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/*
* Copyright (C) 2011, GitHub Inc. 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 java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.jgit.api.errors.GitAPIException;
import org.eclipse.jgit.api.errors.JGitInternalException;
import org.eclipse.jgit.errors.ConfigInvalidException;
import org.eclipse.jgit.lib.ConfigConstants;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.lib.StoredConfig;
import org.eclipse.jgit.submodule.SubmoduleWalk;
import org.eclipse.jgit.treewalk.filter.PathFilterGroup;
/**
* A class used to execute a submodule sync command.
*
* This will set the remote URL in a submodule's repository to the current value
* in the .gitmodules file.
*
* @see <a href=
* "http://www.kernel.org/pub/software/scm/git/docs/git-submodule.html"
* >Git documentation about submodules</a>
*/
public class SubmoduleSyncCommand extends GitCommand<Map<String, String>> {
private final Collection<String> paths;
/**
* Constructor for SubmoduleSyncCommand.
*
* @param repo
* a {@link org.eclipse.jgit.lib.Repository} object.
*/
public SubmoduleSyncCommand(Repository repo) {
super(repo);
paths = new ArrayList<>();
}
/**
* Add repository-relative submodule path to synchronize
*
* @param path
* (with <code>/</code> as separator)
* @return this command
*/
public SubmoduleSyncCommand addPath(String path) {
paths.add(path);
return this;
}
/**
* Get branch that HEAD currently points to
*
* @param subRepo
* a {@link org.eclipse.jgit.lib.Repository} object.
* @return shortened branch name, null on failures
* @throws java.io.IOException
* if an IO error occurred
*/
protected String getHeadBranch(Repository subRepo) throws IOException {
Ref head = subRepo.exactRef(Constants.HEAD);
if (head != null && head.isSymbolic()) {
return Repository.shortenRefName(head.getLeaf().getName());
}
return null;
}
@Override
public Map<String, String> call() throws GitAPIException {
checkCallable();
try (SubmoduleWalk generator = SubmoduleWalk.forIndex(repo)) {
if (!paths.isEmpty())
generator.setFilter(PathFilterGroup.createFromStrings(paths));
Map<String, String> synced = new HashMap<>();
StoredConfig config = repo.getConfig();
while (generator.next()) {
String remoteUrl = generator.getRemoteUrl();
if (remoteUrl == null)
continue;
String path = generator.getPath();
config.setString(ConfigConstants.CONFIG_SUBMODULE_SECTION,
path, ConfigConstants.CONFIG_KEY_URL, remoteUrl);
synced.put(path, remoteUrl);
try (Repository subRepo = generator.getRepository()) {
if (subRepo == null) {
continue;
}
StoredConfig subConfig;
String branch;
subConfig = subRepo.getConfig();
// Get name of remote associated with current branch and
// fall back to default remote name as last resort
branch = getHeadBranch(subRepo);
String remote = null;
if (branch != null) {
remote = subConfig.getString(
ConfigConstants.CONFIG_BRANCH_SECTION, branch,
ConfigConstants.CONFIG_KEY_REMOTE);
}
if (remote == null) {
remote = Constants.DEFAULT_REMOTE_NAME;
}
subConfig.setString(ConfigConstants.CONFIG_REMOTE_SECTION,
remote, ConfigConstants.CONFIG_KEY_URL, remoteUrl);
subConfig.save();
}
}
if (!synced.isEmpty())
config.save();
return synced;
} catch (IOException | ConfigInvalidException e) {
throw new JGitInternalException(e.getMessage(), e);
}
}
}
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