[PATCH v2 04/12] commit-graph: parse commit from chosen graph

[Derrick Stolee]

Before verifying a commit-graph file against the object database, we
need to parse all commits from the given commit-graph file. Create
parse_commit_in_graph_one() to target a given struct commit_graph.

Signed-off-by: Derrick Stolee <dsto...@microsoft.com>
---
 commit-graph.c | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/commit-graph.c b/commit-graph.c
index d2db20e49a..4dfff7e752 100644
--- a/commit-graph.c
+++ b/commit-graph.c
@@ -309,7 +309,7 @@ static int find_commit_in_graph(struct commit *item, struct 
commit_graph *g, uin
        }
 }
 
-int parse_commit_in_graph(struct commit *item)
+int parse_commit_in_graph_one(struct commit_graph *g, struct commit *item)
 {
        uint32_t pos;
 
@@ -317,9 +317,21 @@ int parse_commit_in_graph(struct commit *item)
                return 0;
        if (item->object.parsed)
                return 1;
+
+       if (find_commit_in_graph(item, g, &pos))
+               return fill_commit_in_graph(item, g, pos);
+
+       return 0;
+}
+
+int parse_commit_in_graph(struct commit *item)
+{
+       if (!core_commit_graph)
+               return 0;
+
        prepare_commit_graph();
-       if (commit_graph && find_commit_in_graph(item, commit_graph, &pos))
-               return fill_commit_in_graph(item, commit_graph, pos);
+       if (commit_graph)
+               return parse_commit_in_graph_one(commit_graph, item);
        return 0;
 }
 
-- 
2.16.2.329.gfb62395de6