// Stat returns a FileInfo structure describing the named file.
// If there is an error, it will be of type *PathError.
func Stat(name string) (fi FileInfo, err error) {
if len(name) == 0 {
return nil, &PathError{"Stat", name, syscall.Errno(syscall.ERROR_PATH_NOT_FOUND)}
}
if name == DevNull {
return statDevNull()
}
var d syscall.Win32FileAttributeData
e := syscall.GetFileAttributesEx(syscall.StringToUTF16Ptr(name), syscall.GetFileExInfoStandard, (*byte)(unsafe.Pointer(&d)))
if e != nil {
return nil, &PathError{"GetFileAttributesEx", name, e}
}
path := name
if !isAbs(path) {
cwd, _ := Getwd()
path = cwd + `\` + path
}
return &fileStat{
name: basename(name),
size: mkSize(d.FileSizeHigh, d.FileSizeLow),
modTime: mkModTime(d.LastWriteTime),
mode: mkMode(d.FileAttributes),
sys: mkSys(path, d.LastAccessTime, d.CreationTime),
}, nil
}
// Lstat returns the FileInfo structure describing the named file.
// If the file is a symbolic link, the returned FileInfo
// describes the symbolic link. Lstat makes no attempt to follow the link.
// If there is an error, it will be of type *PathError.
func Lstat(name string) (FileInfo, error) {
if len(name) == 0 {
return nil, &PathError{"Lstat", name, syscall.Errno(syscall.ERROR_PATH_NOT_FOUND)}
}
if name == DevNull {
return &devNullStat, nil
}
fs := &fileStat{name: basename(name)}
namep, e := syscall.UTF16PtrFromString(name)
if e != nil {
return nil, &PathError{"Lstat", name, e}
}
e = syscall.GetFileAttributesEx(namep, syscall.GetFileExInfoStandard, (*byte)(unsafe.Pointer(&fs.sys)))
if e != nil {
return nil, &PathError{"GetFileAttributesEx", name, e}
}
fs.path = name
if !isAbs(fs.path) {
fs.path, e = syscall.FullPath(fs.path)
if e != nil {
return nil, e
}
}
return fs, nil
}
// Stat returns a FileInfo structure describing the named file and an error, if any.
// If name names a valid symbolic link, the returned FileInfo describes
// the file pointed at by the link and has fi.FollowedSymlink set to true.
// If name names an invalid symbolic link, the returned FileInfo describes
// the link itself and has fi.FollowedSymlink set to false.
func Stat(name string) (fi FileInfo, err error) {
if len(name) == 0 {
return nil, &PathError{"Stat", name, syscall.Errno(syscall.ERROR_PATH_NOT_FOUND)}
}
var d syscall.Win32FileAttributeData
e := syscall.GetFileAttributesEx(syscall.StringToUTF16Ptr(name), syscall.GetFileExInfoStandard, (*byte)(unsafe.Pointer(&d)))
if e != nil {
return nil, &PathError{"GetFileAttributesEx", name, e}
}
return toFileInfo(basename(name), d.FileAttributes, d.FileSizeHigh, d.FileSizeLow, d.CreationTime, d.LastAccessTime, d.LastWriteTime), nil
}
func IsSymlink(path string) (bool, error) {
var fa syscall.Win32FileAttributeData
namep, err := syscall.UTF16PtrFromString(path)
if err != nil {
return false, errors.Trace(err)
}
err = syscall.GetFileAttributesEx(namep, syscall.GetFileExInfoStandard, (*byte)(unsafe.Pointer(&fa)))
if err != nil {
return false, errors.Trace(err)
}
return fa.FileAttributes&FILE_ATTRIBUTE_REPARSE_POINT != 0, nil
}
func openDir(name string) (file *File, err error) {
var mask string
path := fixLongPath(name)
if len(path) == 2 && path[1] == ':' || (len(path) > 0 && path[len(path)-1] == '\\') { // it is a drive letter, like C:
mask = path + `*`
} else {
mask = path + `\*`
}
maskp, e := syscall.UTF16PtrFromString(mask)
if e != nil {
return nil, e
}
d := new(dirInfo)
r, e := syscall.FindFirstFile(maskp, &d.data)
if e != nil {
// FindFirstFile returns ERROR_FILE_NOT_FOUND when
// no matching files can be found. Then, if directory
// exists, we should proceed.
