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use pbr;
use atty;
use colored::Colorize;
use std::fmt::Display;
use std::io::prelude::*;
use std::io::{self, Stdout};
use time::{self, SteadyTime, Duration};
macro_rules! printfl {
($w:expr, $($tt:tt)*) => {{
$w.write(&format!($($tt)*).as_bytes()).ok().expect("write() fail");
$w.flush().ok().expect("flush() fail");
}}
}
pub struct ProgressBar {
pb: pbr::ProgressBar<Stdout>,
current: u64,
last_refresh_time: SteadyTime,
max_refresh_rate: Option<time::Duration>,
atty: bool,
}
impl ProgressBar {
#[inline]
pub fn new(total: u64) -> ProgressBar {
let mut pb = pbr::ProgressBar::new(total);
pb.format("(=> )");
let now = SteadyTime::now();
let refresh_rate = Duration::milliseconds(250);
let atty = atty::is(atty::Stream::Stdout);
ProgressBar {
pb,
current: 0,
last_refresh_time: now - refresh_rate,
max_refresh_rate: Some(refresh_rate),
atty,
}
}
#[inline]
pub fn draw(&mut self) {
if !self.atty {
return;
}
self.pb.tick()
}
#[inline]
pub fn print_help(&mut self) {
self.writeln(format!("{} {}", "[+]".bold(),
"[h] help, [p] pause, [r] resume, [+] increase threads, [-] decrease threads".dimmed()));
}
#[inline]
pub fn writeln<T: Display>(&mut self, s: T) {
printfl!(io::stderr(), "\r\x1B[2K{}\n", s);
self.draw()
}
#[inline]
pub fn tick(&mut self) {
let now = SteadyTime::now();
if let Some(mrr) = self.max_refresh_rate {
if now - self.last_refresh_time < mrr {
return;
}
}
self.draw();
self.last_refresh_time = SteadyTime::now();
}
#[inline]
pub fn inc(&mut self) {
if !self.atty {
return;
}
let now = SteadyTime::now();
if let Some(mrr) = self.max_refresh_rate {
if now - self.last_refresh_time < mrr {
self.current += 1;
return;
}
}
self.pb.set(self.current);
self.last_refresh_time = SteadyTime::now();
}
#[inline]
pub fn finish_replace<T: Display>(&self, s: T) {
if self.atty {
print!("\r\x1B[2K{}", s);
} else {
print!("{}", s);
}
}
}