fr-trie 0.0.4

Fuzzy Radix Trie
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
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191

//! A generic fuzzy compressed radix trie implementation.

pub mod trie;
pub mod key;
pub mod node;
pub mod matcher;
pub mod iterator;
pub mod glob;

#[cfg(test)]
mod tests {
    use crate::trie::Trie;
    use crate::glob::GlobMatcher;
    use crate::glob::acl::{AclTrie, Acl, Permissions};

    #[test]
    fn functional_test() {

        let mut trie = Trie::new();
        let a = String::from("a");
        let aa = String::from("aa");
        let aaaa = String::from("aaaa");
        let aabb = String::from("aabb");
        let aacc = String::from("aacc");
        let z = String::from("z");

        trie.insert(z.clone(), z.clone());
        trie.insert(aaaa.clone(), aaaa.clone());
        trie.insert(aabb.clone(), aabb.clone());
        trie.insert(aacc.clone(), aacc.clone());
        trie.insert(a.clone(), a.clone());

        trie.foreach(|tup| {
            let indent= String::from_utf8(vec![b' '; tup.0 *3]).unwrap();
            println!("{} {:?} = {:?}", indent, tup.1, tup.2);
        });

        trie.insert(aa.clone(), aa.clone());

        trie.foreach(|tup| {
            let indent= String::from_utf8(vec![b' '; tup.0 *3]).unwrap();
            println!("{} {:?} = {:?}", indent, tup.1, tup.2);
        });

        assert_eq!(trie.get::<GlobMatcher>(&a).unwrap(), a);
        assert_eq!(trie.get::<GlobMatcher>(&aaaa).unwrap(), aaaa);
        assert_eq!(trie.get::<GlobMatcher>(&aabb).unwrap(), aabb);
        assert_eq!(trie.get::<GlobMatcher>(&aacc).unwrap(), aacc);
        assert_eq!(trie.get::<GlobMatcher>(&z).unwrap(), z);

        let mut trie = AclTrie::new();

        trie.insert(Acl::new("de"), Permissions::READ);
        trie.insert(Acl::new("df"), Permissions::READ);

        trie.insert(Acl::new("a"), Permissions::READ);
        trie.insert(Acl::new("z"), Permissions::READ);
        trie.insert(Acl::new("b"), Permissions::WRITE);
        let x = trie.get::<GlobMatcher>(&Acl::new("b"));
        assert_eq!(Permissions::WRITE, x.unwrap());

        trie.insert(Acl::new("b"), Permissions::OWNER);
        trie.insert(Acl::new("ab"), Permissions::READ);
        trie.insert(Acl::new("aaa0a"), Permissions::READ);
        trie.insert(Acl::new("aaa0b"), Permissions::READ);
        trie.insert(Acl::new("ac"), Permissions::READ);
        trie.insert(Acl::new("j1*"), Permissions::WRITE);
        trie.insert(Acl::new("j0*t"), Permissions::all());
        let x = trie.get::<GlobMatcher>(&Acl::new("j01t"));
        assert_eq!(Permissions::all(), x.unwrap());
        let x = trie.get::<GlobMatcher>(&Acl::new("j1zz"));
        assert_eq!(Permissions::WRITE, x.unwrap());

        let x = trie.get::<GlobMatcher>(&Acl::new("b"));
        assert_eq!(Permissions::OWNER, x.unwrap());
        trie.insert(Acl::new("be"), Permissions::READ);
        trie.insert(Acl::new("bf"), Permissions::READ);

        let x = trie.get::<GlobMatcher>(&Acl::new("b"));
        assert_eq!(Permissions::OWNER, x.unwrap());

        trie.insert(Acl::new("ba"), Permissions::READ);
        trie.insert(Acl::new("aaaab"), Permissions::WRITE);

        trie.foreach(|tup| -> () {
            let indent= String::from_utf8(vec![b' '; tup.0 *3]).unwrap();
            println!("{} {} = {:?}", indent, tup.1, tup.2);
        });

        let x = trie.get::<GlobMatcher>(&Acl::new("aaaab"));
        assert_eq!(Permissions::WRITE, x.unwrap());

        let x = trie.get::<GlobMatcher>(&Acl::new("aaaabb"));
        assert!(x.is_none());

        let mut trie = AclTrie::new();
        trie.insert(Acl::new("abc"), Permissions::WRITE);
        trie.insert(Acl::new("a*"), Permissions::READ);
        trie.insert(Acl::new("ax*"), Permissions::CREATE);

        let x = trie.get_merge::<GlobMatcher>(&Acl::new("axy"));
        assert!(x.is_some());
        assert_eq!(Permissions::READ | Permissions::CREATE, x.unwrap());

        let mut trie = AclTrie::new();
        trie.insert(Acl::new("/path/*"), Permissions::READ);
        trie.insert(Acl::new("/path/to/resource"), Permissions::WRITE);

