blob: b90097c17709a24f7547937fc70599f5ca83f740 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
|
use std::io::{self, prelude::*};
pub struct BufReader<R> {
reader: io::BufReader<R>,
}
impl<R: Read> BufReader<R> {
pub fn new(f: R) -> Self {
Self { reader: io::BufReader::new(f) }
}
pub fn read_line<'buf>(
&mut self,
buffer: &'buf mut String,
) -> Option<io::Result<&'buf mut String>> {
buffer.clear();
self.reader
.read_line(buffer)
.map(|u| if u == 0 { None } else { Some(buffer) })
.transpose()
}
}
|