mirror of
https://github.com/vlang/v.git
synced 2023-08-10 21:13:21 +03:00
298 lines
8.6 KiB
V
298 lines
8.6 KiB
V
module os
|
|
|
|
#flag -lws2_32
|
|
#include <winsock2.h>
|
|
|
|
pub const (
|
|
path_separator = '\\'
|
|
)
|
|
|
|
// Ref - https://docs.microsoft.com/en-us/windows/desktop/winprog/windows-data-types
|
|
// A handle to an object.
|
|
type HANDLE voidptr
|
|
|
|
// win: FILETIME
|
|
// https://docs.microsoft.com/en-us/windows/win32/api/minwinbase/ns-minwinbase-filetime
|
|
struct Filetime {
|
|
dwLowDateTime u32
|
|
dwHighDateTime u32
|
|
}
|
|
|
|
// win: WIN32_FIND_DATA
|
|
// https://docs.microsoft.com/en-us/windows/win32/api/minwinbase/ns-minwinbase-_win32_find_dataw
|
|
struct Win32finddata {
|
|
mut:
|
|
dwFileAttributes u32
|
|
ftCreationTime Filetime
|
|
ftLastAccessTime Filetime
|
|
ftLastWriteTime Filetime
|
|
nFileSizeHigh u32
|
|
nFileSizeLow u32
|
|
dwReserved0 u32
|
|
dwReserved1 u32
|
|
cFileName [260]u16 // MAX_PATH = 260
|
|
cAlternateFileName [14]u16 // 14
|
|
dwFileType u32
|
|
dwCreatorType u32
|
|
wFinderFlags u16
|
|
}
|
|
|
|
struct ProcessInformation {
|
|
mut:
|
|
hProcess voidptr
|
|
hThread voidptr
|
|
dwProcessId u32
|
|
dwThreadId u32
|
|
}
|
|
|
|
struct StartupInfo {
|
|
mut:
|
|
cb u32
|
|
lpReserved &u16
|
|
lpDesktop &u16
|
|
lpTitle &u16
|
|
dwX u32
|
|
dwY u32
|
|
dwXSize u32
|
|
dwYSize u32
|
|
dwXCountChars u32
|
|
dwYCountChars u32
|
|
dwFillAttribute u32
|
|
dwFlags u32
|
|
wShowWindow u16
|
|
cbReserved2 u16
|
|
lpReserved2 byteptr
|
|
hStdInput voidptr
|
|
hStdOutput voidptr
|
|
hStdError voidptr
|
|
}
|
|
|
|
struct SecurityAttributes {
|
|
mut:
|
|
nLength u32
|
|
lpSecurityDescriptor voidptr
|
|
bInheritHandle bool
|
|
}
|
|
|
|
fn init_os_args_wide(argc int, argv &byteptr) []string {
|
|
mut args := []string
|
|
for i := 0; i < argc; i++ {
|
|
args << string_from_wide(&u16(argv[i]))
|
|
}
|
|
return args
|
|
}
|
|
|
|
pub fn ls(path string) ?[]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 := string_from_wide(&u16(find_file_data.cFileName))
|
|
if first_filename != '.' && first_filename != '..' {
|
|
dir_files << first_filename
|
|
}
|
|
for C.FindNextFile(h_find_files, voidptr(&find_file_data)) {
|
|
filename := string_from_wide(&u16(find_file_data.cFileName))
|
|
if filename != '.' && filename != '..' {
|
|
dir_files << filename.clone()
|
|
}
|
|
}
|
|
C.FindClose(h_find_files)
|
|
return dir_files
|
|
}
|
|
|
|
/*
|
|
pub fn is_dir(path string) bool {
|
|
_path := path.replace('/', '\\')
|
|
attr := C.GetFileAttributesW(_path.to_wide())
|
|
if int(attr) == int(C.INVALID_FILE_ATTRIBUTES) {
|
|
return false
|
|
}
|
|
if (int(attr) & C.FILE_ATTRIBUTE_DIRECTORY) != 0 {
|
|
return true
|
|
}
|
|
return false
|
|
}
|
|
*/
|
|
|
|
|
|
|
|
// mkdir creates a new directory with the specified path.
