kc3-lang/gnulib/lib/uniconv/u-conv-from-enc.h

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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/uniconv/u-conv-from-enc.h

• /* Conversion to UTF-16/UTF-32 from legacy encodings.
     Copyright (C) 2002, 2006-2007 Free Software Foundation, Inc.
  
     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/>.  */
  
  int
  FUNC (const char *fromcode,
        enum iconv_ilseq_handler handler,
        const char *src, size_t srclen,
        size_t *offsets,
        UNIT **resultp, size_t *lengthp)
  {
  #if HAVE_UTF_NAME
    size_t length;
  
    if (mem_iconveha (src, srclen, fromcode, UTF_NAME, true, handler,
  		    offsets, (char **) resultp, &length) < 0)
      return -1;
    if (offsets != NULL)
      {
        /* Convert 'char *' offsets to 'UNIT *' offsets.  */
        size_t *offsets_end = offsets + srclen;
        size_t *o;
  
        for (o = offsets; o < offsets_end; o++)
  	if (*o != (size_t)(-1))
  	  *o = *o / sizeof (UNIT);
      }
    if ((length % sizeof (UNIT)) != 0)
      abort ();
    *lengthp = length / sizeof (UNIT);
    return 0;
  #else
    uint8_t *utf8_string = NULL;
    size_t utf8_length = 0;
    UNIT *result;
  
    if (u8_conv_from_encoding (fromcode, handler, src, srclen, offsets,
  			     &utf8_string, &utf8_length) < 0)
      return -1;
    if (utf8_string == NULL)
      {
        *lengthp = 0;
        return 0;
      }
    result = U8_TO_U (utf8_string, utf8_length, *resultp, lengthp);
    if (result == NULL)
      {
        int saved_errno = errno;
        free (utf8_string);
        errno = saved_errno;
        return -1;
      }
    if (offsets != NULL)
      {
        size_t length = *lengthp;
        size_t *offsets_end = offsets + srclen;
        size_t *o;
        size_t off8 = 0;	/* offset into utf8_string */
        size_t offunit = 0;	/* offset into result */
  
        for (o = offsets; o < offsets_end; o++)
  	if (*o != (size_t)(-1))
  	  {
  	    while (off8 < *o)
  	      {
  		int count8 = u8_mblen (utf8_string + off8, utf8_length - off8);
  		int countunit = U_MBLEN (result + offunit, length - offunit);
  		if (count8 < 0 || countunit < 0)
  		  abort ();
  		off8 += count8;
  		offunit += countunit;
  	      }
  	    if (*o != off8)
  	      abort ();
  	    *o = offunit;
  	  }
      }
    free (utf8_string);
    *resultp = result;
    return 0;
  #endif
  }
  

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