move "been here before" path concept into libardour, and use it appropriately at startup

2 files changed, 19 insertions, 0 deletions

diff --git a/libs/ardour/ardour/filesystem_paths.h b/libs/ardour/ardour/filesystem_paths.h
index feca4ccb37..afa66453eb 100644
--- a/libs/ardour/ardour/filesystem_paths.h
+++ b/libs/ardour/ardour/filesystem_paths.h
@@ -45,6 +45,14 @@ namespace ARDOUR {
 	 */
 	LIBARDOUR_API std::string user_cache_directory ();
 
+	/**
+	 * @return the path used to store a persistent indication
+	 * that the given version of the program has been used before.
+	 * 
+	 * @param version is the version to check for. If unspecified, 
+	 * it defaults to the current (build-time) version of the program.
+	 */
+	LIBARDOUR_API std::string been_here_before_path (int version = -1);
 
 	/**
 	 * @return the path to the directory that contains the system wide ardour
diff --git a/libs/ardour/filesystem_paths.cc b/libs/ardour/filesystem_paths.cc
index 9005bd01a3..231bc84a3c 100644
--- a/libs/ardour/filesystem_paths.cc
+++ b/libs/ardour/filesystem_paths.cc
@@ -272,4 +272,15 @@ ardour_data_search_path ()
 	return search_path;
 }
 
+string
+been_here_before_path (int version)
+{
+	if (version < 0) {
+		version = atoi (PROGRAM_VERSION);
+	}
+
+	return Glib::build_filename (user_config_directory (version), string (".a") + to_string (version, std::dec));
+}
+
+
 } // namespace ARDOUR