4 releases
new 0.1.4 | Apr 26, 2024 |
---|---|
0.1.3 | Mar 31, 2024 |
0.1.2 | Mar 26, 2024 |
0.1.1 | Jan 27, 2024 |
0.1.0 |
|
#5 in #multi
258 downloads per month
11KB
170 lines
Wrapper for multiple readers
MultiReader
is lazy. It does nothing if you don't use.
Usage
SliceReader
andBytesReader
use multi_readers::{BytesReader, SliceReader, join_readers};
use std::io::Read;
fn main() -> std::io::Result<()> {
let slice = SliceReader::new(b"hello");
let bytes = BytesReader::new("world".as_bytes().to_vec());
let mut reader = join_readers!(slice, bytes);
let mut buf = [0; 5];
let len = reader.read(&mut buf)?;
assert_eq!(b"hello", &buf[..len]);
let len = reader.read(&mut buf)?;
assert_eq!(b"world", &buf[..len]);
Ok(())
}
Usage
- Merge any type that implements the trait
std::io::Read
use multi_readers::{BytesReader, SliceReader, join_readers};
use std::{fs::File, io::Read};
fn main() -> std::io::Result<()> {
let slice = SliceReader::new(b"First-");
let bytes = BytesReader::new(b"Second-".to_vec());
std::fs::write("test.txt", b"Third")?;
let f = File::open("test.txt")?;
let mut reader = join_readers!(slice, bytes, f);
let mut buf = String::new();
reader.read_to_string(&mut buf)?;
assert_eq!(buf.as_str(), "First-Second-Third");
Ok(())
}