hooks-pre-commit: use \t, rather than a literal TAB in regexp
[gitweb.git] / builtin-rev-list.c
index 86db8b03fe4295497cf011a75617d6dc8f172c64..33726b8d8426b4878ed63184dc280957ba4434e0 100644 (file)
@@ -70,21 +70,9 @@ static void show_commit(struct commit *commit)
        if (revs.parents) {
                struct commit_list *parents = commit->parents;
                while (parents) {
-                       struct object *o = &(parents->item->object);
+                       printf(" %s", sha1_to_hex(parents->item->object.sha1));
                        parents = parents->next;
-                       if (o->flags & TMP_MARK)
-                               continue;
-                       printf(" %s", sha1_to_hex(o->sha1));
-                       o->flags |= TMP_MARK;
                }
-               /* TMP_MARK is a general purpose flag that can
-                * be used locally, but the user should clean
-                * things up after it is done with them.
-                */
-               for (parents = commit->parents;
-                    parents;
-                    parents = parents->next)
-                       parents->item->object.flags &= ~TMP_MARK;
        }
        if (revs.commit_format == CMIT_FMT_ONELINE)
                putchar(' ');
@@ -92,13 +80,13 @@ static void show_commit(struct commit *commit)
                putchar('\n');
 
        if (revs.verbose_header) {
-               char *buf = NULL;
-               unsigned long buflen = 0;
-               pretty_print_commit(revs.commit_format, commit, ~0,
-                                   &buf, &buflen,
-                                   revs.abbrev, NULL, NULL, revs.date_mode);
-               printf("%s%c", buf, hdr_termination);
-               free(buf);
+               struct strbuf buf;
+               strbuf_init(&buf, 0);
+               pretty_print_commit(revs.commit_format, commit,
+                                       &buf, revs.abbrev, NULL, NULL, revs.date_mode);
+               if (buf.len)
+                       printf("%s%c", buf.buf, hdr_termination);
+               strbuf_release(&buf);
        }
        maybe_flush_or_die(stdout, "stdout");
        if (commit->parents) {
@@ -201,7 +189,7 @@ static int count_interesting_parents(struct commit *commit)
        return count;
 }
 
-static inline int halfway(struct commit_list *p, int distance, int nr)
+static inline int halfway(struct commit_list *p, int nr)
 {
        /*
         * Don't short-cut something we are not going to return!
@@ -214,8 +202,7 @@ static inline int halfway(struct commit_list *p, int distance, int nr)
         * 2 and 3 are halfway of 5.
         * 3 is halfway of 6 but 2 and 4 are not.
         */
-       distance *= 2;
-       switch (distance - nr) {
+       switch (2 * weight(p) - nr) {
        case -1: case 0: case 1:
                return 1;
        default:
@@ -267,6 +254,30 @@ static void show_list(const char *debug, int counted, int nr,
 }
 #endif /* DEBUG_BISECT */
 
+static struct commit_list *best_bisection(struct commit_list *list, int nr)
+{
+       struct commit_list *p, *best;
+       int best_distance = -1;
+
+       best = list;
+       for (p = list; p; p = p->next) {
+               int distance;
+               unsigned flags = p->item->object.flags;
+
+               if (revs.prune_fn && !(flags & TREECHANGE))
+                       continue;
+               distance = weight(p);
+               if (nr - distance < distance)
+                       distance = nr - distance;
+               if (distance > best_distance) {
+                       best = p;
+                       best_distance = distance;
+               }
+       }
+
+       return best;
+}
+
 /*
  * zero or positive weight is the number of interesting commits it can
  * reach, including itself.  Especially, weight = 0 means it does not
@@ -280,39 +291,12 @@ static void show_list(const char *debug, int counted, int nr,
  * unknown.  After running count_distance() first, they will get zero
  * or positive distance.
  */
-
-static struct commit_list *find_bisection(struct commit_list *list,
-                                         int *reaches, int *all)
+static struct commit_list *do_find_bisection(struct commit_list *list,
+                                            int nr, int *weights)
 {
-       int n, nr, on_list, counted, distance;
-       struct commit_list *p, *best, *next, *last;
-       int *weights;
-
-       show_list("bisection 2 entry", 0, 0, list);
-
-       /*
-        * Count the number of total and tree-changing items on the
-        * list, while reversing the list.
-        */
-       for (nr = on_list = 0, last = NULL, p = list;
-            p;
-            p = next) {
-               unsigned flags = p->item->object.flags;
-
-               next = p->next;
-               if (flags & UNINTERESTING)
-                       continue;
-               p->next = last;
-               last = p;
-               if (!revs.prune_fn || (flags & TREECHANGE))
-                       nr++;
-               on_list++;
-       }
-       list = last;
-       show_list("bisection 2 sorted", 0, nr, list);
+       int n, counted;
+       struct commit_list *p;
 
