Example usage for org.eclipse.jgit.lib Constants HEAD

Introduction

In this page you can find the example usage for org.eclipse.jgit.lib Constants HEAD.

Prototype

String HEAD

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Document

Special name for the "HEAD" symbolic-ref.

Usage

From source file:com.gitblit.utils.JGitUtils.java

License:Apache License

/**
 * 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./*  w ww.  ja va 2  s  .  co  m*/
 *
 * @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;
}

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From source file:com.gitblit.utils.JGitUtils.java

License:Apache License

/**
 * 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//from   w w w. j  ava2s  .c  o  m
 * @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;
}

---

From source file:com.gitblit.wicket.pages.MarkdownPage.java

License:Apache License

public MarkdownPage(PageParameters params) {
    super(params);

    final String markdownPath = WicketUtils.getPath(params);

    Repository r = getRepository();/*from  w w  w. ja  va  2 s . c o m*/
    RevCommit commit = JGitUtils.getCommit(r, objectId);
    String[] encodings = GitBlit.getEncodings();

    // markdown page links
    add(new BookmarkablePageLink<Void>("blameLink", BlamePage.class,
            WicketUtils.newPathParameter(repositoryName, objectId, markdownPath)));
    add(new BookmarkablePageLink<Void>("historyLink", HistoryPage.class,
            WicketUtils.newPathParameter(repositoryName, objectId, markdownPath)));
    add(new BookmarkablePageLink<Void>("rawLink", RawPage.class,
            WicketUtils.newPathParameter(repositoryName, objectId, markdownPath)));
    add(new BookmarkablePageLink<Void>("headLink", MarkdownPage.class,
            WicketUtils.newPathParameter(repositoryName, Constants.HEAD, markdownPath)));

    // Read raw markdown content and transform it to html
    String markdownText = JGitUtils.getStringContent(r, commit.getTree(), markdownPath, encodings);
    String htmlText;
    try {
        htmlText = MarkdownUtils.transformMarkdown(markdownText);
    } catch (ParseException p) {
        markdownText = MessageFormat.format(
                "<div class=\"alert alert-error\"><strong>{0}:</strong> {1}</div>{2}", getString("gb.error"),
                getString("gb.markdownFailure"), markdownText);
        htmlText = StringUtils.breakLinesForHtml(markdownText);
    }

    // Add the html to the page
    add(new Label("markdownText", htmlText).setEscapeModelStrings(false));
}

---

From source file:com.github.checkstyle.regression.internal.CommitValidationTest.java

License:Open Source License

private static RevCommitsPair resolveRevCommitsPair(Repository repo) {
    RevCommitsPair revCommitIteratorPair;

    try (RevWalk revWalk = new RevWalk(repo)) {
        final Iterator<RevCommit> first;
        final Iterator<RevCommit> second;
        final ObjectId headId = repo.resolve(Constants.HEAD);
        final RevCommit headCommit = revWalk.parseCommit(headId);

        if (isMergeCommit(headCommit)) {
            final RevCommit firstParent = headCommit.getParent(0);
            final RevCommit secondParent = headCommit.getParent(1);

            try (Git git = new Git(repo)) {
                first = git.log().add(firstParent).call().iterator();
                second = git.log().add(secondParent).call().iterator();
            }//from   ww w  .  ja va  2  s  .co m
        } else {
            try (Git git = new Git(repo)) {
                first = git.log().call().iterator();
            }
            second = Collections.emptyIterator();
        }

        revCommitIteratorPair = new RevCommitsPair(new OmitMergeCommitsIterator(first),
                new OmitMergeCommitsIterator(second));
    } catch (GitAPIException | IOException ex) {
        revCommitIteratorPair = new RevCommitsPair();
    }

    return revCommitIteratorPair;
}

---

From source file:com.google.devtools.build.lib.bazel.repository.GitCloneFunction.java

