forked from osmocom/wireshark
5bfc21cf9e
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
/*
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Copyright (C) 1992, 1996 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 51 Franklin Street,
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Fifth Floor, Boston, MA 02110-1301 USA. */
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#include <ansidecl.h>
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#include <string.h>
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#include <ctype.h>
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#include "wsutil/strncasecmp.h"
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/* Compare no more than N characters of S1 and S2,
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ignoring case, returning less than, equal to or
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greater than zero if S1 is lexicographically less
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than, equal to or greater than S2. */
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int
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strncasecmp (const char *s1, const char *s2, size_t n)
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{
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register const unsigned char *p1 = (const unsigned char *) s1;
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register const unsigned char *p2 = (const unsigned char *) s2;
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unsigned char c1, c2;
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if (p1 == p2 || n == 0)
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return 0;
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do
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{
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c1 = tolower (*p1++);
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c2 = tolower (*p2++);
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if (c1 == '\0' || c1 != c2)
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return c1 - c2;
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} while (--n > 0);
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return c1 - c2;
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}
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