kc3-lang/gnulib/lib/memcasecmp.c

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• Hash : 5e9740b2
  Author :
  Date : 2003-08-14T23:27:24
  

  * memcasecmp.c: Remove unnecessary parentheses after 'defined'.
  (memcasecmp): Don't assume size_t fits in unsigned int.
  Remove casts and duplicate code.
  

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• lib/memcasecmp.c

• /* Case-insensitive buffer comparator.
     Copyright (C) 1996, 1997, 2000, 2003 Free Software Foundation, Inc.
  
     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 2, 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, write to the Free Software Foundation,
     Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  
  /* Written by Jim Meyering.  */
  
  #if HAVE_CONFIG_H
  # include <config.h>
  #endif
  
  #include <ctype.h>
  
  #if defined STDC_HEADERS || (!defined isascii && !defined HAVE_ISASCII)
  # define IN_CTYPE_DOMAIN(Char) 1
  #else
  # define IN_CTYPE_DOMAIN(Char) isascii (Char)
  #endif
  #define ISLOWER(Char) (IN_CTYPE_DOMAIN (Char) && islower (Char))
  
  #if _LIBC || STDC_HEADERS
  # define TOUPPER(Char) toupper (Char)
  #else
  # define TOUPPER(Char) (ISLOWER (Char) ? toupper (Char) : (Char))
  #endif
  
  #include "memcasecmp.h"
  
  /* Like memcmp, but ignore differences in case.
     Convert to upper case (not lower) before comparing so that
     join -i works with sort -f.  */
  
  int
  memcasecmp (const void *vs1, const void *vs2, size_t n)
  {
    size_t i;
    char const *s1 = vs1;
    char const *s2 = vs2;
    for (i = 0; i < n; i++)
      {
        unsigned char u1 = s1[i];
        unsigned char u2 = s2[i];
        int diff = TOUPPER (u1) - TOUPPER (u2);
        if (diff)
  	return diff;
      }
    return 0;
  }
  

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