extern crate buffer;
use buffer::ReadBuffer;
use std::env;
use std::fs::File;
use std::io::Write;
fn main() {
let filename = env::temp_dir().join("rust_buffer_test.txt");
{
let mut f = File::create(&filename).unwrap();
f.write(&[1; 256]).unwrap();
}
{
let mut contents = Vec::with_capacity(1);
let mut f = File::open(&filename).unwrap();
loop {
let len = f.read_buffer(&mut contents).unwrap().len();
println!("{:3} {:3}/{:3}", len, contents.len(), contents.capacity());
if len == 0 {
break;
}
if contents.len() == contents.capacity() {
let len = contents.len();
contents.reserve(len);
}
}
}
}