loader: read a loose dump's display version from its own files

Mario Kart World 1.8.0 reported 1.0.0: GetDisplayVersion only knew
installed titles' metadata, and a loose ExeFS/RomFS dump has none. The
dump's version now comes from its control.nacp (in ExeFS, or up to three
directories above it), else from RomFS
System/Resource/ResourceSizeTable.Product.NNN (Mario Kart World has no
NACP; Product.180 is 1.8.0). Folder names are never parsed.

1 files changed, 10 insertions, 0 deletions

diff --git a/src/core/loader/loader.cpp b/src/core/loader/loader.cpp
index 5871ac412f..33a93573cf 100644
--- a/src/core/loader/loader.cpp
+++ b/src/core/loader/loader.cpp
@@ -16,6 +16,7 @@
 #include "common/string_util.h"
 #include "core/core.h"
 #include "core/file_sys/card_image.h"
+#include "core/file_sys/control_metadata.h"
 #include "core/file_sys/common_funcs.h"
 #include "core/file_sys/content_archive.h"
 #include "core/file_sys/registered_cache.h"
@@ -309,6 +310,15 @@ std::ostream& operator<<(std::ostream& os, ResultStatus status) {
 AppLoader::AppLoader(FileSys::VirtualFile file_) : file(std::move(file_)) {}
 AppLoader::~AppLoader() = default;
 
+ResultStatus AppLoader::ReadDisplayVersion(std::string& version) {
+    FileSys::NACP control;
+    if (const ResultStatus result = ReadControlData(control); result != ResultStatus::Success) {
+        return result;
+    }
+    version = control.GetVersionString();
+    return ResultStatus::Success;
+}
+
 /**
  * Get a loader for a file with a specific type
  * @param system The system context to use.