common progress display support

Instead of having this code duplicated in multiple places, let's have
a common interface for progress display.  If someday someone wishes to
display a cheezy progress bar instead then only one file will have to
be changed.

Note: I left merge-recursive.c out since it has a strange notion of
progress as it apparently increase the expected total number as it goes.
Someone with more intimate knowledge of what that is supposed to mean
might look at converting it to the common progress interface.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>

1 files changed, 17 insertions, 21 deletions

diff --git a/builtin-unpack-objects.c b/builtin-unpack-objects.c
index f821906460..c370c7f834 100644
--- a/builtin-unpack-objects.c
+++ b/builtin-unpack-objects.c
@@ -7,6 +7,7 @@
 #include "commit.h"
 #include "tag.h"
 #include "tree.h"
+#include "progress.h"
 
 static int dry_run, quiet, recover, has_errors;
 static const char unpack_usage[] = "git-unpack-objects [-n] [-q] [-r] < pack-file";
@@ -264,7 +265,7 @@ static void unpack_delta_entry(enum object_type type, unsigned long delta_size,
 	free(base);
 }
 
-static void unpack_one(unsigned nr, unsigned total)
+static void unpack_one(unsigned nr)
 {
 	unsigned shift;
 	unsigned char *pack, c;
@@ -286,20 +287,7 @@ static void unpack_one(unsigned nr, unsigned total)
 		size += (c & 0x7f) << shift;
 		shift += 7;
 	}
-	if (!quiet) {
-		static unsigned long last_sec;
-		static unsigned last_percent;
-		struct timeval now;
-		unsigned percentage = ((nr+1) * 100) / total;
-
-		gettimeofday(&now, NULL);
-		if (percentage != last_percent || now.tv_sec != last_sec) {
-			last_sec = now.tv_sec;
-			last_percent = percentage;
-			fprintf(stderr, "%4u%% (%u/%u) done\r",
-					percentage, (nr+1), total);
-		}
-	}
+
 	switch (type) {
 	case OBJ_COMMIT:
 	case OBJ_TREE:
@@ -323,6 +311,7 @@ static void unpack_one(unsigned nr, unsigned total)
 static void unpack_all(void)
 {
 	int i;
+	struct progress progress;
 	struct pack_header *hdr = fill(sizeof(struct pack_header));
 	unsigned nr_objects = ntohl(hdr->hdr_entries);
 
@@ -330,12 +319,21 @@ static void unpack_all(void)
 		die("bad pack file");
 	if (!pack_version_ok(hdr->hdr_version))
 		die("unknown pack file version %d", ntohl(hdr->hdr_version));
-	fprintf(stderr, "Unpacking %d objects\n", nr_objects);
+	use(sizeof(struct pack_header));
 
+	if (!quiet) {
+		fprintf(stderr, "Unpacking %d objects\n", nr_objects);
+		start_progress(&progress, "", nr_objects);
+	}
 	obj_list = xmalloc(nr_objects * sizeof(*obj_list));
-	use(sizeof(struct pack_header));
-	for (i = 0; i < nr_objects; i++)
-		unpack_one(i, nr_objects);
+	for (i = 0; i < nr_objects; i++) {
+		unpack_one(i);
+		if (!quiet)
+			display_progress(&progress, i + 1);
+	}
+	if (!quiet)
+		stop_progress(&progress);
+
 	if (delta_list)
 		die("unresolved deltas left after unpacking");
 }
@@ -404,7 +402,5 @@ int cmd_unpack_objects(int argc, const char **argv, const char *prefix)
 	}
 
 	/* All done */
-	if (!quiet)
-		fprintf(stderr, "\n");
 	return has_errors;
 }