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use crate::*;
/// A wrapped cmd_output, only valid for the cmd_output it was computed for,
/// contains references to the start and end of lines wrapped for a
/// given width
pub struct WrappedCommandOutput {
pub sub_lines: Vec<SubLine>,
/// in order to allow partial wrapping, and assuming the wrapped part
/// didn't change, we store the count of lines which were wrapped so
/// that we may update starting from there
pub wrapped_lines_count: usize,
}
impl WrappedCommandOutput {
/// compute a new wrapped cmd_output for a width and cmd_output.
///
/// width is the total area width, including the scrollbar.
pub fn new(
cmd_output: &CommandOutput,
width: u16,
) -> Self {
debug!("wrapping cmd_output");
let sub_lines = wrap(&cmd_output.lines, width);
Self {
sub_lines,
wrapped_lines_count: cmd_output.len(),
}
}
/// Assuming the width is the same and the lines already handled
/// didn't change, wrap and add the lines which weren't.
pub fn update(
&mut self,
cmd_output: &CommandOutput,
width: u16,
) {
debug!("updating cmd_output");
let mut new_lines = wrap(&cmd_output.lines[self.wrapped_lines_count..], width);
for mut line in new_lines.drain(..) {
line.line_idx += self.wrapped_lines_count;
self.sub_lines.push(line);
}
self.wrapped_lines_count = cmd_output.lines.len();
}
}