fs: added /download0 mount

fs: get rid of double slashes

src/common/path_util.cpp

@@ -72,6 +72,7 @@ static auto UserPaths = [] {
     create_path(PathType::GameDataDir, user_dir / GAMEDATA_DIR);
     create_path(PathType::TempDataDir, user_dir / TEMPDATA_DIR);
     create_path(PathType::SysModuleDir, user_dir / SYSMODULES_DIR);
+    create_path(PathType::DownloadDir, user_dir / DOWNLOAD_DIR);
 
     return paths;
 }();

src/common/path_util.h

@@ -18,6 +18,7 @@ enum class PathType {
     TempDataDir,    // Where game temp data is stored.
     GameDataDir,    // Where game data is stored.
     SysModuleDir,   // Where system modules are stored.
+    DownloadDir,    // Where downloads/temp files are stored.
 };
 
 constexpr auto PORTABLE_DIR = "user";
@@ -31,6 +32,7 @@ constexpr auto SAVEDATA_DIR = "savedata";
 constexpr auto GAMEDATA_DIR = "data";
 constexpr auto TEMPDATA_DIR = "temp";
 constexpr auto SYSMODULES_DIR = "sys_modules";
+constexpr auto DOWNLOAD_DIR = "download";
 
 // Filenames
 constexpr auto LOG_FILE = "shad_log.txt";

src/core/file_sys/fs.cpp

@@ -26,23 +26,27 @@ void MntPoints::UnmountAll() {
 }
 
 std::filesystem::path MntPoints::GetHostPath(const std::string& guest_directory) {
-    const MntPair* mount = GetMount(guest_directory);
+    // Evil games like Turok2 pass double slashes e.g /app0//game.kpf
+    auto corrected_path = guest_directory;
+    size_t pos = corrected_path.find("//");
+    while (pos != std::string::npos) {
+        corrected_path.replace(pos, 2, "/");
+        pos = corrected_path.find("//", pos + 1);
+    }
+
+    const MntPair* mount = GetMount(corrected_path);
     if (!mount) {
-        return guest_directory;
+        return "";
     }
 
     // Nothing to do if getting the mount itself.
-    if (guest_directory == mount->mount) {
+    if (corrected_path == mount->mount) {
         return mount->host_path;
     }
 
     // Remove device (e.g /app0) from path to retrieve relative path.
-    u32 pos = mount->mount.size() + 1;
-    // Evil games like Turok2 pass double slashes e.g /app0//game.kpf
-    if (guest_directory[pos] == '/') {
-        pos++;
-    }
-    const auto rel_path = std::string_view(guest_directory).substr(pos);
+    pos = mount->mount.size() + 1;
+    const auto rel_path = std::string_view(corrected_path).substr(pos);
     const auto host_path = mount->host_path / rel_path;
     if (!NeedsCaseInsensiveSearch) {
         return host_path;

src/emulator.cpp

@@ -113,6 +113,13 @@ void Emulator::Run(const std::filesystem::path& file) {
     }
     mnt->Mount(mount_temp_dir, "/temp0"); // called in app_content ==> stat/mkdir
 
+    const auto& mount_download_dir =
+        Common::FS::GetUserPath(Common::FS::PathType::DownloadDir) / id;
+    if (!std::filesystem::exists(mount_download_dir)) {
+        std::filesystem::create_directory(mount_download_dir);
+    }
+    mnt->Mount(mount_download_dir, "/download0");
+
     // Initialize kernel and library facilities.
     Libraries::Kernel::init_pthreads();
     Libraries::InitHLELibs(&linker->GetHLESymbols());