source/texk/kpathsea/c-memstr.h

   1 /* c-memstr.h: memcpy, strchr, etc.
   2
   3    Copyright 1992-2013 Karl Berry and Olaf Weber.
   4
   5    This library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    This library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public License
  16    along with this library; if not, see <http://www.gnu.org/licenses/>.  */
  17
  18 #ifndef KPATHSEA_C_MEMSTR_H
  19 #define KPATHSEA_C_MEMSTR_H
  20
  21 /* <X11/Xfuncs.h> tries to declare bcopy etc., which can only conflict.  */
  22 #define _XFUNCS_H_
  23
  24 #ifdef HAVE_STRING_H
  25 #include <string.h>
  26 #else
  27 /* don't ever want both string.h and strings.h; fails on AIX.  */
  28 #ifdef HAVE_STRINGS_H
  29 #include <strings.h>
  30 #endif
  31 #endif
  32
  33 /* An ANSI string.h and pre-ANSI memory.h might conflict.  */
  34 #if !defined (STDC_HEADERS) && defined (HAVE_MEMORY_H)
  35 #include <memory.h>
  36 #endif /* not STDC_HEADERS and HAVE_MEMORY_H */
  37
  38 /* For ancient systems that lack the system V/ANSI version of the
  39    string functions we express them in terms of the BSD versions.  */
  40 #if !defined(HAVE_STRCHR) && !defined(strchr)
  41 #define strchr index
  42 #endif
  43
  44 #if !defined(HAVE_STRRCHR) && !defined(strrchr)
  45 #define strrchr rindex
  46 #endif
  47
  48 #if !defined(HAVE_MEMCMP) && !defined(memcmp)
  49 #define memcmp(s1, s2, n) bcmp ((s1), (s2), (n))
  50 #endif
  51
  52 #if !defined(HAVE_MEMCPY) && !defined(memcpy)
  53 #define memcpy(to, from, len) bcopy ((from), (to), (len))
  54 #endif
  55
  56 #if !defined(HAVE_STRING_H)
  57 extern char *strtok ();
  58 #ifndef strstr
  59 extern char *strstr ();
  60 #endif
  61 #endif
  62
  63 #endif /* not KPATHSEA_C_MEMSTR_H */