module os import strings #flag windows -l advapi32 #include #include // See https://docs.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-createsymboliclinkw fn C.CreateSymbolicLinkW(&u16, &u16, u32) int // See https://docs.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-createhardlinkw fn C.CreateHardLinkW(&u16, &u16, C.SECURITY_ATTRIBUTES) int fn C._getpid() int const executable_suffixes = ['.exe', '.bat', '.cmd', ''] pub const ( path_separator = '\\' path_delimiter = ';' ) // Ref - https://docs.microsoft.com/en-us/windows/desktop/winprog/windows-data-types // A handle to an object. pub type HANDLE = voidptr pub type HMODULE = voidptr // win: FILETIME // https://docs.microsoft.com/en-us/windows/win32/api/minwinbase/ns-minwinbase-filetime struct Filetime { dw_low_date_time u32 dw_high_date_time u32 } // win: WIN32_FIND_DATA // https://docs.microsoft.com/en-us/windows/win32/api/minwinbase/ns-minwinbase-win32_find_dataw struct Win32finddata { mut: dw_file_attributes u32 ft_creation_time Filetime ft_last_access_time Filetime ft_last_write_time Filetime n_file_size_high u32 n_file_size_low u32 dw_reserved0 u32 dw_reserved1 u32 c_file_name [260]u16 // max_path_len = 260 c_alternate_file_name [14]u16 // 14 dw_file_type u32 dw_creator_type u32 w_finder_flags u16 } struct ProcessInformation { mut: h_process voidptr h_thread voidptr dw_process_id u32 dw_thread_id u32 } struct StartupInfo { mut: cb u32 lp_reserved &u16 = unsafe { nil } lp_desktop &u16 = unsafe { nil } lp_title &u16 = unsafe { nil } dw_x u32 dw_y u32 dw_x_size u32 dw_y_size u32 dw_x_count_chars u32 dw_y_count_chars u32 dw_fill_attributes u32 dw_flags u32 w_show_window u16 cb_reserved2 u16 lp_reserved2 &u8 = unsafe { nil } h_std_input voidptr h_std_output voidptr h_std_error voidptr } struct SecurityAttributes { mut: n_length u32 lp_security_descriptor voidptr b_inherit_handle bool } struct C._utimbuf { actime int modtime int } fn C._utime(&char, voidptr) int fn init_os_args_wide(argc int, argv &&u8) []string { mut args_ := []string{len: argc} for i in 0 .. argc { args_[i] = unsafe { string_from_wide(&u16(argv[i])) } } return args_ } fn native_glob_pattern(pattern string, mut matches []string) ! { $if debug { // FindFirstFile() and FindNextFile() both have a globbing function. // Unfortunately this is not as pronounced as under Unix, but should provide some functionality eprintln('os.glob() does not have all the features on Windows as it has on Unix operating systems') } mut find_file_data := Win32finddata{} wpattern := pattern.replace('/', '\\').to_wide() h_find_files := C.FindFirstFile(wpattern, voidptr(&find_file_data)) defer { C.FindClose(h_find_files) } if h_find_files == C.INVALID_HANDLE_VALUE { return error('os.glob(): Could not get a file handle: ' + get_error_msg(int(C.GetLastError()))) } // save first finding fname := unsafe { string_from_wide(&find_file_data.c_file_name[0]) } if fname !in ['.', '..'] { mut fp := fname.replace('\\', '/') if find_file_data.dw_file_attributes & u32(C.FILE_ATTRIBUTE_DIRECTORY) > 0 { fp += '/' } matches << fp } // check and save next findings for i := 0; C.FindNextFile(h_find_files, voidptr(&find_file_data)) > 0; i++ { filename := unsafe { string_from_wide(&find_file_data.c_file_name[0]) } if filename in ['.', '..'] { continue } mut fpath := filename.replace('\\', '/') if find_file_data.dw_file_attributes & u32(C.FILE_ATTRIBUTE_DIRECTORY) > 0 { fpath += '/' } matches << fpath } } pub fn utime(path string, actime int, modtime int) ! { mut u := C._utimbuf{actime, modtime} if C._utime(&char(path.str), voidptr(&u)) != 0 { return error_with_code(posix_get_error_msg(C.errno), C.errno) } } pub fn ls(path string) ![]string { if path.len == 0 { return error('ls() expects a folder, not an empty