[Ruby] Image minifier

minifier.rb

#!/usr/bin/env ruby
fail "[E] Usage:\n\r  ruby DIR_NAME <NOP option>\n\r" unless ARGV.first

puts "[!] Processing images\n\r"
count = 0

sDirectoryName = ARGV.first

objDirectory = Dir["#{sDirectoryName}/**/*.{jpg,jpeg,JPG,JPEG,png,PNG}"] # jpg,jpeg,JPG,JPEG, png,PNG

iTotalSize = 0.0
iTotalCompressedSize = 0.0
iTotalRatio = 0.0

def fnConvert(in_sFilePath)
  sTemporaryDirPath = Dir.tmpdir()
  sFileName = File.basename(in_sFilePath)
  sTemporaryFilePath = "#{sTemporaryDirPath}/#{sFileName}"
  sEscapedFilePath = Regexp.escape(in_sFilePath) #.gsub(/[ \/\\\(\)]/, '\\$1')
  sEscapedTemporaryFilePath = Regexp.escape(sTemporaryFilePath)
  print("[!] Convert #{sEscapedFilePath}\n\r")
  # `convert -strip -interlace Plane -quality 60% #{sEscapedFilePath} #{sEscapedTemporaryFilePath}`
  sResult = `identify `
end

def fnHuminifySize(in_iSize)
  aPrefixes = ['', 'K', 'M', 'G', 'T']
  iIterator = 0
  fSize = in_iSize.abs

  while fSize>1024.0 do
    fSize = fSize/1024.0
    iIterator += 1
  end

  return  "#{fSize.round(2)} #{aPrefixes[iIterator]}B "
end


aFiles = { "hFiles" => {}, "iSize" => 0.0 }

objDirectory.each do |sFilePath|
  aFiles["hFiles"][sFilePath] = {
    "sFileName" => sFilePath,
    "iSize" => File.size(sFilePath)
  }
  aFiles["iSize"] += File.size(sFilePath)
end

print("Files: #{aFiles["hFiles"].length} Total size: #{fnHuminifySize(aFiles["iSize"])}\n\r")

exit()

objDirectory.each do |sFilePath|
  iOldFileSize = File.size(sFilePath)

  if (iOldFileSize/(1024.0*1024.0) > 1.0)
    count += 1

    fnConvert(sFilename)

    iNewFileSize = File.size(sFilePath)
    fCompressRatio = ((iOldFileSize - iNewFileSize)/iOldFileSize).abs*100.0

    print("[!] Size:#{fnHuminifySize(iNewFileSize)} Old size:#{fnHuminifySize(iOldFileSize)} Ratio:#{fCompressRatio}\n\r")
    iTotalSize += iOldFileSize
    iTotalCompressedSize += iOldFileSize - iNewFileSize
    fTotalRatio = (iTotalCompressedSize/iTotalSize).abs*100.0

    print("[!] Total size:#{fnHuminifySize(iTotalSize)} Compressed size:#{fnHuminifySize(iTotalCompressedSize)} Ratio:#{fTotalRatio}\n\r")
    exit()
  end
end
puts "[!] Completed: #{count} files processed..\n\r"