From fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4 Mon Sep 17 00:00:00 2001
From: Joseph Hunkeler <jhunkeler@gmail.com>
Date: Wed, 8 Jul 2015 20:46:52 -0400
Subject: Initial commit

---
 sys/fmtio/gargb.x | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 sys/fmtio/gargb.x

(limited to 'sys/fmtio/gargb.x')

diff --git a/sys/fmtio/gargb.x b/sys/fmtio/gargb.x
new file mode 100644
index 00000000..82d9e0cb
--- /dev/null
+++ b/sys/fmtio/gargb.x
@@ -0,0 +1,33 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<ctype.h>
+
+# GARGB -- Interpret the next token in the input as a boolean quantity
+# (token "y...." or "n....").
+
+procedure gargb (bval)
+
+bool	bval
+include	"scan.com"
+
+begin
+	if (sc_stopscan)
+	    return
+
+	while (IS_WHITE (sc_scanbuf[sc_ip]))
+	    sc_ip = sc_ip + 1
+
+	switch (sc_scanbuf[sc_ip]) {
+	case 'Y','y':
+	    bval = true
+	case 'N','n':
+	    bval = false
+	default:
+	    sc_stopscan = true
+	    return
+	}
+
+	while (IS_ALPHA(sc_scanbuf[sc_ip]) || sc_scanbuf[sc_ip] == '_')
+	    sc_ip = sc_ip + 1
+	sc_ntokens = sc_ntokens + 1
+end
-- 
cgit