Add 'system_default_directory()' helper function

This is just a extern "C" wrapper around QStandardPaths::AppDataLocation,
while also making sure the entry exists.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/pref.h b/pref.h
index 8804ce260..c33b55438 100644
--- a/pref.h
+++ b/pref.h
@@ -94,6 +94,8 @@ extern struct preferences prefs, default_prefs;
 
 extern const char *system_divelist_default_font;
 extern double system_divelist_default_font_size;
+
+extern const char *system_default_directory(void);
 extern const char *system_default_filename();
 extern bool subsurface_ignore_font(const char *font);
 extern void subsurface_OS_pref_setup();