string') } mut find_file_data := Win32finddata{} mut dir_files := []string{} // We can also check if the handle is valid. but using is_dir instead // h_find_dir := C.FindFirstFile(path.str, &find_file_data) // if (invalid_handle_value == h_find_dir) { // return dir_files // } // C.FindClose(h_find_dir) if !is_dir(path) { return error('ls() couldnt open dir "${path}": directory does not exist') } // NOTE: Should eventually have path struct & os dependant path seperator (eg os.PATH_SEPERATOR) // we need to add files to path eg. c:\windows\*.dll or :\windows\* path_files := '${path}\\*' // NOTE:TODO: once we have a way to convert utf16 wide character to utf8 // we should use FindFirstFileW and FindNextFileW h_find_files := C.FindFirstFile(path_files.to_wide(), voidptr(&find_file_data)) first_filename := unsafe { string_from_wide(&find_file_data.c_file_name[0]) } if first_filename != '.' && first_filename != '..' { dir_files << first_filename } for C.FindNextFile(h_find_files, voidptr(&find_file_data)) > 0 { filename := unsafe { string_from_wide(&find_file_data.c_file_name[0]) } if filename != '.' && filename != '..' { dir_files << filename.clone() } } C.FindClose(h_find_files) return dir_files } // mkdir creates a new directory with the specified path. pub fn mkdir(path string, params MkdirParams) ! { if path == '.' { return } apath := real_path(path) if !C.CreateDirectory(apath.to_wide(), 0) { return error('mkdir failed for "${apath}", because CreateDirectory returned: ' + get_error_msg(int(C.GetLastError()))) } } // Ref - https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/get-osfhandle?view=vs-2019 // get_file_handle retrieves the operating-system file handle that is associated with the specified file descriptor. pub fn get_file_handle(path string) HANDLE { cfile := vfopen(path, 'rb') or { return HANDLE(invalid_handle_value) } handle := HANDLE(C._get_osfhandle(fileno(cfile))) // CreateFile? - hah, no -_- return handle } // Ref - https://docs.microsoft.com/en-us/windows/win32/api/libloaderapi/nf-libloaderapi-getmodulefilenamea // get_module_filename retrieves the fully qualified path for the file that contains the specified module. // The module must have been loaded by the current process. pub fn get_module_filename(handle HANDLE) !string { unsafe { mut sz := 4096 // Optimized length mut buf := &u16(malloc_noscan(4096)) for { status := int(C.GetModuleFileNameW(handle, voidptr(&buf), sz)) match status { success { return string_from_wide2(buf, sz) } else { // Must handled with GetLastError and converted by FormatMessage return error('Cannot get file name from handle') } } } } panic('this should be unreachable') // TODO remove unreachable after loop } // Ref - https://docs.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-formatmessagea#parameters const ( format_message_allocate_buffer = 0x00000100 format_message_argument_array = 0x00002000 format_message_from_hmodule = 0x00000800 format_message_from_string = 0x00000400 format_message_from_system = 0x00001000 format_message_ignore_inserts = 0x00000200 ) // Ref - winnt.h const ( sublang_neutral = 0x00 sublang_default = 0x01 lang_neutral = sublang_neutral ) // Ref - https://docs.microsoft.com/en-us/windows/win32/debug/system-error-codes--12000-15999- const ( max_error_code = 15841 // ERROR_API_UNAVAILABLE ) // ptr_win_get_error_msg return string (voidptr) // representation of error, only for windows. fn ptr_win_get_error_msg(code u32) voidptr { mut buf := unsafe { nil } // Check for code overflow if code > u32(os.max_error_code) { return buf } C.FormatMessage(os.format_message_allocate_buffer | os.format_message_from_system | os.format_message_ignore_inserts, 0, code, C.MAKELANGID(os.lang_neutral, os.sublang_default), voidptr(&buf), 0, 0) return