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// Take a look at the license at the top of the repository in the LICENSE file.
const ARRAY_DEFAULT: u8 = 0;
#[derive(Debug)]
pub struct Buffer {
buffer: Vec<u8>,
read_pos: usize,
buffer_size: usize,
data_size: usize,
}
impl Buffer {
pub fn new(size: usize) -> Buffer {
Buffer {
buffer: vec![ARRAY_DEFAULT; size],
read_pos: 0,
buffer_size: size,
data_size: 0,
}
}
pub fn as_mut(&mut self) -> &mut [u8] {
self.buffer.as_mut()
}
pub fn update_metadata(&mut self, size: usize) {
self.read_pos = 0;
self.data_size = size;
}
pub fn next(&mut self) -> Option<u8> {
if self.read_pos >= self.data_size {
return None;
}
let item = self.buffer.get(self.read_pos);
self.read_pos += 1;
item.copied()
}
pub fn cont(&self) -> bool {
self.data_size == self.buffer_size
}
}
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