handle UTF-8 command-line paths

src/common/file.cpp

@@ -245,28 +245,33 @@ void File::Printf(const char* format, ...) {
 	Write(s.data(), static_cast<uint32_t>(s.size()));
 }
 
+static std::filesystem::path WithoutTrailingSeparator(
+	const std::filesystem::path& path) {
+		if (!path.empty() && !path.has_filename() &&
+			path != path.root_path()) {
+			return path.parent_path();
+		}
+
+		return path;
+}
+
+
 bool File::IsDirectoryExisting(const std::filesystem::path& path) {
-	auto path_str = PathToGenericString(path);
+	return SysFileIsDirectoryExisting(WithoutTrailingSeparator(path));
-	return SysFileIsDirectoryExisting(path_str.ends_with("/") ? Common::RemoveLast(path_str, 1)
-	                                                          : path_str);
 }
 
 bool File::IsFileExisting(const std::filesystem::path& name) {
 	return SysFileIsFileExisting(name);
 }
 
-bool File::CreateDirectory(
+bool File::CreateDirectory(const std::filesystem::path& path) {
-    const std::filesystem::path& path) // @suppress("Member declaration not found")
+    return SysFileCreateDirectory(
-{
+        WithoutTrailingSeparator(path));
-	auto path_str = PathToGenericString(path);
-	return SysFileCreateDirectory(path_str.ends_with("/") ? Common::RemoveLast(path_str, 1)
-	                                                      : path_str);
 }
 
 bool File::DeleteDirectory(const std::filesystem::path& path) {
-	auto path_str = PathToGenericString(path);
+    return SysFileDeleteDirectory(
-	return SysFileDeleteDirectory(path_str.ends_with("/") ? Common::RemoveLast(path_str, 1)
+        WithoutTrailingSeparator(path));
-	                                                      : path_str);
 }
 
 bool File::CreateDirectories(const std::filesystem::path& path) {

src/common/stringUtils.h

@@ -34,6 +34,23 @@ inline std::string PathToGenericString(const std::filesystem::path& path) {
 #endif
 }
 
+inline std::filesystem::path PathFromUtf8(std::string_view text) {
+#if defined(__cpp_char8_t)
+	std::u8string utf8;
+	utf8.reserve(text.size());
+
+	for (const char ch: text) {
+		utf8.push_back(
+			static_cast<char8_t>(static_cast<unsigned char>(ch))
+		);
+	}
+
+	return std::filesystem::path(utf8);
+#else
+	return std::filesystem::u8path(text.begin(), text.end());
+#endif
+}
+
 inline bool EqualNoCase(std::string_view lhs, std::string_view rhs) {
 	if (lhs.size() != rhs.size()) {
 		return false;

src/kernel/fileSystem.cpp

@@ -251,16 +251,15 @@ void FileDescriptors::CloseAll() {
 void MountPoints::Mount(const std::filesystem::path& folder, const std::string& point) {
 	Common::LockGuard lock(m_mutex);
 
-	auto folder_str = Common::FixDirectorySlash(Common::PathToGenericString(folder));
 	auto point_str  = Common::FixDirectorySlash(point);
 
 	Umount(point_str);
 
 	MountPair p;
-	p.dir   = folder_str;
+	p.dir   = folder;
 	p.point = point_str;
 
-	m_mount_pairs.push_back(p);
+	m_mount_pairs.push_back(std::move(p));
 }
 
 void MountPoints::Umount(const std::string& folder_or_point) {
@@ -343,14 +342,17 @@ std::filesystem::path MountPoints::ResolvePath(const std::string& mounted_name)
 		while (rel_path.starts_with('/')) {
 			rel_path = Common::RemoveFirst(rel_path, 1);
 		}
+
+		const auto native_rel_path = Common::PathFromUtf8(rel_path);
+
 #if KYTY_PLATFORM == KYTY_PLATFORM_WINDOWS
 		if (HasWindowsForbiddenFilenameCharacter(rel_path)) {
 			::printf("FileSystem: Windows-incompatible guest filename: %s\n",
 			         mounted_name.c_str());
 		}
-		return p.dir / rel_path;
+		return p.dir / native_rel_path;
 #else
-		return ResolvePathIgnoringCase(p.dir / rel_path);
+		return ResolvePathIgnoringCase(p.dir / native_rel_path);
 #endif
 	}
 

src/main.cpp

@@ -10,6 +10,8 @@
 
 #include <charconv>
 #include <cstdio>
+#include <string_view>
+#include <vector>
 #include <fmt/format.h>
 #include <magic_enum.hpp>
 
