# resizeIcons.sh # Creates new sizes from a source PNG in the iOS icon sizes

resizeIcons.sh

#!/bin/sh

# resizeIcons.sh
# Creates new sizes from a source PNG in the iOS icon sizes
# adamw@archgrove.co.uk
# Depends: sips (OS X scriptable image processing)

function resize {
  currentImage=$1
  newImage=$2
  sizeX=$3
  sizeY=$4

  cp $currentImage $newImage

  echo "Resizing $currentImage to $newImage at size $sizeX by $sizeY"
  sips -z $sizeX $sizeY $newImage > /dev/null 2>&1
}

if [ -z $1 ]; then
  echo "Usage: $0 image.png"
else
  source=$1
  base=${source%.*}
  ext="${source##*.}"

  if [ "png" != $ext ]; then
     echo "Image must have a PNG extension"
  else
    resize $source $base-120.png 120 120
    resize $source $base-80.png 80 80
  fi
fi