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64 lines
1.2 KiB
64 lines
1.2 KiB
#![feature(str_split_once)]
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#![feature(min_const_generics)]
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use std::{
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fs,
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io::{
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self,
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BufReader,
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BufRead,
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},
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convert::TryFrom,
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};
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#[cfg(not(feature="test"))] const INPUT: &str = "input";
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#[cfg(feature="test")] const INPUT: &str = "input-test";
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mod error;
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mod passport;
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fn parse_single(from: &mut (impl BufRead + ?Sized)) -> Result<String, io::Error>
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{
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let mut string = String::new();
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loop {
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let n = string.len();
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let r = from.read_line(&mut string)?;
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let nw = &string[n..(n+r)];
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if nw.trim().len()==0 {
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break;
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}
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}
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Ok(string)
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}
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fn main() -> Result<(), Box<dyn std::error::Error>> {
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let mut input = BufReader::new(fs::OpenOptions::new()
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.read(true)
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.open(INPUT)?);
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let mut valid = 0;
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loop {
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let line = parse_single(&mut input)?;
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if line.trim().len() > 0 {
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#[allow(unused_variables)]
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if let Ok(ppinf) = passport::PassportInfo::try_from(&line[..]) {
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#[cfg(not(feature="part2"))] { valid+=1; }
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#[cfg(feature="part2")] {
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match passport::Passport::try_from(ppinf) {
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Err(err) => {
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eprintln!("Error: {}", err);
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},
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Ok(_) => valid+=1,
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}
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}
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}
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} else {
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break;
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}
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}
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println!("{}", valid);
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Ok(())
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}
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