kc3-lang/gnulib/lib/mbspbrk.c

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• Hash : 281b825e
  Author :
  Date : 2018-01-01T00:57:25
  

  maint: Run 'make update-copyright'
  

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• lib/mbspbrk.c

• /* Searching a string for a character among a given set of characters.
     Copyright (C) 1999, 2002, 2006-2018 Free Software Foundation, Inc.
     Written by Bruno Haible <bruno@clisp.org>, 2007.
  
     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 3 of the License, 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, see <https://www.gnu.org/licenses/>.  */
  
  #include <config.h>
  
  /* Specification.  */
  #include <string.h>
  
  #include "mbuiter.h"
  
  /* Find the first occurrence in the character string STRING of any character
     in the character string ACCEPT.  Return the pointer to it, or NULL if none
     exists.  */
  char *
  mbspbrk (const char *string, const char *accept)
  {
    /* Optimize two cases.  */
    if (accept[0] == '\0')
      return NULL;
    if (accept[1] == '\0')
      return mbschr (string, accept[0]);
    /* General case.  */
    if (MB_CUR_MAX > 1)
      {
        mbui_iterator_t iter;
  
        for (mbui_init (iter, string); mbui_avail (iter); mbui_advance (iter))
          {
            if (mb_len (mbui_cur (iter)) == 1)
              {
                if (mbschr (accept, * mbui_cur_ptr (iter)))
                  return (char *) mbui_cur_ptr (iter);
              }
            else
              {
                mbui_iterator_t aiter;
  
                for (mbui_init (aiter, accept);
                     mbui_avail (aiter);
                     mbui_advance (aiter))
                  if (mb_equal (mbui_cur (aiter), mbui_cur (iter)))
                    return (char *) mbui_cur_ptr (iter);
              }
          }
        return NULL;
      }
    else
      return strpbrk (string, accept);
  }
  

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