我必须如何扩展以下 logCommand 才能获得--follow
的选项git log
命令工作?
Git git = new Git(myRepository);
Iterable<RevCommit> log = git.log().addPath("com/mycompany/myclass.java").call();
这个选项是在jGit中实现的,但我不知道如何使用它。 logCommand 的方法似乎没有用。谢谢你!
在一些午夜工作中,我得到了以下信息:
LogCommand 的最后一次提交将根据所有较旧的提交检查重命名,直到找到重命名操作。这个循环将持续下去,直到找不到重命名为止。
但是,该搜索可能需要一些时间,特别是如果它迭代所有提交直到最后并且不再找到任何重命名操作。因此,我愿意接受任何改进。我猜 git 通常使用索引来在更短的时间内执行以下选项。
import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.api.errors.GitAPIException;
import org.eclipse.jgit.diff.DiffEntry;
import org.eclipse.jgit.diff.RenameDetector;
import org.eclipse.jgit.errors.MissingObjectException;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.treewalk.TreeWalk;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
/**
* Create a Log command that enables the follow option: git log --follow -- < path >
* User: OneWorld
* Example for usage: ArrayList<RevCommit> commits = new LogFollowCommand(repo,"src/com/mycompany/myfile.java").call();
*/
public class LogFollowCommand {
private final Repository repository;
private String path;
private Git git;
/**
* Create a Log command that enables the follow option: git log --follow -- < path >
* @param repository
* @param path
*/
public LogFollowCommand(Repository repository, String path){
this.repository = repository;
this.path = path;
}
/**
* Returns the result of a git log --follow -- < path >
* @return
* @throws IOException
* @throws MissingObjectException
* @throws GitAPIException
*/
public ArrayList<RevCommit> call() throws IOException, MissingObjectException, GitAPIException {
ArrayList<RevCommit> commits = new ArrayList<RevCommit>();
git = new Git(repository);
RevCommit start = null;
do {
Iterable<RevCommit> log = git.log().addPath(path).call();
for (RevCommit commit : log) {
if (commits.contains(commit)) {
start = null;
} else {
start = commit;
commits.add(commit);
}
}
if (start == null) return commits;
}
while ((path = getRenamedPath( start)) != null);
return commits;
}
/**
* Checks for renames in history of a certain file. Returns null, if no rename was found.
* Can take some seconds, especially if nothing is found... Here might be some tweaking necessary or the LogFollowCommand must be run in a thread.
* @param start
* @return String or null
* @throws IOException
* @throws MissingObjectException
* @throws GitAPIException
*/
private String getRenamedPath( RevCommit start) throws IOException, MissingObjectException, GitAPIException {
Iterable<RevCommit> allCommitsLater = git.log().add(start).call();
for (RevCommit commit : allCommitsLater) {
TreeWalk tw = new TreeWalk(repository);
tw.addTree(commit.getTree());
tw.addTree(start.getTree());
tw.setRecursive(true);
RenameDetector rd = new RenameDetector(repository);
rd.addAll(DiffEntry.scan(tw));
List<DiffEntry> files = rd.compute();
for (DiffEntry diffEntry : files) {
if ((diffEntry.getChangeType() == DiffEntry.ChangeType.RENAME || diffEntry.getChangeType() == DiffEntry.ChangeType.COPY) && diffEntry.getNewPath().contains(path)) {
System.out.println("Found: " + diffEntry.toString() + " return " + diffEntry.getOldPath());
return diffEntry.getOldPath();
}
}
}
return null;
}
}
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