch = git.fetch();
+ List<RefSpec> specs = new ArrayList<RefSpec>();
+ if (refSpecs == null || refSpecs.length == 0) {
+ specs.add(new RefSpec("+refs/heads/*:refs/remotes/origin/*"));
+ specs.add(new RefSpec("+refs/tags/*:refs/tags/*"));
+ specs.add(new RefSpec("+refs/notes/*:refs/notes/*"));
+ } else {
+ specs.addAll(Arrays.asList(refSpecs));
+ }
+ if (credentialsProvider != null) {
+ fetch.setCredentialsProvider(credentialsProvider);
+ }
+ fetch.setRefSpecs(specs);
+ FetchResult fetchRes = fetch.call();
+ return fetchRes;
+ }
+
+ /**
+ * Creates a bare repository.
+ *
+ * @param repositoriesFolder
+ * @param name
+ * @return Repository
+ */
+ public static Repository createRepository(File repositoriesFolder, String name) {
+ try {
+ Git git = Git.init().setDirectory(new File(repositoriesFolder, name)).setBare(true).call();
+ return git.getRepository();
+ } catch (GitAPIException e) {
+ throw new RuntimeException(e);
+ }
+ }
+
+ /**
+ * Returns a list of repository names in the specified folder.
+ *
+ * @param repositoriesFolder
+ * @param onlyBare
+ * if true, only bare repositories repositories are listed. If
+ * false all repositories are included.
+ * @param searchSubfolders
+ * recurse into subfolders to find grouped repositories
+ * @param depth
+ * optional recursion depth, -1 = infinite recursion
+ * @param exclusions
+ * list of regex exclusions for matching to folder names
+ * @return list of repository names
+ */
+ public static List<String> getRepositoryList(File repositoriesFolder, boolean onlyBare,
+ boolean searchSubfolders, int depth, List<String> exclusions) {
+ List<String> list = new ArrayList<String>();
+ if (repositoriesFolder == null || !repositoriesFolder.exists()) {
+ return list;
+ }
+ List<Pattern> patterns = new ArrayList<Pattern>();
+ if (!ArrayUtils.isEmpty(exclusions)) {
+ for (String regex : exclusions) {
+ patterns.add(Pattern.compile(regex));
+ }
+ }
+ list.addAll(getRepositoryList(repositoriesFolder.getAbsolutePath(), repositoriesFolder,
+ onlyBare, searchSubfolders, depth, patterns));
+ StringUtils.sortRepositorynames(list);
+ return list;
+ }
+
+ /**
+ * Recursive function to find git repositories.
+ *
+ * @param basePath
+ * basePath is stripped from the repository name as repositories
+ * are relative to this path
+ * @param searchFolder
+ * @param onlyBare
+ * if true only bare repositories will be listed. if false all
+ * repositories are included.
+ * @param searchSubfolders
+ * recurse into subfolders to find grouped repositories
+ * @param depth
+ * recursion depth, -1 = infinite recursion
+ * @param patterns
+ * list of regex patterns for matching to folder names
+ * @return
+ */
+ private static List<String> getRepositoryList(String basePath, File searchFolder,
+ boolean onlyBare, boolean searchSubfolders, int depth, List<Pattern> patterns) {
+ File baseFile = new File(basePath);
+ List<String> list = new ArrayList<String>();
+ if (depth == 0) {
+ return list;
+ }
+
+ int nextDepth = (depth == -1) ? -1 : depth - 1;
+ for (File file : searchFolder.listFiles()) {
+ if (file.isDirectory()) {
+ boolean exclude = false;
+ for (Pattern pattern : patterns) {
+ String path = FileUtils.getRelativePath(baseFile, file).replace('\\', '/');
+ if (pattern.matcher(path).matches()) {
+ LOGGER.debug(MessageFormat.format("excluding {0} because of rule {1}", path, pattern.pattern()));
+ exclude = true;
+ break;
+ }
+ }
+ if (exclude) {
+ // skip to next file
+ continue;
+ }
+
+ File gitDir = FileKey.resolve(new File(searchFolder, file.getName()), FS.DETECTED);
+ if (gitDir != null) {
+ if (onlyBare && gitDir.getName().equals(".git")) {
+ continue;
+ }
+ if (gitDir.equals(file) || gitDir.getParentFile().equals(file)) {
+ // determine repository name relative to base path
+ String repository = FileUtils.getRelativePath(baseFile, file);
+ list.add(repository);
+ } else if (searchSubfolders && file.canRead()) {
+ // look for repositories in subfolders
+ list.addAll(getRepositoryList(basePath, file, onlyBare, searchSubfolders,
+ nextDepth, patterns));
+ }
+ } else if (searchSubfolders && file.canRead()) {
+ // look for repositories in subfolders
+ list.addAll(getRepositoryList(basePath, file, onlyBare, searchSubfolders,
+ nextDepth, patterns));
+ }
+ }
+ }
+ return list;
+ }
+
+ /**
+ * Returns the first commit on a branch. If the repository does not exist or
+ * is empty, null is returned.
+ *
+ * @param repository
+ * @param branch
+ * if unspecified, HEAD is assumed.
+ * @return RevCommit
+ */
+ public static RevCommit getFirstCommit(Repository repository, String branch) {
+ if (!hasCommits(repository)) {
+ return null;
+ }
+ RevCommit commit = null;
+ try {
+ // resolve branch
+ ObjectId branchObject;
+ if (StringUtils.isEmpty(branch)) {
+ branchObject = getDefaultBranch(repository);
+ } else {
+ branchObject = repository.resolve(branch);
+ }
+
+ RevWalk walk = new RevWalk(repository);
+ walk.sort(RevSort.REVERSE);
+ RevCommit head = walk.parseCommit(branchObject);
+ walk.markStart(head);
+ commit = walk.next();
+ walk.dispose();
+ } catch (Throwable t) {
+ error(t, repository, "{0} failed to determine first commit");
+ }
+ return commit;
+ }
+
+ /**
+ * Returns the date of the first commit on a branch. If the repository does
+ * not exist, Date(0) is returned. If the repository does exist bit is
+ * empty, the last modified date of the repository folder is returned.
+ *
+ * @param repository
+ * @param branch
+ * if unspecified, HEAD is assumed.
