Struct uu_tail::chunks::LinesChunkBuffer

pub struct LinesChunkBuffer { /* private fields */ }

An abstraction layer on top of LinesChunk mainly to simplify filling only the needed amount of chunks. See also Self::fill. Works similar like BytesChunkBuffer, but works on top of lines delimited by self.delimiter instead of bytes.

Implementations

impl LinesChunkBuffer

pub fn new(delimiter: u8, num_print: u64) -> Self

Create a new LinesChunkBuffer

pub fn fill(&mut self, reader: &mut impl BufRead) -> UResult<()>

Fills this buffer with chunks and consumes the reader completely. This method ensures that there are exactly as many chunks as needed to match self.num_print lines, so there are in sum exactly self.num_print lines stored in all chunks. The method returns an iterator over these chunks. If there are no chunks, for example because the piped stdin contained no lines, or num_print = 0 then iterator.next will return None.

pub fn print(&self, writer: impl Write) -> UResult<()>