shelljougahara 0.0.2

A simulated shell written in Rust.
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

//! Users and groups

use std::collections::HashMap;

pub type UserId = u32;
pub type GroupId = u32;

#[derive(Debug, Clone)]
pub struct UserStore {
    users: HashMap<UserId, User>,
    next_user_id: UserId,
}

impl UserStore {
    pub fn new() -> Self {
        Self {
            users: HashMap::new(),
            next_user_id: 0,
        }
    }

    pub fn add_user(&mut self, name: String) -> UserId {
        let id = self.next_user_id;
        self.next_user_id += 1;
        self.users.insert(
            id,
            User {
                id,
                name,
                groups: vec![],
            },
        );
        id
    }

    pub fn find_by_username(&self, username: &str) -> Option<UserId> {
        self.users
            .iter()
            .find(|(_, user)| user.name == username)
            .map(|(id, _)| *id)
    }

    pub fn user(&self, id: UserId) -> Option<&User> {
        self.users.get(&id)
    }

    pub fn user_mut(&mut self, id: UserId) -> Option<&mut User> {
        self.users.get_mut(&id)
    }
}

impl Default for UserStore {
    fn default() -> Self {
        Self::new()
    }
}

#[derive(Debug, Clone)]
pub struct User {
    pub id: UserId,
    pub name: String,
    pub groups: Vec<GroupId>,
}

impl User {
    #[must_use]
    pub fn new(id: UserId, name: String) -> Self {
        Self {
            id,
            name,
            groups: vec![],
        }
    }

    pub fn add_group(&mut self, group_id: GroupId) {
        self.groups.push(group_id);
    }

    pub fn remove_group(&mut self, group_id: GroupId) {
        self.groups.retain(|g| *g != group_id);
    }
}

#[derive(Debug, Clone)]
pub struct GroupStore {
    pub groups: HashMap<GroupId, Group>,
    pub next_group_id: GroupId,
}

impl GroupStore {
    pub fn new() -> Self {
        Self {
            groups: HashMap::new(),
            next_group_id: 0,
        }
    }

    pub fn add_group(&mut self, name: String) -> GroupId {
        let id = self.next_group_id;
        self.next_group_id += 1;
        self.groups.insert(id, Group { id, name });
        id
    }

    pub fn group(&self, id: GroupId) -> Option<&Group> {
        self.groups.get(&id)
    }
}

impl Default for GroupStore {
    fn default() -> Self {
        Self::new()
    }
}

#[derive(Debug, Clone)]
pub struct Group {
    pub id: GroupId,
    pub name: String,
}