Give a slightly better error whn trying to add a KDM using add-file (#1035).

3 files changed, 15 insertions, 0 deletions

diff --git a/src/lib/content_factory.cc b/src/lib/content_factory.cc
index 87f4e36a0..e5e73f890 100644
--- a/src/lib/content_factory.cc
+++ b/src/lib/content_factory.cc
@@ -170,6 +170,11 @@ content_factory (shared_ptr<const Film> film, boost::filesystem::path path)
 		} else if (ext == ".srt" || ext == ".ssa" || ext == ".ass") {
 			single.reset (new TextSubtitleContent (film, path));
 		} else if (ext == ".xml") {
+			cxml::Document doc;
+			doc.read_file (path);
+			if (doc.root_name() == "DCinemaSecurityMessage") {
+				throw KDMAsContentError ();
+			}
 			single.reset (new DCPSubtitleContent (film, path));
 		} else if (ext == ".mxf" && dcp::SMPTESubtitleAsset::valid_mxf (path)) {
 			single.reset (new DCPSubtitleContent (film, path));
diff --git a/src/lib/exceptions.cc b/src/lib/exceptions.cc
index 4590531b7..cf3708896 100644
--- a/src/lib/exceptions.cc
+++ b/src/lib/exceptions.cc
@@ -86,3 +86,7 @@ ProgrammingError::ProgrammingError (string file, int line)
 {
 
 }
+
+KDMAsContentError::KDMAsContentError ()
+	: runtime_error (_("This file is a KDM.  KDMs should be added to DCP content by right-clicking the content and choosing \"Add KDM\"."))
+{}
diff --git a/src/lib/exceptions.h b/src/lib/exceptions.h
index c2f82e15b..c1b1aef4b 100644
--- a/src/lib/exceptions.h
+++ b/src/lib/exceptions.h
@@ -252,4 +252,10 @@ public:
 	{}
 };
 
+class KDMAsContentError : public std::runtime_error
+{
+public:
+	KDMAsContentError ();
+};
+
 #endif