From: Bill Joy <wnj@ucbvax.Berkeley.EDU>
Date: Sun, 1 Mar 1981 12:45:55 +0000 (-0800)
Subject: date and time created 81/02/28 20:45:55 by wnj
X-Git-Tag: BSD-4_1_snap-Snapshot-Development~2021
X-Git-Url: https://git.subgeniuskitty.com/unix-history/.git/commitdiff_plain/96287344888419f2345ade331280d106dca19fba?ds=inline

date and time created 81/02/28 20:45:55 by wnj

SCCS-vsn: usr.bin/calendar/calendar.c 4.1
---

diff --git a/usr/src/usr.bin/calendar/calendar.c b/usr/src/usr.bin/calendar/calendar.c
new file mode 100644
index 0000000000..60bcead326
--- /dev/null
+++ b/usr/src/usr.bin/calendar/calendar.c
@@ -0,0 +1,53 @@
+static	char *sccsid = "@(#)calendar.c	4.1 (Berkeley) 81/02/28";
+/* /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);
+	}
+}