blame: make sanity_check use a callback in scoreboard

Allow the interface user to decide how to handle a failed sanity check,
whether that be to output with the current state or to do nothing.

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 90c643c..1b53325 100644 (file)
--- a/builtin/blame.c
+++ b/builtin/blame.c
@@ -387,6 +387,10 @@ struct blame_scoreboard {
        int show_root;
        int xdl_opts;
        int no_whole_file_rename;
+       int debug;
+
+       /* callbacks */
+       void(*on_sanity_fail)(struct blame_scoreboard *, int);
 };
 
 static void sanity_check_refcnt(struct blame_scoreboard *);
@@ -412,7 +416,7 @@ static void blame_coalesce(struct blame_scoreboard *sb)
                }
        }
 
-       if (DEBUG) /* sanity */
+       if (sb->debug) /* sanity */
                sanity_check_refcnt(sb);
 }
 
@@ -1809,7 +1813,7 @@ static void assign_blame(struct blame_scoreboard *sb, int opt)
                }
                blame_origin_decref(suspect);
 
-               if (DEBUG) /* sanity */
+               if (sb->debug) /* sanity */
                        sanity_check_refcnt(sb);
        }
 
@@ -2148,12 +2152,16 @@ static void sanity_check_refcnt(struct blame_scoreboard *sb)
                        baa = 1;
                }
        }
-       if (baa) {
-               int opt = 0160;
-               find_alignment(sb, &opt);
-               output(sb, opt);
-               die("Baa %d!", baa);
-       }
+       if (baa)
+               sb->on_sanity_fail(sb, baa);
+}
+
+static void sanity_check_on_fail(struct blame_scoreboard *sb, int baa)
+{
+       int opt = OUTPUT_SHOW_SCORE | OUTPUT_SHOW_NUMBER | OUTPUT_SHOW_NAME;
+       find_alignment(sb, &opt);
+       output(sb, opt);
+       die("Baa %d!", baa);
 }
 
 static unsigned parse_score(const char *arg)
@@ -2888,6 +2896,9 @@ parse_done:
        if (blame_copy_score)
                sb.copy_score = blame_copy_score;
 
+       sb.debug = DEBUG;
+       sb.on_sanity_fail = &sanity_check_on_fail;
+
        sb.show_root = show_root;
        sb.xdl_opts = xdl_opts;
        sb.no_whole_file_rename = no_whole_file_rename;