/**
* Gets info of the given commit and checks if it was a RENAME. If yes, returns the older file
* path, which file was renamed from. If it's not a rename, returns null.
*/
@Nullable
private static FilePath getFirstCommitRenamePath(
Project project, VirtualFile root, String commit, FilePath filePath) throws VcsException {
// 'git show -M --name-status <commit hash>' returns the information about commit and detects
// renames.
// NB: we can't specify the filepath, because then rename detection will work only with the
// '--follow' option, which we don't wanna use.
final GitSimpleHandler h = new GitSimpleHandler(project, root, GitCommand.SHOW);
final GitLogParser parser =
new GitLogParser(project, GitLogParser.NameStatus.STATUS, HASH, COMMIT_TIME, SHORT_PARENTS);
h.setNoSSH(true);
h.setStdoutSuppressed(true);
h.addParameters("-M", "--name-status", parser.getPretty(), "--encoding=UTF-8", commit);
h.endOptions();
final String output = h.run();
final List<GitLogRecord> records = parser.parse(output);
if (records.isEmpty()) return null;
// we have information about all changed files of the commit. Extracting information about the
// file we need.
final List<Change> changes = records.get(0).parseChanges(project, root);
for (Change change : changes) {
if ((change.isMoved() || change.isRenamed())
&& filePath.equals(change.getAfterRevision().getFile())) {
return change.getBeforeRevision().getFile();
}
}
return null;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
FilePathUnderVcs that = (FilePathUnderVcs) o;
if (myPath != null ? !myPath.equals(that.myPath) : that.myPath != null) return false;
if (myVcs != null
? !Comparing.equal(myVcs.getName(), that.myVcs.getName())
: that.myVcs != null) return false;
return true;
}