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use std::fmt;
use std::time::Duration;
pub struct FormattedDuration(pub Duration);
pub struct HumanDuration(pub Duration);
pub struct HumanBytes(pub u64);
impl fmt::Display for FormattedDuration {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let mut t = self.0.as_secs();
let seconds = t % 60;
t /= 60;
let minutes = t % 60;
t /= 60;
let hours = t % 24;
t /= 24;
if t > 0 {
let days = t;
write!(f, "{}d {:02}:{:02}:{:02}", days, hours, minutes, seconds)
} else {
write!(f, "{:02}:{:02}:{:02}", hours, minutes, seconds)
}
}
}
impl fmt::Display for HumanDuration {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let t = self.0.as_secs();
let alt = f.alternate();
macro_rules! try_unit {
($secs:expr, $sg:expr, $pl:expr, $s:expr) => {
let cnt = t / $secs;
if cnt == 1 {
if alt {
return write!(f, "{}{}", cnt, $s);
} else {
return write!(f, "{} {}", cnt, $sg);
}
} else if cnt > 1 {
if alt {
return write!(f, "{}{}", cnt, $s);
} else {
return write!(f, "{} {}", cnt, $pl);
}
}
}
}
try_unit!(365 * 24 * 60 * 60, "year", "years", "y");
try_unit!(7 * 24 * 60 * 60, "week", "weeks", "w");
try_unit!(24 * 60 * 60, "day", "days", "d");
try_unit!(60 * 60, "hour", "hours", "h");
try_unit!(60, "minute", "minutes", "m");
try_unit!(1, "second", "seconds", "s");
write!(f, "0{}", if alt { "s" } else { " seconds" })
}
}
impl fmt::Display for HumanBytes {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let n = self.0 as f64;
let kb = 1024f64;
match n {
n if n >= kb.powf(4_f64) => write!(f, "{:.*}TB", 2, n / kb.powf(4_f64)),
n if n >= kb.powf(3_f64) => write!(f, "{:.*}GB", 2, n / kb.powf(3_f64)),
n if n >= kb.powf(2_f64) => write!(f, "{:.*}MB", 2, n / kb.powf(2_f64)),
n if n >= kb => write!(f, "{:.*}KB", 2, n / kb),
_ => write!(f, "{:.*}B", 0, n)
}
}
}