Switch: Support file associations

CHANGES

@@ -64,6 +64,7 @@ Misc:
  - mGUI: Remember name and position of last loaded game
  - Core: Create game-related paths if they don't exist (fixes mgba.io/i/1446)
  - Qt: Add option to pause on minimizing window (closes mgba.io/i/1379)
+ - Switch: Support file associations
 
 0.7.2: (2019-05-25)
 Emulation fixes:

src/platform/switch/CMakeLists.txt

@@ -42,9 +42,10 @@ add_custom_command(OUTPUT control.nacp
 add_custom_command(OUTPUT romfs.bin
                    COMMAND ${CMAKE_COMMAND} -E make_directory romfs
                    COMMAND ${CMAKE_COMMAND} -E copy "${CMAKE_SOURCE_DIR}/res/font-new.png" romfs/
+                   COMMAND ${CMAKE_COMMAND} -E copy "${CMAKE_CURRENT_SOURCE_DIR}/fileassoc.cfg.in" romfs/
                    COMMAND ${BUILD_ROMFS} romfs romfs.bin
                    COMMAND ${CMAKE_COMMAND} -E remove_directory romfs
-               DEPENDS "${CMAKE_SOURCE_DIR}/res/font-new.png")
+               DEPENDS "${CMAKE_SOURCE_DIR}/res/font-new.png" "${CMAKE_CURRENT_SOURCE_DIR}/fileassoc.cfg.in")
 
 add_custom_target(${BINARY_NAME}.nro ALL
                   ${ELF2NRO} ${BINARY_NAME}.elf ${BINARY_NAME}.nro --romfs=romfs.bin --nacp=control.nacp --icon="${CMAKE_CURRENT_SOURCE_DIR}/icon.jpg"

src/platform/switch/fileassoc.cfg.in

@@ -0,0 +1,18 @@
+fileassoc={
+  app_path="%s";
+
+  targets=(
+    {
+      file_extension=".gba";
+    },
+    {
+      file_extension=".gb";
+    },
+    {
+      file_extension=".gbc";
+    },
+    {
+      file_extension=".sgb";
+    }
+  );
+};

src/platform/switch/main.c

@@ -12,6 +12,7 @@
 #include <mgba-util/gui.h>
 #include <mgba-util/gui/font.h>
 #include <mgba-util/gui/menu.h>
+#include <mgba-util/vfs.h>
 
 #include <switch.h>
 #include <EGL/egl.h>
@@ -921,6 +922,29 @@ int main(int argc, char* argv[]) {
 
 	audoutStartAudioOut();
 
+	if (argc > 0) {
+		struct VFile* vf = VFileOpen("romfs:/fileassoc.cfg.in", O_RDONLY);
+		if (vf) {
+			size_t size = vf->size(vf);
+			const char* arg0 = strchr(argv[0], '/');
+			char* buffer[2] = {
+				calloc(size + 1, 1),
+				malloc(size + strlen(arg0) + 1)
+			};
+			vf->read(vf, buffer[0], vf->size(vf));
+			vf->close(vf);
+			snprintf(buffer[1], size + strlen(arg0), buffer[0], arg0);
+			mkdir("sdmc:/config/nx-hbmenu/fileassoc", 0755);
+			vf = VFileOpen("sdmc:/config/nx-hbmenu/fileassoc/mgba.cfg", O_CREAT | O_TRUNC | O_WRONLY);
+			if (vf) {
+				vf->write(vf, buffer[1], strlen(buffer[1]));
+				vf->close(vf);
+			}
+			free(buffer[0]);
+			free(buffer[1]);
+		}
+	}
+
 	if (argc > 1) {
 		size_t i;
 		for (i = 0; runner.keySources[i].id; ++i) {