timeago 0.6.0

Given a Duration, lossily format it like in 'N days ago'. Parsing it back to Duration is not supported yet.
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

use super::super::{Language, TimeUnit};

#[derive(Default)]
pub struct Polish;
impl Polish {
    fn accusative(&self, tu: TimeUnit) -> &'static str {
        use TimeUnit::*;
        match tu {
            Nanoseconds => "nanosekundę",
            Microseconds => "mikrosekundę",
            Milliseconds => "milisekundę",
            Seconds => "sekundę",
            Minutes => "minutę",
            Hours => "godzinę",
            Days => "dzień",
            Weeks => "tydzień",
            Months => "miesiąc",
            Years => "lat",
        }
    }
    fn genitive(&self, tu: TimeUnit) -> &'static str {
        use TimeUnit::*;
        match tu {
            Nanoseconds => "nanosekundy",
            Microseconds => "mikrosekundy",
            Milliseconds => "milisekundy",
            Seconds => "sekundy",
            Minutes => "minuty",
            Hours => "godziny",
            Days => "dni",
            Weeks => "tygodnie",
            Months => "miesiące",
            Years => "lata",
        }
    }
    fn genitive_plural(&self, tu: TimeUnit) -> &'static str {
        use TimeUnit::*;
        match tu {
            Nanoseconds => "nanosekund",
            Microseconds => "mikrosekund",
            Milliseconds => "milisekund",
            Seconds => "sekund",
            Minutes => "minut",
            Hours => "godzin",
            Days => "dni",
            Weeks => "tygodni",
            Months => "miesięcy",
            Years => "lat",
        }
    }
}
impl Language for Polish {
    fn clone_boxed(&self) -> super::super::BoxedLanguage {
        Box::new(Self {})
    }
    fn too_low(&self) -> &'static str {
        "teraz"
    }
    fn too_high(&self) -> &'static str {
        "dawno"
    }
    fn ago(&self) -> &'static str {
        "temu"
    }
    fn get_word(&self, tu: TimeUnit, x: u64) -> &'static str {
        if tu == TimeUnit::Years && x == 1 {
            return "rok";
        }

        let last_two = x % 100;
        let last = x % 10;

        if (11..=20).contains(&last_two) {
            self.genitive_plural(tu)
        } else {
            match last {
                1 => self.accusative(tu),
                2..=4 => self.genitive(tu),
                0 | 5..=9 => self.genitive_plural(tu),
                _ => unreachable!(),
            }
        }
    }
}

#[test]
fn test() {
    use super::super::Formatter;
    use std::time::Duration;
    let f = Formatter::with_language(Polish);
    assert_eq!(f.convert(Duration::from_secs(60)), "1 minutę temu");
    assert_eq!(f.convert(Duration::from_secs(2)), "2 sekundy temu");
    assert_eq!(f.convert(Duration::from_secs(5)), "5 sekund temu");
    assert_eq!(f.convert(Duration::from_secs(12)), "12 sekund temu");
    assert_eq!(
        f.convert(Duration::from_secs(1 * 3600 * 12 * 366)),
        "6 miesięcy temu"
    );
    assert_eq!(
        f.convert(Duration::from_secs(1 * 3600 * 24 * 366)),
        "1 rok temu"
    );
    assert_eq!(
        f.convert(Duration::from_secs(2 * 3600 * 24 * 366)),
        "2 lata temu"
    );
    assert_eq!(
        f.convert(Duration::from_secs(4 * 3600 * 24 * 366)),
        "4 lata temu"
    );
    assert_eq!(
        f.convert(Duration::from_secs(5 * 3600 * 24 * 366)),
        "5 lat temu"
    );
    assert_eq!(
        f.convert(Duration::from_secs(10 * 3600 * 24 * 366)),
        "10 lat temu"
    );
    assert_eq!(
        f.convert(Duration::from_secs(11 * 3600 * 24 * 366)),
        "11 lat temu"
    );
    assert_eq!(
        f.convert(Duration::from_secs(14 * 3600 * 24 * 366)),
        "14 lat temu"
    );
    assert_eq!(
        f.convert(Duration::from_secs(15 * 3600 * 24 * 366)),
        "15 lat temu"
    );
    assert_eq!(
        f.convert(Duration::from_secs(19 * 3600 * 24 * 366)),
        "19 lat temu"
    );
    assert_eq!(
        f.convert(Duration::from_secs(20 * 3600 * 24 * 366)),
        "20 lat temu"
    );
    assert_eq!(
        f.convert(Duration::from_secs(21 * 3600 * 24 * 366)),
        "21 lat temu"
    );
    assert_eq!(
        f.convert(Duration::from_secs(32 * 3600 * 24 * 366)),
        "32 lata temu"
    );
    assert_eq!(
        f.convert(Duration::from_secs(99 * 3600 * 24 * 366)),
        "99 lat temu"
    );
    assert_eq!(
        f.convert(Duration::from_secs(100 * 3600 * 24 * 366)),
        "100 lat temu"
    );
    assert_eq!(
        f.convert(Duration::from_secs(101 * 3600 * 24 * 366)),
        "101 lat temu"
    );
    assert_eq!(
        f.convert(Duration::from_secs(104 * 3600 * 24 * 366)),
        "104 lata temu"
    );
    assert_eq!(
        f.convert(Duration::from_secs(111 * 3600 * 24 * 366)),
        "111 lat temu"
    );
}