adventofcode

commit: 1ce0691d9be2aa63f7f00e6d208a2c8f89a84df8
parent e593dc4652ff9b3af2fe4515676d7850ea9f39cd
Author: Haelwenn (lanodan) Monnier <contact@hacktivis.me>
Date:   Sat,  2 Dec 2023 14:17:56 +0100

day1_part2.ha: New, for curiosity

Diffstat:
A
day1_part2.ha
97
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

1 file changed, 97 insertions(+), 0 deletions(-)
diff --git a/day1_part2.ha b/day1_part2.ha
@@ -0,0 +1,97 @@
+// 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)!;
+};