private DiffEntry findRename(RevCommit parent, RevCommit commit, PathFilter path)
throws IOException {
if (renameDetector == null) return null;
treeWalk.setFilter(TreeFilter.ANY_DIFF);
treeWalk.reset(parent.getTree(), commit.getTree());
renameDetector.reset();
renameDetector.addAll(DiffEntry.scan(treeWalk));
for (DiffEntry ent : renameDetector.compute()) {
if (isRename(ent) && ent.getNewPath().equals(path.getPath())) return ent;
}
return null;
}
public String getDiffText(String str) {
int filenubs = 0;
int lines = 0;
FileRepositoryBuilder builder = new FileRepositoryBuilder();
File gitDir = new File("F:/work/demo-rio/.git");
Repository repository = null;
try {
if (git == null) {
git = Git.open(gitDir);
}
} catch (Exception e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
try {
String cid = str;
repository = builder.setGitDir(gitDir).readEnvironment().findGitDir().build();
RevWalk walk = new RevWalk(repository);
ObjectId objId = ObjectId.fromString(cid);
RevCommit commit = walk.parseCommit(objId);
System.out.println(commit.getFullMessage());
TreeWalk tw = new TreeWalk(repository);
RevCommit[] parent_commits = commit.getParents();
if (parent_commits.length == 0) {
throw new Exception("当前只有一个版本");
}
ObjectId objId2 = parent_commits[0].toObjectId();
RevCommit paren_commit = walk.parseCommit(objId2);
tw.addTree(paren_commit.getTree());
tw.addTree(commit.getTree());
tw.setRecursive(true);
ByteArrayOutputStream out = new ByteArrayOutputStream();
DiffFormatter df = new DiffFormatter(out);
df.setRepository(git.getRepository());
RenameDetector rd = new RenameDetector(repository);
rd.addAll(DiffEntry.scan(tw));
List<DiffEntry> diffEntries = rd.compute();
if (diffEntries != null || diffEntries.size() != 0) {
Iterator<DiffEntry> iterator = new ArrayList<DiffEntry>(diffEntries).iterator();
DiffEntry diffEntry = null;
while (iterator.hasNext()) {
diffEntry = iterator.next();
String changeType = diffEntry.getChangeType().toString();
String type = "";
if (changeType.equals("DELETE")) {
type = ConfigUtil.getFileType(diffEntry.getOldPath());
filenubs++;
System.out.println(diffEntry.getOldPath());
} else {
type = ConfigUtil.getFileType(diffEntry.getNewPath());
filenubs++;
System.out.println(diffEntry.getNewPath());
}
// 检查文件的后缀
// System.out.println(type);
if (fileTypes.contains(type)) {
df.format(diffEntry);
String diffText = out.toString("UTF-8");
lines += scanDiffText(diffText);
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
return filenubs + "&" + lines;
// System.out.println("the changed file nubs: "+ filenubs);
// System.out.println("the changed linr nubs: "+ lines);
}