License:Open Source License

private boolean isUpToDate(GitRepositoryDescriptor descriptor) {
    // Initializing/checking status of/etc submodules cleanly is hard, so don't try for now.
    if (descriptor.initSubmodules) {
        return false;
    }//  w ww. j  a  v a2  s  . com
    Repository repository = null;
    try {
        repository = new FileRepositoryBuilder()
                .setGitDir(descriptor.directory.getChild(Constants.DOT_GIT).getPathFile()).setMustExist(true)
                .build();
        ObjectId head = repository.resolve(Constants.HEAD);
        ObjectId checkout = repository.resolve(descriptor.checkout);
        if (head != null && checkout != null && head.equals(checkout)) {
            Status status = Git.wrap(repository).status().call();
            if (!status.hasUncommittedChanges()) {
                // new_git_repository puts (only) BUILD and WORKSPACE, and
                // git_repository doesn't add any files.
                Set<String> untracked = status.getUntracked();
                if (untracked.isEmpty() || (untracked.size() == 2 && untracked.contains("BUILD")
                        && untracked.contains("WORKSPACE"))) {
                    return true;
                }
            }
        }
    } catch (GitAPIException | IOException e) {
        // Any exceptions here, we'll just blow it away and try cloning fresh.
        // The fresh clone avoids any weirdness due to what's there and has nicer
        // error reporting.
    } finally {
        if (repository != null) {
            repository.close();
        }
    }
    return false;
}

---

From source file:com.google.devtools.build.lib.bazel.repository.GitCloner.java

License:Open Source License

private static boolean isUpToDate(GitRepositoryDescriptor descriptor) {
    // Initializing/checking status of/etc submodules cleanly is hard, so don't try for now.
    if (descriptor.initSubmodules) {
        return false;
    }//  w  w  w  .  j a  v a 2s .  c om
    Repository repository = null;
    try {
        repository = new FileRepositoryBuilder()
                .setGitDir(descriptor.directory.getChild(Constants.DOT_GIT).getPathFile()).setMustExist(true)
                .build();
        ObjectId head = repository.resolve(Constants.HEAD);
        ObjectId checkout = repository.resolve(descriptor.checkout);
        if (head != null && checkout != null && head.equals(checkout)) {
            Status status = Git.wrap(repository).status().call();
            if (!status.hasUncommittedChanges()) {
                // new_git_repository puts (only) BUILD and WORKSPACE, and
                // git_repository doesn't add any files.
                Set<String> untracked = status.getUntracked();
                if (untracked.isEmpty() || (untracked.size() == 2 && untracked.contains("BUILD")
                        && untracked.contains("WORKSPACE"))) {
                    return true;
                }
            }
        }
    } catch (GitAPIException | IOException e) {
        // Any exceptions here, we'll just blow it away and try cloning fresh.
        // The fresh clone avoids any weirdness due to what's there and has nicer
        // error reporting.
    } finally {
        if (repository != null) {
            repository.close();
        }
    }
    return false;
}

---

From source file:com.google.gerrit.acceptance.git.GitUtil.java

License:Apache License

private static ObjectId computeChangeId(Git git, PersonIdent i, String msg) throws IOException {
    RevWalk rw = new RevWalk(git.getRepository());
    try {//from   w  w w .ja v  a  2  s. c  o  m
        Ref head = git.getRepository().getRef(Constants.HEAD);
        if (head.getObjectId() != null) {
            RevCommit parent = rw.lookupCommit(head.getObjectId());
            return ChangeIdUtil.computeChangeId(parent.getTree(), parent.getId(), i, i, msg);
        } else {
            return ChangeIdUtil.computeChangeId(null, null, i, i, msg);
        }
    } finally {
        rw.release();
    }
}

