Line data    Source code

       1             : /* setlinebuf.c - line-buffer a stdio stream. */
       2             : 
       3             : /* Copyright (C) 1997 Free Software Foundation, Inc.
       4             : 
       5             :    This file is part of GNU Bash, the Bourne Again SHell.
       6             : 
       7             :    Bash is free software: you can redistribute it and/or modify
       8             :    it under the terms of the GNU General Public License as published by
       9             :    the Free Software Foundation, either version 3 of the License, or
      10             :    (at your option) any later version.
      11             : 
      12             :    Bash is distributed in the hope that it will be useful,
      13             :    but WITHOUT ANY WARRANTY; without even the implied warranty of
      14             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      15             :    GNU General Public License for more details.
      16             : 
      17             :    You should have received a copy of the GNU General Public License
      18             :    along with Bash.  If not, see <http://www.gnu.org/licenses/>.
      19             : */
      20             : 
      21             : #include <config.h>
      22             : 
      23             : #include <stdio.h>
      24             : 
      25             : #include <xmalloc.h>
      26             : 
      27             : #if defined (USING_BASH_MALLOC)
      28             : #  define LBUF_BUFSIZE  1008
      29             : #else
      30             : #  define LBUF_BUFSIZE  BUFSIZ
      31             : #endif
      32             : 
      33             : /* Cause STREAM to buffer lines as opposed to characters or blocks. */
      34             : int
      35    18286500 : sh_setlinebuf (stream)
      36             :      FILE *stream;
      37             : {
      38    18286500 :   char *local_linebuf;
      39             : 
      40             : #if !defined (HAVE_SETLINEBUF) && !defined (HAVE_SETVBUF)
      41             :   return (0);
      42             : #endif
      43             : 
      44             : #if defined (USING_BASH_MALLOC)
      45             :   local_linebuf = (char *)xmalloc (LBUF_BUFSIZE);
      46             : #else
      47    18286500 :   local_linebuf = (char *)NULL;
      48             : #endif
      49             : 
      50             : #if defined (HAVE_SETVBUF)
      51             : 
      52             : #  if defined (SETVBUF_REVERSED)
      53             :   return (setvbuf (stream, _IOLBF, local_linebuf, LBUF_BUFSIZE));
      54             : #  else /* !SETVBUF_REVERSED */
      55    18286500 :   return (setvbuf (stream, local_linebuf, _IOLBF, LBUF_BUFSIZE));
      56             : #  endif /* !SETVBUF_REVERSED */
      57             : # else /* !HAVE_SETVBUF */
      58             : 
      59             :   setlinebuf (stream);
      60             :   return (0);
      61             : 
      62             : #endif /* !HAVE_SETVBUF */
      63             : }