iof 0.5.0

Read from and write data to console or file in simple formats.
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

use fmt::Default;
use iof::*;
use std::{io::Cursor, num::NonZero, str::from_utf8};

#[test]
fn read_tuple_3() {
    let reader = Cursor::new("1 2 3".as_bytes());
    let mut reader = InputStream::new(reader);

    let vec: (u32, u32, u32) = reader.read();
    assert_eq!(vec, (1, 2, 3));

    assert!(<u32>::try_read_from(&mut reader, Default::new()).is_err());
}

#[test]
fn read_tuple_5() {
    let reader = Cursor::new("1 2 3.0 false 1".as_bytes());
    let mut reader = InputStream::new(reader);

    let vec: (u32, char, f64, bool, NonZero<u32>) = reader.read();
    assert_eq!(vec, (1, '2', 3.0, false, 1.try_into().unwrap()));

    assert!(<char>::try_read_from(&mut reader, Default::new()).is_err());
}

#[test]
#[should_panic = "expect more characters before EOF"]
fn try_read_tuple_3_insufficient_err() {
    let reader = Cursor::new("1".as_bytes());
    let mut reader = InputStream::new(reader);

    let _: (i32, i8, u32) = reader.read();
}

#[test]
#[should_panic = "stream did not contain valid UTF-8"]
fn try_read_tuple_3_encoding_err() {
    let reader = Cursor::new(b"1 \xff 3");
    let mut reader = InputStream::new(reader);

    let _: (i32, i8, u32) = reader.read();
}

#[test]
fn try_read_tuple_3_from_str_err() {
    let reader = Cursor::new("l m n".as_bytes());
    let mut reader = InputStream::new(reader);

    let vec: Result<(char, String, bool), _> = reader.try_read();
    let err = vec.unwrap_err();
    assert_eq!(err.to_string(), "error during converting a string \"n\" to a value of `bool`: provided string was not `true` or `false`");
    assert_eq!(
        format!("{:?}", err),
        "FromStrError(T3(ParseBoolError), \"n\", \"bool\")"
    );
}

#[test]
#[cfg_attr(
    feature = "c-compatible",
    should_panic = "found unexpected character at the end of the string \"-\" during converting it to a value of \"u32\""
)]
#[cfg_attr(
    not(feature = "c-compatible"),
    should_panic = "error during converting a string \"-3\" to a value of `u32`: invalid digit found in string"
)]
fn read_tuple_3_unexpected_char_err() {
    let reader = Cursor::new("1 2 -3".as_bytes());
    let mut reader = InputStream::new(reader);

    let _: (u32, u32, u32) = reader.read();
}

#[test]
fn read_tuple_12() {
    let reader = Cursor::new("1 2 3 4 5 6 7 8 9 10 11 12".as_bytes());
    let mut reader = InputStream::new(reader);

    let vec: (u32, u32, u32, u32, u32, u32, u32, u32, u32, u32, u32, u32) = reader.read();
    assert_eq!(vec, (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12));

    assert!(<u32>::try_read_from(&mut reader, Default::new()).is_err());
}

#[test]
fn write() {
    let mut buf = Vec::new();
    let vec = (1, 2, 3);
    unwrap!(vec.try_write_into(&mut buf));
    assert_eq!(from_utf8(&buf).unwrap(), "1 2 3");

    buf.clear();
    let vec = (1,);
    unwrap!(vec.try_write_into(&mut buf));
    assert_eq!(from_utf8(&buf).unwrap(), "1");

    buf.clear();
    let vec = ((1, 2), (3, 4));
    unwrap!(vec.try_write_into(&mut buf));
    assert_eq!(from_utf8(&buf).unwrap(), "1 2\n3 4");

    buf.clear();
    let vec = ();
    unwrap!(vec.try_write_into(&mut buf));
    assert_eq!(from_utf8(&buf).unwrap(), "");

    buf.clear();
    let vec = ((1, 2, 3), (4, 5, 6), (7, 8, 9));
    unwrap!(vec.try_write_into(&mut buf));
    assert_eq!(from_utf8(&buf).unwrap(), "1 2 3\n4 5 6\n7 8 9");

    buf.clear();
    let vec = ((1, 2, 3), (4, 5, 6), (7, 8, 9));
    unwrap!(vec.try_write_into_with_sep(&mut buf, &[' '; 0]));
    assert_eq!(from_utf8(&buf).unwrap(), "1 2 3\n4 5 6\n7 8 9");

    buf.clear();
    let vec = ((1, 2, 3), (4, 5, 6), (7, 8, 9));
    unwrap!(vec.try_write_into_with_sep(&mut buf, ' '));
    assert_eq!(from_utf8(&buf).unwrap(), "1 2 3 4 5 6 7 8 9");
}

#[test]
fn show() {
    use std::str::from_utf8;
    let mut buf = Vec::new();
    buf.clear();
    show!((1, 2, 3) => buf);
    assert_eq!(unwrap!(from_utf8(&buf)), "1 2 3\n");

    buf.clear();
    show!(((1, 2), (3, 4)) => buf);
    assert_eq!(unwrap!(from_utf8(&buf)), "1 2\n3 4\n");

    buf.clear();
    show!(() => buf);
    assert_eq!(unwrap!(from_utf8(&buf)), "\n");

    buf.clear();
    show!(((1, 2, 3), (4, 5, 6), (7, 8, 9)) => buf);
    assert_eq!(unwrap!(from_utf8(&buf)), "1 2 3\n4 5 6\n7 8 9\n");

    buf.clear();
    show!(((1, 2, 3), (4, 5, 6), (7, 8, 9)) => buf);
    assert_eq!(unwrap!(from_utf8(&buf)), "1 2 3\n4 5 6\n7 8 9\n");
}