+ * @return Date of the first commit on a branch
+ */
+ public static Date getFirstChange(Repository repository, String branch) {
+ RevCommit commit = getFirstCommit(repository, branch);
+ if (commit == null) {
+ if (repository == null || !repository.getDirectory().exists()) {
+ return new Date(0);
+ }
+ // fresh repository
+ return new Date(repository.getDirectory().lastModified());
+ }
+ return getCommitDate(commit);
+ }
+
+ /**
+ * Determine if a repository has any commits. This is determined by checking
+ * the for loose and packed objects.
+ *
+ * @param repository
+ * @return true if the repository has commits
+ */
+ public static boolean hasCommits(Repository repository) {
+ if (repository != null && repository.getDirectory().exists()) {
+ return (new File(repository.getDirectory(), "objects").list().length > 2)
+ || (new File(repository.getDirectory(), "objects/pack").list().length > 0);
+ }
+ return false;
+ }
+
+ /**
+ * Returns the date of the most recent commit on a branch. If the repository
+ * does not exist Date(0) is returned. If it does exist but is empty, the
+ * last modified date of the repository folder is returned.
+ *
+ * @param repository
+ * @return
+ */
+ public static Date getLastChange(Repository repository) {
+ if (!hasCommits(repository)) {
+ // null repository
+ if (repository == null) {
+ return new Date(0);
+ }
+ // fresh repository
+ return new Date(repository.getDirectory().lastModified());
+ }
+
+ List<RefModel> branchModels = getLocalBranches(repository, true, -1);
+ if (branchModels.size() > 0) {
+ // find most recent branch update
+ Date lastChange = new Date(0);
+ for (RefModel branchModel : branchModels) {
+ if (branchModel.getDate().after(lastChange)) {
+ lastChange = branchModel.getDate();
+ }
+ }
+ return lastChange;
+ }
+
+ // default to the repository folder modification date
+ return new Date(repository.getDirectory().lastModified());
+ }
+
+ /**
+ * Retrieves a Java Date from a Git commit.
+ *
+ * @param commit
+ * @return date of the commit or Date(0) if the commit is null
+ */
+ public static Date getCommitDate(RevCommit commit) {
+ if (commit == null) {
+ return new Date(0);
+ }
+ return new Date(commit.getCommitTime() * 1000L);
+ }
+
+ /**
+ * Retrieves a Java Date from a Git commit.
+ *
+ * @param commit
+ * @return date of the commit or Date(0) if the commit is null
+ */
+ public static Date getAuthorDate(RevCommit commit) {
+ if (commit == null) {
+ return new Date(0);
+ }
+ return commit.getAuthorIdent().getWhen();
+ }
+
+ /**
+ * Returns the specified commit from the repository. If the repository does
+ * not exist or is empty, null is returned.
+ *
+ * @param repository
+ * @param objectId
+ * if unspecified, HEAD is assumed.
+ * @return RevCommit
+ */
+ public static RevCommit getCommit(Repository repository, String objectId) {
+ if (!hasCommits(repository)) {
+ return null;
+ }
+ RevCommit commit = null;
+ try {
+ // resolve object id
+ ObjectId branchObject;
+ if (StringUtils.isEmpty(objectId)) {
+ branchObject = getDefaultBranch(repository);
+ } else {
+ branchObject = repository.resolve(objectId);
+ }
+ RevWalk walk = new RevWalk(repository);
+ RevCommit rev = walk.parseCommit(branchObject);
+ commit = rev;
+ walk.dispose();
+ } catch (Throwable t) {
+ error(t, repository, "{0} failed to get commit {1}", objectId);
+ }
+ return commit;
+ }
+
+ /**
+ * Retrieves the raw byte content of a file in the specified tree.
+ *
+ * @param repository
+ * @param tree
+ * if null, the RevTree from HEAD is assumed.
+ * @param path
+ * @return content as a byte []
+ */
+ public static byte[] getByteContent(Repository repository, RevTree tree, final String path, boolean throwError) {
+ RevWalk rw = new RevWalk(repository);
+ TreeWalk tw = new TreeWalk(repository);
+ tw.setFilter(PathFilterGroup.createFromStrings(Collections.singleton(path)));
+ byte[] content = null;
+ try {
+ if (tree == null) {
+ ObjectId object = getDefaultBranch(repository);
+ RevCommit commit = rw.parseCommit(object);
+ tree = commit.getTree();
+ }
+ tw.reset(tree);
+ while (tw.next()) {
+ if (tw.isSubtree() && !path.equals(tw.getPathString())) {
+ tw.enterSubtree();
+ continue;
+ }
+ ObjectId entid = tw.getObjectId(0);
+ FileMode entmode = tw.getFileMode(0);
+ if (entmode != FileMode.GITLINK) {
+ RevObject ro = rw.lookupAny(entid, entmode.getObjectType());
+ rw.parseBody(ro);
+ ByteArrayOutputStream os = new ByteArrayOutputStream();
+ ObjectLoader ldr = repository.open(ro.getId(), Constants.OBJ_BLOB);
+ byte[] tmp = new byte[4096];
+ InputStream in = ldr.openStream();
+ int n;
+ while ((n = in.read(tmp)) > 0) {
+ os.write(tmp, 0, n);
+ }
+ in.close();
+ content = os.toByteArray();
+ }
+ }
+ } catch (Throwable t) {
+ if (throwError) {
+ error(t, repository, "{0} can't find {1} in tree {2}", path, tree.name());
+ }
+ } finally {
+ rw.dispose();
+ tw.release();
+ }
+ return content;
+ }
+
+ /**
+ * Returns the UTF-8 string content of a file in the specified tree.
+ *
+ * @param repository
+ * @param tree
+ * if null, the RevTree from HEAD is assumed.
+ * @param blobPath
+ * @param charsets optional
+ * @return UTF-8 string content
+ */
+ public static String getStringContent(Repository repository, RevTree tree, String blobPath, String... charsets) {
+ byte[] content = getByteContent(repository, tree, blobPath, true);
+ if (content == null) {
+ return null;
+ }
+ return StringUtils.decodeString(content, charsets);
+ }
+
+ /**
+ * Gets the raw byte content of the specified blob object.
