kc3-lang/gnulib/lib/unistr/u16-chr.c

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• Hash : ac5cf798
  Author :
  Date : 2007-10-07T17:23:24
  

  Change copyright notice from LGPLv2.0+ to LGPLv3+.
  

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• lib/unistr/u16-chr.c

• /* Search character in piece of UTF-16 string.
     Copyright (C) 1999, 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 Lesser 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
     Lesser General Public License for more details.
  
     You should have received a copy of the GNU Lesser General Public License
     along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  
  #include <config.h>
  
  /* Specification.  */
  #include "unistr.h"
  
  uint16_t *
  u16_chr (const uint16_t *s, size_t n, ucs4_t uc)
  {
    uint16_t c[2];
  
    if (uc < 0x10000)
      {
        uint16_t c0 = uc;
  
        for (; n > 0; s++, n--)
  	{
  	  if (*s == c0)
  	    return (uint16_t *) s;
  	}
      }
    else
      switch (u16_uctomb_aux (c, uc, 2))
        {
        case 2:
  	if (n > 1)
  	  {
  	    uint16_t c0 = c[0];
  	    uint16_t c1 = c[1];
  
  	    for (n--; n > 0; s++, n--)
  	      {
  		if (*s == c0 && s[1] == c1)
  		  return (uint16_t *) s;
  	      }
  	  }
  	break;
        }
    return NULL;
  }
  

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