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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"
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#include "oid-array.h"
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#include "hash-lookup.h"
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void oid_array_append(struct oid_array *array, const struct object_id *oid)
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{
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ALLOC_GROW(array->oid, array->nr + 1, array->alloc);
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oidcpy(&array->oid[array->nr++], oid);
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if (!oid->algo)
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oid_set_algo(&array->oid[array->nr - 1], the_hash_algo);
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array->sorted = 0;
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}
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static int void_hashcmp(const void *va, const void *vb)
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{
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const struct object_id *a = va, *b = vb;
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int ret;
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if (a->algo == b->algo)
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ret = oidcmp(a, b);
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else
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ret = a->algo > b->algo ? 1 : -1;
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return ret;
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}
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void oid_array_sort(struct oid_array *array)
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{
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if (array->sorted)
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return;
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QSORT(array->oid, array->nr, void_hashcmp);
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array->sorted = 1;
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}
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static const struct object_id *oid_access(size_t index, const void *table)
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{
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const struct object_id *array = table;
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return &array[index];
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}
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int oid_array_lookup(struct oid_array *array, const struct object_id *oid)
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{
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oid_array_sort(array);
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return oid_pos(oid, array->oid, array->nr, oid_access);
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}
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void oid_array_clear(struct oid_array *array)
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{
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FREE_AND_NULL(array->oid);
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array->nr = 0;
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array->alloc = 0;
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array->sorted = 0;
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}
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int oid_array_for_each(struct oid_array *array,
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for_each_oid_fn fn,
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void *data)
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{
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size_t i;
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/* No oid_array_sort() here! See oid-array.h */
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for (i = 0; i < array->nr; i++) {
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int ret = fn(array->oid + i, data);
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if (ret)
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return ret;
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}
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return 0;
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}
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int oid_array_for_each_unique(struct oid_array *array,
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for_each_oid_fn fn,
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void *data)
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{
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size_t i;
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oid_array_sort(array);
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for (i = 0; i < array->nr; i = oid_array_next_unique(array, i)) {
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int ret = fn(array->oid + i, data);
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if (ret)
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return ret;
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}
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return 0;
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}
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void oid_array_filter(struct oid_array *array,
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for_each_oid_fn want,
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void *cb_data)
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{
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size_t nr = array->nr, src, dst;
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struct object_id *oids = array->oid;
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for (src = dst = 0; src < nr; src++) {
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if (want(&oids[src], cb_data)) {
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if (src != dst)
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oidcpy(&oids[dst], &oids[src]);
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dst++;
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}
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}
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array->nr = dst;
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}
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