From 89a88a99c165eb3a562fb127ac7b477b81f8b5f0 Mon Sep 17 00:00:00 2001
From: Bill Joy <wnj@ucbvax.Berkeley.EDU>
Date: Fri, 23 Nov 1979 03:28:42 -0800
Subject: [PATCH] BSD 3 development Work on file
 usr/src/cmd/calendar/calendar.sh Work on file usr/src/cmd/calendar/Makefile
 Work on file usr/src/cmd/calendar/calendar.c

Synthesized-from: 3bsd
---
 usr/src/cmd/calendar/Makefile    |  8 +++++
 usr/src/cmd/calendar/calendar.c  | 52 ++++++++++++++++++++++++++++++++
 usr/src/cmd/calendar/calendar.sh | 19 ++++++++++++
 3 files changed, 79 insertions(+)
 create mode 100644 usr/src/cmd/calendar/Makefile
 create mode 100644 usr/src/cmd/calendar/calendar.c
 create mode 100755 usr/src/cmd/calendar/calendar.sh

diff --git a/usr/src/cmd/calendar/Makefile b/usr/src/cmd/calendar/Makefile
new file mode 100644
index 0000000000..3fd2e0064e
--- /dev/null
+++ b/usr/src/cmd/calendar/Makefile
@@ -0,0 +1,8 @@
+calendar:
+	cc -O -o calendar calendar.c
+install:
+	install -s calendar $(DESTDIR)/usr/lib
+	install -c calendar.sh $(DESTDIR)/usr/bin/calendar
+
+clean:
+	rm -f calendar
diff --git a/usr/src/cmd/calendar/calendar.c b/usr/src/cmd/calendar/calendar.c
new file mode 100644
index 0000000000..35ca4e375e
--- /dev/null
+++ b/usr/src/cmd/calendar/calendar.c
@@ -0,0 +1,52 @@
+/* /usr/lib/calendar produces an egrep -f file
+   that will select today's and tomorrow's
+   calendar entries, with special weekend provisions
+
+   used by calendar command
+*/
+#include <time.h>
+
+#define DAY (3600*24L)
+
+char *month[] = {
+	"[Jj]an",
+	"[Ff]eb",
+	"[Mm]ar",
+	"[Aa]pr",
+	"[Mm]ay",
+	"[Jj]un",
+	"[Jj]ul",
+	"[Aa]ug",
+	"[Ss]ep",
+	"[Oo]ct",
+	"[Nn]ov",
+	"[Dd]ec"
+};
+struct tm *localtime();
+
+tprint(t)
+long t;
+{
+	struct tm *tm;
+	tm = localtime(&t);
+	printf("(^|[ (,;])((%s[^ ]* *|%d/)0*%d)([^0123456789]|$)\n",
+		month[tm->tm_mon], tm->tm_mon + 1, tm->tm_mday);
+}
+
+main()
+{
+	long t;
+	time(&t);
+	tprint(t);
+	switch(localtime(&t)->tm_wday) {
+	case 5:
+		t += DAY;
+		tprint(t);
+	case 6:
+		t += DAY;
+		tprint(t);
+	default:
+		t += DAY;
+		tprint(t);
+	}
+}
diff --git a/usr/src/cmd/calendar/calendar.sh b/usr/src/cmd/calendar/calendar.sh
new file mode 100755
index 0000000000..606a6cb539
--- /dev/null
+++ b/usr/src/cmd/calendar/calendar.sh
@@ -0,0 +1,19 @@
+PATH=/bin:/usr/bin
+tmp=/tmp/cal$$
+trap "rm $tmp; exit" 0 1 2 13 15
+/usr/lib/calendar >$tmp
+case $# in
+0)
+	egrep -f $tmp calendar;;
+*)
+	sed '
+		s/\([^:]*\):.*:\(.*\):[^:]*$/y=\2 z=\1/
+	' /etc/passwd \
+	| while read x
+	do
+		eval $x
+		if test -r $y/calendar; then
+			egrep -f $tmp $y/calendar 2>/dev/null  | mail $z
+		fi
+	done
+esac
-- 
2.20.1