feat: ADD EXIF striping #3

build.sh

@@ -10,6 +10,29 @@ OUTPUT_DIR="output"
 TEMPLATES_DIR="templates"
 ASSETS_DIR="assets"
 
+# Image metadata (EXIF/GPS/IPTC/XMP) is stripped by default.
+# Opt out with STRIP_EXIF=0 or --keep-exif.
+STRIP_EXIF="${STRIP_EXIF:-1}"
+
+for arg in "$@"; do
+    case "$arg" in
+        --keep-exif) STRIP_EXIF=0 ;;
+        -h|--help)
+            echo "usage: ./build.sh [--keep-exif]"
+            echo "  --keep-exif   do not strip image metadata (env: STRIP_EXIF=0)"
+            exit 0 ;;
+        *) echo "unknown option: $arg" >&2; exit 1 ;;
+    esac
+done
+
+# Fail before writing any output if the default cannot be honoured
+if [[ "$STRIP_EXIF" == "1" ]] && ! command -v exiftool >/dev/null 2>&1; then
+    echo "error: exiftool is required to strip image metadata." >&2
+    echo "  install: apt install libimage-exiftool-perl   (or: brew install exiftool)" >&2
+    echo "  bypass:  STRIP_EXIF=0 ./build.sh   or   ./build.sh --keep-exif" >&2
+    exit 1
+fi
+
 # Create output directory
 mkdir -p "$OUTPUT_DIR"
 
@@ -57,7 +80,18 @@ done
 # Copy assets
 cp -r "$ASSETS_DIR"/* "$OUTPUT_DIR/"
 
-# Copy images
+# Copy images, then strip metadata from the copies (originals are never touched)
 cp -r "$IMAGES_DIR" "$OUTPUT_DIR/"
 
+if [[ "$STRIP_EXIF" == "1" ]]; then
+    if compgen -G "$OUTPUT_DIR/$IMAGES_DIR/*" > /dev/null; then
+        if ! exiftool -all= -overwrite_original -q -q "$OUTPUT_DIR/$IMAGES_DIR"; then
+            echo "error: exiftool failed; output images may still contain metadata" >&2
+            exit 1
+        fi
+    fi
+else
+    echo "warning: EXIF stripping disabled, image metadata will be published as-is" >&2
+fi
+
 echo "Gallery generated successfully in $OUTPUT_DIR/index.html"