---

From source file:com.google.gerrit.acceptance.git.ssh.GitUtil.java

License:Apache License

private static ObjectId computeChangeId(Git git, PersonIdent i, String msg) throws IOException {
    RevWalk rw = new RevWalk(git.getRepository());
    try {//from w w w .j a v  a 2  s . c om
        RevCommit parent = rw.lookupCommit(git.getRepository().getRef(Constants.HEAD).getObjectId());
        return ChangeIdUtil.computeChangeId(parent.getTree(), parent.getId(), i, i, msg);
    } finally {
        rw.release();
    }
}

---

From source file:com.google.gerrit.acceptance.rest.project.CreateProjectIT.java

License:Apache License

private void assertHead(String projectName, String expectedRef)
        throws RepositoryNotFoundException, IOException {
    try (Repository repo = repoManager.openRepository(new Project.NameKey(projectName))) {
        assertThat(repo.getRef(Constants.HEAD).getTarget().getName()).isEqualTo(expectedRef);
    }/*from  w w w  . ja v  a  2 s  .  co m*/
}

---

From source file:com.google.gerrit.httpd.rpc.project.ListBranches.java

License:Apache License

@Override
public ListBranchesResult call() throws NoSuchProjectException {
    final ProjectControl pctl = projectControlFactory.validateFor( //
            projectName, //
            ProjectControl.OWNER | ProjectControl.VISIBLE);

    final List<Branch> branches = new ArrayList<Branch>();
    Branch headBranch = null;//from  w w  w  .  jav a 2s.c  om
    final Set<String> targets = new HashSet<String>();

    final Repository db;
    try {
        db = repoManager.openRepository(projectName);
    } catch (RepositoryNotFoundException noGitRepository) {
        return new ListBranchesResult(branches, false, true);
    }
    try {
        final Map<String, Ref> all = db.getAllRefs();

        if (!all.containsKey(Constants.HEAD)) {
            // The branch pointed to by HEAD doesn't exist yet, so getAllRefs
            // filtered it out. If we ask for it individually we can find the
            // underlying target and put it into the map anyway.
            //
            try {
                Ref head = db.getRef(Constants.HEAD);
                if (head != null) {
                    all.put(Constants.HEAD, head);
                }
            } catch (IOException e) {
                // Ignore the failure reading HEAD.
            }
        }

        for (final Ref ref : all.values()) {
            if (ref.isSymbolic()) {
                targets.add(ref.getTarget().getName());
            }
        }

        for (final Ref ref : all.values()) {
            if (ref.isSymbolic()) {
                // A symbolic reference to another branch, instead of
                // showing the resolved value, show the name it references.
                //
                String target = ref.getTarget().getName();
                RefControl targetRefControl = pctl.controlForRef(target);
                if (!targetRefControl.isVisible()) {
                    continue;
                }
                if (target.startsWith(Constants.R_HEADS)) {
                    target = target.substring(Constants.R_HEADS.length());
                }

                Branch b = createBranch(ref.getName());
                b.setRevision(new RevId(target));

                if (Constants.HEAD.equals(ref.getName())) {
                    b.setCanDelete(false);
                    headBranch = b;
                } else {
                    b.setCanDelete(targetRefControl.canDelete());
                    branches.add(b);
                }
                continue;
            }

            RefControl refControl = pctl.controlForRef(ref.getName());

            if (ref.getName().startsWith(Constants.R_HEADS) && refControl.isVisible()) {
                final Branch b = createBranch(ref.getName());
                if (ref.getObjectId() != null) {
                    b.setRevision(new RevId(ref.getObjectId().name()));
                }

                b.setCanDelete(!targets.contains(ref.getName()) && refControl.canDelete());

                branches.add(b);
            }
        }
    } finally {
        db.close();
    }
    Collections.sort(branches, new Comparator<Branch>() {
        @Override
        public int compare(final Branch a, final Branch b) {
            return a.getName().compareTo(b.getName());
        }
    });
    if (headBranch != null) {
        branches.add(0, headBranch);
    }
    return new ListBranchesResult(branches, pctl.canAddRefs(), false);
}

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