lib/strcase.h

   1 /* Case-insensitive string comparison functions.
   2    Copyright (C) 1995-1996, 2001, 2003, 2005-2006 Free Software Foundation, Inc.
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 2, or (at your option)
   7    any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program; if not, write to the Free Software Foundation,
  16    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
  17
  18 #ifndef _STRCASE_H
  19 #define _STRCASE_H
  20
  21 #include <stddef.h>
  22 /* Include header files with a possibly conflicting declarations of strcasecmp
  23    before we define it as a macro, so that they will be no-ops if included
  24    after strcasecmp is defined as a macro.  */
  25 #include <string.h>
  26
  27 #ifdef __cplusplus
  28 extern "C" {
  29 #endif
  30
  31
  32 /* No known system has a strcasecmp() function that works correctly in
  33    multibyte locales.  Therefore we use our version always.  */
  34 #define strcasecmp rpl_strcasecmp
  35 /* Compare strings S1 and S2, ignoring case, returning less than, equal to or
  36    greater than zero if S1 is lexicographically less than, equal to or greater
  37    than S2.
  38    Note: This function may, in multibyte locales, return 0 for strings of
  39    different lengths!  */
  40 extern int strcasecmp (const char *s1, const char *s2);
  41
  42 /* Compare no more than N characters of strings S1 and S2, ignoring case,
  43    returning less than, equal to or greater than zero if S1 is
  44    lexicographically less than, equal to or greater than S2.
  45    Note: This function can not work correctly in multibyte locales.  */
  46 #if ! HAVE_DECL_STRNCASECMP
  47 extern int strncasecmp (const char *s1, const char *s2, size_t n);
  48 #endif
  49
  50
  51 #ifdef __cplusplus
  52 }
  53 #endif
  54
  55
  56 #endif /* _STRCASE_H */