1/* vi: set sw=4 ts=4: */
2/*
3 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
4 */
5
6#include "libbb.h"
7
8/* returns the array index of the string */
9/* (index of first match is returned, or -1) */
10int index_in_str_array(const char *const string_array[], const char *key)
11{
12	int i;
13
14	for (i = 0; string_array[i] != 0; i++) {
15		if (strcmp(string_array[i], key) == 0) {
16			return i;
17		}
18	}
19	return -1;
20}
21
22int index_in_strings(const char *strings, const char *key)
23{
24	int idx = 0;
25
26	while (strings[0]) {
27		if (strcmp(strings, key) == 0) {
28			return idx;
29		}
30		strings += strlen(strings) + 1; /* skip NUL */
31		idx++;
32	}
33	return -1;
34}
35
36/* returns the array index of the string, even if it matches only a beginning */
37/* (index of first match is returned, or -1) */
38#ifdef UNUSED
39int index_in_substr_array(const char *const string_array[], const char *key)
40{
41	int i;
42	int len = strlen(key);
43	if (len) {
44		for (i = 0; string_array[i] != 0; i++) {
45			if (strncmp(string_array[i], key, len) == 0) {
46				return i;
47			}
48		}
49	}
50	return -1;
51}
52#endif
53
54int index_in_substrings(const char *strings, const char *key)
55{
56	int len = strlen(key);
57
58	if (len) {
59		int idx = 0;
60		while (strings[0]) {
61			if (strncmp(strings, key, len) == 0) {
62				return idx;
63			}
64			strings += strlen(strings) + 1; /* skip NUL */
65			idx++;
66		}
67	}
68	return -1;
69}
70