#!/usr/bin/ruby
require 'find'

# extract arguements from command line
dirToSearch = ARGV[0]
packageName = ARGV[1].to_s.strip
puts "dirToSearch=#{dirToSearch};packageName=#{packageName}"

results = []

Find.find(dirToSearch).select {
  |f| f.end_with? ".jar"
}.each {
  |f|
    puts "Checking #{f}"
    #as jar tf shows the package information like the file path style
    # we need to map all the dots(.) to slashes(/)
    contains = `jar tf #{f}`.include? packageName.gsub ".", "/"
  if contains
      results << "#{f}"
  end
}

puts "The jar files containing #{packageName}"
puts results

ruby findJarByPackageName.rb . "com.alipay"

dirToSearch=.;packageName=com.alipay
Checking ./0.jar
Checking ./HwPush_SDK.jar
Checking ./MiPush_SDK_Client_3_0_3.jar
Checking ./alipaySdk-20180601.jar
Checking ./classes.jar
Checking ./full.jar
Checking ./gradle-wrapper.jar
Checking ./huawei-pps-channel-sdk.jar
Checking ./mqtt-client-java1.4-uber-1.14.jar
Checking ./mta-sdk-1.6.2.jar
Checking ./open_sdk_r5788.jar
Checking ./pinyin4j-2.5.0.jar
Checking ./res.jar
Checking ./tbs_sdk_thirdapp_v3.6.0.1249_43610_sharewithdownload_withoutGame_obfs_20180608_114954.jar
Checking ./zxing.jar
The jar files containing com.alipay
./alipaySdk-20180601.jar