buf } // get_error_msg return error code representation in string. pub fn get_error_msg(code int) string { if code < 0 { // skip negative return '' } ptr_text := ptr_win_get_error_msg(u32(code)) if ptr_text == 0 { // compare with null return '' } return unsafe { string_from_wide(ptr_text) } } // execute starts the specified command, waits for it to complete, and returns its output. // In opposition to `raw_execute` this function will safeguard against content that is known to cause // a lot of problems when executing shell commands on Windows. pub fn execute(cmd string) Result { if cmd.contains(';') || cmd.contains('&&') || cmd.contains('||') || cmd.contains('\n') { return Result{ exit_code: -1 output: ';, &&, || and \\n are not allowed in shell commands' } } return unsafe { raw_execute(cmd) } } // raw_execute starts the specified command, waits for it to complete, and returns its output. // It's marked as `unsafe` to help emphasize the problems that may arise by allowing, for example, // user provided escape sequences. [unsafe] pub fn raw_execute(cmd string) Result { mut child_stdin := &u32(0) mut child_stdout_read := &u32(0) mut child_stdout_write := &u32(0) mut sa := SecurityAttributes{} sa.n_length = sizeof(C.SECURITY_ATTRIBUTES) sa.b_inherit_handle = true create_pipe_ok := C.CreatePipe(voidptr(&child_stdout_read), voidptr(&child_stdout_write), voidptr(&sa), 0) if !create_pipe_ok { error_num := int(C.GetLastError()) error_msg := get_error_msg(error_num) return Result{ exit_code: error_num output: 'exec failed (CreatePipe): ${error_msg}' } } set_handle_info_ok := C.SetHandleInformation(child_stdout_read, C.HANDLE_FLAG_INHERIT, 0) if !set_handle_info_ok { error_num := int(C.GetLastError()) error_msg := get_error_msg(error_num) return Result{ exit_code: error_num output: 'exec failed (SetHandleInformation): ${error_msg}' } } proc_info := ProcessInformation{} start_info := StartupInfo{ lp_reserved2: 0 lp_reserved: 0 lp_desktop: 0 lp_title: 0 cb: sizeof(C.PROCESS_INFORMATION) h_std_input: child_stdin h_std_output: child_stdout_write h_std_error: child_stdout_write dw_flags: u32(C.STARTF_USESTDHANDLES) } command_line := [32768]u16{} C.ExpandEnvironmentStringsW(cmd.to_wide(), voidptr(&command_line), 32768) create_process_ok := C.CreateProcessW(0, &command_line[0], 0, 0, C.TRUE, 0, 0, 0, voidptr(&start_info), voidptr(&proc_info)) if !create_process_ok { error_num := int(C.GetLastError()) error_msg := get_error_msg(error_num) return Result{ exit_code: error_num output: 'exec failed (CreateProcess) with code ${error_num}: ${error_msg} cmd: ${cmd}' } } C.CloseHandle(child_stdin) C.CloseHandle(child_stdout_write) buf := [4096]u8{} mut bytes_read := u32(0) mut read_data := strings.new_builder(1024) for { mut result := false unsafe { result = C.ReadFile(child_stdout_read, &buf[0], 1000, voidptr(&bytes_read), 0) read_data.write_ptr(&buf[0], int(bytes_read)) } if result == false || int(bytes_read) == 0 { break } } soutput := read_data.str() unsafe { read_data.free() } exit_code := u32(0) C.WaitForSingleObject(proc_info.h_process, C.INFINITE) C.GetExitCodeProcess(proc_info.h_process, voidptr(&exit_code)) C.CloseHandle(proc_info.h_process) C.CloseHandle(proc_info.h_thread) return Result{ output: soutput exit_code: int(exit_code) } } pub fn symlink(origin string, target string) ! { // this is a temporary fix for TCC32 due to runtime error // TODO: find the cause why TCC32 for Windows does not work without the compiletime option $if x64 || x32 { mut flags := 0 if is_dir(origin) { flags ^= 1 } flags ^= 2 // SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE res := C.CreateSymbolicLinkW(target.to_wide(), origin.to_wide(), flags) // 1 = success, != 1 failure => https://stackoverflow.com/questions/33010440/createsymboliclink-on-windows-10 