[PATCH 2/4] log: add --count option to git log

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adds --count from git rev-list to git log, without --use-bitmap-index
for the moment.

Signed-off-by: Lawrence Siebert <lawrencesiebert@xxxxxxxxx>
---
 builtin/log.c | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/builtin/log.c b/builtin/log.c
index 8781049..ce6df1e 100644
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -25,6 +25,7 @@
 #include "version.h"
 #include "mailmap.h"
 #include "gpg-interface.h"
+#include "list-objects.h"
 
 /* Set a default date-time format for git log ("log.date" config variable) */
 static const char *default_date_mode = NULL;
@@ -317,12 +318,40 @@ static void finish_early_output(struct rev_info *rev)
 	show_early_header(rev, "done", n);
 }
 
+static void show_object(struct object *obj,
+			const struct name_path *path, const char *component,
+			void *cb_data)
+{
+	return;
+}
+
+static void show_commit(struct commit *commit, void *data)
+{
+	struct rev_info *revs = (struct rev_info *)data;
+	if (commit->object.flags & PATCHSAME)
+		revs->count_same++;
+	else if (commit->object.flags & SYMMETRIC_LEFT)
+		revs->count_left++;
+	else
+		revs->count_right++;
+	if (commit->parents) {
+		free_commit_list(commit->parents);
+		commit->parents = NULL;
+	}
+	free_commit_buffer(commit);
+}
+
 static int cmd_log_walk(struct rev_info *rev)
 {
 	struct commit *commit;
 	int saved_nrl = 0;
 	int saved_dcctc = 0;
 
+	if (rev->count) {
+		prepare_revision_walk(rev);	
+		traverse_commit_list(rev, show_commit, show_object, rev);
+		get_commit_count(rev);
+	}
 	if (rev->early_output)
 		setup_early_output(rev);
 
-- 
1.9.1

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