Provide a method to use unicode command line arguments on Windows

For unicode command line characters Windows uses UTF-16, while Glib
and GTK use UTF-8. To solve that we retrieve the command line
via __wgetmainargs() and use g_utf16_to_utf8() to convert each argument.

The used method should support wildcards passed as arguments
(e.g. *.xml).

Two new, OS abstracted functions appear in linux.c (NOP), macos.c (NOP),
windows.c:

subsurface_command_line_init(...)
subsurface_command_line_exit(...)

which are being called in main()

Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/main.c b/main.c
index 7101b8b87..bc7bf7af1 100644
--- a/main.c
+++ b/main.c
@@ -223,6 +223,7 @@ int main(int argc, char **argv)
 
 	output_units = SI_units;
 
+	subsurface_command_line_init(&argc, &argv);
 	parse_xml_init();
 
 	init_ui(&argc, &argv);
@@ -268,6 +269,7 @@ int main(int argc, char **argv)
 	exit_ui();
 
 	parse_xml_exit();
+	subsurface_command_line_exit(&argc, &argv);
 
 #ifdef DEBUGFILE
 	if (debugfile)