flo_pv/
read.rs

1use crate::CHUNK_SIZE;
2use crossbeam::channel::Sender;
3use std::{
4    fs::File,
5    io::{self, BufReader, Read, Result},
6};
7
8pub fn read_loop(infile: &str, stats_tx: Sender<usize>, write_tx: Sender<Vec<u8>>) -> Result<()> {
9    let mut reader: Box<dyn Read> = if !infile.is_empty() {
10        Box::new(BufReader::new(File::open(infile)?))
11    } else {
12        Box::new(BufReader::new(io::stdin()))
13    };
14
15    let mut buffer = [0; CHUNK_SIZE];
16    loop {
17        let num_read = match reader.read(&mut buffer) {
18            Ok(0) => break,
19            Ok(x) => x,
20            Err(_) => break,
21        };
22        let _ = stats_tx.send(num_read);
23        if write_tx.send(Vec::from(&buffer[..num_read])).is_err() {
24            break;
25        }
26    }
27
28    let _ = stats_tx.send(0);
29    let _ = write_tx.send(Vec::new());
30
31    Ok(())
32}
flo_pv/read.rs

flo_pv/
read.rs
