![Guy Harris](/assets/img/avatar_default.png)
With autotools, CMake, and nmake, if we have a function, #define HAVE_{function_name_in_all_caps}, otherwise don't #define it. If we provide our own version of a function in libwsutil, make sure we have a header that declares it, and *ONLY* include that header if HAVE_{function_name_in_all_caps} is *NOT* defined, so that we don't have the system declaration and our declaration colliding. Check for inet_aton, strncasecmp, and strptime with CMake, just as we do with autotools. Simplify the addition of {function_name_in_all_caps}_LO to libwsutil in autotools. Change-Id: Id5be5c73f79f81919a3a865324e400eca7b88889 Reviewed-on: https://code.wireshark.org/review/2903 Reviewed-by: Guy Harris <guy@alum.mit.edu>
50 lines
1.6 KiB
C
50 lines
1.6 KiB
C
/*
|
|
Copyright (C) 1992, 1996 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If
|
|
not, write to the Free Software Foundation, Inc., 51 Franklin Street,
|
|
Fifth Floor, Boston, MA 02110-1301 USA. */
|
|
|
|
#include <ansidecl.h>
|
|
#include <string.h>
|
|
#include <ctype.h>
|
|
|
|
#include "wsutil/strncasecmp.h"
|
|
|
|
/* Compare no more than N characters of S1 and S2,
|
|
ignoring case, returning less than, equal to or
|
|
greater than zero if S1 is lexicographically less
|
|
than, equal to or greater than S2. */
|
|
int
|
|
strncasecmp (const char *s1, const char *s2, size_t n)
|
|
{
|
|
register const unsigned char *p1 = (const unsigned char *) s1;
|
|
register const unsigned char *p2 = (const unsigned char *) s2;
|
|
unsigned char c1, c2;
|
|
|
|
if (p1 == p2 || n == 0)
|
|
return 0;
|
|
|
|
do
|
|
{
|
|
c1 = tolower (*p1++);
|
|
c2 = tolower (*p2++);
|
|
if (c1 == '\0' || c1 != c2)
|
|
return c1 - c2;
|
|
} while (--n > 0);
|
|
|
|
return c1 - c2;
|
|
}
|