From 9d5ab9625ddb53a68a99516225d0bcb39ec473d5 Mon Sep 17 00:00:00 2001 From: Junio C Hamano Date: Tue, 28 Jun 2005 17:49:27 -0700 Subject: [PATCH] [PATCH] Emit base objects of a delta chain when the delta is output. Deltas are useless by themselves and when you use them you need to get to their base objects. A base object should inherit recency from the most recent deltified object that is based on it and that is what this patch teaches git-pack-objects. Signed-off-by: Junio C Hamano Signed-off-by: Linus Torvalds --- pack-objects.c | 25 ++++++++++++++++++++----- 1 file changed, 20 insertions(+), 5 deletions(-) diff --git a/pack-objects.c b/pack-objects.c index 36f515b7..feee5600 100644 --- a/pack-objects.c +++ b/pack-objects.c @@ -118,6 +118,23 @@ static unsigned long write_object(struct sha1file *f, struct object_entry *entry return hdrlen + datalen; } +static unsigned long write_one(struct sha1file *f, + struct object_entry *e, + unsigned long offset) +{ + if (e->offset) + /* offset starts from header size and cannot be zero + * if it is written already. + */ + return offset; + e->offset = offset; + offset += write_object(f, e); + /* if we are delitified, write out its base object. */ + if (e->delta) + offset = write_one(f, e->delta, offset); + return offset; +} + static void write_pack_file(void) { int i; @@ -135,11 +152,9 @@ static void write_pack_file(void) hdr.hdr_entries = htonl(nr_objects); sha1write(f, &hdr, sizeof(hdr)); offset = sizeof(hdr); - for (i = 0; i < nr_objects; i++) { - struct object_entry *entry = objects + i; - entry->offset = offset; - offset += write_object(f, entry); - } + for (i = 0; i < nr_objects; i++) + offset = write_one(f, objects + i, offset); + sha1close(f, pack_file_sha1, 1); mb = offset >> 20; offset &= 0xfffff; -- 2.11.0