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

//! Filesystem operations to stage files.

use std::fmt;
use std::fs;
use std::path;

use failure;

/// Operation for setting up staged directory tree.
pub trait Action: fmt::Display {
    fn perform(&self) -> Result<(), failure::Error>;
}

/// Specifies a staged directory to be created.
#[derive(Clone, Debug)]
pub struct CreateDirectory {
    /// Staged file to perform op on.
    staged: path::PathBuf,
}

impl CreateDirectory {
    pub fn new<P>(staged: P) -> Self
    where
        P: Into<path::PathBuf>,
    {
        Self {
            staged: staged.into(),
        }
    }
}

impl fmt::Display for CreateDirectory {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        write!(f, "mkdir {:?}", self.staged)
    }
}

impl Action for CreateDirectory {
    fn perform(&self) -> Result<(), failure::Error> {
        fs::create_dir_all(&self.staged)?;

        Ok(())
    }
}

/// Specifies a file to be staged into the target directory.
#[derive(Clone, Debug)]
pub struct CopyFile {
    /// Staged file to perform op on.
    staged: path::PathBuf,
    ///  Specifies the full path of the file to be copied into the `staged` file.
    source: path::PathBuf,
}

impl CopyFile {
    pub fn new<D, S>(staged: D, source: S) -> Self
    where
        D: Into<path::PathBuf>,
        S: Into<path::PathBuf>,
    {
        Self {
            staged: staged.into(),
            source: source.into(),
        }
    }
}

impl fmt::Display for CopyFile {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        write!(f, "cp {:?} {:?}", self.source, self.staged)
    }
}

impl Action for CopyFile {
    fn perform(&self) -> Result<(), failure::Error> {
        if let Some(parent) = self.staged.parent() {
            fs::create_dir_all(parent)?;
        }
        fs::copy(&self.source, &self.staged)?;

        Ok(())
    }
}

/// Specifies a symbolic link file to be staged into the target directory.
#[derive(Clone, Debug)]
pub struct Symlink {
    /// Staged file to perform op on.
    staged: path::PathBuf,
    /// The literal path for the target to point to.
    target: path::PathBuf,
}

impl Symlink {
    pub fn new<S, T>(staged: S, target: T) -> Self
    where
        S: Into<path::PathBuf>,
        T: Into<path::PathBuf>,
    {
        Self {
            staged: staged.into(),
            target: target.into(),
        }
    }
}

impl fmt::Display for Symlink {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        write!(f, "ln -s {:?} {:?}", self.target, self.staged)
    }
}

impl Action for Symlink {
    fn perform(&self) -> Result<(), failure::Error> {
        if let Some(parent) = self.staged.parent() {
            fs::create_dir_all(parent)?;
        }
        #[allow(deprecated)]
        fs::soft_link(&self.staged, &self.target)?;

        Ok(())
    }
}

#[derive(Clone, Debug)]
pub struct Access {
    /// Staged file to perform op on.
    staged: path::PathBuf,
    /// Specifies  permissions to be applied to the `staged` file.
    op: String,
}

impl Access {
    pub fn new<P, S>(staged: P, op: S) -> Self
    where
        P: Into<path::PathBuf>,
        S: Into<String>,
    {
        Self {
            staged: staged.into(),
            op: op.into(),
        }
    }
}

impl fmt::Display for Access {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        write!(f, "TODO(epage): Figure out what is best here")
    }
}

impl Action for Access {
    fn perform(&self) -> Result<(), failure::Error> {
        bail!("TODO(epage): Figure out what is best here");
    }
}