70 lines
2.8 KiB
Rust
70 lines
2.8 KiB
Rust
use std::env;
|
|
use std::fs;
|
|
use std::io::{self, BufReader, BufRead};
|
|
//use regex::Regex;
|
|
use chrono::{Duration, DateTime, FixedOffset, NaiveDateTime, TimeZone, Utc};
|
|
use chrono_tz::Tz;
|
|
|
|
fn main() {
|
|
// Regexes
|
|
//let sep = Regex::new(r":").unwrap();
|
|
|
|
// read file argument or stdin
|
|
let input = env::args().nth(1);
|
|
let reader: Box<dyn BufRead> = match input {
|
|
None => Box::new(BufReader::new(io::stdin())),
|
|
Some(filename) => Box::new(BufReader::new(fs::File::open(filename).unwrap()))
|
|
};
|
|
|
|
// set vacuous values for old and new timestamps, so we can detect the first and second lines
|
|
// of input
|
|
let mut old: DateTime<FixedOffset> = DateTime::from(DateTime::<Utc>::MIN_UTC);
|
|
let mut new: DateTime<FixedOffset> = DateTime::from(DateTime::<Utc>::MIN_UTC);
|
|
|
|
for line in reader.lines() {
|
|
let l: String = line.unwrap();
|
|
let (tag, timestamp) = l.split_once(':').unwrap();
|
|
// Timezone mapping
|
|
let ts: Vec<&str> = timestamp.split_whitespace().collect();
|
|
let timezone = ts[4];
|
|
let tz: Tz = match timezone {
|
|
"EDT" => "America/New_York".parse().unwrap(),
|
|
"EST" => "America/New_York".parse().unwrap(),
|
|
"CDT" => "America/Chicago".parse().unwrap(),
|
|
"CST" => "America/Chicago".parse().unwrap(),
|
|
"MDT" => "America/Denver".parse().unwrap(),
|
|
"MST" => "America/Denver".parse().unwrap(),
|
|
"PDT" => "America/Los_Angeles".parse().unwrap(),
|
|
"PST" => "America/Los_Angeles".parse().unwrap(),
|
|
"UTC" => "UTC".parse().unwrap(),
|
|
"GMT" => "GMT".parse().unwrap(),
|
|
other => panic!("Timezone '{}' unknown!", other)
|
|
};
|
|
|
|
let ndt = NaiveDateTime::parse_from_str(×tamp, "%a %b %e %H:%M:%S %Z %Y").unwrap();
|
|
let dt = tz.from_local_datetime(&ndt).unwrap();
|
|
let to: DateTime<FixedOffset> = DateTime::parse_from_rfc3339(&dt.to_rfc3339()).unwrap();
|
|
if old == DateTime::<Utc>::MIN_UTC { // detect first line
|
|
old = to;
|
|
continue;
|
|
} else if new == DateTime::<Utc>::MIN_UTC { // detect second line
|
|
new = to;
|
|
} else { // subsequent lines
|
|
old = new;
|
|
new = to;
|
|
};
|
|
|
|
let dur: Duration = new - old;
|
|
|
|
let weeks = dur.num_weeks();
|
|
let days = dur.num_days() - weeks * 7;
|
|
let hours = dur.num_hours() - weeks * 7 * 24 - days * 24;
|
|
let minutes = dur.num_minutes() - weeks * 7 * 24 * 60 - days * 24 * 60 - hours * 60;
|
|
let seconds = dur.num_seconds() - weeks * 7 * 24 * 60 * 60
|
|
- days * 24 * 60 * 60 - hours * 60 * 60 - minutes * 60;
|
|
|
|
println!("{}: {} weeks, {} days, {} hours, {} minutes, {} seconds",
|
|
tag, weeks, days, hours, minutes, seconds);
|
|
};
|
|
}
|