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@xxxxxxxx>
---
cache.h | 11 +++++++++++
sha1_file.c | 62 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 73 insertions(+)
diff --git a/cache.h b/cache.h
index 7abe7f6..3826b4b 100644
--- a/cache.h
+++ b/cache.h
@@ -1270,6 +1270,17 @@ int for_each_loose_file_in_objdir(const char *path,
each_loose_subdir_fn subdir_cb,
void *data);
+/*
+ * Iterate over loose and packed objects in both the local
+ * repository and any alternates repositories.
+ */
+typedef int each_packed_object_fn(const unsigned char *sha1,
+ struct packed_git *pack,
+ uint32_t pos,
+ void *data);
+extern int for_each_loose_object(each_loose_object_fn, void *);
+extern int for_each_packed_object(each_packed_object_fn, void *);
+
struct object_info {
/* Request */
enum object_type *typep;
diff --git a/sha1_file.c b/sha1_file.c
index 9fdad47..d017289 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -3313,3 +3313,65 @@ 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);
+}
+
+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 0;
+}
--
2.1.1.566.gdb1f904
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