| /* |
| * Copyright (C) 2017, Two Sigma Open Source and others |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Distribution License v. 1.0 which is available at |
| * https://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| package org.eclipse.jgit.api; |
| |
| import static org.eclipse.jgit.util.FileUtils.RECURSIVE; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.text.MessageFormat; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.eclipse.jgit.api.errors.GitAPIException; |
| import org.eclipse.jgit.api.errors.JGitInternalException; |
| import org.eclipse.jgit.api.errors.NoHeadException; |
| import org.eclipse.jgit.internal.JGitText; |
| import org.eclipse.jgit.lib.ConfigConstants; |
| import org.eclipse.jgit.lib.ObjectId; |
| import org.eclipse.jgit.lib.Ref; |
| import org.eclipse.jgit.lib.Repository; |
| import org.eclipse.jgit.lib.StoredConfig; |
| import org.eclipse.jgit.revwalk.RevCommit; |
| import org.eclipse.jgit.revwalk.RevTree; |
| import org.eclipse.jgit.revwalk.RevWalk; |
| import org.eclipse.jgit.submodule.SubmoduleWalk; |
| import org.eclipse.jgit.treewalk.filter.PathFilter; |
| import org.eclipse.jgit.treewalk.filter.PathFilterGroup; |
| import org.eclipse.jgit.treewalk.filter.TreeFilter; |
| import org.eclipse.jgit.util.FileUtils; |
| |
| /** |
| * A class used to execute a submodule deinit command. |
| * <p> |
| * This will remove the module(s) from the working tree, but won't affect |
| * .git/modules. |
| * |
| * @since 4.10 |
| * @see <a href= |
| * "http://www.kernel.org/pub/software/scm/git/docs/git-submodule.html" |
| * >Git documentation about submodules</a> |
| */ |
| public class SubmoduleDeinitCommand |
| extends GitCommand<Collection<SubmoduleDeinitResult>> { |
| |
| private final Collection<String> paths; |
| |
| private boolean force; |
| |
| /** |
| * Constructor of SubmoduleDeinitCommand |
| * |
| * @param repo |
| */ |
| public SubmoduleDeinitCommand(Repository repo) { |
| super(repo); |
| paths = new ArrayList<>(); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * <p> |
| * |
| * @return the set of repositories successfully deinitialized. |
| * @throws NoSuchSubmoduleException |
| * if any of the submodules which we might want to deinitialize |
| * don't exist |
| */ |
| @Override |
| public Collection<SubmoduleDeinitResult> call() throws GitAPIException { |
| checkCallable(); |
| try { |
| if (paths.isEmpty()) { |
| return Collections.emptyList(); |
| } |
| for (String path : paths) { |
| if (!submoduleExists(path)) { |
| throw new NoSuchSubmoduleException(path); |
| } |
| } |
| List<SubmoduleDeinitResult> results = new ArrayList<>(paths.size()); |
| try (RevWalk revWalk = new RevWalk(repo); |
| SubmoduleWalk generator = SubmoduleWalk.forIndex(repo)) { |
| generator.setFilter(PathFilterGroup.createFromStrings(paths)); |
| StoredConfig config = repo.getConfig(); |
| while (generator.next()) { |
| String path = generator.getPath(); |
| String name = generator.getModuleName(); |
| SubmoduleDeinitStatus status = checkDirty(revWalk, path); |
| switch (status) { |
| case SUCCESS: |
| deinit(path); |
| break; |
| case ALREADY_DEINITIALIZED: |
| break; |
| case DIRTY: |
| if (force) { |
| deinit(path); |
| status = SubmoduleDeinitStatus.FORCED; |
| } |
| break; |
| default: |
| throw new JGitInternalException(MessageFormat.format( |
| JGitText.get().unexpectedSubmoduleStatus, |
| status)); |
| } |
| |
| config.unsetSection( |
| ConfigConstants.CONFIG_SUBMODULE_SECTION, name); |
| results.add(new SubmoduleDeinitResult(path, status)); |
| } |
| } |
| return results; |
| } catch (IOException e) { |
| throw new JGitInternalException(e.getMessage(), e); |
| } |
| } |
| |
| /** |
| * Recursively delete the *contents* of path, but leave path as an empty |
| * directory |
| * |
| * @param path |
| * the path to clean |
| * @throws IOException |
| */ |
| private void deinit(String path) throws IOException { |
| File dir = new File(repo.getWorkTree(), path); |
| if (!dir.isDirectory()) { |
| throw new JGitInternalException(MessageFormat.format( |
| JGitText.get().expectedDirectoryNotSubmodule, path)); |
| } |
| final File[] ls = dir.listFiles(); |
