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use ansi_term::Color;
use super::{Context, Module};
/// Outputs the time it took the last command to execute
///
/// Will only print if last command took more than a certain amount of time to
/// execute. Default is two seconds, but can be set by config option `min_time`.
pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
let mut module = context.new_module("cmd_duration");
let arguments = &context.arguments;
let elapsed = arguments
.value_of("cmd_duration")
.unwrap_or("invalid_time")
.parse::<u64>()
.ok()?;
let signed_config_min = module.config_value_i64("min_time").unwrap_or(2);
/* TODO: Once error handling is implemented, warn the user if their config
min time is nonsensical */
if signed_config_min < 0 {
log::debug!(
"[WARN]: min_time in [cmd_duration] ({}) was less than zero",
signed_config_min
);
return None;
}
let config_min = signed_config_min as u64;
let module_color = match elapsed {
time if time < config_min => return None,
_ => module
.config_value_style("style")
.unwrap_or_else(|| Color::Yellow.bold()),
};
module.set_style(module_color);
module.new_segment("cmd_duration", &format!("took {}", render_time(elapsed)));
module.get_prefix().set_value("");
Some(module)
}
// Render the time into a nice human-readable string
fn render_time(raw_seconds: u64) -> String {
// Calculate a simple breakdown into days/hours/minutes/seconds
let (seconds, raw_minutes) = (raw_seconds % 60, raw_seconds / 60);
let (minutes, raw_hours) = (raw_minutes % 60, raw_minutes / 60);
let (hours, days) = (raw_hours % 24, raw_hours / 24);
let components = [days, hours, minutes, seconds];
let suffixes = ["d", "h", "m", "s"];
let rendered_components: Vec<String> = components
.iter()
.zip(&suffixes)
.map(render_time_component)
.collect();
rendered_components.join("")
}
/// Render a single component of the time string, giving an empty string if component is zero
fn render_time_component((component, suffix): (&u64, &&str)) -> String {
match component {
0 => String::new(),
n => format!("{}{}", n, suffix),
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_10s() {
assert_eq!(render_time(10 as u64), "10s")
}
#[test]
fn test_90s() {
assert_eq!(render_time(90 as u64), "1m30s")
}
#[test]
fn test_10110s() {
assert_eq!(render_time(10110 as u64), "2h48m30s")
}
#[test]
fn test_1d() {
assert_eq!(render_time(86400 as u64), "1d")
}
}
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