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Optimize rename detection in historywalk by implausible · Pull Request #900 · nodegit/nodegit · GitHub

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Optimize rename detection in historywalk #900

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Merged
maxkorp merged 2 commits into from
Feb 10, 2016
Conversation 0 Commits 2 Checks 0 Files changed
Merged

Optimize rename detection in historywalk #900

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c2f6d81
Optimize rename detection in historywalk
implausible Feb 9, 2016
d23ba87
Provide old and new name instead of just altname
implausible Feb 9, 2016
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60 changes: 51 additions & 9 deletions generate/templates/manual/revwalk/file_history_walk.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -55,6 +55,10 @@ void GitRevwalk::FileHistoryWalkWorker::Execute()
}

git_diff *diffs;
git_diff_options opts = GIT_DIFF_OPTIONS_INIT;
char *file_path = strdup(baton->file_path);
opts.pathspec.strings = &file_path;
opts.pathspec.count = 1;
git_commit *parent;
unsigned int parents = git_commit_parentcount(nextCommit);
if (parents > 1) {
Expand All @@ -67,19 +71,23 @@ void GitRevwalk::FileHistoryWalkWorker::Execute()
}
if (
(baton->error_code = git_commit_tree(&parentTree, parent)) != GIT_OK ||
(baton->error_code = git_diff_tree_to_tree(&diffs, repo, parentTree, thisTree, NULL)) != GIT_OK
(baton->error_code = git_diff_tree_to_tree(&diffs, repo, parentTree, thisTree, &opts)) != GIT_OK
) {
git_commit_free(nextCommit);
git_commit_free(parent);
break;
}
} else {
if ((baton->error_code = git_diff_tree_to_tree(&diffs, repo, NULL, thisTree, NULL)) != GIT_OK) {
if ((baton->error_code = git_diff_tree_to_tree(&diffs, repo, NULL, thisTree, &opts)) != GIT_OK) {
git_commit_free(nextCommit);
break;
}
}

free(file_path);
opts.pathspec.strings = NULL;
opts.pathspec.count = 0;

bool flag = false;
bool doRenamedPass = false;
unsigned int numDeltas = git_diff_num_deltas(diffs);
Expand Down Expand Up @@ -127,10 +135,29 @@ void GitRevwalk::FileHistoryWalkWorker::Execute()
}
}

if (
doRenamedPass &&
(baton->error_code = git_diff_find_similar(diffs, NULL)) == GIT_OK
) {
if (doRenamedPass) {
git_diff_free(diffs);

if (parents == 1) {
if ((baton->error_code = git_diff_tree_to_tree(&diffs, repo, parentTree, thisTree, NULL)) != GIT_OK) {
git_commit_free(nextCommit);
break;
}
if ((baton->error_code = git_diff_find_similar(diffs, NULL)) != GIT_OK) {
git_commit_free(nextCommit);
break;
}
} else {
if ((baton->error_code = git_diff_tree_to_tree(&diffs, repo, NULL, thisTree, NULL)) != GIT_OK) {
git_commit_free(nextCommit);
break;
}
if((baton->error_code = git_diff_find_similar(diffs, NULL)) != GIT_OK) {
git_commit_free(nextCommit);
break;
}
}

flag = false;
numDeltas = git_diff_num_deltas(diffs);
for (unsigned int j = 0; j < numDeltas; ++j) {
Expand All @@ -148,13 +175,20 @@ void GitRevwalk::FileHistoryWalkWorker::Execute()
const git_diff_delta *delta = git_patch_get_delta(nextPatch);
bool isEqualOldFile = !strcmp(delta->old_file.path, baton->file_path);
bool isEqualNewFile = !strcmp(delta->new_file.path, baton->file_path);
int oldLen = strlen(delta->old_file.path);
int newLen = strlen(delta->new_file.path);
char *outPair = new char[oldLen + newLen + 2];
strcpy(outPair, delta->new_file.path);
outPair[newLen] = '\n';
outPair[newLen + 1] = '\0';
strcat(outPair, delta->old_file.path);

if (isEqualNewFile) {
std::pair<git_commit *, std::pair<char *, git_delta_t> > *historyEntry;
if (!isEqualOldFile) {
historyEntry = new std::pair<git_commit *, std::pair<char *, git_delta_t> >(
nextCommit,
std::pair<char *, git_delta_t>(strdup(delta->old_file.path), delta->status)
std::pair<char *, git_delta_t>(strdup(outPair), delta->status)
);
} else {
historyEntry = new std::pair<git_commit *, std::pair<char *, git_delta_t> >(
Expand All @@ -168,12 +202,14 @@ void GitRevwalk::FileHistoryWalkWorker::Execute()
std::pair<git_commit *, std::pair<char *, git_delta_t> > *historyEntry;
historyEntry = new std::pair<git_commit *, std::pair<char *, git_delta_t> >(
nextCommit,
std::pair<char *, git_delta_t>(strdup(delta->new_file.path), delta->status)
std::pair<char *, git_delta_t>(strdup(outPair), delta->status)
);
baton->out->push_back(historyEntry);
flag = true;
}

delete[] outPair;

git_patch_free(nextPatch);

if (flag) {
Expand Down Expand Up @@ -228,7 +264,13 @@ void GitRevwalk::FileHistoryWalkWorker::HandleOKCallback()
Nan::Set(historyEntry, Nan::New("commit").ToLocalChecked(), GitCommit::New(batonResult->first, true));
Nan::Set(historyEntry, Nan::New("status").ToLocalChecked(), Nan::New<Number>(batonResult->second.second));
if (batonResult->second.second == GIT_DELTA_RENAMED) {
Nan::Set(historyEntry, Nan::New("altname").ToLocalChecked(), Nan::New(batonResult->second.first).ToLocalChecked());
char *namePair = batonResult->second.first;
char *split = strchr(namePair, '\n');
*split = '\0';
char *oldName = split + 1;

Nan::Set(historyEntry, Nan::New("oldName").ToLocalChecked(), Nan::New(oldName).ToLocalChecked());
Nan::Set(historyEntry, Nan::New("newName").ToLocalChecked(), Nan::New(namePair).ToLocalChecked());
}
Nan::Set(result, Nan::New<Number>(i), historyEntry);

Expand Down
4 changes: 3 additions & 1 deletion lib/revwalk.js
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Expand Up @@ -129,7 +129,9 @@ Revwalk.prototype.getCommits = function(count) {
* @type {Object}
* @property {Commit} commit the commit for this entry
* @property {Number} status the status of the file in the commit
* @property {String} altname the other name that is provided when status is
* @property {String} newName the new name that is provided when status is
* renamed
* @property {String} oldName the old name that is provided when status is
* renamed
*/

Expand Down
6 changes: 4 additions & 2 deletions test/tests/revwalk.js
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Expand Up @@ -286,7 +286,8 @@ describe("Revwalk", function() {
})
.then(function(results) {
assert.equal(results[0].status, NodeGit.Diff.DELTA.RENAMED);
assert.equal(results[0].altname, fileNameA);
assert.equal(results[0].newName, fileNameB);
assert.equal(results[0].oldName, fileNameA);
})
.then(function() {
var walker = repo.createRevWalk();
Expand All @@ -296,7 +297,8 @@ describe("Revwalk", function() {
})
.then(function(results) {
assert.equal(results[0].status, NodeGit.Diff.DELTA.RENAMED);
assert.equal(results[0].altname, fileNameB);
assert.equal(results[0].newName, fileNameB);
assert.equal(results[0].oldName, fileNameA);
})
.then(function() {
return fse.remove(repoPath);
Expand Down
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