Line data    Source code

       1             : /* printf wrappers that fail immediately for non-file-related errors
       2             :    Copyright (C) 2007 Free Software Foundation, Inc.
       3             : 
       4             :    This program is free software: you can redistribute it and/or modify
       5             :    it under the terms of the GNU General Public License as published by
       6             :    the Free Software Foundation; either version 3 of the License, or
       7             :    (at your option) any later version.
       8             : 
       9             :    This program is distributed in the hope that it will be useful,
      10             :    but WITHOUT ANY WARRANTY; without even the implied warranty of
      11             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      12             :    GNU General Public License for more details.
      13             : 
      14             :    You should have received a copy of the GNU General Public License
      15             :    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
      16             : 
      17             : #include <config.h>
      18             : 
      19             : #include "xprintf.h"
      20             : 
      21             : #include <errno.h>
      22             : 
      23             : #include "error.h"
      24             : #include "exitfail.h"
      25             : #include "gettext.h"
      26             : 
      27             : /* written by Jim Meyering */
      28             : 
      29             : /* Just like printf, but call error if it fails without setting the
      30             :    stream's error indicator.  */
      31             : int
      32          45 : xprintf (char const *restrict format, ...)
      33             : {
      34             :   va_list args;
      35             :   int retval;
      36          45 :   va_start (args, format);
      37          45 :   retval = xvprintf (format, args);
      38          45 :   va_end (args);
      39             : 
      40          45 :   return retval;
      41             : }
      42             : 
      43             : /* Just like vprintf, but call error if it fails without setting the
      44             :    stream's error indicator.  */
      45             : int
      46          45 : xvprintf (char const *restrict format, va_list args)
      47             : {
      48          45 :   int retval = vprintf (format, args);
      49          45 :   if (retval < 0 && ! ferror (stdout))
      50           0 :     error (exit_failure, errno, gettext ("cannot perform formatted output"));
      51             : 
      52          45 :   return retval;
      53             : }
      54             : 
      55             : /* Just like fprintf, but call error if it fails without setting the
      56             :    stream's error indicator.  */
      57             : int
      58           0 : xfprintf (FILE *restrict stream, char const *restrict format, ...)
      59             : {
      60             :   va_list args;
      61             :   int retval;
      62           0 :   va_start (args, format);
      63           0 :   retval = xvfprintf (stream, format, args);
      64           0 :   va_end (args);
      65             : 
      66           0 :   return retval;
      67             : }
      68             : 
      69             : /* Just like vfprintf, but call error if it fails without setting the
      70             :    stream's error indicator.  */
      71             : int
      72           0 : xvfprintf (FILE *restrict stream, char const *restrict format, va_list args)
      73             : {
      74           0 :   int retval = vfprintf (stream, format, args);
      75           0 :   if (retval < 0 && ! ferror (stream))
      76           0 :     error (exit_failure, errno, gettext ("cannot perform formatted output"));
      77             : 
      78           0 :   return retval;
      79             : }