First functional version of the Installer routines.

.gitmodules

@@ -7,3 +7,6 @@
 [submodule "thirdparty/ShaderRecomp"]
 	path = thirdparty/ShaderRecomp
 	url = https://github.com/hedge-dev/ShaderRecomp.git
+[submodule "thirdparty/libmspack"]
+	path = thirdparty/libmspack
+	url = https://github.com/kyz/libmspack

UnleashedRecomp/CMakeLists.txt

@@ -79,6 +79,30 @@ set(SWA_UI_CXX_SOURCES
     "ui/window.cpp"
 )
 
+set(SWA_INSTALL_CXX_SOURCES
+    "install/installer.cpp"
+    "install/iso_file_system.cpp"
+    "install/memory_mapped_file.cpp"
+    "install/xcontent_file_system.cpp"
+    "install/xex_patcher.cpp"
+    "install/hashes/apotos_shamar.cpp"
+    "install/hashes/chunnan.cpp"
+    "install/hashes/empire_city_adabat.cpp"
+    "install/hashes/game.cpp"
+    "install/hashes/holoska.cpp"
+    "install/hashes/mazuri.cpp"
+    "install/hashes/spagonia.cpp"
+    "install/hashes/update.cpp"
+)
+
+set(LIBMSPACK_PATH ${SWA_THIRDPARTY_ROOT}/libmspack/libmspack/mspack)
+
+set(LIBMSPACK_C_SOURCES
+    ${LIBMSPACK_PATH}/lzxd.c
+)
+
+set_source_files_properties(${LIBMSPACK_C_SOURCES} PROPERTIES SKIP_PRECOMPILE_HEADERS ON)
+
 set(SMOLV_SOURCE_DIR "${SWA_THIRDPARTY_ROOT}/ShaderRecomp/thirdparty/smol-v/source")
 
 set(SWA_CXX_SOURCES
@@ -95,7 +119,8 @@ set(SWA_CXX_SOURCES
     ${SWA_HID_CXX_SOURCES}
     ${SWA_PATCHES_CXX_SOURCES}
     ${SWA_UI_CXX_SOURCES}
-
+    ${SWA_INSTALL_CXX_SOURCES}
+    ${LIBMSPACK_C_SOURCES}
     "${SMOLV_SOURCE_DIR}/smolv.cpp"
 )
 
@@ -127,6 +152,7 @@ find_package(Stb REQUIRED)
 find_package(unofficial-concurrentqueue REQUIRED)
 find_package(imgui CONFIG REQUIRED)
 find_package(magic_enum CONFIG REQUIRED)
+find_package(unofficial-tiny-aes-c CONFIG REQUIRED)
 
 file(MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/D3D12)
 add_custom_command(TARGET UnleashedRecomp POST_BUILD
@@ -163,12 +189,15 @@ target_link_libraries(UnleashedRecomp PRIVATE
     Synchronization
     imgui::imgui
     magic_enum::magic_enum
+    unofficial::tiny-aes-c::tiny-aes-c
 )
 
 target_include_directories(UnleashedRecomp PRIVATE
     ${CMAKE_CURRENT_SOURCE_DIR}
     ${CMAKE_CURRENT_SOURCE_DIR}/api
-    ${SWA_THIRDPARTY_ROOT}/ddspp 
+    ${SWA_THIRDPARTY_ROOT}/ddspp
+    ${SWA_THIRDPARTY_ROOT}/TinySHA1
+    ${LIBMSPACK_PATH}
     ${Stb_INCLUDE_DIR}
     ${SMOLV_SOURCE_DIR}
 )

UnleashedRecomp/install/directory_file_system.h

@@ -0,0 +1,65 @@
+#pragma once
+
+#include <filesystem>
+
+#include "virtual_file_system.h"
+
+struct DirectoryFileSystem : VirtualFileSystem
+{
+    std::filesystem::path directoryPath;
+
+    DirectoryFileSystem(const std::filesystem::path &directoryPath)
+    {
+        this->directoryPath = directoryPath;
+    }
+
+    bool load(const std::string &path, uint8_t *fileData, size_t fileDataMaxByteCount) const override
+    {
+        std::ifstream fileStream(directoryPath / std::filesystem::path(std::u8string_view((const char8_t *)(path.c_str()))), std::ios::binary);
+        if (fileStream.is_open())
+        {
+            fileStream.read((char *)(fileData), fileDataMaxByteCount);
+            return !fileStream.bad();
+        }
+        else
+        {
+            return false;
+        }
+    }
+
+    size_t getSize(const std::string &path) const override
+    {
+        std::error_code ec;
+        size_t fileSize = std::filesystem::file_size(directoryPath / std::filesystem::path(std::u8string_view((const char8_t *)(path.c_str()))), ec);
+        if (!ec)
+        {
+            return fileSize;
+        }
+        else
+        {
+            return 0;
+        }
+    }
+
+    bool exists(const std::string &path) const override
+    {
+        if (path.empty())
+        {
+            return false;
+        }
+
+        return std::filesystem::exists(directoryPath / std::filesystem::path(std::u8string_view((const char8_t *)(path.c_str()))));
+    }
+
+    static std::unique_ptr<VirtualFileSystem> create(const std::filesystem::path &directoryPath)
+    {
+        if (std::filesystem::exists(directoryPath))
+        {
+            return std::make_unique<DirectoryFileSystem>(directoryPath);
+        }
+        else
+        {
+            return nullptr;
+        }
+    }
+};