Make a backup of configuration when we load in a Version 2 file, and bump our config file version to 3.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/lib/config.h b/src/lib/config.h
index d50e585e3..90ebb0b33 100644
--- a/src/lib/config.h
+++ b/src/lib/config.h
@@ -729,6 +729,7 @@ private:
 	boost::shared_ptr<dcp::CertificateChain> create_certificate_chain ();
 	boost::filesystem::path directory_or (boost::optional<boost::filesystem::path> dir, boost::filesystem::path a) const;
 	void add_to_history_internal (std::vector<boost::filesystem::path>& h, boost::filesystem::path p);
+	void backup ();
 
 	template <class T>
 	void maybe_set (T& member, T new_value, Property prop = OTHER) {
@@ -844,6 +845,8 @@ private:
 	int _frames_in_memory_multiplier;
 	boost::optional<int> _decode_reduction;
 
+	static int const _current_version;
+
 	/** Singleton instance, or 0 */
 	static Config* _instance;
 };