1 files changed, 57 insertions, 0 deletions
diff --git a/aoc-cacheclear b/aoc-cacheclear
new file mode 100755
index 0000000..3ce865b
--- /dev/null
+++ b/aoc-cacheclear
@@ -0,0 +1,57 @@
+#!/bin/bash
+set -euo pipefail
+
+AOC_DIR="${AOC_DIR:-$HOME/.aoc}"
+CACHE_DIR="$AOC_DIR/cache"
+
+usage() {
+    pname=$(basename "$0")
+    echo "Usage: $pname <year> <day?>" >&2
+    echo "       $pname all"
+    exit 1
+}
+
+verify_int() {
+    if ! [[ "$1" =~ ^[0-9]+$ ]]; then
+        echo "'$1' is not an integer" >&2
+        usage
+    fi
+}
+
+if [ $# -gt 2 ] || [ $# -lt 1 ]; then
+    usage
+fi
+
+if [ "$1" = all ]; then
+    if [ ! -d "$CACHE_DIR" ]; then
+        echo "No cache present" >&2
+        exit 1
+    fi
+    echo "Clearing full cache" >&2
+    rm -rf "$CACHE_DIR"
+    exit
+fi
+
+year="$1"
+verify_int "$year"
+year_cache_dir="$CACHE_DIR/$year"
+
+if [ $# -eq 1 ]; then
+    if [ ! -d "$year_cache_dir" ]; then
+        echo "No cache for $year present" >&2
+        exit 1
+    fi
+    echo "Clearing cache for year $year" >&2
+    rm -rf "$year_cache_dir"
+    exit
+fi
+
+day="$2"
+verify_int "$day"
+cache_file=$year_cache_dir/d$day.in
+if [ ! -f "$cache_file" ]; then
+    echo "No cache for $year day $day present"
+    exit 1
+fi
+echo "Clearing cache for $year day $day" >&2
+rm $cache_file