commit fa1ab8cc861718c55b837cbe5acb354f2c71cfcb
Author: Annwan <annwan@annwan.me>
Date:   Fri Dec 1 22:23:47 2023 +0100

    Day 1

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..6436383
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+input/
diff --git a/day1.moon b/day1.moon
new file mode 100644
index 0000000..37a56ce
--- /dev/null
+++ b/day1.moon
@@ -0,0 +1,34 @@
+import aoc from require"utils"
+rex = require "rex_pcre2"
+
+aoc 1, 1, =>
+    sum = 0
+    for k in @gmatch "(%w+)"
+        digits = {}
+        for i = 1, #k
+            if string.match (k\sub i, i), "%d"
+                digits[#digits + 1] = k\sub i, i
+        sum += tonumber (digits[1] .. digits[#digits])
+    sum
+
+aoc 1, 2, =>
+    regex = "([0-9]|on(?=e)|tw(?=o)|thre(?=e)|four|fiv(?=e)|six|seve(?=n)|eigh(?=t)|nin(?=e)).*?"
+    rewrite = {
+        on: "1",
+        tw: "2",
+        thre: "3",
+        four: "4",
+        fiv: "5",
+        six: "6",
+        seve: "7",
+        eigh: "8",
+        nin: "9"
+    }
+    sum = 0
+    for k in @gmatch "(%w+)"
+        digits = {}
+        for d in rex.gmatch k, regex
+            digits[#digits + 1] = rewrite[d] or d
+        sum += tonumber (digits[1] .. digits[#digits])
+    sum
+
diff --git a/utils.moon b/utils.moon
new file mode 100644
index 0000000..6bf5dba
--- /dev/null
+++ b/utils.moon
@@ -0,0 +1,10 @@
+import p from require "moon"
+aoc = (day, problem, fun) ->
+    with io.open "input/#{day}.txt"
+        data = \read "*a"
+        print "============ #{day}.#{problem} ================"
+        out = fun data
+        print out
+        \close!
+
+{:aoc, :p}