diplodocus.org Git - nmh/blob - sbr/discard.c

   1
   2 /*
   3  * discard.c -- discard output on a file pointer
   4  *
   5  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   6  * COPYRIGHT file in the root directory of the nmh distribution for
   7  * complete copyright information.
   8  */
   9
  10 #include <h/mh.h>
  11
  12 #include <termios.h>
  13
  14
  15 void
  16 discard (FILE *io)
  17 {
  18     if (io == NULL)
  19         return;
  20
  21     tcflush (fileno(io), TCOFLUSH);
  22
  23 #if defined(_FSTDIO) || defined(__DragonFly__)
  24     fpurge (io);
  25 #else
  26 # ifdef LINUX_STDIO
  27     io->_IO_write_ptr = io->_IO_write_base;
  28 # else
  29     if ((io->_ptr = io->_base))
  30         io->_cnt = 0;
  31 # endif
  32 #endif
  33 }
  34