+ *
+ * @param repository
+ * @param objectId
+ * @return byte [] blob content
+ */
+ public static byte[] getByteContent(Repository repository, String objectId) {
+ RevWalk rw = new RevWalk(repository);
+ byte[] content = null;
+ try {
+ RevBlob blob = rw.lookupBlob(ObjectId.fromString(objectId));
+ rw.parseBody(blob);
+ ByteArrayOutputStream os = new ByteArrayOutputStream();
+ ObjectLoader ldr = repository.open(blob.getId(), Constants.OBJ_BLOB);
+ byte[] tmp = new byte[4096];
+ InputStream in = ldr.openStream();
+ int n;
+ while ((n = in.read(tmp)) > 0) {
+ os.write(tmp, 0, n);
+ }
+ in.close();
+ content = os.toByteArray();
+ } catch (Throwable t) {
+ error(t, repository, "{0} can't find blob {1}", objectId);
+ } finally {
+ rw.dispose();
+ }
+ return content;
+ }
+
+ /**
+ * Gets the UTF-8 string content of the blob specified by objectId.
+ *
+ * @param repository
+ * @param objectId
+ * @param charsets optional
+ * @return UTF-8 string content
+ */
+ public static String getStringContent(Repository repository, String objectId, String... charsets) {
+ byte[] content = getByteContent(repository, objectId);
+ if (content == null) {
+ return null;
+ }
+ return StringUtils.decodeString(content, charsets);
+ }
+
+ /**
+ * Returns the list of files in the specified folder at the specified
+ * commit. If the repository does not exist or is empty, an empty list is
+ * returned.
+ *
+ * @param repository
+ * @param path
+ * if unspecified, root folder is assumed.
+ * @param commit
+ * if null, HEAD is assumed.
+ * @return list of files in specified path
+ */
+ public static List<PathModel> getFilesInPath(Repository repository, String path,
+ RevCommit commit) {
+ List<PathModel> list = new ArrayList<PathModel>();
+ if (!hasCommits(repository)) {
+ return list;
+ }
+ if (commit == null) {
+ commit = getCommit(repository, null);
+ }
+ final TreeWalk tw = new TreeWalk(repository);
+ try {
+ tw.addTree(commit.getTree());
+ if (!StringUtils.isEmpty(path)) {
+ PathFilter f = PathFilter.create(path);
+ tw.setFilter(f);
+ tw.setRecursive(false);
+ boolean foundFolder = false;
+ while (tw.next()) {
+ if (!foundFolder && tw.isSubtree()) {
+ tw.enterSubtree();
+ }
+ if (tw.getPathString().equals(path)) {
+ foundFolder = true;
+ continue;
+ }
+ if (foundFolder) {
+ list.add(getPathModel(tw, path, commit));
+ }
+ }
+ } else {
+ tw.setRecursive(false);
+ while (tw.next()) {
+ list.add(getPathModel(tw, null, commit));
+ }
+ }
+ } catch (IOException e) {
+ error(e, repository, "{0} failed to get files for commit {1}", commit.getName());
+ } finally {
+ tw.release();
+ }
+ Collections.sort(list);
+ return list;
+ }
+
+ /**
+ * Returns the list of files changed in a specified commit. If the
+ * repository does not exist or is empty, an empty list is returned.
+ *
+ * @param repository
+ * @param commit
+ * if null, HEAD is assumed.
+ * @return list of files changed in a commit
+ */
+ public static List<PathChangeModel> getFilesInCommit(Repository repository, RevCommit commit) {
+ List<PathChangeModel> list = new ArrayList<PathChangeModel>();
+ if (!hasCommits(repository)) {
+ return list;
+ }
+ RevWalk rw = new RevWalk(repository);
+ try {
+ if (commit == null) {
+ ObjectId object = getDefaultBranch(repository);
+ commit = rw.parseCommit(object);
+ }
+
+ if (commit.getParentCount() == 0) {
+ TreeWalk tw = new TreeWalk(repository);
+ tw.reset();
+ tw.setRecursive(true);
+ tw.addTree(commit.getTree());
+ while (tw.next()) {
+ list.add(new PathChangeModel(tw.getPathString(), tw.getPathString(), 0, tw
+ .getRawMode(0), tw.getObjectId(0).getName(), commit.getId().getName(),
+ ChangeType.ADD));
+ }
+ tw.release();
+ } else {
+ RevCommit parent = rw.parseCommit(commit.getParent(0).getId());
+ DiffFormatter df = new DiffFormatter(DisabledOutputStream.INSTANCE);
+ df.setRepository(repository);
+ df.setDiffComparator(RawTextComparator.DEFAULT);
+ df.setDetectRenames(true);
+ List<DiffEntry> diffs = df.scan(parent.getTree(), commit.getTree());
+ for (DiffEntry diff : diffs) {
+ String objectId = diff.getNewId().name();
+ if (diff.getChangeType().equals(ChangeType.DELETE)) {
+ list.add(new PathChangeModel(diff.getOldPath(), diff.getOldPath(), 0, diff
+ .getNewMode().getBits(), objectId, commit.getId().getName(), diff
+ .getChangeType()));
+ } else if (diff.getChangeType().equals(ChangeType.RENAME)) {
+ list.add(new PathChangeModel(diff.getOldPath(), diff.getNewPath(), 0, diff
+ .getNewMode().getBits(), objectId, commit.getId().getName(), diff
+ .getChangeType()));
+ } else {
+ list.add(new PathChangeModel(diff.getNewPath(), diff.getNewPath(), 0, diff
+ .getNewMode().getBits(), objectId, commit.getId().getName(), diff
+ .getChangeType()));
+ }
+ }
+ }
+ } catch (Throwable t) {
+ error(t, repository, "{0} failed to determine files in commit!");
+ } finally {
+ rw.dispose();
+ }
+ return list;
+ }
+
+ /**
+ * Returns the list of files in the repository on the default branch that
+ * match one of the specified extensions. This is a CASE-SENSITIVE search.
+ * If the repository does not exist or is empty, an empty list is returned.
+ *
+ * @param repository
+ * @param extensions
+ * @return list of files in repository with a matching extension
+ */
+ public static List<PathModel> getDocuments(Repository repository, List<String> extensions) {
+ return getDocuments(repository, extensions, null);
+ }
+
+ /**
+ * Returns the list of files in the repository in the specified commit that
+ * match one of the specified extensions. This is a CASE-SENSITIVE search.
