Loader, Frontends: Refactor loader creation and game loading

This allows frontends to keep a single loader and use it multiple times
e.g. for code loading and SMDH parsing.

1 files changed, 7 insertions, 43 deletions

diff --git a/src/core/loader/loader.cpp b/src/core/loader/loader.cpp
index af3f62248..c82688026 100644
--- a/src/core/loader/loader.cpp
+++ b/src/core/loader/loader.cpp
@@ -8,9 +8,7 @@
 #include "common/logging/log.h"
 #include "common/string_util.h"
 
-#include "core/file_sys/archive_romfs.h"
 #include "core/hle/kernel/process.h"
-#include "core/hle/service/fs/archive.h"
 #include "core/loader/3dsx.h"
 #include "core/loader/elf.h"
 #include "core/loader/ncch.h"
@@ -67,6 +65,9 @@ FileType GuessFromExtension(const std::string& extension_) {
     if (extension == ".3dsx")
         return FileType::THREEDSX;
 
+    if (extension == ".cia")
+        return FileType::CIA;
+
     return FileType::Unknown;
 }
 
@@ -108,15 +109,15 @@ std::unique_ptr<AppLoader> GetLoader(FileUtil::IOFile&& file, FileType type,
         return std::make_unique<AppLoader_NCCH>(std::move(file), filepath);
 
     default:
-        return std::unique_ptr<AppLoader>();
+        return nullptr;
     }
 }
 
-ResultStatus LoadFile(const std::string& filename) {
+std::unique_ptr<AppLoader> GetFileLoader(const std::string& filename) {
     FileUtil::IOFile file(filename, "rb");
     if (!file.IsOpen()) {
         LOG_ERROR(Loader, "Failed to load file %s", filename.c_str());
-        return ResultStatus::Error;
+        return nullptr;
     }
 
     std::string filename_filename, filename_extension;
@@ -133,44 +134,7 @@ ResultStatus LoadFile(const std::string& filename) {
 
     LOG_INFO(Loader, "Loading file %s as %s...", filename.c_str(), GetFileTypeString(type));
 
-    std::unique_ptr<AppLoader> app_loader = GetLoader(std::move(file), type, filename_filename, filename);
-
-    switch (type) {
-
-    // 3DSX file format...
-    // or NCCH/NCSD container formats...
-    case FileType::THREEDSX:
-    case FileType::CXI:
-    case FileType::CCI:
-    {
-        // Load application and RomFS
-        ResultStatus result = app_loader->Load();
-        if (ResultStatus::Success == result) {
-            Service::FS::RegisterArchiveType(std::make_unique<FileSys::ArchiveFactory_RomFS>(*app_loader), Service::FS::ArchiveIdCode::RomFS);
-            return ResultStatus::Success;
-        }
-        return result;
-    }
-
-    // Standard ELF file format...
-    case FileType::ELF:
-        return app_loader->Load();
-
-    // CIA file format...
-    case FileType::CIA:
-        return ResultStatus::ErrorNotImplemented;
-
-    // Error occurred durring IdentifyFile...
-    case FileType::Error:
-
-    // IdentifyFile could know identify file type...
-    case FileType::Unknown:
-    {
-        LOG_CRITICAL(Loader, "File %s is of unknown type.", filename.c_str());
-        return ResultStatus::ErrorInvalidFormat;
-    }
-    }
-    return ResultStatus::Error;
+    return GetLoader(std::move(file), type, filename_filename, filename);
 }
 
 } // namespace Loader