| if (ls != null) { |
| for (File f : ls) { |
| FileUtils.delete(f, RECURSIVE); |
| } |
| } |
| } |
| |
| /** |
| * Check if a submodule is dirty. A submodule is dirty if there are local |
| * changes to the submodule relative to its HEAD, including untracked files. |
| * It is also dirty if the HEAD of the submodule does not match the value in |
| * the parent repo's index or HEAD. |
| * |
| * @param revWalk |
| * @param path |
| * @return status of the command |
| * @throws GitAPIException |
| * @throws IOException |
| */ |
| private SubmoduleDeinitStatus checkDirty(RevWalk revWalk, String path) |
| throws GitAPIException, IOException { |
| Ref head = repo.exactRef("HEAD"); //$NON-NLS-1$ |
| if (head == null) { |
| throw new NoHeadException( |
| JGitText.get().invalidRepositoryStateNoHead); |
| } |
| RevCommit headCommit = revWalk.parseCommit(head.getObjectId()); |
| RevTree tree = headCommit.getTree(); |
| |
| ObjectId submoduleHead; |
| try (SubmoduleWalk w = SubmoduleWalk.forPath(repo, tree, path)) { |
| submoduleHead = w.getHead(); |
| if (submoduleHead == null) { |
| // The submodule is not checked out. |
| return SubmoduleDeinitStatus.ALREADY_DEINITIALIZED; |
| } |
| if (!submoduleHead.equals(w.getObjectId())) { |
| // The submodule's current HEAD doesn't match the value in the |
| // outer repo's HEAD. |
| return SubmoduleDeinitStatus.DIRTY; |
| } |
| } |
| |
| try (SubmoduleWalk w = SubmoduleWalk.forIndex(repo)) { |
| if (!w.next()) { |
| // The submodule does not exist in the index (shouldn't happen |
| // since we check this earlier) |
| return SubmoduleDeinitStatus.DIRTY; |
| } |
| if (!submoduleHead.equals(w.getObjectId())) { |
| // The submodule's current HEAD doesn't match the value in the |
| // outer repo's index. |
| return SubmoduleDeinitStatus.DIRTY; |
| } |
| |
| try (Repository submoduleRepo = w.getRepository()) { |
| Status status = Git.wrap(submoduleRepo).status().call(); |
| return status.isClean() ? SubmoduleDeinitStatus.SUCCESS |
| : SubmoduleDeinitStatus.DIRTY; |
| } |
| } |
| } |
| |
| /** |
| * Check if this path is a submodule by checking the index, which is what |
| * git submodule deinit checks. |
| * |
| * @param path |
| * path of the submodule |
| * |
| * @return {@code true} if path exists and is a submodule in index, |
| * {@code false} otherwise |
| * @throws IOException |
| */ |
| private boolean submoduleExists(String path) throws IOException { |
| TreeFilter filter = PathFilter.create(path); |
| try (SubmoduleWalk w = SubmoduleWalk.forIndex(repo)) { |
| return w.setFilter(filter).next(); |
| } |
| } |
| |
| /** |
| * Add repository-relative submodule path to deinitialize |
| * |
| * @param path |
| * (with <code>/</code> as separator) |
| * @return this command |
| */ |
| public SubmoduleDeinitCommand addPath(String path) { |
| paths.add(path); |
| return this; |
| } |
| |
| /** |
| * If {@code true}, call() will deinitialize modules with local changes; |
| * else it will refuse to do so. |
| * |
| * @param force |
| * @return {@code this} |
| */ |
| public SubmoduleDeinitCommand setForce(boolean force) { |
| this.force = force; |
| return this; |
| } |
| |
| /** |
| * The user tried to deinitialize a submodule that doesn't exist in the |
| * index. |
| */ |
| public static class NoSuchSubmoduleException extends GitAPIException { |
| private static final long serialVersionUID = 1L; |
| |
| /** |
| * Constructor of NoSuchSubmoduleException |
| * |
| * @param path |
| * path of non-existing submodule |
| */ |
| public NoSuchSubmoduleException(String path) { |
| super(MessageFormat.format(JGitText.get().noSuchSubmodule, path)); |
| } |
| } |
| |
| /** |
| * The effect of a submodule deinit command for a given path |
| */ |
| public enum SubmoduleDeinitStatus { |
| /** |
| * The submodule was not initialized in the first place |
| */ |
| ALREADY_DEINITIALIZED, |
| /** |
| * The submodule was deinitialized |
| */ |
| SUCCESS, |
| /** |
| * The submodule had local changes, but was deinitialized successfully |
| */ |
| FORCED, |
| /** |
| * The submodule had local changes and force was false |
| */ |
| DIRTY, |
| } |
| } |