Throw a better error on bad content kind.

3 files changed, 14 insertions, 2 deletions

diff --git a/src/exceptions.cc b/src/exceptions.cc
index 1ded4483..5c486d09 100644
--- a/src/exceptions.cc
+++ b/src/exceptions.cc
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2014 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2014-2018 Carl Hetherington <cth@carlh.net>
 
     This file is part of libdcp.
 
@@ -72,6 +72,12 @@ MissingAssetError::MissingAssetError (boost::filesystem::path path, AssetType ty
 
 }
 
+BadContentKindError::BadContentKindError (string content_kind)
+	: DCPReadError (String::compose("Bad content kind '%1'", content_kind))
+{
+
+}
+
 NotEncryptedError::NotEncryptedError (string const & what)
 	: runtime_error (String::compose ("%1 is not encrypted", what))
 {
diff --git a/src/exceptions.h b/src/exceptions.h
index 8bc6e550..d66e8944 100644
--- a/src/exceptions.h
+++ b/src/exceptions.h
@@ -136,6 +136,12 @@ public:
 	~MissingAssetError () throw () {}
 };
 
+class BadContentKindError : public DCPReadError
+{
+public:
+	BadContentKindError (std::string content_kind);
+};
+
 /** @class XMLError
  *  @brief An XML error
  */
diff --git a/src/util.cc b/src/util.cc
index 3d90ccaa..ac97af6e 100644
--- a/src/util.cc
+++ b/src/util.cc
@@ -214,7 +214,7 @@ dcp::content_kind_from_string (string kind)
 		return ADVERTISEMENT;
 	}
 
-	DCP_ASSERT (false);
+	throw BadContentKindError (kind);
 }
 
 /** @param s A string.