Make git-pack-redundant take a list of unimportant objs on stdin

This lets us do "git-fsck-objects --full --unreachable | cut -d ' ' -f3 |
git-pack-redundant --all", which will keep git-pack-redundant from keeping
packs just because they contain unreachable objects.

Also add some more --verbose output.

Signed-off-by: Lukas Sandström <lukass@etek.chalmers.se>
Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/pack-redundant.c b/pack-redundant.c
index 1519385..9851c29 100644 (file)
--- a/pack-redundant.c
+++ b/pack-redundant.c
@@ -579,6 +579,8 @@ int main(int argc, char **argv)
 {
        int i;
        struct pack_list *min, *red, *pl;
+       struct llist *ignore;
+       char *sha1, buf[42]; /* 40 byte sha1 + \n + \0 */
 
        for (i = 1; i < argc; i++) {
                const char *arg = argv[i];
@@ -621,6 +623,23 @@ int main(int argc, char **argv)
        if (alt_odb)
                scan_alt_odb_packs();
 
+       /* ignore objects given on stdin */
+       llist_init(&ignore);
+       if (!isatty(0)) {
+               while (fgets(buf, sizeof(buf), stdin)) {
+                       sha1 = xmalloc(20);
+                       if (get_sha1_hex(buf, sha1))
+                               die("Bad sha1 on stdin: %s", buf);
+                       llist_insert_sorted_unique(ignore, sha1, NULL);
+               }
+       }
+       llist_sorted_difference_inplace(all_objects, ignore);
+       pl = local_packs;
+       while (pl) {
+               llist_sorted_difference_inplace(pl->unique_objects, ignore);
+               pl = pl->next;
+       }
+
        minimize(&min);
 
        if (verbose) {
@@ -647,6 +666,8 @@ int main(int argc, char **argv)
                       pl->pack->pack_name);
                pl = pl->next;
        }
+       if (verbose)
+               fprintf(stderr, "%luMB of redundant packs in total.\n", pack_set_bytecount(red)/(1024*1024));
 
        return 0;
 }