change_icon_at_build_time.sh

#!/bin/sh

IFS=$'\n'
buildNumber=$(/usr/libexec/PlistBuddy -c "Print CFBundleVersion" "${PROJECT_DIR}/${INFOPLIST_FILE}")
versionNumber=$(/usr/libexec/PlistBuddy -c "Print CFBundleShortVersionString" "${PROJECT_DIR}/${INFOPLIST_FILE}")
PATH=${PATH}:/usr/local/bin

function generateIcon () {
  BASE_IMAGE_NAME=$1
    
  TARGET_PATH="${BUILT_PRODUCTS_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/${BASE_IMAGE_NAME}"
  echo $TARGET_PATH
  echo $SRCROOT
  echo $(find ${SRCROOT} -name "AppIcon60x60@2x.png")
  BASE_IMAGE_PATH=$(find ${SRCROOT} -name ${BASE_IMAGE_NAME})
  WIDTH=$(identify -format %w ${BASE_IMAGE_PATH})
  FONT_SIZE=$(echo "$WIDTH * .15" | bc -l)
  echo "font size $FONT_SIZE"
    
  if [ "${CONFIGURATION}" == "Debug" ]; then
  convert debugRibbon.png -resize ${WIDTH}x${WIDTH} resizedRibbon.png
  convert ${BASE_IMAGE_PATH} -fill white -font Times-Bold -pointsize ${FONT_SIZE} -gravity south -annotate 0 "$buildNumber" - | composite resizedRibbon.png - ${TARGET_PATH}
  fi
    
  if [ "${CONFIGURATION}" == "Beta" ]; then
  convert betaRibbon.png -resize ${WIDTH}x${WIDTH} resizedRibbon.png
  convert ${BASE_IMAGE_PATH} -fill white -font Times-Boldr -pointsize ${FONT_SIZE} -gravity south -annotate 0 "$buildNumber" - | composite resizedRibbon.png - ${TARGET_PATH}
  fi
}

generateIcon "AppIcon60x60@2x.png"
generateIcon "AppIcon60x60@3x.png"
generateIcon "AppIcon76x76~ipad.png"
generateIcon "AppIcon76x76@2x~ipad.png"