[geodb] Adding sparkey dependency

src/sparkey/hashiter.c

@@ -0,0 +1,46 @@
+/*
+* Copyright (c) 2012-2013 Spotify AB
+*
+* Licensed under the Apache License, Version 2.0 (the "License"); you may not
+* use this file except in compliance with the License. You may obtain a copy of
+* the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+* License for the specific language governing permissions and limitations under
+* the License.
+*/
+#include <stdlib.h>
+#include <string.h>
+
+#include "sparkey.h"
+#include "sparkey-internal.h"
+#include "hashiter.h"
+
+uint64_t sparkey_iter_hash(sparkey_hashheader *hash_header, sparkey_logiter *iter, sparkey_logreader *log) {
+  uint8_t *buf;
+  uint64_t len;
+  sparkey_returncode returncode = sparkey_logiter_keychunk(iter, log, 1 << 31, &buf, &len);
+  if (returncode != SPARKEY_SUCCESS) {
+    return 0;
+  }
+  if (len == iter->keylen) {
+    return hash_header->hash_algorithm.hash(buf, len, hash_header->hash_seed);
+  } else {
+    uint8_t *keybuf = malloc(iter->keylen);
+    memcpy(keybuf, buf, len);
+    uint64_t len2;
+    returncode = sparkey_logiter_fill_key(iter, log, 1 << 31, keybuf + len, &len2);
+    if (len + len2 != iter->keylen) {
+      free(keybuf);
+      return 0;
+    }
+    uint64_t hash = hash_header->hash_algorithm.hash(keybuf, iter->keylen, hash_header->hash_seed);
+    free(keybuf);
+    return hash;
+  }
+}
+