73 lines
1.8 KiB
Bash
73 lines
1.8 KiB
Bash
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#!/bin/bash
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set -euo pipefail
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year=2023
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root=~/adventofcode${year}
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getinput() {
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curl -fsS -b "$root/cookie" -O "https://adventofcode.com/$year/day/$1/input"
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}
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getsamples() {
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curl -fsS "https://adventofcode.com/$year/day/$1" |
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awk '/<pre><code>/ {sub("<pre><code>", ""); CODE=1; IDX+=1} /<\/code>/ {CODE=0} CODE {print > sprintf("sample%d.in", IDX)}'
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}
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if [[ "$*" = "auto" ]]; then
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# get the current day in UTC with and without zero padding.
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# UTC is a few hours ahead of US Eastern time, so
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# it should match the day of the current puzzle even
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# if the clocks on tilde.town and AoC aren't synced exactly
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day_unpadded=$(TZ=UTC date '+%-d')
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day_padded=$(TZ=UTC date '+%0d')
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dir=$root/day$day_padded
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elif (( $# == 1 || $# == 2 )); then
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day_unpadded=$(printf "%d" "$1")
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day_padded=$(printf "%02d" "$1")
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dir=${2:-}
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else
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echo >&2 "usage: $0 day [out_dir]"
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echo >&2 " $0 auto"
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exit 0
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fi
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if [[ -z "$dir" ]]; then
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dir=$root/day$day_padded
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fi
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if test -e "$dir"; then
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echo >&2 "'$dir' already exists! refusing to continue"
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exit 1
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fi
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cwd=${PWD:-`pwd`}
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mkdir "$dir"
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cd "$dir" || exit 1
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error=0
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if ! getinput "$day_unpadded"; then
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echo >&2 "error: failed to get input for day $day_unpadded"
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error=1
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fi
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if ! getsamples "$day_unpadded"; then
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echo >&2 "error: failed to get sample inputs for day $day_unpadded"
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error=1
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fi
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if [[ $error -ne 0 ]]; then
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# we might not have managed to grab any files
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# at all. try to clean up after ourselves by removing
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# the directory (if it's empty)
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if cd "$cwd" && rmdir --ignore-fail-on-non-empty "$dir" >&2; then
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if ! test -d "$dir"; then
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echo "cleaning up '$dir'"
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else
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echo "not cleaning up '$dir'"
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fi
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fi
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fi
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exit $error
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