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
use crate::fs::asyncify;

use std::io;
use std::path::Path;

/// A builder for creating directories in various manners.
///
/// This is a specialized version of [`std::fs::DirBuilder`] for usage on
/// the Tokio runtime.
#[derive(Debug, Default)]
pub struct DirBuilder {
    /// Indicates whether to create parent directories if they are missing.
    recursive: bool,

    /// Sets the Unix mode for newly created directories.
    #[cfg(unix)]
    pub(super) mode: Option<u32>,
}

impl DirBuilder {
    /// Creates a new set of options with default mode/security settings for all
    /// platforms and also non-recursive.
    ///
    /// This is an async version of [`std::fs::DirBuilder::new`].
    ///
    /// # Examples
    ///
    /// ```no_run
    /// use tokio::fs::DirBuilder;
    ///
    /// let builder = DirBuilder::new();
    /// ```
    pub fn new() -> Self {
        DirBuilder::default()
    }

    /// Indicates whether to create directories recursively (including all parent directories).
    /// Parents that do not exist are created with the same security and permissions settings.
    ///
    /// This option defaults to `false`.
    ///
    /// This is an async version of [`std::fs::DirBuilder::recursive`].
    ///
    /// # Examples
    ///
    /// ```no_run
    /// use tokio::fs::DirBuilder;
    ///
    /// let mut builder = DirBuilder::new();
    /// builder.recursive(true);
    /// ```
    pub fn recursive(&mut self, recursive: bool) -> &mut Self {
        self.recursive = recursive;
        self
    }

    /// Creates the specified directory with the configured options.
    ///
    /// It is considered an error if the directory already exists unless
    /// recursive mode is enabled.
    ///
    /// This is an async version of [`std::fs::DirBuilder::create`].
    ///
    /// # Errors
    ///
    /// An error will be returned under the following circumstances:
    ///
    /// * Path already points to an existing file.
    /// * Path already points to an existing directory and the mode is
    ///   non-recursive.
    /// * The calling process doesn't have permissions to create the directory
    ///   or its missing parents.
    /// * Other I/O error occurred.
    ///
    /// # Examples
    ///
    /// ```no_run
    /// use tokio::fs::DirBuilder;
    /// use std::io;
    ///
    /// #[tokio::main]
    /// async fn main() -> io::Result<()> {
    ///     DirBuilder::new()
    ///         .recursive(true)
    ///         .create("/tmp/foo/bar/baz")
    ///         .await?;
    ///
    ///     Ok(())
    /// }
    /// ```
    pub async fn create(&self, path: impl AsRef<Path>) -> io::Result<()> {
        let path = path.as_ref().to_owned();
        let mut builder = std::fs::DirBuilder::new();
        builder.recursive(self.recursive);

        #[cfg(unix)]
        {
            if let Some(mode) = self.mode {
                std::os::unix::fs::DirBuilderExt::mode(&mut builder, mode);
            }
        }

        asyncify(move || builder.create(path)).await
    }
}

feature! {
    #![unix]

    impl DirBuilder {
        /// Sets the mode to create new directories with.
        ///
        /// This option defaults to 0o777.
        ///
        /// # Examples
        ///
        ///
        /// ```no_run
        /// use tokio::fs::DirBuilder;
        ///
        /// let mut builder = DirBuilder::new();
        /// builder.mode(0o775);
        /// ```
        pub fn mode(&mut self, mode: u32) -> &mut Self {
            self.mode = Some(mode);
            self
        }
    }
}