1
2
3 /* Copyright 1998 by the Massachusetts Institute of Technology.
4 *
5 * Permission to use, copy, modify, and distribute this
6 * software and its documentation for any purpose and without
7 * fee is hereby granted, provided that the above copyright
8 * notice appear in all copies and that both that copyright
9 * notice and this permission notice appear in supporting
10 * documentation, and that the name of M.I.T. not be used in
11 * advertising or publicity pertaining to distribution of the
12 * software without specific, written prior permission.
13 * M.I.T. makes no representations about the suitability of
14 * this software for any purpose. It is provided "as is"
15 * without express or implied warranty.
16 */
17
18 #include "ares_setup.h"
19 #include "ares_strcasecmp.h"
20
21 #ifndef HAVE_STRCASECMP
ares_strcasecmp(const char * a,const char * b)22 int ares_strcasecmp(const char *a, const char *b)
23 {
24 #if defined(HAVE_STRCMPI)
25 return strcmpi(a, b);
26 #elif defined(HAVE_STRICMP)
27 return stricmp(a, b);
28 #else
29 size_t i;
30
31 for (i = 0; i < (size_t)-1; i++) {
32 int c1 = ISUPPER(a[i]) ? tolower(a[i]) : a[i];
33 int c2 = ISUPPER(b[i]) ? tolower(b[i]) : b[i];
34 if (c1 != c2)
35 return c1-c2;
36 if (!c1)
37 break;
38 }
39 return 0;
40 #endif
41 }
42 #endif
43
44 #ifndef HAVE_STRNCASECMP
ares_strncasecmp(const char * a,const char * b,size_t n)45 int ares_strncasecmp(const char *a, const char *b, size_t n)
46 {
47 #if defined(HAVE_STRNCMPI)
48 return strncmpi(a, b, n);
49 #elif defined(HAVE_STRNICMP)
50 return strnicmp(a, b, n);
51 #else
52 size_t i;
53
54 for (i = 0; i < n; i++) {
55 int c1 = ISUPPER(a[i]) ? tolower(a[i]) : a[i];
56 int c2 = ISUPPER(b[i]) ? tolower(b[i]) : b[i];
57 if (c1 != c2)
58 return c1-c2;
59 if (!c1)
60 break;
61 }
62 return 0;
63 #endif
64 }
65 #endif
66
67