Jonathan Tan <jonathantanmy@xxxxxxxxxx> writes:
> In commit 46f0344 ("sha1_file: support reading from a loose object of
> unknown type", 2015-05-06), "struct object_info" gained a "typename"
> field that could represent a type name from a loose object file, whether
> valid or invalid, as opposed to the existing "typep" which could only
> represent valid types. Some relatively complex manipulations were added
> to avoid breaking packed_object_info() without modifying it, but it is
> much easier to just teach packed_object_info() about the new field.
> Therefore, teach packed_object_info() as described above.
>
> Signed-off-by: Jonathan Tan <jonathantanmy@xxxxxxxxxx>
> ---
> sha1_file.c | 29 ++++++++++++-----------------
> 1 file changed, 12 insertions(+), 17 deletions(-)
>
> diff --git a/sha1_file.c b/sha1_file.c
> index 59a4ed2ed..a52b27541 100644
> --- a/sha1_file.c
> +++ b/sha1_file.c
> @@ -2277,9 +2277,18 @@ int packed_object_info(struct packed_git *p, off_t obj_offset,
> *oi->disk_sizep = revidx[1].offset - obj_offset;
> }
>
> - if (oi->typep) {
> - *oi->typep = packed_to_object_type(p, obj_offset, type, &w_curs, curpos);
> - if (*oi->typep < 0) {
> + if (oi->typep || oi->typename) {
> + enum object_type ptot;
> + ptot = packed_to_object_type(p, obj_offset, type, &w_curs,
> + curpos);
> + if (oi->typep)
> + *oi->typep = ptot;
> + if (oi->typename) {
> + const char *tn = typename(ptot);
> + if (tn)
> + strbuf_addstr(oi->typename, tn);
> + }
> + if (ptot < 0) {
> type = OBJ_BAD;
> goto out;
> }
OK. When the caller wants to learn typename, we need to do this
type-to-string conversion somewhere anyway, and I agree that it is
better to do it here, instead of in the caller.
> @@ -2960,7 +2969,6 @@ int sha1_object_info_extended(const unsigned char *sha1, struct object_info *oi,
> struct cached_object *co;
> struct pack_entry e;
> int rtype;
> - enum object_type real_type;
> const unsigned char *real = lookup_replace_object_extended(sha1, flags);
>
> co = find_cached_object(real);
> @@ -2992,18 +3000,9 @@ int sha1_object_info_extended(const unsigned char *sha1, struct object_info *oi,
> return -1;
> }
>
> - /*
> - * packed_object_info() does not follow the delta chain to
> - * find out the real type, unless it is given oi->typep.
> - */
> - if (oi->typename && !oi->typep)
> - oi->typep = &real_type;
> -
> rtype = packed_object_info(e.p, e.offset, oi);
> if (rtype < 0) {
> mark_bad_packed_object(e.p, real);
> - if (oi->typep == &real_type)
> - oi->typep = NULL;
> return sha1_object_info_extended(real, oi, 0);
> } else if (in_delta_base_cache(e.p, e.offset)) {
> oi->whence = OI_DBCACHED;
> @@ -3014,10 +3013,6 @@ int sha1_object_info_extended(const unsigned char *sha1, struct object_info *oi,
> oi->u.packed.is_delta = (rtype == OBJ_REF_DELTA ||
> rtype == OBJ_OFS_DELTA);
> }
> - if (oi->typename)
> - strbuf_addstr(oi->typename, typename(*oi->typep));
> - if (oi->typep == &real_type)
> - oi->typep = NULL;
>
> return 0;
> }