Re-fix overlap checks for DCP referencing.

diff --git a/src/lib/overlaps.cc b/src/lib/overlaps.cc
new file mode 100644 (file)
index 0000000..983dc7a
--- /dev/null
+++ b/src/lib/overlaps.cc
@@ -0,0 +1,39 @@
+/*
+    Copyright (C) 2013-2016 Carl Hetherington <cth@carlh.net>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include "overlaps.h"
+#include "types.h"
+#include "content.h"
+#include <boost/foreach.hpp>
+
+using boost::shared_ptr;
+using boost::function;
+
+ContentList overlaps (ContentList cl, function<shared_ptr<ContentPart> (shared_ptr<const Content>)> part, DCPTime from, DCPTime to)
+{
+       ContentList overlaps;
+       DCPTimePeriod period (from, to);
+       BOOST_FOREACH (shared_ptr<Content> i, cl) {
+               if (part(i) && DCPTimePeriod(i->position(), i->end()).overlaps (period)) {
+                       overlaps.push_back (i);
+               }
+       }
+
+       return overlaps;
+}