Xcode 5 imageset generator

imageset.sh

#!/usr/bin/env bash

SOURCE_PATH=$1

for f in "$SOURCE_PATH"/*.png; do
	fullname=$(basename "$f")
	filename=${fullname%@2x.*}

	imageset="$SOURCE_PATH"/"$filename".imageset
	jsonfile="$imageset"/Contents.json

	echo "Creating folder: $imageset"
	mkdir "$imageset"

	echo "Copy image to .imageset"
	cp "$f" "$imageset"/

	echo "Creating JSON file: $jsonfile"
	touch "$jsonfile"

	echo "Write JSON file... Done."

	cat <<- EOF > "$jsonfile"
{
  "images" : [
    {
      "idiom" : "universal",
      "scale" : "1x"
    },
    {
      "idiom" : "universal",
      "scale" : "2x",
      "filename" : "$fullname"
    }
  ],
  "info" : {
    "version" : 1,
    "author" : "xcode"
  }
}
EOF
done

Usage:
sh imageset.sh /path/to/your_2x_png_folder