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209 lines
3.9 KiB
209 lines
3.9 KiB
use super::*;
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use std::{
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fmt::Write,
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};
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#[derive(Debug)]
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pub struct Bar
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{
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width: usize,
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max_width: usize,
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progress: f64,
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buffer: String,
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title: String,
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}
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/*
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#[cfg(test)]
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mod tests
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{
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#[test]
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fn display()
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{
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let mut bar = Bar::new(50);
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bar.set_title("hello world");
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bar.progress = 0.455456749849;
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bar.update();
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bar.refresh();
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bar.progress = 0.8;
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bar.update();
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bar.refresh();
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bar.progress = 0.88;
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bar.update();
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bar.refresh();
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bar.set_title("almost AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA");
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bar.progress = 0.99554;
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bar.update();
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bar.refresh();
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println!("\nuhh");
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panic!("h");
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}
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}*/
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impl Bar
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{
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/// Create a new bar `width` long with a title.
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pub fn with_title(width: usize, title: impl AsRef<str>) -> Self
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{
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let mut this = Self::new(width);
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this.set_title(title.as_ref());
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this
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}
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/// Create a new bar with max display width of our terminal
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pub fn new(width: usize) -> Self
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{
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if let Some((terminal_size::Width(tw), _)) = terminal_size::terminal_size() {
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let tw = usize::from(tw);
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Self::with_max(if width < tw {width} else {tw}, tw)
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} else {
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Self::with_max(width, width +20)
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}
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}
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/// Create a bar with a max display width
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///
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/// # Panics
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/// If `width` is larger than or equal to `max_width`.
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pub fn with_max(width: usize, max_width: usize) -> Self
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{
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Self {
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width,
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max_width,
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progress: 0.0,
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buffer: String::with_capacity(width),
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title: String::with_capacity(max_width - width),
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}
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}
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/// Fit to terminal's width if possible.
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pub fn fit(&mut self) -> bool
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{
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if let Some((terminal_size::Width(tw), _)) = terminal_size::terminal_size() {
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let tw = usize::from(tw);
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self.width = if self.width < tw {self.width} else {tw};
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self.update_dimensions(tw);
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return true;
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}
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false
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}
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/// Update the buffer.
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pub fn update(&mut self)
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{
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self.buffer.clear();
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let pct = (self.progress * (self.width as f64)) as usize;
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for i in 0..self.width
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{
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if i >= pct {
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write!(self.buffer, " ").unwrap();
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} else {
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write!(self.buffer, "=").unwrap();
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}
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}
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}
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/// Consume the bar and complete it, regardless of progress.
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pub fn complete(self)
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{
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println!("");
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}
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}
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fn ensure_eq(input: String, to: usize) -> String
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{
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let chars = input.chars();
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if chars.count() != to {
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let mut chars = input.chars();
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let mut output = String::with_capacity(to);
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for _ in 0..to
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{
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if let Some(c) = chars.next() {
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write!(output, "{}", c).unwrap();
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} else {
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write!(output, " ").unwrap();
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}
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}
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output
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} else {
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input
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}
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}
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fn ensure_lower(input: String, to: usize) -> String
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{
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let chars = input.chars();
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if chars.count() > to
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{
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let chars = input.chars();
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let mut output = String::with_capacity(to);
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for (i,c) in (0..).zip(chars)
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{
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write!(output, "{}", c).unwrap();
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if to>3 && i == to-3 {
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write!(output, "...").unwrap();
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break;
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} else if i==to {
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break;
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}
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}
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output
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} else {
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input
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}
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}
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impl Display for Bar
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{
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fn refresh(&self)
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{
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let temp = format!("[{}]: {:.2}%", self.buffer, self.progress * 100.00);
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let title = ensure_lower(format!(" {}", self.title), self.max_width - temp.chars().count());
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let temp = ensure_eq(format!("{}{}", temp, title), self.max_width);
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print!("\x1B[0m\x1B[K{}", temp);
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print!("\n\x1B[1A");
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}
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fn blank(&self)
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{
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print!("\r{}\r", " ".repeat(self.max_width));
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}
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fn get_title(&self) -> &str
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{
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&self.title
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}
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fn set_title(&mut self, from: &str)
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{
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self.title = from.to_string();
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}
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fn update_dimensions(&mut self, to: usize)
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{
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self.max_width = to;
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self.refresh();
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}
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}
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impl ProgressBar for Bar
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{
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fn get_progress(&self) -> f64
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{
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self.progress
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}
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fn set_progress(&mut self, value: f64)
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{
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if self.progress != value {
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self.progress = value;
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self.update();
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}
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self.refresh();
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}
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}
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