From f9ce27fd6538cc90be0f6908cb321d546d335d20 Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Wed, 11 Mar 2015 12:12:50 -0500
Subject: global ARDOUR signal to ask GUI to copy configuration files across
 versions

---
 libs/ardour/ardour/ardour.h           |  1 +
 libs/ardour/ardour/filesystem_paths.h |  2 +-
 libs/ardour/globals.cc                | 20 ++++++++++++++++++++
 3 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/libs/ardour/ardour/ardour.h b/libs/ardour/ardour/ardour.h
index 29cfa4b354..486d5def7d 100644
--- a/libs/ardour/ardour/ardour.h
+++ b/libs/ardour/ardour/ardour.h
@@ -51,6 +51,7 @@ namespace ARDOUR {
 	extern LIBARDOUR_API PBD::Signal3<void,std::string,std::string,bool> PluginScanMessage;
 	extern LIBARDOUR_API PBD::Signal1<void,int> PluginScanTimeout;
 	extern LIBARDOUR_API PBD::Signal0<void> GUIIdle;
+	extern LIBARDOUR_API PBD::Signal2<void,std::string,std::string> CopyConfigurationFiles;
 
 	/**
 	 * @param with_vst true to enable VST Support
diff --git a/libs/ardour/ardour/filesystem_paths.h b/libs/ardour/ardour/filesystem_paths.h
index 82b84f5424..feca4ccb37 100644
--- a/libs/ardour/ardour/filesystem_paths.h
+++ b/libs/ardour/ardour/filesystem_paths.h
@@ -32,7 +32,7 @@ namespace ARDOUR {
 	 * If @param version is negative, the build-time string PROGRAM_VERSION
 	 * will be used to determine the version number.
 	 *
-	 * @post user_config_directory() exists
+	 * @post user_config_directory() exists IF version was negative.
 	 *
 	 * 
 	 */
diff --git a/libs/ardour/globals.cc b/libs/ardour/globals.cc
index 5f98a130b1..6370947652 100644
--- a/libs/ardour/globals.cc
+++ b/libs/ardour/globals.cc
@@ -131,6 +131,7 @@ PBD::Signal1<void,std::string> ARDOUR::BootMessage;
 PBD::Signal3<void,std::string,std::string,bool> ARDOUR::PluginScanMessage;
 PBD::Signal1<void,int> ARDOUR::PluginScanTimeout;
 PBD::Signal0<void> ARDOUR::GUIIdle;
+PBD::Signal2<void,std::string,std::string> ARDOUR::CopyConfigurationFiles;
 
 namespace ARDOUR {
 extern void setup_enum_writer ();
@@ -238,6 +239,23 @@ lotsa_files_please ()
 #endif
 }
 
+static void
+maybe_copy_old_configuration_files ()
+{
+	int version = atoi (X_(PROGRAM_VERSION));
+
+	if (version <= 1) {
+		return;
+	}
+
+	string old_config_dir = user_config_directory (version-1);
+	string current_config_dir = user_config_directory ();
+	
+	if (Glib::file_test (old_config_dir, Glib::FILE_TEST_IS_DIR)) {
+		CopyConfigurationFiles (old_config_dir, current_config_dir); /* EMIT SIGNAL */
+	}
+}
+
 bool
 ARDOUR::init (bool use_windows_vst, bool try_optimization, const char* localedir)
 {
@@ -284,6 +302,8 @@ ARDOUR::init (bool use_windows_vst, bool try_optimization, const char* localedir
 	// allow ardour the absolute maximum number of open files
 	lotsa_files_please ();
 
+	maybe_copy_old_configuration_files ();
+	
 #ifdef HAVE_LRDF
 	lrdf_init();
 #endif
-- 
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