if res != 1 { return error(get_error_msg(int(C.GetLastError()))) } if !exists(target) { return error('C.CreateSymbolicLinkW reported success, but symlink still does not exist') } return } return error('could not symlink') } pub fn link(origin string, target string) ! { res := C.CreateHardLinkW(target.to_wide(), origin.to_wide(), C.NULL) // 1 = success, != 1 failure => https://stackoverflow.com/questions/33010440/createsymboliclink-on-windows-10 if res != 1 { return error(get_error_msg(int(C.GetLastError()))) } if !exists(target) { return error('C.CreateHardLinkW reported success, but link still does not exist') } } pub fn (mut f File) close() { if !f.is_opened { return } f.is_opened = false C.fflush(f.cfile) C.fclose(f.cfile) } pub struct ExceptionRecord { pub: // status_ constants code u32 flags u32 record &ExceptionRecord = unsafe { nil } address voidptr param_count u32 // params []voidptr } pub struct ContextRecord { // TODO } pub struct ExceptionPointers { pub: exception_record &ExceptionRecord = unsafe { nil } context_record &ContextRecord = unsafe { nil } } pub type VectoredExceptionHandler = fn (&ExceptionPointers) u32 // This is defined in builtin because we use vectored exception handling // for our unhandled exception handler on windows // As a result this definition is commented out to prevent // duplicate definitions from displeasing the compiler // fn C.AddVectoredExceptionHandler(u32, VectoredExceptionHandler) pub fn add_vectored_exception_handler(first bool, handler VectoredExceptionHandler) { C.AddVectoredExceptionHandler(u32(first), C.PVECTORED_EXCEPTION_HANDLER(handler)) } // this is defined in builtin_windows.c.v in builtin // fn C.IsDebuggerPresent() bool pub fn debugger_present() bool { return C.IsDebuggerPresent() } pub fn uname() Uname { sys_and_ver := execute('cmd /c ver').output.split('[') nodename := hostname() machine := getenv('PROCESSOR_ARCHITECTURE') return Uname{ sysname: sys_and_ver[0].trim_space() nodename: nodename release: sys_and_ver[1].replace(']', '') version: sys_and_ver[0] + '[' + sys_and_ver[1] machine: machine } } pub fn hostname() string { hostname := [255]u16{} size := u32(255) res := C.GetComputerNameW(&hostname[0], &size) if !res { return get_error_msg(int(C.GetLastError())) } return unsafe { string_from_wide(&hostname[0]) } } pub fn loginname() string { loginname := [255]u16{} size := u32(255) res := C.GetUserNameW(&loginname[0], &size) if !res { return get_error_msg(int(C.GetLastError())) } return unsafe { string_from_wide(&loginname[0]) } } // ensure_folder_is_writable checks that `folder` exists, and is writable to the process // by creating an empty file in it, then deleting it. pub fn ensure_folder_is_writable(folder string) ! { if !exists(folder) { return error_with_code('`${folder}` does not exist', 1) } if !is_dir(folder) { return error_with_code('`folder` is not a folder', 2) } tmp_folder_name := 'tmp_perm_check_pid_' + getpid().str() tmp_perm_check := join_path_single(folder, tmp_folder_name) write_file(tmp_perm_check, 'test') or { return error_with_code('cannot write to folder "${folder}": ${err}', 3) } rm(tmp_perm_check)! } [inline] pub fn getpid() int { return C._getpid() } [inline] pub fn getppid() int { return 0 } [inline] pub fn getuid() int { return 0 } [inline] pub fn geteuid() int { return 0 } [inline] pub fn getgid() int { return 0 } [inline] pub fn getegid() int { return 0 } pub fn posix_set_permission_bit(path_s string, mode u32, enable bool) { // windows has no concept of a permission mask, so do nothing } // pub fn (mut c Command) start() ! { panic('not implemented') } pub fn (mut c Command) read_line() string { panic('not implemented') } pub fn (mut c Command) close() ! { panic('not implemented') }