no_std/
no_std.rs

1use tabled::{assert::assert_table, settings::style::Style, tables::CompactTable};
2
3fn main() {
4    let data = [
5        ["Debian", "1.1.1.1", "true"],
6        ["Arch", "127.1.1.1", "true"],
7        ["Manjaro", "Arch", "true"],
8    ];
9
10    let table = CompactTable::from(data).with(Style::modern());
11    let mut buf = [0; 1024 * 10];
12    let mut w = Writer::new(&mut buf);
13
14    table.fmt(&mut w).unwrap();
15
16    assert_table!(w.as_str(),
17        "┌─────────┬───────────┬──────┐"
18        "│ Debian  │ 1.1.1.1   │ true │"
19        "│─────────┼───────────┼──────│"
20        "│ Arch    │ 127.1.1.1 │ true │"
21        "│─────────┼───────────┼──────│"
22        "│ Manjaro │ Arch      │ true │"
23        "└─────────┴───────────┴──────┘"
24    );
25}
26
27struct Writer<'a> {
28    buf: &'a mut [u8],
29    cursor: usize,
30}
31
32impl<'a> Writer<'a> {
33    fn new(buf: &'a mut [u8]) -> Self {
34        Self { buf, cursor: 0 }
35    }
36
37    fn as_str(&self) -> &str {
38        core::str::from_utf8(&self.buf[0..self.cursor]).unwrap()
39    }
40}
41
42impl core::fmt::Write for Writer<'_> {
43    fn write_str(&mut self, s: &str) -> core::fmt::Result {
44        let cap = self.buf.len();
45
46        for (i, &b) in self.buf[self.cursor..cap]
47            .iter_mut()
48            .zip(s.as_bytes().iter())
49        {
50            *i = b;
51        }
52
53        self.cursor = usize::min(cap, self.cursor + s.len());
54
55        Ok(())
56    }
57}
no_std/no_std.rs

no_std/
no_std.rs
