From 073b4584616c24be515f5b092ba1d095d6b168ec Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Hugo=20H=C3=B6rnquist?= <hugo@hornquist.se>
Date: Tue, 23 Apr 2019 17:08:05 +0200
Subject: Add some utilitiy functions.

---
 module/vcalendar/datetime.scm | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'module/vcalendar/datetime.scm')

diff --git a/module/vcalendar/datetime.scm b/module/vcalendar/datetime.scm
index b27ce2b0..d9813372 100644
--- a/module/vcalendar/datetime.scm
+++ b/module/vcalendar/datetime.scm
@@ -6,6 +6,7 @@
 
   #:export (parse-datetime
             event-overlaps?
+            overlapping?
             event-in?
             ev-time<?)
   )
@@ -26,6 +27,12 @@ Event must have the DTSTART and DTEND attribute set."
                       (attr event 'DTEND)
                       begin end))
 
+(define (overlapping? event-a event-b)
+  (timespan-overlaps? (attr event-a 'DTSTART)
+                      (attr event-a 'DTEND)
+                      (attr event-b 'DTSTART)
+                      (attr event-b 'DTEND)))
+
 (define (event-in? ev time)
   "Does event overlap the date that contains time."
   (let* ((date (time-utc->date time))
-- 
cgit v1.2.3