+ * If the repository does not exist or is empty, an empty list is returned.
+ *
+ * @param repository
+ * @param extensions
+ * @param objectId
+ * @return list of files in repository with a matching extension
+ */
+ public static List<PathModel> getDocuments(Repository repository, List<String> extensions,
+ String objectId) {
+ List<PathModel> list = new ArrayList<PathModel>();
+ if (!hasCommits(repository)) {
+ return list;
+ }
+ RevCommit commit = getCommit(repository, objectId);
+ final TreeWalk tw = new TreeWalk(repository);
+ try {
+ tw.addTree(commit.getTree());
+ if (extensions != null && extensions.size() > 0) {
+ List<TreeFilter> suffixFilters = new ArrayList<TreeFilter>();
+ for (String extension : extensions) {
+ if (extension.charAt(0) == '.') {
+ suffixFilters.add(PathSuffixFilter.create("\\" + extension));
+ } else {
+ // escape the . since this is a regexp filter
+ suffixFilters.add(PathSuffixFilter.create("\\." + extension));
+ }
+ }
+ TreeFilter filter;
+ if (suffixFilters.size() == 1) {
+ filter = suffixFilters.get(0);
+ } else {
+ filter = OrTreeFilter.create(suffixFilters);
+ }
+ tw.setFilter(filter);
+ tw.setRecursive(true);
+ }
+ while (tw.next()) {
+ list.add(getPathModel(tw, null, commit));
+ }
+ } catch (IOException e) {
+ error(e, repository, "{0} failed to get documents for commit {1}", commit.getName());
+ } finally {
+ tw.release();
+ }
+ Collections.sort(list);
+ return list;
+ }
+
+ /**
+ * Returns a path model of the current file in the treewalk.
+ *
+ * @param tw
+ * @param basePath
+ * @param commit
+ * @return a path model of the current file in the treewalk
+ */
+ private static PathModel getPathModel(TreeWalk tw, String basePath, RevCommit commit) {
+ String name;
+ long size = 0;
+ if (StringUtils.isEmpty(basePath)) {
+ name = tw.getPathString();
+ } else {
+ name = tw.getPathString().substring(basePath.length() + 1);
+ }
+ ObjectId objectId = tw.getObjectId(0);
+ try {
+ if (!tw.isSubtree() && (tw.getFileMode(0) != FileMode.GITLINK)) {
+ size = tw.getObjectReader().getObjectSize(objectId, Constants.OBJ_BLOB);
+ }
+ } catch (Throwable t) {
+ error(t, null, "failed to retrieve blob size for " + tw.getPathString());
+ }
+ return new PathModel(name, tw.getPathString(), size, tw.getFileMode(0).getBits(),
+ objectId.getName(), commit.getName());
+ }
+
+ /**
+ * Returns a permissions representation of the mode bits.
+ *
+ * @param mode
+ * @return string representation of the mode bits
+ */
+ public static String getPermissionsFromMode(int mode) {
+ if (FileMode.TREE.equals(mode)) {
+ return "drwxr-xr-x";
+ } else if (FileMode.REGULAR_FILE.equals(mode)) {
+ return "-rw-r--r--";
+ } else if (FileMode.EXECUTABLE_FILE.equals(mode)) {
+ return "-rwxr-xr-x";
+ } else if (FileMode.SYMLINK.equals(mode)) {
+ return "symlink";
+ } else if (FileMode.GITLINK.equals(mode)) {
+ return "submodule";
+ }
+ return "missing";
+ }
+
+ /**
+ * Returns a list of commits since the minimum date starting from the
+ * specified object id.
+ *
+ * @param repository
+ * @param objectId
+ * if unspecified, HEAD is assumed.
+ * @param minimumDate
+ * @return list of commits
+ */
+ public static List<RevCommit> getRevLog(Repository repository, String objectId, Date minimumDate) {
+ List<RevCommit> list = new ArrayList<RevCommit>();
+ if (!hasCommits(repository)) {
+ return list;
+ }
+ try {
+ // resolve branch
+ ObjectId branchObject;
+ if (StringUtils.isEmpty(objectId)) {
+ branchObject = getDefaultBranch(repository);
+ } else {
+ branchObject = repository.resolve(objectId);
+ }
+
+ RevWalk rw = new RevWalk(repository);
+ rw.markStart(rw.parseCommit(branchObject));
+ rw.setRevFilter(CommitTimeRevFilter.after(minimumDate));
+ Iterable<RevCommit> revlog = rw;
+ for (RevCommit rev : revlog) {
+ list.add(rev);
+ }
+ rw.dispose();
+ } catch (Throwable t) {
+ error(t, repository, "{0} failed to get {1} revlog for minimum date {2}", objectId,
+ minimumDate);
+ }
+ return list;
+ }
+
+ /**
+ * Returns a list of commits starting from HEAD and working backwards.
+ *
+ * @param repository
+ * @param maxCount
+ * if < 0, all commits for the repository are returned.
+ * @return list of commits
+ */
+ public static List<RevCommit> getRevLog(Repository repository, int maxCount) {
+ return getRevLog(repository, null, 0, maxCount);
+ }
+
+ /**
+ * Returns a list of commits starting from the specified objectId using an
+ * offset and maxCount for paging. This is similar to LIMIT n OFFSET p in
+ * SQL. If the repository does not exist or is empty, an empty list is
+ * returned.
+ *
+ * @param repository
+ * @param objectId
+ * if unspecified, HEAD is assumed.
+ * @param offset
+ * @param maxCount
+ * if < 0, all commits are returned.
+ * @return a paged list of commits
+ */
+ public static List<RevCommit> getRevLog(Repository repository, String objectId, int offset,
+ int maxCount) {
+ return getRevLog(repository, objectId, null, offset, maxCount);
+ }
+
+ /**
+ * Returns a list of commits for the repository or a path within the
+ * repository. Caller may specify ending revision with objectId. Caller may
+ * specify offset and maxCount to achieve pagination of results. If the
+ * repository does not exist or is empty, an empty list is returned.
