Struct ConsoleBuffer

pub struct ConsoleBuffer { /* private fields */ }

Emulate a bounded line-based buffer for console display.

A new line will scroll up the existing lines, making old lines disappear at the top of the console when the maximum number of lines is reached. Lines could be retrieved either by their current row number (position relative to the top of the console), or permanent line id (an id assigned to each added line, which stays unchanged when the text scrolls up).

Implementations

impl ConsoleBuffer

pub fn new(max_lines: usize) -> Self

pub fn feed(&mut self, input: &str) -> usize

Add text to the buffer.

The input does not have to be a complete line, and the buffer will automatically detect the new line characters (‘\n’) for new lines.

pub fn get_buffer( &self, row_limits: Option<Range<isize>>, id_limits: Option<Range<usize>>, ) -> (usize, usize, String)

Return the selected lines as a combined string.

The first two returned integers are the line id of the first selected line and the number of lines selected.