update: image compress support size units

image_compress.sh

@@ -2,13 +2,38 @@
 
 input="$1"
 output="$2"
-target_size=$3
+target_size_raw="$3"
 
-if [[ -z "$input" || -z "$output" || -z "$target_size" ]]; then
-    echo "Usage: $0 input output.jpg <target size in bytes>"
+if [[ -z "$input" || -z "$output" || -z "$target_size_raw" ]]; then
+    echo "Usage: $0 input output.jpg <target size>"
     exit 1
 fi
 
+parse_size() {
+    local size="$1"
+
+    size=$(echo "$size" | tr '[:lower:]' '[:upper:]' | tr -d ' ')
+
+    if [[ "$size" =~ ^([0-9]+(\.[0-9]+)?)(B|KB|MB)?$ ]]; then
+        value="${BASH_REMATCH[1]}"
+        unit="${BASH_REMATCH[3]}"
+
+        case "$unit" in
+            ""|"B") multiplier=1 ;;
+            "KB") multiplier=1024 ;;
+            "MB") multiplier=$((1024 * 1024)) ;;
+            *) echo "Invalid size unit: $unit"; exit 1 ;;
+        esac
+
+        awk "BEGIN {printf \"%d\", $value * $multiplier}"
+    else
+        echo "Invalid size format: $size"
+        exit 1
+    fi
+}
+
+target_size=$(parse_size "$target_size_raw")
+
 compress_and_get_size() {
     local q=$1
     magick "$work" -strip -interlace Plane -quality "$q" "$output"