Generator for Assets.xcassets , Xcode Run Script

ImageGenerator

#!/bin/bash

# Generate UIImage extension for images assets, using in Xcode run script
base="$SRCROOT/${TARGET_NAME}"
assertPath="$base/Assets.xcassets"
fileName="$base/ImageResource.swift"
content="import UIKit\nextension UIImage {\n"
prefix="lo_"

DealWithFile() {
  entry=$1
  IFS='/' read -r -a components <<< "$entry"
  for index in "${!components[@]}"
  do
    local item="${components[index]}"
    if [[ $item == *".imageset"* ]]
    then
      imageName=${item/.imageset/}
      seperator=""
      if [[ $imageName == *" "* ]]; then
        seperator=" "
      elif [[ $imageName == *"-"*  ]]; then
        seperator="-"
      elif [[ $imageName == *"_"*  ]]; then
        seperator="_"
      elif [[ $imageName == *"."* ]]; then
        seperator="."
      fi
      echo "seperator $seperator"
      IFS="$seperator" read -r -a vnames <<< "$imageName"
      echo "vnames $vnames"
      cname=""
      for kk in "${!vnames[@]}"
      do
        name="${vnames[kk]}"
        if [ "$kk" == 0 ]
        then
          cname+=$(echo "$name" | awk '{print tolower($0)}')
        else
          cname+="$(tr '[:lower:]' '[:upper:]' <<< ${name:0:1})${name:1}"
        fi
      done
      echo "cname $cname"
      content+="    static var $prefix$cname: UIImage {  return UIImage(named: \"$imageName\")! }\n"
    fi
  done
}
ImageResourceGenerator() {
  for entry in $1/*
  do
    echo "entry: $entry"
    if [[ -d $entry ]]
    then
      IFS='/' read -r -a components <<< "$entry"
      LENGTH=${#components[@]} # Get the length.
      LAST_POSITION=$((LENGTH - 1)) # Subtract 1 from the length.
      lastComponent=${components[${LAST_POSITION}]}
      echo "lastComponent: $lastComponent"
      if [[ $lastComponent == *"."* ]]
      then
        echo "deal file $entry"
        DealWithFile "$entry"
      else
        echo "deal dir $entry"
        ImageResourceGenerator "$entry"
      fi
    fi
  done
}

ImageResourceGenerator "$assertPath"
content+="}"
echo "// Generate By Code" | tee "$fileName"
echo -e "$content" >> "$fileName"