mirror of
https://github.com/git/git
synced 2024-11-05 01:58:18 +00:00
d50cbe4a5d
While looking at how to handle input of both SHA-1 and SHA-256 oids in get_oid_with_context, I realized that the oid_array in repo_for_each_abbrev might have more than one kind of oid stored in it simultaneously. Update to oid_array_append to ensure that oids added to an oid array always have an algorithm set. Update void_hashcmp to first verify two oids use the same hash algorithm before comparing them to each other. With that oid-array should be safe to use with different kinds of oids simultaneously. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
101 lines
2 KiB
C
101 lines
2 KiB
C
#include "git-compat-util.h"
|
|
#include "oid-array.h"
|
|
#include "hash-lookup.h"
|
|
|
|
void oid_array_append(struct oid_array *array, const struct object_id *oid)
|
|
{
|
|
ALLOC_GROW(array->oid, array->nr + 1, array->alloc);
|
|
oidcpy(&array->oid[array->nr++], oid);
|
|
if (!oid->algo)
|
|
oid_set_algo(&array->oid[array->nr - 1], the_hash_algo);
|
|
array->sorted = 0;
|
|
}
|
|
|
|
static int void_hashcmp(const void *va, const void *vb)
|
|
{
|
|
const struct object_id *a = va, *b = vb;
|
|
int ret;
|
|
if (a->algo == b->algo)
|
|
ret = oidcmp(a, b);
|
|
else
|
|
ret = a->algo > b->algo ? 1 : -1;
|
|
return ret;
|
|
}
|
|
|
|
void oid_array_sort(struct oid_array *array)
|
|
{
|
|
if (array->sorted)
|
|
return;
|
|
QSORT(array->oid, array->nr, void_hashcmp);
|
|
array->sorted = 1;
|
|
}
|
|
|
|
static const struct object_id *oid_access(size_t index, const void *table)
|
|
{
|
|
const struct object_id *array = table;
|
|
return &array[index];
|
|
}
|
|
|
|
int oid_array_lookup(struct oid_array *array, const struct object_id *oid)
|
|
{
|
|
oid_array_sort(array);
|
|
return oid_pos(oid, array->oid, array->nr, oid_access);
|
|
}
|
|
|
|
void oid_array_clear(struct oid_array *array)
|
|
{
|
|
FREE_AND_NULL(array->oid);
|
|
array->nr = 0;
|
|
array->alloc = 0;
|
|
array->sorted = 0;
|
|
}
|
|
|
|
|
|
int oid_array_for_each(struct oid_array *array,
|
|
for_each_oid_fn fn,
|
|
void *data)
|
|
{
|
|
size_t i;
|
|
|
|
/* No oid_array_sort() here! See oid-array.h */
|
|
|
|
for (i = 0; i < array->nr; i++) {
|
|
int ret = fn(array->oid + i, data);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int oid_array_for_each_unique(struct oid_array *array,
|
|
for_each_oid_fn fn,
|
|
void *data)
|
|
{
|
|
size_t i;
|
|
|
|
oid_array_sort(array);
|
|
|
|
for (i = 0; i < array->nr; i = oid_array_next_unique(array, i)) {
|
|
int ret = fn(array->oid + i, data);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void oid_array_filter(struct oid_array *array,
|
|
for_each_oid_fn want,
|
|
void *cb_data)
|
|
{
|
|
size_t nr = array->nr, src, dst;
|
|
struct object_id *oids = array->oid;
|
|
|
|
for (src = dst = 0; src < nr; src++) {
|
|
if (want(&oids[src], cb_data)) {
|
|
if (src != dst)
|
|
oidcpy(&oids[dst], &oids[src]);
|
|
dst++;
|
|
}
|
|
}
|
|
array->nr = dst;
|
|
}
|