blame: create entry prepend function

Create function that populates a blame_entry and prepends it to a list.

Signed-off-by: Jeff Smith <whydoubt@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/blame.c b/builtin/blame.c
index fd415519bc7cb0db3f75214e8791f2417d691ab8..29771b7112e31354b0d07f9c73eb26ecb25718aa 100644 (file)
--- a/builtin/blame.c
+++ b/builtin/blame.c
@@ -2643,6 +2643,20 @@ void setup_scoreboard(struct blame_scoreboard *sb, const char *path, struct blam
                *orig = o;
 }
 
+struct blame_entry *blame_entry_prepend(struct blame_entry *head,
+                                       long start, long end,
+                                       struct blame_origin *o)
+{
+       struct blame_entry *new_head = xcalloc(1, sizeof(struct blame_entry));
+       new_head->lno = start;
+       new_head->num_lines = end - start;
+       new_head->suspect = o;
+       new_head->s_lno = start;
+       new_head->next = head;
+       blame_origin_incref(o);
+       return new_head;
+}
+
 int cmd_blame(int argc, const char **argv, const char *prefix)
 {
        struct rev_info revs;
@@ -2885,16 +2899,7 @@ int cmd_blame(int argc, const char **argv, const char *prefix)
 
        for (range_i = ranges.nr; range_i > 0; --range_i) {
                const struct range *r = &ranges.ranges[range_i - 1];
-               long bottom = r->start;
-               long top = r->end;
-               struct blame_entry *next = ent;
-               ent = xcalloc(1, sizeof(*ent));
-               ent->lno = bottom;
-               ent->num_lines = top - bottom;
-               ent->suspect = o;
-               ent->s_lno = bottom;
-               ent->next = next;
-               blame_origin_incref(o);
+               ent = blame_entry_prepend(ent, r->start, r->end, o);
        }
 
        o->suspects = ent;