        // Multiget example 1
        let result = trie.get_merge::<GlobMatcher>(&Acl::new("/path/to/anything"));
        if let Some(value) = result {
            if value == Permissions::READ {
                println!("Expecting /path/* wilcard key is accessed");
            }
        }

        // Multiget example 2
        let result = trie.get_merge::<GlobMatcher>(&Acl::new("/path/to/resource"));
        if let Some(value) = result {
            if value == (Permissions::READ | Permissions::WRITE) {
                println!("Expecting both /path/* wilcard key and /path/to/resource is accessed");
            }
        }

        // Dump trie structure
        trie.foreach(|tup| {
            let indent= String::from_utf8(vec![b' '; tup.0 *3]).unwrap();
            println!("{} {} = {:?}", indent, tup.1, tup.2);
        });
    }

    #[test]
    fn bugfix_test() {

        let mut trie = AclTrie::new();
        trie.insert(Acl::new("/path/*"), Permissions::READ);
        trie.insert(Acl::new("/path/to/resource"), Permissions::WRITE);

        let x = trie.get_merge::<GlobMatcher>(&Acl::new("/path/other"));
        assert!(x.is_some());
        assert_eq!(Permissions::READ, x.unwrap());

        let x = trie.get_merge::<GlobMatcher>(&Acl::new("/path/to/resourc"));
        assert!(x.is_some());
        assert_eq!(Permissions::READ, x.unwrap());

        let x = trie.get_merge::<GlobMatcher>(&Acl::new("/path/to/resource"));
        assert!(x.is_some());
        assert_eq!(Permissions::READ | Permissions::WRITE, x.unwrap());

        let mut trie = AclTrie::new();
        trie.insert(Acl::new("abc"), Permissions::WRITE);
        trie.insert(Acl::new("a*"), Permissions::READ);

        let x = trie.get::<GlobMatcher>(&Acl::new("ax"));
        assert!(x.is_some());
        assert_eq!(Permissions::READ, x.unwrap());

        let mut trie = AclTrie::new();
        trie.insert(Acl::new("abc"), Permissions::WRITE);
        trie.insert(Acl::new("a*"), Permissions::READ);

        let x = trie.get::<GlobMatcher>(&Acl::new("a/x"));
        assert!(x.is_some());
        assert_eq!(Permissions::READ, x.unwrap());
    }

    #[test]
    fn serde_test() {
        let mut trie = AclTrie::new();
        trie.insert(Acl::new("aaaa"), Permissions::empty());
        trie.insert(Acl::new("aaaa"), Permissions::all());
        trie.insert(Acl::new("aabb"), Permissions::READ);
        trie.insert(Acl::new("t"), Permissions::READ);
        assert!(trie.get::<GlobMatcher>(&Acl::new("a")).is_none());
        assert!(trie.get::<GlobMatcher>(&Acl::new("z")).is_none());
        assert!(trie.get::<GlobMatcher>(&Acl::new("aaaaaaaaaa")).is_none());

        let serialized_string = serde_json::ser::to_string_pretty(&trie).unwrap();
        let other_trie = serde_json::de::from_str::<AclTrie>(&serialized_string).unwrap();
        match other_trie.get::<GlobMatcher>(&Acl::new("aaaa")) {
            None => assert!(false, "key not found after deserialization"),
            Some(result) => {
                assert_eq!(result, Permissions::all());
            }
        }
        let serialized_bytes = bincode::serialize(&other_trie).unwrap();
        let another_trie = bincode::deserialize::<AclTrie>(&serialized_bytes).unwrap();
        assert!(another_trie.get::<GlobMatcher>(&Acl::new("aabbcc")).is_none());
    }
}