@@ -207,15 +209,19 @@ static bool ParseArgs(int argc, char* argv[], RunOptions& options, bool& show_he
 			}
 
 			value = Common::FixFilenameSlash(value);
-			if (Common::File::IsDirectoryExisting(value)) {
+			const auto path = Common::PathFromUtf8(value);
-				options.app0_dir = value;
+
+			if (Common::File::IsDirectoryExisting(path)) {
+				options.app0_dir = path;
 				options.elf      = "/app0/eboot.bin";
-			} else if (Common::File::IsFileExisting(value)) {
+			} else if (Common::File::IsFileExisting(path)) {
-				options.app0_dir = Common::DirectoryWithoutFilename(value);
+				options.app0_dir = path.parent_path();
+
 				if (options.app0_dir.empty()) {
 					options.app0_dir = ".";
 				}
-				options.elf = "/app0/" + Common::FilenameWithoutDirectory(value);
+
+				options.elf = std::filesystem::path("/app0") / path.filename();
 			} else {
 				::printf("--game must point to an existing directory or ELF: %s\n", value.c_str());
 				return false;
@@ -226,7 +232,9 @@ static bool ParseArgs(int argc, char* argv[], RunOptions& options, bool& show_he
 				return false;
 			}
 			value = Common::FixFilenameSlash(value);
-			if (!Common::File::IsFileExisting(value)) {
+			const auto path = Common::PathFromUtf8(value);
+
+			if (!Common::File::IsFileExisting(path)) {
 				::printf("--game-patch must point to an existing file: %s\n", value.c_str());
 				return false;
 			}
@@ -291,14 +299,14 @@ static bool ParseArgs(int argc, char* argv[], RunOptions& options, bool& show_he
 				return false;
 			}
 		} else if (arg == "--shader-log-folder") {
-			options.config.shader_log_folder = value;
+			options.config.shader_log_folder = Common::PathFromUtf8(value);
 		} else if (arg == "--command-buffer-dump") {
 			if (!ParseBool(value, options.config.command_buffer_dump_enabled)) {
 				::printf("invalid boolean for %s: %s\n", arg.c_str(), value.c_str());
 				return false;
 			}
 		} else if (arg == "--command-buffer-dump-folder") {
-			options.config.command_buffer_dump_folder = value;
+			options.config.command_buffer_dump_folder = Common::PathFromUtf8(value);
 		} else if (arg == "--graphics-debug-dump") {
 			if (!ParseBool(value, options.config.graphics_debug_dump_enabled)) {
 				::printf("invalid boolean for %s: %s\n", arg.c_str(), value.c_str());
@@ -310,7 +318,7 @@ static bool ParseArgs(int argc, char* argv[], RunOptions& options, bool& show_he
 				return false;
 			}
 		} else if (arg == "--printf-output-file") {
-			options.config.printf_output_file = value;
+			options.config.printf_output_file = Common::PathFromUtf8(value);
 		} else if (arg == "--spirv-debug-printf") {
 			if (!ParseBool(value, options.config.spirv_debug_printf_enabled)) {
 				::printf("invalid boolean for %s: %s\n", arg.c_str(), value.c_str());
@@ -341,7 +349,7 @@ static bool ParseArgs(int argc, char* argv[], RunOptions& options, bool& show_he
 	return show_help || (!options.app0_dir.empty() && !options.elf.empty());
 }
 
-int main(int argc, char* argv[]) {
+static int Main(int argc, char* argv[]) {
 	VirtualMemory::Init();
 	InitializeThreads();
 
@@ -367,3 +375,34 @@ int main(int argc, char* argv[]) {
 
 	return 0;
 }
+
+#if KYTY_PLATFORM == KYTY_PLATFORM_WINDOWS
+
+int wmain(int argc, wchar_t* argv[]) {
+    std::vector<std::string> utf8_args;
+    utf8_args.reserve(static_cast<size_t>(argc));
+
+    for (int index = 0; index < argc; index++) {
+        const std::wstring_view wide(argv[index]);
+        const std::u16string utf16(wide.begin(), wide.end());
+
+        utf8_args.push_back(Common::Utf16ToUtf8(utf16));
+    }
+
+    std::vector<char*> utf8_argv;
+    utf8_argv.reserve(utf8_args.size());
+
+    for (auto& argument: utf8_args) {
+        utf8_argv.push_back(argument.data());
+    }
+
+    return Main(argc, utf8_argv.data());
+}
+
+#else
+
+int main(int argc, char* argv[]) {
+    return Main(argc, argv);
+}
+
+#endif