Cache all queries for refs based on ID

At least then they won't appear as a source of leaking and in the future
the main view can be reloaded without having to deal freeing them.

diff --git a/tig.c b/tig.c
index be165b9..faf9193 100644 (file)
--- a/tig.c
+++ b/tig.c
@@ -2197,39 +2197,57 @@ init_display(void)
 static struct ref *refs;
 static size_t refs_size;
 
+/* Id <-> ref store */
+static struct ref ***id_refs;
+static size_t id_refs_size;
+
 static struct ref **
 get_refs(char *id)
 {
-       struct ref **id_refs = NULL;
-       size_t id_refs_size = 0;
+       struct ref ***tmp_id_refs;
+       struct ref **ref_list = NULL;
+       size_t ref_list_size = 0;
        size_t i;
 
+       for (i = 0; i < id_refs_size; i++)
+               if (!strcmp(id, id_refs[i][0]->id))
+                       return id_refs[i];
+
+       tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
+       if (!tmp_id_refs)
+               return NULL;
+
+       id_refs = tmp_id_refs;
+
        for (i = 0; i < refs_size; i++) {
                struct ref **tmp;
 
                if (strcmp(id, refs[i].id))
                        continue;
 
-               tmp = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
+               tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list));
                if (!tmp) {
-                       if (id_refs)
-                               free(id_refs);
+                       if (ref_list)
+                               free(ref_list);
                        return NULL;
                }
 
-               id_refs = tmp;
-               if (id_refs_size > 0)
-                       id_refs[id_refs_size - 1]->next = 1;
-               id_refs[id_refs_size] = &refs[i];
+               ref_list = tmp;
+               if (ref_list_size > 0)
+                       ref_list[ref_list_size - 1]->next = 1;
+               ref_list[ref_list_size] = &refs[i];
 
                /* XXX: The properties of the commit chains ensures that we can
                 * safely modify the shared ref. The repo references will
                 * always be similar for the same id. */
-               id_refs[id_refs_size]->next = 0;
-               id_refs_size++;
+               ref_list[ref_list_size]->next = 0;
+               ref_list_size++;
        }
 
-       return id_refs;
+       if (ref_list)
+               id_refs[id_refs_size++] = ref_list;
+
+       return ref_list;
 }
 
 static int