Flatting the vendor dist tree of tzdata.

Approved by:	bde (mentor, implicit), des

1 files changed, 40 insertions, 0 deletions

diff --git a/yearistype.sh b/yearistype.sh
new file mode 100755
index 000000000000..66dbf89a2bdc
--- /dev/null
+++ b/yearistype.sh
@@ -0,0 +1,40 @@
+#! /bin/sh
+
+: 'This file is in the public domain, so clarified as of'
+: '2006-07-17 by Arthur David Olson.'
+
+: '@(#)yearistype.sh	8.2'
+
+case $#-$1 in
+	2-|2-0*|2-*[!0-9]*)
+		echo "$0: wild year - $1" >&2
+		exit 1 ;;
+esac
+
+case $#-$2 in
+	2-even)
+		case $1 in
+			*[24680])			exit 0 ;;
+			*)				exit 1 ;;
+		esac ;;
+	2-nonpres|2-nonuspres)
+		case $1 in
+			*[02468][048]|*[13579][26])	exit 1 ;;
+			*)				exit 0 ;;
+		esac ;;
+	2-odd)
+		case $1 in
+			*[13579])			exit 0 ;;
+			*)				exit 1 ;;
+		esac ;;
+	2-uspres)
+		case $1 in
+			*[02468][048]|*[13579][26])	exit 0 ;;
+			*)				exit 1 ;;
+		esac ;;
+	2-*)
+		echo "$0: wild type - $2" >&2 ;;
+esac
+
+echo "$0: usage is $0 year even|odd|uspres|nonpres|nonuspres" >&2
+exit 1