Rewrite resource optimization script to:

- Use make, so optimization only happens for new resources (remove files to regenerate)
- Automatically make files that are under a certain limit (400,000 pixels) high quality JP2s (for Apple Watch)

Makefile

@@ -73,4 +73,4 @@ site-upload: bootstrap site-build
 # Resources
 
 resources:
-	python scripts/resources-optimize.py
+	scripts/resources-optimize.sh

scripts/jp2-convert.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+INPUT=$1
+OUTPUT=$2
+STANDARD_QUALITY=$3
+SMALL_PIXEL_LIMIT=$4
+SMALL_QUALITY=$5
+
+# ---
+
+XPATH_SCRIPT="number(//key[text()='pixelWidth']/following-sibling::integer[1]) * number(//key[text()='pixelHeight']/following-sibling::integer[1]) < $SMALL_PIXEL_LIMIT"
+
+QUALITY=$STANDARD_QUALITY
+if [ -n "`sips -g allxml "$INPUT" | xmllint --xpath "$XPATH_SCRIPT" - | grep true`" ]; then
+    QUALITY=$SMALL_QUALITY
+fi
+
+sips -s format jp2 "$INPUT" -s formatOptions $QUALITY --out "$OUTPUT"

scripts/resources-optimize.sh

@@ -0,0 +1,60 @@
+#!/bin/bash
+
+PATH=/usr/local/bin:/usr/bin:/bin
+
+if [ -z "`which optipng`" ]; then
+    brew install optipng
+fi
+
+if [ -z "`which cwebp`" ]; then
+    brew install webp
+fi
+
+SCRIPT_PATH="$( cd "$( dirname "$0" )" && pwd )"
+
+cd "extras"
+
+SOURCE_PATH=DeviceResources
+TARGET_PATH=resources.framerjs.com/static/DeviceResources
+
+JP2_QUALITY=25
+JP2_QUALITY_SMALL=100
+WEBP_QUALITY=90
+SMALL_PIXEL_LIMIT=400000
+
+mkdir -p "$TARGET_PATH"
+
+cd "$SOURCE_PATH"
+pax -wrs'/png$/unoptim.png/' *.png "../$TARGET_PATH"
+cd - > /dev/null
+
+cd "$TARGET_PATH"
+
+cat > "Makefile" <<EOF
+UNOPTIMIZED_FILES := \$(wildcard *.unoptim.png)
+PNG_FILES  := \$(patsubst %.unoptim.png, %.png, \$(UNOPTIMIZED_FILES))
+JP2_FILES  := \$(patsubst %.unoptim.png, %.jp2, \$(UNOPTIMIZED_FILES))
+WEBP_FILES := \$(patsubst %.unoptim.png, %.webp, \$(UNOPTIMIZED_FILES))
+
+all: png jp2 webp
+
+png: \$(PNG_FILES)
+
+jp2: \$(JP2_FILES)
+
+webp: \$(WEBP_FILES)
+
+\$(PNG_FILES): %.png: %.unoptim.png
+	optipng -clobber \$< -out \$@
+
+\$(JP2_FILES): %.jp2: %.unoptim.png
+	$SCRIPT_PATH/jp2-convert.sh \$< \$@ $JP2_QUALITY $SMALL_PIXEL_LIMIT $JP2_QUALITY_SMALL    
+
+\$(WEBP_FILES): %.webp: %.unoptim.png
+	cwebp -q $WEBP_QUALITY \$< -o \$@
+EOF
+
+make all
+
+rm *.unoptim.png
+rm "Makefile"