adventofcode

day1_part2.ha (2434B)

// SPDX-FileCopyrightText: 2023 Haelwenn (lanodan) Monnier <contact+aoc2023@hacktivis.me>
// SPDX-License-Identifier: MIT
// This is broken code, the hare regex library is currently (2023-12-02) incomplete
// I solved day1_part2 with day1_part2.pl instead
use bufio;
use strings;
use fmt;
use os;
use io;
use regex;
use strconv;
fn stoi(line: str) int = {
	const line = strings::multireplace(line,
		("one", "1"),
		("two", "2"),
		("three", "3"),
		("four", "4"),
		("five", "5"),
		("six", "6"),
		("seven", "7"),
		("eight", "8"),
		("nine", "9"),
	);
	return strconv::stoi(line)!;
};
export fn main() void = {
	let total = 0u32;
	const fre = regex::compile(`^([0-9]|one|two|three|four|five|six|seven|six|seven|eight|nine)`)!;
	const lre = regex::compile( `([0-9]|one|two|three|four|five|six|seven|six|seven|eight|nine)$`)!;
	defer regex::finish(&fre);
	defer regex::finish(&lre);
	fmt::printfln("Regexes compiled")!;
	for(true) {
		const line = match(bufio::read_line(os::stdin)) {
		case let l: []u8 => yield l;
		case io::EOF => break;
		case => abort();
		};
		let line = strings::fromutf8(line)!;
		fmt::printf("{} ", line)!;
		// Try1: Invalid, need to only replace first spelled number and last one, not all
		//const line = strings::multireplace(line,
		//	("one", "1"),
		//	("two", "2"),
		//	("three", "3"),
		//	("four", "4"),
		//	("five", "5"),
		//	("six", "6"),
		//	("seven", "7"),
		//	("eight", "8"),
		//	("nine", "9"),
		//);
		// Try2: Definitely invalid "eightwothree" needs to be 8wo3
		//line = strings::replace(line, "one", "1");
		//line = strings::replace(line, "two", "2");
		//line = strings::replace(line, "three", "3");
		//line = strings::replace(line, "four", "4");
		//line = strings::replace(line, "five", "5");
		//line = strings::replace(line, "six", "6");
		//line = strings::replace(line, "seven", "7");
		//line = strings::replace(line, "eight", "8");
		//line = strings::replace(line, "nine", "9");
		//fmt::printf("→ {} ", line)!;
		let fre_r = regex::find(&fre, line);
		let lre_r = regex::find(&lre, line);
		defer regex::result_free(fre_r);
		defer regex::result_free(lre_r);
		fmt::printfln("Results!")!;
		assert(len(fre_r) > 0);
		assert(len(lre_r) > 0);
		const first = stoi(fre_r[0].content);
		const last = stoi(lre_r[0].content);
		const val = (first*10)+last;
		fmt::printfln("= {}", val)!;
		total += val: u32;
	};
	fmt::printfln("Total: {}", total)!;
};