Trait genio::bufio::BufReadProgress

pub trait BufReadProgress: Read {
    type BufReadError;
    fn fill_progress(
        &mut self
    ) -> Result<&[u8], BufError<Self::BufReadError, Self::ReadError>>;
    fn require_bytes(
        &mut self, 
        amount: usize
    ) -> Result<&[u8], BufError<Self::BufReadError, Self::ReadError>>;
}

When reading from reader, sometimes it's beneficial to read n bytes at once. However, BufRead itself doesn't guarantee that more bytes will be available when calling fill_buf multiple times. This trait provides fill_progress and require_bytes functions with that guarantee.

Associated Types

type BufReadError

Error that occurs in buffer itself. Most often if buffer is out of memory.

Required Methods

fn fill_progress(
    &mut self
) -> Result<&[u8], BufError<Self::BufReadError, Self::ReadError>>

Fills the internal buffer guaranteeing that successive calls to this function return more and more bytes (or an error).

fn require_bytes(
    &mut self,
    amount: usize
) -> Result<&[u8], BufError<Self::BufReadError, Self::ReadError>>

Fill the buffer until at least amount bytes are available.

Implementors