1  /* A substitute <strings.h>.
       2  
       3     Copyright (C) 2007-2021 Free Software Foundation, Inc.
       4  
       5     This file is free software: you can redistribute it and/or modify
       6     it under the terms of the GNU Lesser General Public License as
       7     published by the Free Software Foundation; either version 2.1 of the
       8     License, or (at your option) any later version.
       9  
      10     This file 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, see <https://www.gnu.org/licenses/>.  */
      17  
      18  #ifndef _@GUARD_PREFIX@_STRINGS_H
      19  
      20  #if __GNUC__ >= 3
      21  @PRAGMA_SYSTEM_HEADER@
      22  #endif
      23  @PRAGMA_COLUMNS@
      24  
      25  /* Minix 3.1.8 has a bug: <sys/types.h> must be included before <strings.h>.
      26     But avoid namespace pollution on glibc systems.  */
      27  #if defined __minix && !defined __GLIBC__
      28  # include <sys/types.h>
      29  #endif
      30  
      31  /* The include_next requires a split double-inclusion guard.  */
      32  #if @HAVE_STRINGS_H@
      33  # @INCLUDE_NEXT@ @NEXT_STRINGS_H@
      34  #endif
      35  
      36  #ifndef _@GUARD_PREFIX@_STRINGS_H
      37  #define _@GUARD_PREFIX@_STRINGS_H
      38  
      39  #if ! @HAVE_DECL_STRNCASECMP@
      40  /* Get size_t.  */
      41  # include <stddef.h>
      42  #endif
      43  
      44  
      45  /* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
      46  
      47  /* The definition of _GL_ARG_NONNULL is copied here.  */
      48  
      49  /* The definition of _GL_WARN_ON_USE is copied here.  */
      50  
      51  #ifdef __cplusplus
      52  extern "C" {
      53  #endif
      54  
      55  
      56    /* Find the index of the least-significant set bit.  */
      57  #if @GNULIB_FFS@
      58  # if !@HAVE_FFS@
      59  _GL_FUNCDECL_SYS (ffs, int, (int i));
      60  # endif
      61  _GL_CXXALIAS_SYS (ffs, int, (int i));
      62  _GL_CXXALIASWARN (ffs);
      63  #elif defined GNULIB_POSIXCHECK
      64  # undef ffs
      65  # if HAVE_RAW_DECL_FFS
      66  _GL_WARN_ON_USE (ffs, "ffs is not portable - use the ffs module");
      67  # endif
      68  #endif
      69  
      70  /* Compare strings S1 and S2, ignoring case, returning less than, equal to or
      71     greater than zero if S1 is lexicographically less than, equal to or greater
      72     than S2.
      73     Note: This function does not work in multibyte locales.  */
      74  #if ! @HAVE_STRCASECMP@
      75  extern int strcasecmp (char const *s1, char const *s2)
      76       _GL_ARG_NONNULL ((1, 2));
      77  #endif
      78  #if defined GNULIB_POSIXCHECK
      79  /* strcasecmp() does not work with multibyte strings:
      80     POSIX says that it operates on "strings", and "string" in POSIX is defined
      81     as a sequence of bytes, not of characters.   */
      82  # undef strcasecmp
      83  # if HAVE_RAW_DECL_STRCASECMP
      84  _GL_WARN_ON_USE (strcasecmp, "strcasecmp cannot work correctly on character "
      85                   "strings in multibyte locales - "
      86                   "use mbscasecmp if you care about "
      87                   "internationalization, or use c_strcasecmp , "
      88                   "gnulib module c-strcase) if you want a locale "
      89                   "independent function");
      90  # endif
      91  #endif
      92  
      93  /* Compare no more than N bytes of strings S1 and S2, ignoring case,
      94     returning less than, equal to or greater than zero if S1 is
      95     lexicographically less than, equal to or greater than S2.
      96     Note: This function cannot work correctly in multibyte locales.  */
      97  #if ! @HAVE_DECL_STRNCASECMP@
      98  extern int strncasecmp (char const *s1, char const *s2, size_t n)
      99       _GL_ARG_NONNULL ((1, 2));
     100  #endif
     101  #if defined GNULIB_POSIXCHECK
     102  /* strncasecmp() does not work with multibyte strings:
     103     POSIX says that it operates on "strings", and "string" in POSIX is defined
     104     as a sequence of bytes, not of characters.  */
     105  # undef strncasecmp
     106  # if HAVE_RAW_DECL_STRNCASECMP
     107  _GL_WARN_ON_USE (strncasecmp, "strncasecmp cannot work correctly on character "
     108                   "strings in multibyte locales - "
     109                   "use mbsncasecmp or mbspcasecmp if you care about "
     110                   "internationalization, or use c_strncasecmp , "
     111                   "gnulib module c-strcase) if you want a locale "
     112                   "independent function");
     113  # endif
     114  #endif
     115  
     116  
     117  #ifdef __cplusplus
     118  }
     119  #endif
     120  
     121  #endif /* _@GUARD_PREFIX@_STRING_H */
     122  #endif /* _@GUARD_PREFIX@_STRING_H */