1 files changed, 71 insertions, 0 deletions
diff --git a/texinfo/info/dribble.c b/texinfo/info/dribble.c
new file mode 100644
index 00000000000..8e16cea4e45
--- /dev/null
+++ b/texinfo/info/dribble.c
@@ -0,0 +1,71 @@
+/* dribble.c -- Dribble files for Info. */
+
+/* This file is part of GNU Info, a program for reading online documentation
+   stored in Info format.
+
+   Copyright (C) 1993 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 2, 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, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+   Written by Brian Fox (bfox@ai.mit.edu). */
+
+#include <stdio.h>
+#include "dribble.h"
+
+/* When non-zero, it is a stream to write all input characters to for the
+   duration of this info session. */
+FILE *info_dribble_file = (FILE *)NULL;
+
+/* Open a dribble file named NAME, perhaps closing an already open one.
+   This sets the global variable INFO_DRIBBLE_FILE to the open stream. */
+void
+open_dribble_file (name)
+     char *name;
+{
+  /* Perhaps close existing dribble file. */
+  close_dribble_file ();
+
+  info_dribble_file = fopen (name, "w");
+
+#if defined (HAVE_SETVBUF)
+  if (info_dribble_file)
+#  if defined (SETVBUF_REVERSED)
+    setvbuf (info_dribble_file, _IONBF, (char *)NULL, 1);
+#  else
+    setvbuf (info_dribble_file, (char *)NULL, _IONBF, 1);
+#  endif /* !SETVBUF_REVERSED */
+#endif /* HAVE_SETVBUF */
+}
+
+/* If there is a dribble file already open, close it. */
+void
+close_dribble_file ()
+{
+  if (info_dribble_file)
+    {
+      fflush (info_dribble_file);
+      fclose (info_dribble_file);
+      info_dribble_file = (FILE *)NULL;
+    }
+}
+
+/* Write some output to our existing dribble file. */
+void
+dribble (byte)
+     unsigned char byte;
+{
+  if (info_dribble_file)
+    fwrite (&byte, sizeof (unsigned char), 1, info_dribble_file);
+}