63e14ee2d6
Functions used with for_each_ref(), etc, need to conform to the each_ref_fn interface. But most of them don't need every parameter; let's annotate the unused ones to quiet -Wunused-parameter. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
85 lines
2.2 KiB
C
85 lines
2.2 KiB
C
#include "cache.h"
|
|
#include "oidmap.h"
|
|
#include "object-store.h"
|
|
#include "replace-object.h"
|
|
#include "refs.h"
|
|
#include "repository.h"
|
|
#include "commit.h"
|
|
|
|
static int register_replace_ref(struct repository *r,
|
|
const char *refname,
|
|
const struct object_id *oid,
|
|
int UNUSED(flag),
|
|
void *UNUSED(cb_data))
|
|
{
|
|
/* Get sha1 from refname */
|
|
const char *slash = strrchr(refname, '/');
|
|
const char *hash = slash ? slash + 1 : refname;
|
|
struct replace_object *repl_obj = xmalloc(sizeof(*repl_obj));
|
|
|
|
if (get_oid_hex(hash, &repl_obj->original.oid)) {
|
|
free(repl_obj);
|
|
warning(_("bad replace ref name: %s"), refname);
|
|
return 0;
|
|
}
|
|
|
|
/* Copy sha1 from the read ref */
|
|
oidcpy(&repl_obj->replacement, oid);
|
|
|
|
/* Register new object */
|
|
if (oidmap_put(r->objects->replace_map, repl_obj))
|
|
die(_("duplicate replace ref: %s"), refname);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void prepare_replace_object(struct repository *r)
|
|
{
|
|
if (r->objects->replace_map_initialized)
|
|
return;
|
|
|
|
pthread_mutex_lock(&r->objects->replace_mutex);
|
|
if (r->objects->replace_map_initialized) {
|
|
pthread_mutex_unlock(&r->objects->replace_mutex);
|
|
return;
|
|
}
|
|
|
|
r->objects->replace_map =
|
|
xmalloc(sizeof(*r->objects->replace_map));
|
|
oidmap_init(r->objects->replace_map, 0);
|
|
|
|
for_each_replace_ref(r, register_replace_ref, NULL);
|
|
r->objects->replace_map_initialized = 1;
|
|
|
|
pthread_mutex_unlock(&r->objects->replace_mutex);
|
|
}
|
|
|
|
/* We allow "recursive" replacement. Only within reason, though */
|
|
#define MAXREPLACEDEPTH 5
|
|
|
|
/*
|
|
* If a replacement for object oid has been set up, return the
|
|
* replacement object's name (replaced recursively, if necessary).
|
|
* The return value is either oid or a pointer to a
|
|
* permanently-allocated value. This function always respects replace
|
|
* references, regardless of the value of read_replace_refs.
|
|
*/
|
|
const struct object_id *do_lookup_replace_object(struct repository *r,
|
|
const struct object_id *oid)
|
|
{
|
|
int depth = MAXREPLACEDEPTH;
|
|
const struct object_id *cur = oid;
|
|
|
|
prepare_replace_object(r);
|
|
|
|
/* Try to recursively replace the object */
|
|
while (depth-- > 0) {
|
|
struct replace_object *repl_obj =
|
|
oidmap_get(r->objects->replace_map, cur);
|
|
if (!repl_obj)
|
|
return cur;
|
|
cur = &repl_obj->replacement;
|
|
}
|
|
die(_("replace depth too high for object %s"), oid_to_hex(oid));
|
|
}
|