[PATCH 2/4] Move finding bisection into do_find_bisection.

[Christian Couder <chriscool@tuxfamily.org>]

This factorises some code and make a big function smaller.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
---
 builtin-rev-list.c |   40 +++++++++++++++++++++++++---------------
 1 files changed, 25 insertions(+), 15 deletions(-)

diff --git a/builtin-rev-list.c b/builtin-rev-list.c
index 5bcafe4..4e2524a 100644
--- a/builtin-rev-list.c
+++ b/builtin-rev-list.c
@@ -255,6 +255,9 @@ static void show_list(const char *debug, int counted, int nr,
 }
 #endif /* DEBUG_BISECT */
 
+static struct commit_list *do_find_bisection(struct commit_list *list,
+					     int nr, int *weights);
+
 /*
  * zero or positive weight is the number of interesting commits it can
  * reach, including itself.  Especially, weight = 0 means it does not
@@ -272,7 +275,7 @@ static void show_list(const char *debug, int counted, int nr,
 static struct commit_list *find_bisection(struct commit_list *list,
 					  int *reaches, int *all)
 {
-	int n, nr, on_list, counted, distance;
+	int nr, on_list;
 	struct commit_list *p, *best, *next, *last;
 	int *weights;
 
@@ -301,6 +304,25 @@ static struct commit_list *find_bisection(struct commit_list *list,
 
 	*all = nr;
 	weights = xcalloc(on_list, sizeof(int));
+
+	/* 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;
+}
+
+static struct commit_list *do_find_bisection(struct commit_list *list,
+					     int nr, int *weights)
+{
+	int n, counted, distance;
+	struct commit_list *p, *best;
+
 	counted = 0;
 
 	for (n = 0, p = list; p; p = p->next) {
@@ -357,12 +379,8 @@ static struct commit_list *find_bisection(struct commit_list *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, distance, nr))
 			return p;
-		}
 		counted++;
 	}
 
@@ -400,12 +418,8 @@ static struct commit_list *find_bisection(struct commit_list *list,
 
 			/* 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, distance, nr))
 				return p;
-			}
 		}
 	}
 
@@ -425,12 +439,8 @@ static struct commit_list *find_bisection(struct commit_list *list,
 		if (distance > counted) {
 			best = p;
 			counted = distance;
-			*reaches = weight(p);
 		}
 	}
-	if (best)
-		best->next = NULL;
-	free(weights);
 	return best;
 }
 
-- 
1.5.2.1.144.gabc40