1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
//! The `FileType` struct.
use crate::fs::FileTypeExt;
use std::fs;
/// `FileType`'s inner state.
#[derive(Debug, Copy, Clone, Eq, PartialEq, Hash)]
enum Inner {
/// A directory.
Dir,
/// A file.
File,
/// An unknown entity.
Unknown,
/// A `FileTypeExt` type.
Ext(FileTypeExt),
}
/// A structure representing a type of file with accessors for each file type.
///
/// This corresponds to [`std::fs::FileType`].
///
/// [`std::fs::FileType`]: https://doc.rust-lang.org/std/fs/struct.FileType.html
///
/// <details>
/// We need to define our own version because the libstd `FileType` doesn't have
/// a public constructor that we can use.
/// </details>
#[derive(Debug, Copy, Clone, Eq, PartialEq, Hash)]
pub struct FileType(Inner);
impl FileType {
/// Constructs a new instance of `Self` from the given `std::fs::FileType`.
#[inline]
pub(crate) fn from_std(std: fs::FileType) -> Self {
if std.is_dir() {
Self::dir()
} else if std.is_file() {
Self::file()
} else if let Some(ext) = FileTypeExt::from_std(std) {
Self::ext(ext)
} else {
Self::unknown()
}
}
/// Creates a `FileType` for which `is_dir()` returns `true`.
#[inline]
pub const fn dir() -> Self {
Self(Inner::Dir)
}
/// Creates a `FileType` for which `is_file()` returns `true`.
#[inline]
pub const fn file() -> Self {
Self(Inner::File)
}
/// Creates a `FileType` for which `is_unknown()` returns `true`.
#[inline]
pub const fn unknown() -> Self {
Self(Inner::Unknown)
}
/// Creates a `FileType` from extension type.
#[inline]
pub(crate) const fn ext(ext: FileTypeExt) -> Self {
Self(Inner::Ext(ext))
}
/// Tests whether this file type represents a directory.
///
/// This corresponds to [`std::fs::FileType::is_dir`].
///
/// [`std::fs::FileType::is_dir`]: https://doc.rust-lang.org/std/fs/struct.FileType.html#method.is_dir
#[inline]
pub fn is_dir(&self) -> bool {
self.0 == Inner::Dir
}
/// Tests whether this file type represents a regular file.
///
/// This corresponds to [`std::fs::FileType::is_file`].
///
/// [`std::fs::FileType::is_file`]: https://doc.rust-lang.org/std/fs/struct.FileType.html#method.is_file
#[inline]
pub fn is_file(&self) -> bool {
self.0 == Inner::File
}
/// Tests whether this file type represents a symbolic link.
///
/// This corresponds to [`std::fs::FileType::is_symlink`].
///
/// [`std::fs::FileType::is_symlink`]: https://doc.rust-lang.org/std/fs/struct.FileType.html#method.is_symlink
#[inline]
pub fn is_symlink(&self) -> bool {
if let Inner::Ext(ext) = self.0 {
ext.is_symlink()
} else {
false
}
}
}
#[cfg(unix)]
impl std::os::unix::fs::FileTypeExt for FileType {
#[inline]
fn is_block_device(&self) -> bool {
self.0 == Inner::Ext(crate::fs::FileTypeExt::block_device())
}
#[inline]
fn is_char_device(&self) -> bool {
self.0 == Inner::Ext(FileTypeExt::char_device())
}
#[inline]
fn is_fifo(&self) -> bool {
self.0 == Inner::Ext(FileTypeExt::fifo())
}
#[inline]
fn is_socket(&self) -> bool {
self.0 == Inner::Ext(FileTypeExt::socket())
}
}
#[cfg(target_os = "vxworks")]
impl std::os::vxworks::fs::FileTypeExt for FileType {
#[inline]
fn is_block_device(&self) -> bool {
self.0 == Inner::Ext(FileTypeExt::BlockDevice)
}
#[inline]
fn is_char_device(&self) -> bool {
self.0 == Inner::Ext(FileTypeExt::CharDevice)
}
#[inline]
fn is_fifo(&self) -> bool {
self.0 == Inner::Ext(FileTypeExt::Fifo)
}
#[inline]
fn is_socket(&self) -> bool {
self.0 == Inner::Ext(FileTypeExt::Socket)
}
}
#[cfg(all(windows, feature = "windows_file_type_ext"))]
impl std::os::windows::fs::FileTypeExt for FileType {
#[inline]
fn is_symlink_dir(&self) -> bool {
self.0 == Inner::Ext(FileTypeExt::symlink_dir())
}
#[inline]
fn is_symlink_file(&self) -> bool {
self.0 == Inner::Ext(FileTypeExt::symlink_file())
}
}