protobuf 0.0.3

Rust implementation of Google protocol buffers 
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

pub fn remove_to<'s>(s: &'s str, c: char) -> &'s str {
    match s.rfind(c) {
        Some(pos) => s.slice_from(pos + 1),
        None => s
    }
}

#[allow(dead_code)]
pub fn remove_from_last<'s>(s: &'s str, c: char) -> &'s str {
    match s.rfind(c) {
        Some(pos) => s.slice_to(pos),
        None => s,
    }
}

pub fn remove_suffix<'s>(s: &'s str, suffix: &str) -> &'s str {
    if !s.ends_with(suffix) {
        panic!();
    }
    s.slice_to(s.len() - suffix.len())
}

pub fn remove_prefix<'s>(s: &'s str, prefix: &str) -> &'s str {
    if !s.starts_with(prefix) {
        panic!();
    }
    s.slice_from(prefix.len())
}

#[cfg(test)]
mod test {

    use super::remove_to;
    use super::remove_from_last;
    use super::remove_prefix;
    use super::remove_suffix;

    #[test]
    fn test_remove_to() {
        assert_eq!("aaa", remove_to("aaa", '.'));
        assert_eq!("bbb", remove_to("aaa.bbb", '.'));
        assert_eq!("ccc", remove_to("aaa.bbb.ccc", '.'));
    }

    #[test]
    fn test_remove_from_last() {
        assert_eq!("aaa", remove_from_last("aaa", '.'));
        assert_eq!("aaa", remove_from_last("aaa.bbb", '.'));
        assert_eq!("aaa.bbb", remove_from_last("aaa.bbb.ccc", '.'));
    }

    #[test]
    fn test_remove_prefix() {
        assert_eq!("aaa", remove_prefix("bbbaaa", "bbb"));
    }

    #[test]
    #[should_fail]
    fn test_remove_prefix_fail() {
        remove_prefix("aaa", "bbb");
    }

    #[test]
    fn test_remove_suffix() {
        assert_eq!("bbb", remove_suffix("bbbaaa", "aaa"));
    }

    #[test]
    #[should_fail]
    fn test_remove_suffix_fail() {
        remove_suffix("aaa", "bbb");
    }
}