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
|
use std::{
fmt::{Display, Formatter},
io::Write,
ops::Deref,
};
/// Render result, containing the rendered text content.
#[derive(Default, Debug, PartialEq)]
pub struct RenderResult {
render_text: String,
}
impl Write for RenderResult {
fn write(&mut self, buf: &[u8]) -> std::io::Result<usize> {
let s = std::str::from_utf8(buf).map_err(|_| {
std::io::Error::new(std::io::ErrorKind::InvalidInput, "not valid UTF-8")
})?;
self.render_text.push_str(s);
Ok(buf.len())
}
fn flush(&mut self) -> std::io::Result<()> {
Ok(())
}
}
impl Display for RenderResult {
fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
writeln!(f, "{}", self.render_text.trim())
}
}
impl Deref for RenderResult {
type Target = str;
fn deref(&self) -> &Self::Target {
&self.render_text
}
}
impl RenderResult {
/// Appends the given text to the rendered content.
///
/// # Examples
///
/// ```
/// use mingling_core::RenderResult;
/// use std::ops::Deref;
///
/// let mut result = RenderResult::default();
/// result.print("Hello");
/// result.print(", world!");
/// assert_eq!(result.deref(), "Hello, world!");
/// ```
pub fn print(&mut self, text: &str) {
self.render_text.push_str(text);
}
/// Appends the given text followed by a newline to the rendered content.
///
/// # Examples
///
/// ```
/// use mingling_core::RenderResult;
/// use std::ops::Deref;
///
/// let mut result = RenderResult::default();
/// result.println("First line");
/// result.println("Second line");
/// assert_eq!(result.deref(), "First line\nSecond line\n");
/// ```
pub fn println(&mut self, text: &str) {
self.render_text.push_str(text);
self.render_text.push('\n');
}
/// Clears all rendered content.
///
/// # Examples
///
/// ```
/// use mingling_core::RenderResult;
/// use std::ops::Deref;
///
/// let mut result = RenderResult::default();
/// result.print("Some content");
/// assert!(!result.is_empty());
/// result.clear();
/// assert!(result.is_empty());
/// ```
pub fn clear(&mut self) {
self.render_text.clear();
}
}
|
