asset_structure 0.1.2

minimal asset structure tree for projects
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
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

use std::fs;
use std::path::{Path, PathBuf};

type Dir = fs::ReadDir;

type AssetEntry = AssetStructure;

pub struct AssetStructure {
    local: AssetBranch,
    children: Vec<AssetEntry>,
}

impl AssetStructure {
    pub fn new<P: AsRef<Path>>(path: P) -> AssetStructure {
        AssetStructure {
            local: AssetBranch::new(path),
            children: Vec::new(),
        }
    }
    pub fn get_local<P: AsRef<Path>>(&self, path: P) -> Result<PathBuf, Error> {
        self.local.get(path)
    }
    pub fn get_global<P: AsRef<Path>>(&self, path: P) -> Result<Vec<PathBuf>, Error> {
        let mut matches = Vec::new();
        if let Ok(r) = self.local.get(path) {
            matches.push(r);
        }
        for i in &self.children {
            self.get_global_recursive(i.get_path(), &mut matches)?;
        }
        Ok(matches)
    }
    fn get_global_recursive<P: AsRef<Path>>(
        &self,
        path: P,
        buffer: &mut Vec<PathBuf>,
    ) -> Result<(), Error> {
        if let Ok(r) = self.local.get(path) {
            buffer.push(r);
        }
        for i in &self.children {
            self.get_global_recursive(i.get_path(), buffer)?;
        }
        Ok(())
    }
}

impl Asset for AssetStructure {
    fn get_path(&self) -> &Path {
        self.local.get_path()
    }
    fn is_alive(&self) -> bool {
        self.local.is_alive()
    }
}

impl AsRef<Path> for AssetStructure {
    fn as_ref(&self) -> &Path {
        self.local.as_ref()
    }
}

pub struct AssetBranch {
    path: Box<Path>,
    dir: Option<Dir>,
    alive: bool,
}
impl AssetBranch {
    pub fn new<P: AsRef<Path>>(path: P) -> AssetBranch {
        let dir = if let Ok(r) = fs::read_dir(&path) {
            Some(r)
        } else {
            None
        };
        AssetBranch {
            path: Box::from(path.as_ref()),
            dir,
            alive: path.as_ref().exists(),
        }
    }
    pub fn get<P: AsRef<Path>>(&self, path: P) -> Result<PathBuf, Error> {
        if !self.is_alive() {
            return Err(Error::new(
                ErrorKind::NotAlive,
                &format!("This branch is not alive: {:?}", self.path),
            ));
        }
        let get_path = self.path.join(path);
        if !get_path.exists() {
            return Err(Error::new(
                ErrorKind::NotFound,
                &format!("This branch was not found: {:?}", get_path),
            ));
        }
        Ok(get_path)
    }
}

impl AsRef<Path> for AssetBranch {
    fn as_ref(&self) -> &Path {
        self.path.as_ref()
    }
}

impl Asset for AssetBranch {
    fn get_path(&self) -> &Path {
        &self.path
    }
    fn is_alive(&self) -> bool {
        self.alive
    }
}
#[derive(Debug)]
pub struct Error {
    msg: Box<str>,
    kind: ErrorKind,
}
impl Error {
    pub fn new(kind: ErrorKind, msg: &str) -> Error {
        Error {
            kind,
            msg: Box::from(msg),
        }
    }
}
#[derive(Debug)]
pub enum ErrorKind {
    NotFound,
    NotAlive,
}

pub trait Asset {
    fn get_path(&self) -> &Path;
    fn is_alive(&self) -> bool;
}