commit-graph: add '--reachable' option

diff --git a/commit-graph.c b/commit-graph.c
index 5b7fa707a5201b8b376463e220cdb53d96f660b8..212232e752a812c7707d174fcf19db5f0eb02010 100644 (file)
--- a/commit-graph.c
+++ b/commit-graph.c
@@ -7,6 +7,7 @@
 #include "packfile.h"
 #include "commit.h"
 #include "object.h"
+#include "refs.h"
 #include "revision.h"
 #include "sha1-lookup.h"
 #include "commit-graph.h"
@@ -656,6 +657,25 @@ static void compute_generation_numbers(struct packed_commit_list* commits)
        }
 }
 
+static int add_ref_to_list(const char *refname,
+                          const struct object_id *oid,
+                          int flags, void *cb_data)
+{
+       struct string_list *list = (struct string_list *)cb_data;
+
+       string_list_append(list, oid_to_hex(oid));
+       return 0;
+}
+
+void write_commit_graph_reachable(const char *obj_dir, int append)
+{
+       struct string_list list;
+
+       string_list_init(&list, 1);
+       for_each_ref(add_ref_to_list, &list);
+       write_commit_graph(obj_dir, NULL, &list, append);
+}
+
 void write_commit_graph(const char *obj_dir,
                        struct string_list *pack_indexes,
                        struct string_list *commit_hex,