+ *
+ * @param repository
+ * @param objectId
+ * if unspecified, HEAD is assumed.
+ * @param path
+ * if unspecified, commits for repository are returned. If
+ * specified, commits for the path are returned.
+ * @param offset
+ * @param maxCount
+ * if < 0, all commits are returned.
+ * @return a paged list of commits
+ */
+ public static List<RevCommit> getRevLog(Repository repository, String objectId, String path,
+ int offset, int maxCount) {
+ List<RevCommit> list = new ArrayList<RevCommit>();
+ if (maxCount == 0) {
+ return list;
+ }
+ if (!hasCommits(repository)) {
+ return list;
+ }
+ try {
+ // resolve branch
+ ObjectId branchObject;
+ if (StringUtils.isEmpty(objectId)) {
+ branchObject = getDefaultBranch(repository);
+ } else {
+ branchObject = repository.resolve(objectId);
+ }
+ if (branchObject == null) {
+ return list;
+ }
+
+ RevWalk rw = new RevWalk(repository);
+ rw.markStart(rw.parseCommit(branchObject));
+ if (!StringUtils.isEmpty(path)) {
+ TreeFilter filter = AndTreeFilter.create(
+ PathFilterGroup.createFromStrings(Collections.singleton(path)),
+ TreeFilter.ANY_DIFF);
+ rw.setTreeFilter(filter);
+ }
+ 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) {
+ error(t, repository, "{0} failed to get {1} revlog for path {2}", objectId, path);
+ }
+ return list;
+ }
+
+ /**
+ * Returns a list of commits for the repository within the range specified
+ * by startRangeId and endRangeId. If the repository does not exist or is
+ * empty, an empty list is returned.
+ *
+ * @param repository
+ * @param startRangeId
+ * the first commit (not included in results)
+ * @param endRangeId
+ * the end commit (included in results)
+ * @return a list of commits
+ */
+ public static List<RevCommit> getRevLog(Repository repository, String startRangeId,
+ String endRangeId) {
+ List<RevCommit> list = new ArrayList<RevCommit>();
+ if (!hasCommits(repository)) {
+ return list;
+ }
+ try {
+ ObjectId endRange = repository.resolve(endRangeId);
+ ObjectId startRange = repository.resolve(startRangeId);
+
+ RevWalk rw = new RevWalk(repository);
+ rw.markStart(rw.parseCommit(endRange));
+ if (startRange.equals(ObjectId.zeroId())) {
+ // maybe this is a tag or an orphan branch
+ list.add(rw.parseCommit(endRange));
+ rw.dispose();
+ return list;
+ } else {
+ rw.markUninteresting(rw.parseCommit(startRange));
+ }
+
+ Iterable<RevCommit> revlog = rw;
+ for (RevCommit rev : revlog) {
+ list.add(rev);
+ }
+ rw.dispose();
+ } catch (Throwable t) {
+ error(t, repository, "{0} failed to get revlog for {1}..{2}", startRangeId, endRangeId);
+ }
+ return list;
+ }
+
+ /**
+ * Search the commit history for a case-insensitive match to the value.
+ * Search results require a specified SearchType of AUTHOR, COMMITTER, or
+ * COMMIT. Results may be paginated using offset and maxCount. If the
+ * repository does not exist or is empty, an empty list is returned.
+ *
+ * @param repository
+ * @param objectId
+ * if unspecified, HEAD is assumed.
+ * @param value
+ * @param type
+ * AUTHOR, COMMITTER, COMMIT
+ * @param offset
+ * @param maxCount
+ * if < 0, all matches are returned
+ * @return matching list of commits
+ */
+ public static List<RevCommit> searchRevlogs(Repository repository, String objectId,
+ String value, final com.gitblit.Constants.SearchType type, int offset, int maxCount) {
+ final String lcValue = value.toLowerCase();
+ List<RevCommit> list = new ArrayList<RevCommit>();
+ if (maxCount == 0) {
+ return list;
+ }
+ if (!hasCommits(repository)) {
+ return list;
+ }
+ try {
+ // resolve branch
+ ObjectId branchObject;
+ if (StringUtils.isEmpty(objectId)) {
+ branchObject = getDefaultBranch(repository);
+ } else {
+ branchObject = repository.resolve(objectId);
+ }
+
+ RevWalk rw = new RevWalk(repository);
+ rw.setRevFilter(new RevFilter() {
+
+ @Override
+ public RevFilter clone() {
+ // FindBugs complains about this method name.
+ // This is part of JGit design and unrelated to Cloneable.
+ return this;
+ }
+
+ @Override
+ public boolean include(RevWalk walker, RevCommit commit) throws StopWalkException,
+ MissingObjectException, IncorrectObjectTypeException, IOException {
+ boolean include = false;
+ switch (type) {
+ case AUTHOR:
+ include = (commit.getAuthorIdent().getName().toLowerCase().indexOf(lcValue) > -1)
+ || (commit.getAuthorIdent().getEmailAddress().toLowerCase()
+ .indexOf(lcValue) > -1);
+ break;
+ case COMMITTER:
+ include = (commit.getCommitterIdent().getName().toLowerCase()
+ .indexOf(lcValue) > -1)
+ || (commit.getCommitterIdent().getEmailAddress().toLowerCase()
+ .indexOf(lcValue) > -1);
+ break;
+ case COMMIT:
+ include = commit.getFullMessage().toLowerCase().indexOf(lcValue) > -1;
+ break;
+ }
+ return include;
+ }
+
+ });
+ rw.markStart(rw.parseCommit(branchObject));
+ 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) {
+ error(t, repository, "{0} failed to {1} search revlogs for {2}", type.name(), value);
+ }
+ return list;
+ }
+
+ /**
+ * Returns the default branch to use for a repository. Normally returns
+ * whatever branch HEAD points to, but if HEAD points to nothing it returns
+ * the most recently updated branch.
