47 lines
1.5 KiB
C
47 lines
1.5 KiB
C
/*
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* Copyright (c) 2012-2013 Spotify AB
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not
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* use this file except in compliance with the License. You may obtain a copy of
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* the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations under
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* the License.
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*/
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#include <stdlib.h>
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#include <string.h>
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#include "sparkey.h"
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#include "sparkey-internal.h"
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#include "hashiter.h"
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uint64_t sparkey_iter_hash(sparkey_hashheader *hash_header, sparkey_logiter *iter, sparkey_logreader *log) {
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uint8_t *buf;
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uint64_t len;
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sparkey_returncode returncode = sparkey_logiter_keychunk(iter, log, 1 << 31, &buf, &len);
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if (returncode != SPARKEY_SUCCESS) {
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return 0;
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}
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if (len == iter->keylen) {
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return hash_header->hash_algorithm.hash(buf, len, hash_header->hash_seed);
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} else {
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uint8_t *keybuf = malloc(iter->keylen);
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memcpy(keybuf, buf, len);
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uint64_t len2;
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returncode = sparkey_logiter_fill_key(iter, log, 1 << 31, keybuf + len, &len2);
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if (len + len2 != iter->keylen) {
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free(keybuf);
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return 0;
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}
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uint64_t hash = hash_header->hash_algorithm.hash(keybuf, iter->keylen, hash_header->hash_seed);
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free(keybuf);
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return hash;
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}
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}
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