lib/strings.in.h

   1 /* A substitute <strings.h>.
   2
   3    Copyright (C) 2007-2011 Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU Lesser General Public License as published by
   7    the Free Software Foundation; either version 2, or (at your option)
   8    any later version.
   9
  10    This program 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
  13    GNU 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 program; if not, write to the Free Software Foundation,
  17    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
  18
  19 #ifndef _GL_STRINGS_H
  20
  21 #if __GNUC__ >= 3
  22 @PRAGMA_SYSTEM_HEADER@
  23 #endif
  24 @PRAGMA_COLUMNS@
  25
  26 /* The include_next requires a split double-inclusion guard.  */
  27 #@INCLUDE_NEXT@ @NEXT_STRINGS_H@
  28
  29 #ifndef _GL_STRINGS_H
  30 #define _GL_STRINGS_H
  31
  32
  33 /* The definition of _GL_ARG_NONNULL is copied here.  */
  34
  35 /* The definition of _GL_WARN_ON_USE is copied here.  */
  36
  37 #ifdef __cplusplus
  38 extern "C" {
  39 #endif
  40
  41
  42 /* Compare strings S1 and S2, ignoring case, returning less than, equal to or
  43    greater than zero if S1 is lexicographically less than, equal to or greater
  44    than S2.
  45    Note: This function does not work in multibyte locales.  */
  46 #if ! @HAVE_STRCASECMP@
  47 extern int strcasecmp (char const *s1, char const *s2)
  48      _GL_ARG_NONNULL ((1, 2));
  49 #endif
  50 #if defined GNULIB_POSIXCHECK
  51 /* strcasecmp() does not work with multibyte strings:
  52    POSIX says that it operates on "strings", and "string" in POSIX is defined
  53    as a sequence of bytes, not of characters.   */
  54 # undef strcasecmp
  55 # if HAVE_RAW_DECL_STRCASECMP
  56 _GL_WARN_ON_USE (strcasecmp, "strcasecmp cannot work correctly on character "
  57                  "strings in multibyte locales - "
  58                  "use mbscasecmp if you care about "
  59                  "internationalization, or use c_strcasecmp , "
  60                  "gnulib module c-strcase) if you want a locale "
  61                  "independent function");
  62 # endif
  63 #endif
  64
  65 /* Compare no more than N bytes of strings S1 and S2, ignoring case,
  66    returning less than, equal to or greater than zero if S1 is
  67    lexicographically less than, equal to or greater than S2.
  68    Note: This function cannot work correctly in multibyte locales.  */
  69 #if ! @HAVE_DECL_STRNCASECMP@
  70 extern int strncasecmp (char const *s1, char const *s2, size_t n)
  71      _GL_ARG_NONNULL ((1, 2));
  72 #endif
  73 #if defined GNULIB_POSIXCHECK
  74 /* strncasecmp() does not work with multibyte strings:
  75    POSIX says that it operates on "strings", and "string" in POSIX is defined
  76    as a sequence of bytes, not of characters.  */
  77 # undef strncasecmp
  78 # if HAVE_RAW_DECL_STRNCASECMP
  79 _GL_WARN_ON_USE (strncasecmp, "strncasecmp cannot work correctly on character "
  80                  "strings in multibyte locales - "
  81                  "use mbsncasecmp or mbspcasecmp if you care about "
  82                  "internationalization, or use c_strncasecmp , "
  83                  "gnulib module c-strcase) if you want a locale "
  84                  "independent function");
  85 # endif
  86 #endif
  87
  88
  89 #ifdef __cplusplus
  90 }
  91 #endif
  92
  93 #endif /* _GL_STRING_H */
  94 #endif /* _GL_STRING_H */