+ *
+ * @param repository
+ * @return the objectid of a branch
+ * @throws Exception
+ */
+ public static ObjectId getDefaultBranch(Repository repository) throws Exception {
+ ObjectId object = repository.resolve(Constants.HEAD);
+ if (object == null) {
+ // no HEAD
+ // perhaps non-standard repository, try local branches
+ List<RefModel> branchModels = getLocalBranches(repository, true, -1);
+ if (branchModels.size() > 0) {
+ // use most recently updated branch
+ RefModel branch = null;
+ Date lastDate = new Date(0);
+ for (RefModel branchModel : branchModels) {
+ if (branchModel.getDate().after(lastDate)) {
+ branch = branchModel;
+ lastDate = branch.getDate();
+ }
+ }
+ object = branch.getReferencedObjectId();
+ }
+ }
+ return object;
+ }
+
+ /**
+ * Returns the target of the symbolic HEAD reference for a repository.
+ * Normally returns a branch reference name, but when HEAD is detached,
+ * the commit is matched against the known tags. The most recent matching
+ * tag ref name will be returned if it references the HEAD commit. If
+ * no match is found, the SHA1 is returned.
+ *
+ * @param repository
+ * @return the ref name or the SHA1 for a detached HEAD
+ */
+ public static String getHEADRef(Repository repository) {
+ String target = null;
+ try {
+ target = repository.getFullBranch();
+ if (!target.startsWith(Constants.R_HEADS)) {
+ // refers to an actual commit, probably a tag
+ // find latest tag that matches the commit, if any
+ List<RefModel> tagModels = getTags(repository, true, -1);
+ if (tagModels.size() > 0) {
+ RefModel tag = null;
+ Date lastDate = new Date(0);
+ for (RefModel tagModel : tagModels) {
+ if (tagModel.getReferencedObjectId().getName().equals(target) &&
+ tagModel.getDate().after(lastDate)) {
+ tag = tagModel;
+ lastDate = tag.getDate();
+ }
+ }
+ target = tag.getName();
+ }
+ }
+ } catch (Throwable t) {
+ error(t, repository, "{0} failed to get symbolic HEAD target");
+ }
+ return target;
+ }
+
+ /**
+ * Sets the symbolic ref HEAD to the specified target ref. The
+ * HEAD will be detached if the target ref is not a branch.
+ *
+ * @param repository
+ * @param targetRef
+ * @return true if successful
+ */
+ public static boolean setHEADtoRef(Repository repository, String targetRef) {
+ try {
+ // detach HEAD if target ref is not a branch
+ boolean detach = !targetRef.startsWith(Constants.R_HEADS);
+ RefUpdate.Result result;
+ RefUpdate head = repository.updateRef(Constants.HEAD, detach);
+ if (detach) { // Tag
+ RevCommit commit = getCommit(repository, targetRef);
+ head.setNewObjectId(commit.getId());
+ result = head.forceUpdate();
+ } else {
+ result = head.link(targetRef);
+ }
+ switch (result) {
+ case NEW:
+ case FORCED:
+ case NO_CHANGE:
+ case FAST_FORWARD:
+ return true;
+ default:
+ LOGGER.error(MessageFormat.format("{0} HEAD update to {1} returned result {2}",
+ repository.getDirectory().getAbsolutePath(), targetRef, result));
+ }
+ } catch (Throwable t) {
+ error(t, repository, "{0} failed to set HEAD to {1}", targetRef);
+ }
+ return false;
+ }
+
+ /**
+ * Sets the local branch ref to point to the specified commit id.
+ *
+ * @param repository
+ * @param branch
+ * @param commitId
+ * @return true if successful
+ */
+ public static boolean setBranchRef(Repository repository, String branch, String commitId) {
+ String branchName = branch;
+ if (!branchName.startsWith(Constants.R_HEADS)) {
+ branchName = Constants.R_HEADS + branch;
+ }
+
+ try {
+ RefUpdate refUpdate = repository.updateRef(branchName, false);
+ refUpdate.setNewObjectId(ObjectId.fromString(commitId));
+ RefUpdate.Result result = refUpdate.forceUpdate();
+
+ switch (result) {
+ case NEW:
+ case FORCED:
+ case NO_CHANGE:
+ case FAST_FORWARD:
+ return true;
+ default:
+ LOGGER.error(MessageFormat.format("{0} {1} update to {2} returned result {3}",
+ repository.getDirectory().getAbsolutePath(), branchName, commitId, result));
+ }
+ } catch (Throwable t) {
+ error(t, repository, "{0} failed to set {1} to {2}", branchName, commitId);
+ }
+ return false;
+ }
+
+ /**
+ * Deletes the specified branch ref.
+ *
+ * @param repository
+ * @param branch
+ * @return true if successful
+ */
+ public static boolean deleteBranchRef(Repository repository, String branch) {
+ String branchName = branch;
+ if (!branchName.startsWith(Constants.R_HEADS)) {
+ branchName = Constants.R_HEADS + branch;
+ }
+
+ try {
+ RefUpdate refUpdate = repository.updateRef(branchName, false);
+ refUpdate.setForceUpdate(true);
+ RefUpdate.Result result = refUpdate.delete();
+ switch (result) {
+ case NEW:
+ case FORCED:
+ case NO_CHANGE:
+ case FAST_FORWARD:
+ return true;
+ default:
+ LOGGER.error(MessageFormat.format("{0} failed to delete to {1} returned result {2}",
+ repository.getDirectory().getAbsolutePath(), branchName, result));
+ }
+ } catch (Throwable t) {
+ error(t, repository, "{0} failed to delete {1}", branchName);
+ }
+ return false;
+ }
+
+ /**
+ * Get the full branch and tag ref names for any potential HEAD targets.
+ *
+ * @param repository
+ * @return a list of ref names
+ */
+ public static List<String> getAvailableHeadTargets(Repository repository) {
+ List<String> targets = new ArrayList<String>();
+ for (RefModel branchModel : JGitUtils.getLocalBranches(repository, true, -1)) {
+ targets.add(branchModel.getName());
+ }
+
+ for (RefModel tagModel : JGitUtils.getTags(repository, true, -1)) {
+ targets.add(tagModel.getName());
+ }
+ return targets;
+ }
+
+ /**
+ * Returns all refs grouped by their associated object id.
+ *
+ * @param repository
+ * @return all refs grouped by their referenced object id
+ */
+ public static Map<ObjectId, List<RefModel>> getAllRefs(Repository repository) {
+ return getAllRefs(repository, true);
+ }
+
+ /**
+ * Returns all refs grouped by their associated object id.
