162 lines
6.3 KiB
Rust
162 lines
6.3 KiB
Rust
use std::env;
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use std::fs;
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use std::io::{BufReader, BufRead, ErrorKind};
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use std::collections::HashMap;
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use regex::Regex;
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use chrono::{Datelike, Duration, offset::Local, NaiveDate, NaiveDateTime, Weekday};
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use itertools::Itertools;
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fn main() {
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// Regular Expressions
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let empty = Regex::new(r"^\s*$").unwrap(); // regex for finding empty lines (and skipping them)
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let comment = Regex::new(r"^\s*#").unwrap(); // regex for finding empty lines (and skipping them)
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let delim = Regex::new(r":\s{2}").unwrap(); // regex for splitting timestamp entry
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let begin = Regex::new(r"Begin\s+(?P<action>.*)\s*$").unwrap();
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let end = Regex::new(r"End\s+(?P<action>.*)\s*$").unwrap();
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let offset = Regex::new(r"^[+-]*\d+").unwrap();
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// Process options
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let params: Vec<String> = env::args().collect();
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// If week offset is provided, grab it
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let mut week_offset: i64 = 0;
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for arg in ¶ms {
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if offset.is_match(&arg.to_string()) {
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week_offset = arg.parse::<i64>().unwrap();
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};
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};
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let day: NaiveDate = last_monday(week_offset);
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let mut filenames: Vec<String> = Vec::new();
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for d in 0..7 {
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filenames.push((day + Duration::days(d)).format("%Y-%m-%d.log").to_string());
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};
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assert_eq!(filenames.len(), 7);
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let mut grand_total: f64 = 0.0;
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for filename in filenames {
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println!("{} ", filename);
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let mut gtoth: f64 = 0.0;
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// Process the file
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match fs::File::open(filename) {
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Ok(file) => {
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// Hash Maps (akin to Python Dictionaires)
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let mut start: HashMap<String, Vec<i64>> = HashMap::new();
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let mut finish: HashMap<String, Vec<i64>> = HashMap::new();
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let reader = BufReader::new(file);
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// For each line of input (build internal data structures)
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for line in reader.lines() {
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// need to get the string out of line (which is an option enum)
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let l: String = line.unwrap();
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// if the line is empty or is a comment
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if empty.is_match(&l) || comment.is_match(&l) {
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continue
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};
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// Parse the timestamp and entry
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let splits: Vec<_> = delim.split(&l.trim_end()).into_iter().collect();
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// splits should only ever have two elements (only one delimiter per log line)
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let datetime = splits[0];
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let entry = splits[1];
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let date_time = NaiveDateTime::parse_from_str(datetime,"%Y-%m-%d %H:%M:%S").unwrap();
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let timestamp = date_time.timestamp();
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// Process a Begin
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if begin.is_match(&entry) {
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let caps = begin.captures(&entry).unwrap();
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let action = caps.name("action").unwrap().as_str();
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start.entry(action.to_string()).or_insert(Vec::new()).push(timestamp);
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};
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// Process an End
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if end.is_match(&entry) {
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let caps = end.captures(&entry).unwrap();
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let action = caps.name("action").unwrap().as_str();
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finish.entry(action.to_string()).or_insert(Vec::new()).push(timestamp);
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};
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}; // end for
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for (act, tstamps) in start.iter_mut().sorted_by_key(|x| x.0) {
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let bc: i64 = tstamps.len().try_into().unwrap();
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let ec: i64 = finish.get_mut(&act.to_string())
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.expect("Somehow, not a vector!")
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.len()
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.try_into()
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.unwrap();
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// Debugging
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// println!("bc: {}, ec: {}", bc, ec);
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// This block ensures the lengths of start and finish for this action are equal
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if bc - ec > 1 {
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panic!("ERROR: Missing more than one End"); // need to fix log file
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} else if bc > ec { // bc should be exactly one greater
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tstamps.pop();
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} else if ec > bc {
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panic!("ERROR: Missing a Begin"); // need to fix log file
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};
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// Debugging
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//for t in tstamps.into_iter() {
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// print!("{} ", t);
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//};
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//println!();
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//for t in finish.get_mut(&act.to_string()).expect("Somehow, not a vector!").into_iter() {
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// print!("{} ", t);
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//};
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//println!();
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let mut delta: i64 = 0;
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for i in 0..tstamps.len() {
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let beg = tstamps[i];
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let en = finish.get_mut(&act.to_string()).unwrap()[i];
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delta += en - beg;
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};
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let d: f64 = nearest(delta as f64 / 3600.00);
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if d == 0.0 {
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gtoth += 0.08;
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} else {
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gtoth += d;
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};
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};
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},
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Err(error) => match error.kind() {
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ErrorKind::NotFound => (),
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_ => panic!("Error reading file! Error: {}", error)
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}
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};
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if gtoth > 24.0 {
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gtoth = 24.0;
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};
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// print the output
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println!("{}", format!("{:.2}", gtoth));
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println!();
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grand_total += gtoth;
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};
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println!("Grand total: {:.2}", grand_total);
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}
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fn nearest(hr: f64) -> f64 {
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let t = hr * 4.0;
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t.round() / 4.0
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}
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fn last_monday(offset: i64) -> NaiveDate {
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let day: NaiveDate = Local::today().naive_local() - Duration::days(7 * offset);
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match day.weekday() {
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Weekday::Mon => day - Duration::days(0),
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Weekday::Tue => day - Duration::days(1),
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Weekday::Wed => day - Duration::days(2),
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Weekday::Thu => day - Duration::days(3),
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Weekday::Fri => day - Duration::days(4),
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Weekday::Sat => day - Duration::days(5),
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Weekday::Sun => day - Duration::days(6)
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}
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}
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