1 files changed, 68 insertions, 0 deletions
diff --git a/sys/libc/setbuf.c b/sys/libc/setbuf.c
new file mode 100644
index 00000000..845c9f9d
--- /dev/null
+++ b/sys/libc/setbuf.c
@@ -0,0 +1,68 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+*/
+
+#define	import_spp
+#define	import_libc
+#define	import_stdio
+#define	import_fset
+#include <iraf.h>
+
+
+/* SETBUF -- Assign a buffer to be used by the i/o system to access a file.
+** Should be called after opening the file but before doing any i/o.
+*/
+void
+setbuf (
+  FILE	*fp,
+  char	*buf
+)
+{
+	void setbuffer();
+
+	setbuffer (fp, buf, BUFSIZ);
+}
+
+
+/* SETBUFFER -- Assign a buffer of arbitrary size to be used by the i/o system
+** to access a file.  Should be called after opening the file but before doing
+** any i/o.  If the the pointer buf has the value NULL, i/o is unbuffered
+** (or as close to unbuffered as we can manage).
+*/
+void
+setbuffer (
+  FILE	*fp,
+  char	*buf,
+  int	size
+)
+{
+	register XINT	fd = fileno(fp);
+
+
+	if (buf == NULL)
+	    c_fseti (fd, F_BUFSIZE, 1);
+	else {
+	    c_fseti (fd, F_BUFPTR, Memcptr(buf));
+	    c_fseti (fd, F_BUFSIZE, size);
+	}
+}
+
+
+/* SETLINEBUF -- Set line buffered mode for a file.  A line buffered file
+ * buffers each line and flushes it to the output device when newline is
+ * seen.  We may be even after doing i/o to the file.
+ */
+void
+setlinebuf (
+  FILE	*fp
+)
+{
+	register XINT	fd = fileno(fp);
+
+	extern int  c_fstati();
+	extern void c_fseti();
+
+
+	if (c_fstati (fd, F_BUFSIZE) < SZ_LINE)
+	    c_fseti (fd, F_BUFSIZE, SZ_LINE);
+	c_fseti (fd, F_FLUSHNL, YES);
+}