+ *
+ * @param repository
+ * @param includeRemoteRefs
+ * @return all refs grouped by their referenced object id
+ */
+ public static Map<ObjectId, List<RefModel>> getAllRefs(Repository repository, boolean includeRemoteRefs) {
+ List<RefModel> list = getRefs(repository, org.eclipse.jgit.lib.RefDatabase.ALL, true, -1);
+ Map<ObjectId, List<RefModel>> refs = new HashMap<ObjectId, List<RefModel>>();
+ for (RefModel ref : list) {
+ if (!includeRemoteRefs && ref.getName().startsWith(Constants.R_REMOTES)) {
+ continue;
+ }
+ ObjectId objectid = ref.getReferencedObjectId();
+ if (!refs.containsKey(objectid)) {
+ refs.put(objectid, new ArrayList<RefModel>());
+ }
+ refs.get(objectid).add(ref);
+ }
+ return refs;
+ }
+
+ /**
+ * Returns the list of tags in the repository. If repository does not exist
+ * or is empty, an empty list is returned.
+ *
+ * @param repository
+ * @param fullName
+ * if true, /refs/tags/yadayadayada is returned. If false,
+ * yadayadayada is returned.
+ * @param maxCount
+ * if < 0, all tags are returned
+ * @return list of tags
+ */
+ public static List<RefModel> getTags(Repository repository, boolean fullName, int maxCount) {
+ return getRefs(repository, Constants.R_TAGS, fullName, maxCount);
+ }
+
+ /**
+ * Returns the list of local branches in the repository. If repository does
+ * not exist or is empty, an empty list is returned.
+ *
+ * @param repository
+ * @param fullName
+ * if true, /refs/heads/yadayadayada is returned. If false,
+ * yadayadayada is returned.
+ * @param maxCount
+ * if < 0, all local branches are returned
+ * @return list of local branches
+ */
+ public static List<RefModel> getLocalBranches(Repository repository, boolean fullName,
+ int maxCount) {
+ return getRefs(repository, Constants.R_HEADS, fullName, maxCount);
+ }
+
+ /**
+ * Returns the list of remote branches in the repository. If repository does
+ * not exist or is empty, an empty list is returned.
+ *
+ * @param repository
+ * @param fullName
+ * if true, /refs/remotes/yadayadayada is returned. If false,
+ * yadayadayada is returned.
+ * @param maxCount
+ * if < 0, all remote branches are returned
+ * @return list of remote branches
+ */
+ public static List<RefModel> getRemoteBranches(Repository repository, boolean fullName,
+ int maxCount) {
+ return getRefs(repository, Constants.R_REMOTES, fullName, maxCount);
+ }
+
+ /**
+ * Returns the list of note branches. If repository does not exist or is
+ * empty, an empty list is returned.
+ *
+ * @param repository
+ * @param fullName
+ * if true, /refs/notes/yadayadayada is returned. If false,
+ * yadayadayada is returned.
+ * @param maxCount
+ * if < 0, all note branches are returned
+ * @return list of note branches
+ */
+ public static List<RefModel> getNoteBranches(Repository repository, boolean fullName,
+ int maxCount) {
+ return getRefs(repository, Constants.R_NOTES, fullName, maxCount);
+ }
+
+ /**
+ * Returns the list of refs in the specified base ref. If repository does
+ * not exist or is empty, an empty list is returned.
+ *
+ * @param repository
+ * @param fullName
+ * if true, /refs/yadayadayada is returned. If false,
+ * yadayadayada is returned.
+ * @return list of refs
+ */
+ public static List<RefModel> getRefs(Repository repository, String baseRef) {
+ return getRefs(repository, baseRef, true, -1);
+ }
+
+ /**
+ * Returns a list of references in the repository matching "refs". If the
+ * repository is null or empty, an empty list is returned.
+ *
+ * @param repository
+ * @param refs
+ * if unspecified, all refs are returned
+ * @param fullName
+ * if true, /refs/something/yadayadayada is returned. If false,
+ * yadayadayada is returned.
+ * @param maxCount
+ * if < 0, all references are returned
+ * @return list of references
+ */
+ private static List<RefModel> getRefs(Repository repository, String refs, boolean fullName,
+ int maxCount) {
+ List<RefModel> list = new ArrayList<RefModel>();
+ if (maxCount == 0) {
+ return list;
+ }
+ if (!hasCommits(repository)) {
+ return list;
+ }
+ try {
+ Map<String, Ref> map = repository.getRefDatabase().getRefs(refs);
+ RevWalk rw = new RevWalk(repository);
+ 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) {
+ error(e, repository, "{0} failed to retrieve {1}", refs);
+ }
+ return list;
+ }
+
+ /**
+ * Returns a RefModel for the gh-pages branch in the repository. If the
+ * branch can not be found, null is returned.
+ *
+ * @param repository
+ * @return a refmodel for the gh-pages branch or null
+ */
+ public static RefModel getPagesBranch(Repository repository) {
+ return getBranch(repository, "gh-pages");
+ }
+
+ /**
+ * Returns a RefModel for a specific branch name in the repository. If the
+ * branch can not be found, null is returned.
+ *
+ * @param repository
+ * @return a refmodel for the branch or null
+ */
+ public static RefModel getBranch(Repository repository, String name) {
+ RefModel branch = null;
+ try {
+ // search for the branch in local heads
+ for (RefModel ref : JGitUtils.getLocalBranches(repository, false, -1)) {
+ if (ref.reference.getName().endsWith(name)) {
+ branch = ref;
+ break;
+ }
+ }
+
+ // search for the branch in remote heads
+ if (branch == null) {
+ for (RefModel ref : JGitUtils.getRemoteBranches(repository, false, -1)) {
+ if (ref.reference.getName().endsWith(name)) {
+ branch = ref;
+ break;
+ }
+ }
+ }
+ } catch (Throwable t) {
+ LOGGER.error(MessageFormat.format("Failed to find {0} branch!", name), t);
+ }
+ return branch;
+ }
+
+ /**
+ * Returns the list of submodules for this repository.
+ *
+ * @param repository
+ * @param commit
+ * @return list of submodules
+ */
+ public static List<SubmoduleModel> getSubmodules(Repository repository, String commitId) {
+ RevCommit commit = getCommit(repository, commitId);
+ return getSubmodules(repository, commit.getTree());
+ }
+
+ /**
+ * Returns the list of submodules for this repository.
