From 913896cbd99e414c325c9d47a987376ed6d9fffd Mon Sep 17 00:00:00 2001
From: bunnei <bunneidev@gmail.com>
Date: Sat, 7 Jul 2018 20:24:51 -0700
Subject: Revert "Virtual Filesystem (#597)"

This reverts commit 77c684c1140f6bf3fb7d4560d06d2efb1a2ee5e2.
---
 src/core/loader/loader.cpp | 63 ++++++++++++++++++++++++++++------------------
 1 file changed, 38 insertions(+), 25 deletions(-)

(limited to 'src/core/loader/loader.cpp')

diff --git a/src/core/loader/loader.cpp b/src/core/loader/loader.cpp
index 1574345a1..8831d8e83 100644
--- a/src/core/loader/loader.cpp
+++ b/src/core/loader/loader.cpp
@@ -6,7 +6,6 @@
 #include <string>
 #include "common/logging/log.h"
 #include "common/string_util.h"
-#include "core/file_sys/vfs_real.h"
 #include "core/hle/kernel/process.h"
 #include "core/loader/deconstructed_rom_directory.h"
 #include "core/loader/elf.h"
@@ -22,11 +21,11 @@ const std::initializer_list<Kernel::AddressMapping> default_address_mappings = {
     {0x1F000000, 0x600000, false}, // entire VRAM
 };
 
-FileType IdentifyFile(FileSys::VirtualFile file) {
+FileType IdentifyFile(FileUtil::IOFile& file, const std::string& filepath) {
     FileType type;
 
 #define CHECK_TYPE(loader)                                                                         \
-    type = AppLoader_##loader::IdentifyType(file);                                                 \
+    type = AppLoader_##loader::IdentifyType(file, filepath);                                       \
     if (FileType::Error != type)                                                                   \
         return type;
 
@@ -42,22 +41,25 @@ FileType IdentifyFile(FileSys::VirtualFile file) {
 }
 
 FileType IdentifyFile(const std::string& file_name) {
-    return IdentifyFile(FileSys::VirtualFile(std::make_shared<FileSys::RealVfsFile>(file_name)));
-}
+    FileUtil::IOFile file(file_name, "rb");
+    if (!file.IsOpen()) {
+        LOG_ERROR(Loader, "Failed to load file {}", file_name);
+        return FileType::Unknown;
+    }
 
-FileType GuessFromFilename(const std::string& name) {
-    if (name == "main")
-        return FileType::DeconstructedRomDirectory;
+    return IdentifyFile(file, file_name);
+}
 
-    const std::string extension = Common::ToLower(FileUtil::GetExtensionFromFilename(name));
+FileType GuessFromExtension(const std::string& extension_) {
+    std::string extension = Common::ToLower(extension_);
 
-    if (extension == "elf")
+    if (extension == ".elf")
         return FileType::ELF;
-    if (extension == "nro")
+    else if (extension == ".nro")
         return FileType::NRO;
-    if (extension == "nso")
+    else if (extension == ".nso")
         return FileType::NSO;
-    if (extension == "nca")
+    else if (extension == ".nca")
         return FileType::NCA;
 
     return FileType::Unknown;
@@ -91,47 +93,58 @@ const char* GetFileTypeString(FileType type) {
  * @param filepath the file full path (with name)
  * @return std::unique_ptr<AppLoader> a pointer to a loader object;  nullptr for unsupported type
  */
-static std::unique_ptr<AppLoader> GetFileLoader(FileSys::VirtualFile file, FileType type) {
+static std::unique_ptr<AppLoader> GetFileLoader(FileUtil::IOFile&& file, FileType type,
+                                                const std::string& filename,
+                                                const std::string& filepath) {
     switch (type) {
 
     // Standard ELF file format.
     case FileType::ELF:
-        return std::make_unique<AppLoader_ELF>(std::move(file));
+        return std::make_unique<AppLoader_ELF>(std::move(file), filename);
 
     // NX NSO file format.
     case FileType::NSO:
-        return std::make_unique<AppLoader_NSO>(std::move(file));
+        return std::make_unique<AppLoader_NSO>(std::move(file), filepath);
 
     // NX NRO file format.
     case FileType::NRO:
-        return std::make_unique<AppLoader_NRO>(std::move(file));
+        return std::make_unique<AppLoader_NRO>(std::move(file), filepath);
 
     // NX NCA file format.
     case FileType::NCA:
-        return std::make_unique<AppLoader_NCA>(std::move(file));
+        return std::make_unique<AppLoader_NCA>(std::move(file), filepath);
 
     // NX deconstructed ROM directory.
     case FileType::DeconstructedRomDirectory:
-        return std::make_unique<AppLoader_DeconstructedRomDirectory>(std::move(file));
+        return std::make_unique<AppLoader_DeconstructedRomDirectory>(std::move(file), filepath);
 
     default:
         return nullptr;
     }
 }
 
-std::unique_ptr<AppLoader> GetLoader(FileSys::VirtualFile file) {
-    FileType type = IdentifyFile(file);
-    FileType filename_type = GuessFromFilename(file->GetName());
+std::unique_ptr<AppLoader> GetLoader(const std::string& filename) {
+    FileUtil::IOFile file(filename, "rb");
+    if (!file.IsOpen()) {
+        LOG_ERROR(Loader, "Failed to load file {}", filename);
+        return nullptr;
+    }
+
+    std::string filename_filename, filename_extension;
+    Common::SplitPath(filename, nullptr, &filename_filename, &filename_extension);
+
+    FileType type = IdentifyFile(file, filename);
+    FileType filename_type = GuessFromExtension(filename_extension);
 
     if (type != filename_type) {
-        LOG_WARNING(Loader, "File {} has a different type than its extension.", file->GetName());
+        LOG_WARNING(Loader, "File {} has a different type than its extension.", filename);
         if (FileType::Unknown == type)
             type = filename_type;
     }
 
-    LOG_DEBUG(Loader, "Loading file {} as {}...", file->GetName(), GetFileTypeString(type));
+    LOG_DEBUG(Loader, "Loading file {} as {}...", filename, GetFileTypeString(type));
 
-    return GetFileLoader(std::move(file), type);
+    return GetFileLoader(std::move(file), type, filename_filename, filename);
 }
 
 } // namespace Loader
-- 
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