|
|
pub fn mkdir(path string) ?bool {
|
|
if path == '.' { return true }
|
|
apath := os.realpath( path )
|
|
if !C.CreateDirectory(apath.to_wide(), 0) {
|
|
return error('mkdir failed for "$apath", because CreateDirectory returned ' + get_error_msg(int(C.GetLastError())))
|
|
}
|
|
return true
|
|
}
|
|
|
|
// 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 {
|
|
mode := 'rb'
|
|
_fd := C._wfopen(path.to_wide(), mode.to_wide())
|
|
if _fd == 0 {
|
|
return HANDLE(INVALID_HANDLE_VALUE)
|
|
}
|
|
_handle := HANDLE(C._get_osfhandle(C._fileno(_fd))) // 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 {
|
|
mut sz := 4096 // Optimized length
|
|
mut buf := &u16(malloc(4096))
|
|
for {
|
|
status := int(C.GetModuleFileNameW(handle, voidptr(&buf), sz))
|
|
match status {
|
|
SUCCESS {
|
|
_filename := string_from_wide2(buf, sz)
|
|
return _filename
|
|
}
|
|
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 := voidptr(0)
|
|
// Check for code overflow
|
|
if code > u32(MAX_ERROR_CODE) {
|
|
return buf
|
|
}
|
|
C.FormatMessage(
|
|
FORMAT_MESSAGE_ALLOCATE_BUFFER
|
|
| FORMAT_MESSAGE_FROM_SYSTEM
|
|
| FORMAT_MESSAGE_IGNORE_INSERTS,
|
|
0, code, C.MAKELANGID(LANG_NEUTRAL, 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 string_from_wide(_ptr_text)
|
|
}
|
|
|
|
// exec starts the specified command, waits for it to complete, and returns its output.
|
|
pub fn exec(cmd string) ?Result {
|
|
if cmd.contains(';') || cmd.contains('&&') || cmd.contains('||') || cmd.contains('\n') {
|
|
return error(';, &&, || and \\n are not allowed in shell commands')
|
|
}
|
|
mut child_stdin := &u32(0)
|
|
mut child_stdout_read := &u32(0)
|
|
mut child_stdout_write := &u32(0)
|
|
mut sa := SecurityAttributes {}
|
|
sa.nLength = sizeof(C.SECURITY_ATTRIBUTES)
|
|
sa.bInheritHandle = true
|
|
|
|
create_pipe_ok := C.CreatePipe(voidptr(&child_stdout_read),
|
|
voidptr(&child_stdout_write), voidptr(&sa), 0)
|
|
if !create_pipe_ok {
|
|
error_msg := get_error_msg(int(C.GetLastError()))
|
|
return error('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_msg := get_error_msg(int(C.GetLastError()))
|
|
panic('exec failed (SetHandleInformation): $error_msg')
|
|
}
|
|
|
|
proc_info := ProcessInformation{}
|
|
mut start_info := StartupInfo{}
|
|
start_info.cb = sizeof(C.PROCESS_INFORMATION)
|
|
start_info.hStdInput = child_stdin
|
|
start_info.hStdOutput = child_stdout_write
|
|
start_info.hStdError = child_stdout_write
|
|
start_info.dwFlags = 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, C.TRUE, 0, 0, 0, voidptr(&start_info), voidptr(&proc_info))
|
|
if !create_process_ok {
|
|
error_msg := get_error_msg(int(C.GetLastError()))
|
|
return error('exec failed (CreateProcess): $error_msg')
|
|
}
|
|
C.CloseHandle(child_stdin)
|
|
C.CloseHandle(child_stdout_write)
|
|
buf := [1000]byte
|
|
mut bytes_read := u32(0)
|
|
mut read_data := ''
|
|
for {
|
|
readfile_result := C.ReadFile(child_stdout_read, buf, 1000, voidptr(&bytes_read), 0)
|
|
read_data += tos(buf, int(bytes_read))
|
|
if readfile_result == false || int(bytes_read) == 0 {
|
|
break
|
|
}
|
|
}
|
|
read_data = read_data.trim_space()
|
|
exit_code := u32(0)
|
|
C.WaitForSingleObject(proc_info.hProcess, C.INFINITE)
|
|
C.GetExitCodeProcess(proc_info.hProcess, voidptr(&exit_code))
|
|
C.CloseHandle(proc_info.hProcess)
|
|
C.CloseHandle(proc_info.hThread)
|
|
return Result {
|
|
output: read_data
|
|
exit_code: int(exit_code)
|
|
}
|
|
}
|
|
|
|
fn C.CreateSymbolicLinkW(&u16, &u16, u32) int
|
|
|
|
pub fn symlink(origin, target string) ?bool {
|
|
flags := if os.is_dir(origin) { 1 } else { 0 }
|
|
if C.CreateSymbolicLinkW(origin.to_wide(), target.to_wide(), u32(flags)) != 0 {
|
|
return true
|
|
}
|
|
return error(get_error_msg(int(C.GetLastError())))
|
|
}
|