52 lines
1.2 KiB
Rust
52 lines
1.2 KiB
Rust
use std::io;
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pub struct Buffer {
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has_changed: bool,
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buffer: Vec<Result<String, io::Error>>,
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current_line: usize,
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}
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impl Buffer {
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pub fn new(buffer: Vec<Result<String, io::Error>>) -> Self {
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let tmp = buffer.len().saturating_sub(1);
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Self {
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has_changed: false,
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buffer,
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current_line: tmp
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}
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}
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// Return the actual line of the buffer
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pub fn act(&self) -> usize {
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self.current_line
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}
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// change la ligne actuelle
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pub fn change_act(&mut self, new: usize) {
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// TODO check si > len
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self.current_line = new;
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}
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// affiche une ligne
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pub fn print_line(&self, nb: usize, print_numbers: bool) {
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if nb >= self.buffer.len() {
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println!("?");
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} else if let Ok(line) = &self.buffer[nb] {
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if print_numbers {
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println!("{}\t{}", nb + 1, line);
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} else {
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println!("{}", line);
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}
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} else {
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println!("?");
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}
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}
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// affiche plusieurs lignes
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pub fn print_range(&self, first: usize, last: usize, print_numbers: bool) {
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for i in first..last {
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self.print_line(i, print_numbers);
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}
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}
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}
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