Contents of /tags/mkinitrd-6_1_2/busybox/libbb/compare_string_array.c
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Mon May 4 17:23:09 2009 UTC (15 years, 4 months ago) by niro
File MIME type: text/plain
File size: 1524 byte(s)
Mon May 4 17:23:09 2009 UTC (15 years, 4 months ago) by niro
File MIME type: text/plain
File size: 1524 byte(s)
tagged 'mkinitrd-6_1_2'
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) */ |
10 | int FAST_FUNC 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 | |
22 | 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 | /* 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 |
39 | int FAST_FUNC 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 | |
54 | 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 | } |
67 | } |
68 | return -1; |
69 | } |
70 | |
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 | } |