kmx git

/* Iterate over previous character in UTF-32 string.
   Copyright (C) 2002, 2006-2007 Free Software Foundation, Inc.
   Written by Bruno Haible <bruno@clisp.org>, 2002.

   This program is free software; you can redistribute it and/or modify it
   under the terms of the GNU Library 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
   USA.  */

#include <config.h>

/* Specification.  */
#include "unistr.h"

const uint32_t *
u32_prev (ucs4_t *puc, const uint32_t *s, const uint32_t *start)
{
  if (s != start)
    {
      uint32_t c_1 = s[-1];

#if CONFIG_UNICODE_SAFETY
      if (c_1 < 0xd800 || (c_1 >= 0xe000 && c_1 < 0x110000))
#endif
	{
	  *puc = c_1;
	  return s - 1;
	}
    }
  return NULL;
}
kc3-lang/gnulib/lib/unistr/u32-prev.c

Commit

lib/unistr/u32-prev.c
