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authorJeff King <peff@peff.net>2014-10-15 18:41:21 -0400
committerJunio C Hamano <gitster@pobox.com>2014-10-16 10:10:41 -0700
commit660c889e46d185dc98ba78963528826728b0a55d (patch)
treef70f42402438859d21623c290330cca9bc54a979 /sha1_file.c
parent4a1e693a30c816fa5293c5f9e83e1e98ee87584e (diff)
downloadgit-660c889e46d185dc98ba78963528826728b0a55d.tar.gz
sha1_file: add for_each iterators for loose and packed objects
We typically iterate over the reachable objects in a repository by starting at the tips and walking the graph. There's no easy way to iterate over all of the objects, including unreachable ones. Let's provide a way of doing so. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'sha1_file.c')
-rw-r--r--sha1_file.c62
1 files changed, 62 insertions, 0 deletions
diff --git a/sha1_file.c b/sha1_file.c
index fa08475c91..55c65b7ef6 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -3348,3 +3348,65 @@ int for_each_loose_file_in_objdir(const char *path,
strbuf_release(&buf);
return r;
}
+
+struct loose_alt_odb_data {
+ each_loose_object_fn *cb;
+ void *data;
+};
+
+static int loose_from_alt_odb(struct alternate_object_database *alt,
+ void *vdata)
+{
+ struct loose_alt_odb_data *data = vdata;
+ return for_each_loose_file_in_objdir(alt->base,
+ data->cb, NULL, NULL,
+ data->data);
+}
+
+int for_each_loose_object(each_loose_object_fn cb, void *data)
+{
+ struct loose_alt_odb_data alt;
+ int r;
+
+ r = for_each_loose_file_in_objdir(get_object_directory(),
+ cb, NULL, NULL, data);
+ if (r)
+ return r;
+
+ alt.cb = cb;
+ alt.data = data;
+ return foreach_alt_odb(loose_from_alt_odb, &alt);
+}
+
+static int for_each_object_in_pack(struct packed_git *p, each_packed_object_fn cb, void *data)
+{
+ uint32_t i;
+ int r = 0;
+
+ for (i = 0; i < p->num_objects; i++) {
+ const unsigned char *sha1 = nth_packed_object_sha1(p, i);
+
+ if (!sha1)
+ return error("unable to get sha1 of object %u in %s",
+ i, p->pack_name);
+
+ r = cb(sha1, p, i, data);
+ if (r)
+ break;
+ }
+ return r;
+}
+
+int for_each_packed_object(each_packed_object_fn cb, void *data)
+{
+ struct packed_git *p;
+ int r = 0;
+
+ prepare_packed_git();
+ for (p = packed_git; p; p = p->next) {
+ r = for_each_object_in_pack(p, cb, data);
+ if (r)
+ break;
+ }
+ return r;
+}