-       *all = nr;
-       weights = xcalloc(on_list, sizeof(int*));
        counted = 0;
 
        for (n = 0, p = list; p; p = p->next) {
@@ -361,20 +345,14 @@ static struct commit_list *find_bisection(struct commit_list *list,
        for (p = list; p; p = p->next) {
                if (p->item->object.flags & UNINTERESTING)
                        continue;
-               n = weight(p);
-               if (n != -2)
+               if (weight(p) != -2)
                        continue;
-               distance = count_distance(p);
+               weight_set(p, count_distance(p));
                clear_distance(list);
-               weight_set(p, distance);
 
                /* Does it happen to be at exactly half-way? */
-               if (halfway(p, distance, nr)) {
-                       p->next = NULL;
-                       *reaches = distance;
-                       free(weights);
+               if (halfway(p, nr))
                        return p;
-               }
                counted++;
        }
 
@@ -411,38 +389,59 @@ static struct commit_list *find_bisection(struct commit_list *list,
                                weight_set(p, weight(q));
 
                        /* Does it happen to be at exactly half-way? */
-                       distance = weight(p);
-                       if (halfway(p, distance, nr)) {
-                               p->next = NULL;
-                               *reaches = distance;
-                               free(weights);
+                       if (halfway(p, nr))
                                return p;
-                       }
                }
        }
 
        show_list("bisection 2 counted all", counted, nr, list);
 
        /* Then find the best one */
-       counted = -1;
-       best = list;
-       for (p = list; p; p = p->next) {
+       return best_bisection(list, nr);
+}
+
+static struct commit_list *find_bisection(struct commit_list *list,
+                                         int *reaches, int *all)
+{
+       int nr, on_list;
+       struct commit_list *p, *best, *next, *last;
+       int *weights;
+
+       show_list("bisection 2 entry", 0, 0, list);
+
+       /*
+        * Count the number of total and tree-changing items on the
+        * list, while reversing the list.
+        */
+       for (nr = on_list = 0, last = NULL, p = list;
+            p;
+            p = next) {
                unsigned flags = p->item->object.flags;
 
-               if (revs.prune_fn && !(flags & TREECHANGE))
+               next = p->next;
+               if (flags & UNINTERESTING)
                        continue;
-               distance = weight(p);
-               if (nr - distance < distance)
-                       distance = nr - distance;
-               if (distance > counted) {
-                       best = p;
-                       counted = distance;
-                       *reaches = weight(p);
-               }
+               p->next = last;
+               last = p;
+               if (!revs.prune_fn || (flags & TREECHANGE))
+                       nr++;
+               on_list++;
        }
-       if (best)
+       list = last;
+       show_list("bisection 2 sorted", 0, nr, list);
+
+       *all = nr;
+       weights = xcalloc(on_list, sizeof(*weights));
+
+       /* Do the real work of finding bisection commit. */
+       best = do_find_bisection(list, nr, weights);
+
+       if (best) {
                best->next = NULL;
+               *reaches = weight(best);
+       }
        free(weights);
+
        return best;
 }