common/ac/string.h

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//
//      aegis - a project change supervisor
//      Copyright (C) 1994, 1996, 1997, 2002, 2004-2008 Peter Miller
//
//      This program is free software; you can redistribute it and/or
//      modify it under the terms of the GNU General Public License as
//      published by the Free Software Foundation; either version 3 of
//      the License, or (at your option) any later version.
//
//      This program 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 General Public License for more details.
//
//      You should have received a copy of the GNU General Public License
//      along with this program. If not, see
//      <http://www.gnu.org/licenses/>.
//

#ifndef COMMON_AC_STRING_H
#define COMMON_AC_STRING_H

#include <common/config.h>

#if STDC_HEADERS || HAVE_STRING_H
#  include <string.h>
   // An ANSI string.h and pre-ANSI memory.h might conflict.
#  if !STDC_HEADERS && HAVE_MEMORY_H
#    include <memory.h>
#  endif
#else
   // memory.h and strings.h conflict on some systems.
#  include <strings.h>
#endif

extern "C" {

#if !HAVE_STRCASECMP
int strcasecmp(const char *, const char *);
#endif

#if !HAVE_STRNCASECMP
int strncasecmp(const char *, const char *, size_t);
#endif

#if !HAVE_DECL_STRSIGNAL
const char *strsignal(int);
#endif

#if !HAVE_STRVERSCMP
int strverscmp(const char *, const char *);
#endif

#if !HAVE_STRLCPY
size_t strlcpy(char *dst, const char *src, size_t size);
#endif
#if !HAVE_STRLCAT
size_t strlcat(char *dst, const char *src, size_t size);
#endif

#if !HAVE_STRENDCPY

char *strendcpy(char *dst, const char *src, const char *end);
#endif

#undef strcat
#define strcat strcat_is_unsafe__use_strendcat_instead@
#undef strcpy
#define strcpy strcpy_is_unsafe__use_strendcpy_instead@

#ifndef HAVE_MEMMEM
void *memmem(const void *, size_t, const void *, size_t);
#endif
void *memmem_replacement(const void *, size_t, const void *, size_t);

// It is possible memmem is present, but severely broken.  See the GNU
// libc memmem(3) man page for just how broken it can get.
#define memmem memmem_replacement

}

#endif // COMMON_AC_STRING_H

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