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git/sha1-array.c
Junio C Hamano b8688adb12 Merge branch 'rs/qsort'
We call "qsort(array, nelem, sizeof(array[0]), fn)", and most of
the time third parameter is redundant.  A new QSORT() macro lets us
omit it.

* rs/qsort:
  show-branch: use QSORT
  use QSORT, part 2
  coccicheck: use --all-includes by default
  remove unnecessary check before QSORT
  use QSORT
  add QSORT
2016-10-10 14:03:46 -07:00

63 lines
1.3 KiB
C

#include "cache.h"
#include "sha1-array.h"
#include "sha1-lookup.h"
void sha1_array_append(struct sha1_array *array, const unsigned char *sha1)
{
ALLOC_GROW(array->sha1, array->nr + 1, array->alloc);
hashcpy(array->sha1[array->nr++], sha1);
array->sorted = 0;
}
static int void_hashcmp(const void *a, const void *b)
{
return hashcmp(a, b);
}
static void sha1_array_sort(struct sha1_array *array)
{
QSORT(array->sha1, array->nr, void_hashcmp);
array->sorted = 1;
}
static const unsigned char *sha1_access(size_t index, void *table)
{
unsigned char (*array)[20] = table;
return array[index];
}
int sha1_array_lookup(struct sha1_array *array, const unsigned char *sha1)
{
if (!array->sorted)
sha1_array_sort(array);
return sha1_pos(sha1, array->sha1, array->nr, sha1_access);
}
void sha1_array_clear(struct sha1_array *array)
{
free(array->sha1);
array->sha1 = NULL;
array->nr = 0;
array->alloc = 0;
array->sorted = 0;
}
int sha1_array_for_each_unique(struct sha1_array *array,
for_each_sha1_fn fn,
void *data)
{
int i;
if (!array->sorted)
sha1_array_sort(array);
for (i = 0; i < array->nr; i++) {
int ret;
if (i > 0 && !hashcmp(array->sha1[i], array->sha1[i-1]))
continue;
ret = fn(array->sha1[i], data);
if (ret)
return ret;
}
return 0;
}