termfmt 0.1.9

Opinionated formatting for library primatives with color and outputing to the terminal.
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

use std::fmt::Display;
use std::io::{stderr, stdout, IsTerminal};

pub trait TermOutput {
    fn termout<InteractiveResult, UnstyledResult>(
        self,
        interactive: impl Fn(&Self) -> InteractiveResult,
        unstyled: impl Fn(&Self) -> UnstyledResult,
    ) -> Self
    where
        InteractiveResult: Display,
        UnstyledResult: Display;

    fn termout_interactive<Result>(self, interactive: impl Fn(&Self) -> Result) -> Self
    where
        Result: Display;

    fn termout_unstyled<Result>(self, unstyled: impl Fn(&Self) -> Result) -> Self
    where
        Result: Display;

    fn termerr<InteractiveResult, UnstyledResult>(
        self,
        interactive: impl Fn(&Self) -> InteractiveResult,
        unstyled: impl Fn(&Self) -> UnstyledResult,
    ) -> Self
    where
        InteractiveResult: Display,
        UnstyledResult: Display;

    fn termerr_interactive<Result>(self, interactive: impl Fn(&Self) -> Result) -> Self
    where
        Result: Display;

    fn termerr_unstyled<Result>(self, unstyled: impl Fn(&Self) -> Result) -> Self
    where
        Result: Display;
}

impl<Value> TermOutput for Value {
    fn termout<InteractiveResult, UnstyledResult>(
        self,
        interactive: impl Fn(&Self) -> InteractiveResult,
        unstyled: impl Fn(&Self) -> UnstyledResult,
    ) -> Self
    where
        InteractiveResult: Display,
        UnstyledResult: Display,
    {
        if is_stdout_interactive() {
            println!("{}", interactive(&self));
        } else {
            println!("{}", unstyled(&self))
        }
        self
    }

    fn termout_interactive<Result>(self, interactive: impl Fn(&Self) -> Result) -> Self
    where
        Result: Display,
    {
        if is_stdout_interactive() {
            println!("{}", interactive(&self));
        }
        self
    }

    fn termout_unstyled<Result>(self, unstyled: impl Fn(&Self) -> Result) -> Self
    where
        Result: Display,
    {
        if !is_stdout_interactive() {
            println!("{}", unstyled(&self));
        }
        self
    }

    fn termerr<InteractiveResult, UnstyledResult>(
        self,
        interactive: impl Fn(&Self) -> InteractiveResult,
        unstyled: impl Fn(&Self) -> UnstyledResult,
    ) -> Self
    where
        InteractiveResult: Display,
        UnstyledResult: Display,
    {
        if is_stderr_interactive() {
            eprintln!("{}", interactive(&self));
        } else {
            eprintln!("{}", unstyled(&self));
        }
        self
    }

    fn termerr_interactive<Result>(self, interactive: impl Fn(&Self) -> Result) -> Self
    where
        Result: Display,
    {
        if is_stderr_interactive() {
            eprintln!("{}", interactive(&self));
        }
        self
    }

    fn termerr_unstyled<Result>(self, unstyled: impl Fn(&Self) -> Result) -> Self
    where
        Result: Display,
    {
        if !is_stderr_interactive() {
            eprintln!("{}", unstyled(&self));
        }
        self
    }
}

fn is_stdout_interactive() -> bool {
    stdout().is_terminal()
}

fn is_stderr_interactive() -> bool {
    stderr().is_terminal()
}