shell-rs 0.1.2

Rust reimplementation of common coreutils APIs
Documentation 
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

extern crate glob;
extern crate nc;

use nc::mode_t;
use nc::Errno;
use std::path::Path;

use crate::expand_env;

/// Options for `mkdir()`.
pub struct MkDirOptions {
    /// No error if existing.
    pub exist_ok: bool,

    /// Expand environment path.
    pub expand_env: bool,

    /// Set file mode, as in `chmod()`.
    /// e.g. `0755` for `rwxr-xr-x`
    pub mode: mode_t,

    /// Make parent directories as needed.
    pub recursive: bool,
}

impl MkDirOptions {
    pub fn new() -> MkDirOptions {
        Self::default()
    }
}

impl Default for MkDirOptions {
    fn default() -> MkDirOptions {
        MkDirOptions {
            recursive: false,
            mode: 0o755,
            exist_ok: false,
            expand_env: true,
        }
    }
}

/// Make directories like `mkdir` command.
/// ```
/// extern crate shell_rs as shell;
///
/// use shell::{mkdir, MkDirOptions};
///
/// let options = MkDirOptions {
///     recursive: true,
///     exist_ok: true,
///     ..Default::default()
/// };
/// let ret = mkdir("~/Desktop/test1/test2", &options);
/// ```
pub fn mkdir<T: AsRef<str>>(directory: T, options: &MkDirOptions) -> Result<(), Errno> {
    let directory = if options.expand_env {
        expand_env(directory)
    } else {
        directory.as_ref().to_string()
    };

    let path = Path::new(&directory);
    do_mkdir(path, options.recursive, options.mode, options.exist_ok)
}

fn do_mkdir(p: &Path, recursive: bool, mode: mode_t, exist_ok: bool) -> Result<(), Errno> {
    if p.exists() {
        if exist_ok {
            return Ok(());
        } else {
            return Err(nc::EEXIST);
        }
    }
    if recursive {
        match p.parent() {
            Some(parent) => do_mkdir(parent, recursive, mode, true)?,
            None => return Err(nc::ENOENT),
        }
    }

    let p = p.to_str().unwrap();
    nc::mkdir(p, mode)
}

#[cfg(test)]
mod tests {
    use super::{mkdir, MkDirOptions};

    #[test]
    fn test_mkdir() {
        let options = MkDirOptions {
            recursive: true,
            exist_ok: true,
            ..Default::default()
        };
        let ret = mkdir("/tmp/test1/test2", &options);
        assert_eq!(ret, Ok(()));
    }
}