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key_value.c
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1 /*
2  * Copyright 2008 Google Inc.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 #include <stddef.h>
17 #include <stdlib.h>
18 #include <string.h>
19 
20 #include "key_value.h"
21 
22 static KeyValue *key_values = NULL;
23 static unsigned int number_of_key_values = 0;
24 
25 void set_key_values(KeyValue * const new_key_values,
26  const unsigned int new_number_of_key_values) {
27  key_values = new_key_values;
28  number_of_key_values = new_number_of_key_values;
29 }
30 
31 /* Compare two key members of KeyValue structures. */
32 static int key_value_compare_keys(const void *a, const void *b) {
33  return (int)((KeyValue*)a)->key - (int)((KeyValue*)b)->key;
34 }
35 
36 /* Search an array of key value pairs for the item with the specified value. */
37 KeyValue* find_item_by_value(const char * const value) {
38  unsigned int i;
39  for (i = 0; i < number_of_key_values; i++) {
40  if (strcmp(key_values[i].value, value) == 0) {
41  return &key_values[i];
42  }
43  }
44  return NULL;
45 }
46 
47 /* Sort an array of key value pairs by key. */
48 void sort_items_by_key(void) {
49  qsort(key_values, number_of_key_values, sizeof(*key_values),
51 }
static unsigned int number_of_key_values
Definition: key_value.c:23
static int key_value_compare_keys(const void *a, const void *b)
Definition: key_value.c:32
void set_key_values(KeyValue *const new_key_values, const unsigned int new_number_of_key_values)
Definition: key_value.c:25
KeyValue * find_item_by_value(const char *const value)
Definition: key_value.c:37
void sort_items_by_key(void)
Definition: key_value.c:48
static KeyValue * key_values
Definition: key_value.c:22
Container for unidirectional cipher and HMAC key material.
Definition: crypto.h:151