static git_commit* FindFileRecentCommit(git_repository* repository, const CString& path)
{
CAutoRevwalk walk;
if (git_revwalk_new(walk.GetPointer(), repository))
return nullptr;
CStringA pathA = CUnicodeUtils::GetUTF8(path);
if (pathA.GetLength() >= MAX_PATH)
return nullptr;
const char *pathC = pathA;
char folder[MAX_PATH] = {0}, file[MAX_PATH] = {0};
const char *slash = strrchr(pathC, '/');
if (slash)
{
strncpy(folder, pathC, slash - pathC + 1);
folder[slash - pathC + 1] = '\0';
strcpy(file, slash + 1);
}
else
{
folder[0] = '\0';
strcpy(file, pathC);
}
TreewalkStruct treewalkstruct = { folder, file };
if (git_revwalk_push_head(walk))
return nullptr;
git_oid oid;
CAutoCommit commit;
while (!git_revwalk_next(&oid, walk))
{
if (git_commit_lookup(commit.GetPointer(), repository, &oid))
return nullptr;
CAutoTree tree;
if (git_commit_tree(tree.GetPointer(), commit))
return nullptr;
memset(&treewalkstruct.oid.id, 0, sizeof(treewalkstruct.oid.id));
int ret = git_tree_walk(tree, GIT_TREEWALK_PRE, TreewalkCB_FindFileRecentCommit, &treewalkstruct);
if (ret < 0 && ret != GIT_EUSER)
return nullptr;
// check if file not found
if (git_oid_iszero(&treewalkstruct.oid))
return nullptr;
bool diff = true;
// for merge point, check if it is different to all parents, if yes then there are real change in the merge point.
// if no parent then of course it is different
for (unsigned int i = 0; i < git_commit_parentcount(commit); ++i)
{
CAutoCommit commit2;
if (git_commit_parent(commit2.GetPointer(), commit, i))
return nullptr;
CAutoTree tree2;
if (git_commit_tree(tree2.GetPointer(), commit2))
return nullptr;
TreewalkStruct treewalkstruct2 = { folder, file };
memset(&treewalkstruct2.oid.id, 0, sizeof(treewalkstruct2.oid.id));
int ret = git_tree_walk(tree2, GIT_TREEWALK_PRE, TreewalkCB_FindFileRecentCommit, &treewalkstruct2);
if (ret < 0 && ret != GIT_EUSER)
return nullptr;
if (!git_oid_cmp(&treewalkstruct.oid, &treewalkstruct2.oid))
diff = false;
else if (git_revwalk_hide(walk, git_commit_parent_id(commit, i)))
return nullptr;
}
if (diff)
break;
}
return commit.Detach();
}