+ *
+ * @param repository
+ * @param commit
+ * @return list of submodules
+ */
+ public static List<SubmoduleModel> getSubmodules(Repository repository, RevTree tree) {
+ List<SubmoduleModel> list = new ArrayList<SubmoduleModel>();
+ byte [] blob = getByteContent(repository, tree, ".gitmodules", false);
+ if (blob == null) {
+ return list;
+ }
+ try {
+ BlobBasedConfig config = new BlobBasedConfig(repository.getConfig(), blob);
+ for (String module : config.getSubsections("submodule")) {
+ String path = config.getString("submodule", module, "path");
+ String url = config.getString("submodule", module, "url");
+ list.add(new SubmoduleModel(module, path, url));
+ }
+ } catch (ConfigInvalidException e) {
+ LOGGER.error("Failed to load .gitmodules file for " + repository.getDirectory(), e);
+ }
+ return list;
+ }
+
+ /**
+ * Returns the submodule definition for the specified path at the specified
+ * commit. If no module is defined for the path, null is returned.
+ *
+ * @param repository
+ * @param commit
+ * @param path
+ * @return a submodule definition or null if there is no submodule
+ */
+ public static SubmoduleModel getSubmoduleModel(Repository repository, String commitId, String path) {
+ for (SubmoduleModel model : getSubmodules(repository, commitId)) {
+ if (model.path.equals(path)) {
+ return model;
+ }
+ }
+ return null;
+ }
+
+ public static String getSubmoduleCommitId(Repository repository, String path, RevCommit commit) {
+ String commitId = null;
+ RevWalk rw = new RevWalk(repository);
+ TreeWalk tw = new TreeWalk(repository);
+ tw.setFilter(PathFilterGroup.createFromStrings(Collections.singleton(path)));
+ try {
+ tw.reset(commit.getTree());
+ while (tw.next()) {
+ if (tw.isSubtree() && !path.equals(tw.getPathString())) {
+ tw.enterSubtree();
+ continue;
+ }
+ if (FileMode.GITLINK == tw.getFileMode(0)) {
+ commitId = tw.getObjectId(0).getName();
+ break;
+ }
+ }
+ } catch (Throwable t) {
+ error(t, repository, "{0} can't find {1} in commit {2}", path, commit.name());
+ } finally {
+ rw.dispose();
+ tw.release();
+ }
+ return commitId;
+ }
+
+ /**
+ * Returns the list of notes entered about the commit from the refs/notes
+ * namespace. If the repository does not exist or is empty, an empty list is
+ * returned.
+ *
+ * @param repository
+ * @param commit
+ * @return list of notes
+ */
+ public static List<GitNote> getNotesOnCommit(Repository repository, RevCommit commit) {
+ List<GitNote> list = new ArrayList<GitNote>();
+ if (!hasCommits(repository)) {
+ return list;
+ }
+ List<RefModel> noteBranches = getNoteBranches(repository, true, -1);
+ for (RefModel notesRef : noteBranches) {
+ RevTree notesTree = JGitUtils.getCommit(repository, notesRef.getName()).getTree();
+ // flat notes list
+ String notePath = commit.getName();
+ 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);
+ continue;
+ }
+
+ // folder structure
+ StringBuilder sb = new StringBuilder(commit.getName());
+ sb.insert(2, '/');
+ notePath = sb.toString();
+ 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;
+ }
+
+ /**
+ * Create an orphaned branch in a repository.
+ *
+ * @param repository
+ * @param branchName
+ * @param author
+ * if unspecified, Gitblit will be the author of this new branch
+ * @return true if successful
+ */
+ public static boolean createOrphanBranch(Repository repository, String branchName,
+ PersonIdent author) {
+ boolean success = false;
+ String message = "Created branch " + branchName;
+ if (author == null) {
+ author = new PersonIdent("Gitblit", "gitblit@localhost");
+ }
+ try {
+ ObjectInserter odi = repository.newObjectInserter();
+ try {
+ // Create a blob object to insert into a tree
+ ObjectId blobId = odi.insert(Constants.OBJ_BLOB,
+ message.getBytes(Constants.CHARACTER_ENCODING));
+
+ // Create a tree object to reference from a commit
+ TreeFormatter tree = new TreeFormatter();
+ tree.append(".branch", FileMode.REGULAR_FILE, blobId);
+ ObjectId treeId = odi.insert(tree);
+
+ // Create a commit object
+ CommitBuilder commit = new CommitBuilder();
+ commit.setAuthor(author);
+ commit.setCommitter(author);
+ commit.setEncoding(Constants.CHARACTER_ENCODING);
+ commit.setMessage(message);
+ commit.setTreeId(treeId);
+
+ // Insert the commit into the repository
+ ObjectId commitId = odi.insert(commit);
+ odi.flush();
+
+ RevWalk revWalk = new RevWalk(repository);
+ try {
+ RevCommit revCommit = revWalk.parseCommit(commitId);
+ if (!branchName.startsWith("refs/")) {
+ branchName = "refs/heads/" + branchName;
+ }
+ RefUpdate ru = repository.updateRef(branchName);
+ ru.setNewObjectId(commitId);
+ ru.setRefLogMessage("commit: " + revCommit.getShortMessage(), false);
+ Result rc = ru.forceUpdate();
+ switch (rc) {
+ case NEW:
+ case FORCED:
+ case FAST_FORWARD:
+ success = true;
+ break;
+ default:
+ success = false;
+ }
+ } finally {
+ revWalk.release();
+ }
+ } finally {
+ odi.release();
+ }
+ } catch (Throwable t) {
+ error(t, repository, "Failed to create orphan branch {1} in repository {0}", branchName);
+ }
+ return success;
+ }
+
+ /**
+ * Reads the sparkleshare id, if present, from the repository.
+ *
+ * @param repository
+ * @return an id or null
+ */
+ public static String getSparkleshareId(Repository repository) {
+ byte[] content = getByteContent(repository, null, ".sparkleshare", false);
+ if (content == null) {
+ return null;
+ }
+ return StringUtils.decodeString(content);
+ }
+}
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