if e != syscall.ERROR_FILE_NOT_FOUND {
return nil, e
}
var fa syscall.Win32FileAttributeData
pathp, e := syscall.UTF16PtrFromString(path)
if e != nil {
return nil, e
}
e = syscall.GetFileAttributesEx(pathp, syscall.GetFileExInfoStandard, (*byte)(unsafe.Pointer(&fa)))
if e != nil {
return nil, e
}
if fa.FileAttributes&syscall.FILE_ATTRIBUTE_DIRECTORY == 0 {
return nil, e
}
d.isempty = true
}
d.path = path
if !isAbs(d.path) {
d.path, e = syscall.FullPath(d.path)
if e != nil {
return nil, e
}
}
f := newFile(r, name)
f.dirinfo = d
return f, nil
}
// Lstat returns the FileInfo structure describing the named file.
// If the file is a symbolic link, the returned FileInfo
// describes the symbolic link. Lstat makes no attempt to follow the link.
// If there is an error, it will be of type *PathError.
func Lstat(name string) (FileInfo, error) {
if len(name) == 0 {
return nil, &PathError{"Lstat", name, syscall.Errno(syscall.ERROR_PATH_NOT_FOUND)}
}
if name == DevNull {
return &devNullStat, nil
}
fs := &fileStat{name: basename(name)}
namep, e := syscall.UTF16PtrFromString(fixLongPath(name))
if e != nil {
return nil, &PathError{"Lstat", name, e}
}
e = syscall.GetFileAttributesEx(namep, syscall.GetFileExInfoStandard, (*byte)(unsafe.Pointer(&fs.sys)))
if e != nil {
if e != windows.ERROR_SHARING_VIOLATION {
return nil, &PathError{"GetFileAttributesEx", name, e}
}
// try FindFirstFile now that GetFileAttributesEx failed
var fd syscall.Win32finddata
h, e2 := syscall.FindFirstFile(namep, &fd)
if e2 != nil {
return nil, &PathError{"FindFirstFile", name, e}
}
syscall.FindClose(h)
fs.sys.FileAttributes = fd.FileAttributes
fs.sys.CreationTime = fd.CreationTime
fs.sys.LastAccessTime = fd.LastAccessTime
fs.sys.LastWriteTime = fd.LastWriteTime
fs.sys.FileSizeHigh = fd.FileSizeHigh
fs.sys.FileSizeLow = fd.FileSizeLow
}
fs.path = name
if !isAbs(fs.path) {
fs.path, e = syscall.FullPath(fs.path)
if e != nil {
return nil, e
}
}
return fs, nil
}
func openDir(name string) (file *File, err error) {
maskp, e := syscall.UTF16PtrFromString(name + `\*`)
if e != nil {
return nil, e
}
d := new(dirInfo)
r, e := syscall.FindFirstFile(maskp, &d.data)
if e != nil {
// FindFirstFile returns ERROR_FILE_NOT_FOUND when
// no matching files can be found. Then, if directory
// exists, we should proceed.
if e != syscall.ERROR_FILE_NOT_FOUND {
return nil, e
}
var fa syscall.Win32FileAttributeData
namep, e := syscall.UTF16PtrFromString(name)
if e != nil {
return nil, e
}
e = syscall.GetFileAttributesEx(namep, syscall.GetFileExInfoStandard, (*byte)(unsafe.Pointer(&fa)))
if e != nil {
return nil, e
}
if fa.FileAttributes&syscall.FILE_ATTRIBUTE_DIRECTORY == 0 {
return nil, e
}
d.isempty = true
}
d.path = name
if !isAbs(d.path) {
d.path, e = syscall.FullPath(d.path)
if e != nil {
return nil, e
}
}
f := newFile(r, name)
f.dirinfo = d
return f, nil
}
