iconv/gconv_charset.h

   1 /* Charset name normalization.
   2    Copyright (C) 2001-2017 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Ulrich Drepper <drepper@cygnus.com>, 2001.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #include <ctype.h>
  21 #include <locale.h>
  22
  23
  24 static void
  25 strip (char *wp, const char *s)
  26 {
  27   int slash_count = 0;
  28
  29   while (*s != '\0')
  30     {
  31       if (__isalnum_l (*s, _nl_C_locobj_ptr)
  32           || *s == '_' || *s == '-' || *s == '.' || *s == ',' || *s == ':')
  33         *wp++ = __toupper_l (*s, _nl_C_locobj_ptr);
  34       else if (*s == '/')
  35         {
  36           if (++slash_count == 3)
  37             break;
  38           *wp++ = '/';
  39         }
  40       ++s;
  41     }
  42
  43   while (slash_count++ < 2)
  44     *wp++ = '/';
  45
  46   *wp = '\0';
  47 }
  48
  49
  50 static inline char * __attribute__ ((unused, always_inline))
  51 upstr (char *dst, const char *str)
  52 {
  53   char *cp = dst;
  54   while ((*cp++ = __toupper_l (*str++, _nl_C_locobj_ptr)) != '\0')
  55     /* nothing */;
  56   return dst;
  57 }