ezio 0.1.2

A crate for really easy IO.
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

use crate::prelude::*;

/// Read a single line from stdin.
pub fn read_line() -> String {
    stdin().read_line()
}

/// Print a string to stdout.
pub fn print(s: &str) {
    stdout().write(s)
}

/// Print a string to stderr.
pub fn eprint(s: &str) {
    stderr().write(s)
}

/// Get a handle to stdout.
pub fn stdout() -> Stdout {
    Stdout(std::io::stdout())
}

/// Get a handle to stderr.
pub fn stderr() -> Stderr {
    Stderr(std::io::stderr())
}

/// Get a handle to stdin.
pub fn stdin() -> Stdin {
    Stdin(std::io::stdin())
}

/// A handle to stdout.
#[derive(Debug)]
pub struct Stdout(std::io::Stdout);

/// A handle to stderr.
#[derive(Debug)]
pub struct Stderr(std::io::Stderr);

/// A handle to stdin.
#[derive(Debug)]
pub struct Stdin(std::io::Stdin);

impl Write for Stdout {
    fn write(&mut self, s: &str) {
        use std::io::Write;

        self.0
            .write_all(s.as_bytes())
            .expect("Failed to write to stdout");
    }
}

impl std::io::Write for Stdout {
    fn write(&mut self, b: &[u8]) -> Result<usize, std::io::Error> {
        self.0.write(b)
    }

    fn flush(&mut self) -> Result<(), std::io::Error> {
        self.0.flush()
    }
}

impl Write for Stderr {
    fn write(&mut self, s: &str) {
        use std::io::Write;

        self.0
            .write_all(s.as_bytes())
            .expect("Failed to write to stdout");
    }
}

impl std::io::Write for Stderr {
    fn write(&mut self, b: &[u8]) -> Result<usize, std::io::Error> {
        self.0.write(b)
    }

    fn flush(&mut self) -> Result<(), std::io::Error> {
        self.0.flush()
    }
}

impl Read for Stdin {
    fn read_all(&mut self) -> String {
        use std::io::Read;

        let mut buf = String::new();
        self.0
            .read_to_string(&mut buf)
            .expect("Failed to read from stdin");
        buf
    }

    fn read_line(&mut self) -> String {
        let mut buf = String::new();
        self.0
            .read_line(&mut buf)
            .expect("Failed to read from stdin");

        if !buf.is_empty() {
            buf.truncate(buf.len() - 1);
        }

        buf
    }
}

impl std::io::Read for Stdin {
    fn read(&mut self, buf: &mut [u8]) -> std::io::Result<usize> {
        self.0.read(buf)
    }
}

read_into_iter!(Stdin);

#[cfg(test)]
mod tests {
    use crate::prelude::*;

    #[test]
    fn stdout_write() {
        stdout().write("Hello!\n");
    }

    #[test]
    fn stderr_write() {
        stderr().write("Hello!\n");
    }

    #[test]
    fn stdout_writeln() {
        use std::io::Write;

        let mut out = stdout();
        writeln!(out, "World!").unwrap();
    }
}