Add utility function to get windows packaging directory to avoid memory leaks

There were a few other small leaks in pbd and evoral test code but I didn't
bother changing them. Perhaps this function would be better off in PBD:: so it
can be used everywhere.

4 files changed, 29 insertions, 4 deletions

diff --git a/libs/ardour/ardour/filesystem_paths.h b/libs/ardour/ardour/filesystem_paths.h
index afa66453eb..cc1a21c45e 100644
--- a/libs/ardour/ardour/filesystem_paths.h
+++ b/libs/ardour/ardour/filesystem_paths.h
@@ -78,6 +78,13 @@ namespace ARDOUR {
 	 * @return our 'Windows' search path ( corresponds to <install_dir>/share/ardour3 )
 	 */
 	LIBARDOUR_API PBD::Searchpath windows_search_path ();
+
+	/**
+	 * @return Convenience function that calls
+	 * g_win32_get_package_installation_directory_of_module but returns a
+	 * std::string
+	 */
+	LIBARDOUR_API std::string windows_package_directory_path ();
 #endif
 } // namespace ARDOUR
 
diff --git a/libs/ardour/filesystem_paths.cc b/libs/ardour/filesystem_paths.cc
index fe1afd85d8..7e9b4e1857 100644
--- a/libs/ardour/filesystem_paths.cc
+++ b/libs/ardour/filesystem_paths.cc
@@ -200,7 +200,7 @@ std::string
 ardour_dll_directory ()
 {
 #ifdef PLATFORM_WINDOWS
-	std::string dll_dir_path(g_win32_get_package_installation_directory_of_module(NULL));
+	std::string dll_dir_path(windows_package_directory_path());
 	dll_dir_path = Glib::build_filename (dll_dir_path, "lib");
 	return Glib::build_filename (dll_dir_path, LIBARDOUR);
 #else
@@ -217,10 +217,27 @@ ardour_dll_directory ()
 Searchpath
 windows_search_path ()
 {
-	std::string dll_dir_path(g_win32_get_package_installation_directory_of_module(NULL));
+	std::string dll_dir_path(windows_package_directory_path());
 	dll_dir_path = Glib::build_filename (dll_dir_path, "share");
 	return Glib::build_filename (dll_dir_path, LIBARDOUR);
 }
+
+std::string
+windows_package_directory_path ()
+{
+	char* package_dir =
+	    g_win32_get_package_installation_directory_of_module (NULL);
+
+	if (package_dir == NULL) {
+		fatal << string_compose (_("Cannot determine %1 package directory"),
+		                           PROGRAM_NAME) << endmsg;
+		// not reached
+	}
+
+	std::string package_dir_path(package_dir);
+	g_free(package_dir);
+	return package_dir_path;
+}
 #endif
 
 Searchpath
diff --git a/libs/ardour/plugin_manager.cc b/libs/ardour/plugin_manager.cc
index 4eb67db48d..7a14154d3c 100644
--- a/libs/ardour/plugin_manager.cc
+++ b/libs/ardour/plugin_manager.cc
@@ -123,7 +123,7 @@ PluginManager::PluginManager ()
 
 #ifdef PLATFORM_WINDOWS
 	// on windows the .exe needs to be in the same folder with libardour.dll
-	vstsp += Glib::build_filename(g_win32_get_package_installation_directory_of_module (0), "bin");
+	vstsp += Glib::build_filename(windows_package_directory_path(), "bin");
 #else
 	// on Unices additional internal-use binaries are deployed to $libdir
 	vstsp += ARDOUR::ardour_dll_directory();
diff --git a/libs/ardour/test/test_util.cc b/libs/ardour/test/test_util.cc
index 3e9566c0e4..f717290ce9 100644
--- a/libs/ardour/test/test_util.cc
+++ b/libs/ardour/test/test_util.cc
@@ -27,6 +27,7 @@
 
 #include "ardour/session.h"
 #include "ardour/audioengine.h"
+#include "ardour/filesystem_paths.h"
 
 #include "test_util.h"
 
@@ -133,7 +134,7 @@ PBD::Searchpath
 test_search_path ()
 {
 #ifdef PLATFORM_WINDOWS
-	std::string wsp(g_win32_get_package_installation_directory_of_module(NULL));
+	std::string wsp(windows_package_directory_path());
 	return Glib::build_filename (wsp, "ardour_testdata");
 #else
 	return Glib::getenv("ARDOUR_TEST_PATH");