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each_ref_fn: change to take an object_id parameter

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Change typedef each_ref_fn to take a "const struct object_id *oid"
parameter instead of "const unsigned char *sha1".

To aid this transition, implement an adapter that can be used to wrap
old-style functions matching the old typedef, which is now called
"each_ref_sha1_fn"), and make such functions callable via the new
interface. This requires the old function and its cb_data to be
wrapped in a "struct each_ref_fn_sha1_adapter", and that object to be
used as the cb_data for an adapter function, each_ref_fn_adapter().

This is an enormous diff, but most of it consists of simple,
mechanical changes to the sites that call any of the "for_each_ref"
family of functions. Subsequent to this change, the call sites can be
rewritten one by one to use the new interface.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Michael Haggerty
2015-05-25 18:38:28 +00:00
committed by Junio C Hamano
parent 8353847e85
commit 2b2a5be394
36 changed files with 275 additions and 97 deletions
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9
http-backend.c
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@ -395,8 +395,11 @@ static void get_info_refs(char *arg)
run_service(argv);
} else {
struct each_ref_fn_sha1_adapter wrapped_show_text_ref =
{show_text_ref, &buf};
select_getanyfile();
for_each_namespaced_ref(show_text_ref, &buf);
for_each_namespaced_ref(each_ref_fn_adapter, &wrapped_show_text_ref);
send_strbuf("text/plain", &buf);
}
strbuf_release(&buf);
@ -425,9 +428,11 @@ static int show_head_ref(const char *refname, const unsigned char *sha1,
static void get_head(char *arg)
{
struct strbuf buf = STRBUF_INIT;
struct each_ref_fn_sha1_adapter wrapped_show_head_ref =
{show_head_ref, &buf};
select_getanyfile();
head_ref_namespaced(show_head_ref, &buf);
head_ref_namespaced(each_ref_fn_adapter, &wrapped_show_head_ref);
send_strbuf("text/plain", &buf);
strbuf_release(&buf);
}