kc3-lang/gnulib/lib/uniconv/u8-strconv-to-enc.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/uniconv/u8-strconv-to-enc.c

• /* Conversion from UTF-8 to 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/>.  */
  
  /* Written by Bruno Haible <bruno@clisp.org>.  */
  
  #include <config.h>
  
  /* Specification.  */
  #include "uniconv.h"
  
  #include <errno.h>
  #include <stdlib.h>
  #include <string.h>
  
  #include "c-strcaseeq.h"
  #include "striconveha.h"
  #include "unistr.h"
  
  char *
  u8_strconv_to_encoding (const uint8_t *string,
  			const char *tocode,
  			enum iconv_ilseq_handler handler)
  {
    char *result;
    size_t length;
  
    if (STRCASEEQ (tocode, "UTF-8", 'U','T','F','-','8',0,0,0,0))
      {
        /* Conversion from UTF-8 to UTF-8.  No need to go through iconv().  */
        length = u8_strlen (string) + 1;
  #if CONFIG_UNICODE_SAFETY
        if (u8_check (string, length))
  	{
  	  errno = EILSEQ;
  	  return NULL;
  	}
  #endif
        result = (char *) malloc (length);
        if (result == NULL)
  	{
  	  errno = ENOMEM;
  	  return NULL;
  	}
        memcpy (result, (const char *) string, length);
        return result;
      }
    else
      {
        result = NULL;
        length = 0;
        if (mem_iconveha ((const char *) string, u8_strlen (string) + 1,
  			"UTF-8", tocode,
  			handler == iconveh_question_mark, handler,
  			NULL, &result, &length) < 0)
  	return NULL;
        /* Verify the result has exactly one NUL byte, at the end.  */
        if (!(length > 0 && result[length-1] == '\0'
  	    && strlen (result) == length-1))
  	{
  	  free (result);
  	  errno = EILSEQ;
  	  return NULL;
  	}
        return result;
      }
  }
  

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