kc3-lang/gnulib/lib/vfprintf.c

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• Hash : dac3bbf9
  Author :
  Date : 2008-03-30T15:18:13
  

  Use module 'EOVERFLOW' rather than defining an EOVERFLOW replacement in the C
  code.
  

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• lib/vfprintf.c

• /* Formatted output to a stream.
     Copyright (C) 2004, 2006-2008 Free Software Foundation, Inc.
  
     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/>.  */
  
  #ifdef HAVE_CONFIG_H
  # include <config.h>
  #endif
  
  /* Specification.  */
  #include <stdio.h>
  
  #include <errno.h>
  #include <limits.h>
  #include <stdarg.h>
  #include <stdlib.h>
  
  #include "fseterr.h"
  #include "vasnprintf.h"
  
  /* Print formatted output to the stream FP.
     Return string length of formatted string.  On error, return a negative
     value.  */
  int
  vfprintf (FILE *fp, const char *format, va_list args)
  {
    char buf[2000];
    char *output;
    size_t len;
    size_t lenbuf = sizeof (buf);
  
    output = vasnprintf (buf, &lenbuf, format, args);
    len = lenbuf;
  
    if (!output)
      {
        fseterr (fp);
        return -1;
      }
  
    if (fwrite (output, 1, len, fp) < len)
      {
        if (output != buf)
  	{
  	  int saved_errno = errno;
  	  free (output);
  	  errno = saved_errno;
  	}
        return -1;
      }
  
    if (len > INT_MAX)
      {
        errno = EOVERFLOW;
        fseterr (fp);
        return -1;
      }
  
    return len;
  }
  

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