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sha1_file: teach packed_object_info about typename 

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@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jonathan Tan 2017-06-13 14:05:57 -07:00 коммит произвёл Junio C Hamano
Родитель 02a2850ad5
Коммит 285a2984bd
1 изменённых файлов: 12 добавлений и 17 удалений
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29
sha1_file.c
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@ -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;
}
@ -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;
}