commit-graph: Introduce a parser for commit-graph files

This change is the first in a series to add support for git's
commit-graph. This should speed up commit graph traversals by avoiding
object parsing and allowing some operations to terminate earlier.

Part of: #5757

1 files changed, 20 insertions, 0 deletions

diff --git a/tests/graph/commit_graph.c b/tests/graph/commit_graph.c
new file mode 100644
index 000000000..329aa5b00
--- /dev/null
+++ b/tests/graph/commit_graph.c
@@ -0,0 +1,20 @@
+#include "clar_libgit2.h"
+
+#include <git2.h>
+
+#include "commit_graph.h"
+
+void test_graph_commit_graph__parse(void)
+{
+	git_repository *repo;
+	struct git_commit_graph_file *cgraph;
+	git_buf commit_graph_path = GIT_BUF_INIT;
+
+	cl_git_pass(git_repository_open(&repo, cl_fixture("testrepo.git")));
+	cl_git_pass(git_buf_joinpath(&commit_graph_path, git_repository_path(repo), "objects/info/commit-graph"));
+	cl_git_pass(git_commit_graph_open(&cgraph, git_buf_cstr(&commit_graph_path)));
+
+	git_commit_graph_free(cgraph);
+	git_repository_free(repo);
+	git_buf_dispose(&commit_graph_path);
+}