kc3-lang/gnulib/lib/fzprintf.c

• Show log

  Commit

• Hash : 7b089321
  Author :
  Date : 2025-01-01T09:24:36
  

  maint: run 'make update-copyright'
  

Download

• lib/fzprintf.c

• /* Formatted output to a stream.
     Copyright (C) 2004, 2006-2025 Free Software Foundation, Inc.
  
     This file 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 file 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 <https://www.gnu.org/licenses/>.  */
  
  #ifdef HAVE_CONFIG_H
  # include <config.h>
  #endif
  
  /* Specification.  */
  #include <stdio.h>
  
  #include <errno.h>
  #include <stdarg.h>
  #include <stdlib.h>
  
  #include "fseterr.h"
  #include "intprops.h"
  #include "vasnprintf.h"
  
  off64_t
  fzprintf (FILE *fp, const char *format, ...)
  {
    va_list args;
    char buf[2000];
    char *output;
    size_t len;
    size_t lenbuf = sizeof (buf);
  
    va_start (args, format);
    output = vasnprintf (buf, &lenbuf, format, args);
    len = lenbuf;
    va_end (args);
  
    if (!output)
      {
        fseterr (fp);
        return -1;
      }
  
    if (len > TYPE_MAXIMUM (off64_t))
      {
        /* We could write the (huge) output, but then could not return len, as it
           would be negative.  Treat this case as if vasnprintf had already
           encountered an out-of-memory situation.  */
        if (output != buf)
          free (output);
        fseterr (fp);
        errno = ENOMEM;
        return -1;
      }
  
    if (fwrite (output, 1, len, fp) < len)
      {
        if (output != buf)
          free (output);
        return -1;
      }
  
    if (output != buf)
      free (output);
  
    return len;
  }
  

Download