Initial commit

1 files changed, 31 insertions, 0 deletions

diff --git a/sys/libc/cungetl.c b/sys/libc/cungetl.c
new file mode 100644
index 00000000..5e0fa40c
--- /dev/null
+++ b/sys/libc/cungetl.c
@@ -0,0 +1,31 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+*/
+
+#define	import_spp
+#define	import_libc
+#define	import_xnames
+#include <iraf.h>
+
+#define	MAX_STRLEN	SZ_COMMAND
+
+
+/* C_UNGETLINE -- Push a string back into the input stream.  Pushback is last
+** in first out, i.e., the last string pushed back is the first one read by
+** GETC.  Strings (and single characters) may be pushed back until the FIO
+** pushback buffer overflows.
+*/
+int
+c_ungetline (
+  XINT	fd,			/* file				*/
+  char	*str			/* string to be pushed back	*/
+)
+{
+	XINT    x_fd = fd;
+	XCHAR	spp_str[MAX_STRLEN];
+
+
+	iferr (UNGETLINE (&x_fd, c_strupk (str, spp_str, MAX_STRLEN)))
+	    return (ERR);
+	else
+	    return (OK);
+}