busybox/libbb/compare_string_array.c

/* vi: set sw=4 ts=4: */
/*
 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
 */

#include "libbb.h"

/* returns the array index of the string */
/* (index of first match is returned, or -1) */
int FAST_FUNC index_in_str_array(const char *const string_array[], const char *key)
{
	int i;

	for (i = 0; string_array[i] != 0; i++) {
		if (strcmp(string_array[i], key) == 0) {
			return i;
		}
	}
	return -1;
}

int FAST_FUNC index_in_strings(const char *strings, const char *key)
{
	int idx = 0;

	while (*strings) {
		if (strcmp(strings, key) == 0) {
			return idx;
		}
		strings += strlen(strings) + 1; /* skip NUL */
		idx++;
	}
	return -1;
}

/* returns the array index of the string, even if it matches only a beginning */
/* (index of first match is returned, or -1) */
#ifdef UNUSED
int FAST_FUNC index_in_substr_array(const char *const string_array[], const char *key)
{
	int i;
	int len = strlen(key);
	if (len) {
		for (i = 0; string_array[i] != 0; i++) {
			if (strncmp(string_array[i], key, len) == 0) {
				return i;
			}
		}
	}
	return -1;
}
#endif

int FAST_FUNC index_in_substrings(const char *strings, const char *key)
{
	int len = strlen(key);

	if (len) {
		int idx = 0;
		while (*strings) {
			if (strncmp(strings, key, len) == 0) {
				return idx;
			}
			strings += strlen(strings) + 1; /* skip NUL */
			idx++;
		}
	}
	return -1;
}

const char* FAST_FUNC nth_string(const char *strings, int n)
{
	while (n) {
		n--;
		strings += strlen(strings) + 1;
	}
	return strings;
}
1	niro	532	/* 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) */
10	niro	816	int FAST_FUNC index_in_str_array(const char const string_array[], const char key)
11	niro	532	{
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
22	niro	816	int FAST_FUNC index_in_strings(const char strings, const char key)
23			{
24			int idx = 0;
25
26			while (*strings) {
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	niro	532	/* returns the array index of the string, even if it matches only a beginning */
37			/* (index of first match is returned, or -1) */
38	niro	816	#ifdef UNUSED
39			int FAST_FUNC index_in_substr_array(const char const string_array[], const char key)
40	niro	532	{
41			int i;
42			int len = strlen(key);
43	niro	816	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	niro	532
54	niro	816	int FAST_FUNC 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) {
61			if (strncmp(strings, key, len) == 0) {
62			return idx;
63			}
64			strings += strlen(strings) + 1; /* skip NUL */
65			idx++;
66	niro	532	}
67			}
68			return -1;
69			}
70	niro	816
71			const char* FAST_FUNC nth_string(const char *strings, int n)
72			{
73			while (n) {
74			n--;
75			strings += strlen(strings) + 1;
76			}
77			return strings;
78			}