kc3-lang/gnulib/lib/wcsspn-impl.h

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• Hash : 09eadbc7
  Author :
  Date : 2011-02-06T14:19:57
  

  New module 'wcsspn'.
  
  * modules/wcsspn: New file.
  * lib/wchar.in.h (wcsspn): New declaration.
  * lib/wcsspn.c: New file.
  * lib/wcsspn-impl.h: New file, from libutf8 with modifications.
  * m4/wcsspn.m4: New file.
  * m4/wchar_h.m4 (gl_WCHAR_H): Test whether wcsspn is declared.
  (gl_WCHAR_H_DEFAULTS): Initialize GNULIB_WCSSPN, HAVE_WCSSPN.
  * modules/wchar (Makefile.am): Substitute GNULIB_WCSSPN, HAVE_WCSSPN.
  * tests/test-wchar-c++.cc: Test the declaration of wcsspn.
  * doc/posix-functions/wcsspn.texi: Mention the new module.
  

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• lib/wcsspn-impl.h

• /* Advance in a wide string, skipping any of a set of wide characters.
     Copyright (C) 1999, 2011 Free Software Foundation, Inc.
     Written by Bruno Haible <bruno@clisp.org>, 1999.
  
     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 <http://www.gnu.org/licenses/>.  */
  
  size_t
  wcsspn (const wchar_t *wcs, const wchar_t *accept)
  {
    /* Optimize two cases.  */
    if (accept[0] == (wchar_t)'\0')
      return 0;
  
    if (accept[1] == (wchar_t)'\0')
      {
        wchar_t wc = accept[0];
        const wchar_t *ptr = wcs;
        for (; *ptr != (wchar_t)'\0'; ptr++)
          {
            if (*ptr != wc)
              break;
          }
        return ptr - wcs;
      }
  
    /* General case.  */
    {
      const wchar_t *ptr = wcs;
      for (; *ptr != (wchar_t)'\0'; ptr++)
        {
          if (!wcschr (accept, *ptr))
            break;
        }
      return ptr - wcs;
    }
  }
  

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