check_libs.rb

require 'mechanize'

@agent = Mechanize.new
=begin
TODO
- better matching library
- read variables
=end

@props = {}

def prepare
  dir = File.expand_path(File.dirname(__FILE__))
  File.readlines(File.join(dir, '..', 'gradle.properties')).select do |l|
    l.start_with?('#') == false
  end.map do |l|
    key, value = l.split('=').map(&:strip)
    @props[key] = value
  end
end

def run(app)
  dir = File.expand_path(File.dirname(__FILE__))
  File.readlines(File.join(dir, '..', app, 'build.gradle')).each do |l|
    if l =~ /classpath/ || l =~ /^\s*(debug|minfied|test|androidTest)?(compile|implementation|annotationProcessor|compileOnly)\b/i
      lib = parse(l)
      check(lib) unless lib.nil?
    end
  end
end

def parse(line)
  m = line.match(/('|")(.*):(.*):(.*)\1/)
  if m
    { group: m[2], artifact: m[3], version: variable(m[4]) }
  else
    m = line.match(/group:\s*('|")([^'"]+)\1,\s+name:\s*('|")([^'"]+)\3,\s+version:\s*(.*)/)
    if m
      { group: m[2], artifact: m[4], version: variable(m[5]) }
    else
      nil
    end
  end
end

def variable(v)
  v = v.gsub(/'|"|\$|{|}/, '')
  if @props.has_key?(v)
    @props[v]
  else
    v
  end
end

def check(lib)
  repos = [
    'https://maven.google.com',
    'http://repo1.maven.org/maven2',
    'http://jcenter.bintray.com',
    'https://jitpack.io',
    'https://maven.fabric.io/public',
    'http://devrepo.kakao.com:8088/nexus/content/repositories/kakaodev-releases'
  ]
  found = repos.find do |repo|
    begin
      url = get_metadata(lib, repo)
      page = @agent.get(url)
      page.search('metadata')
      true
    rescue Exception => e
      false
    end
  end
  if found
    url = get_metadata(lib, found)
    page = @agent.get(url)
    last = page.search('metadata > versioning > versions > version').select {|n| n.text =~ /^[\d.]+$/ }.last.text
    versions = page.search('metadata > versioning > versions > version')
    if lib[:version] == last
      # puts "UP-TO-DATE: #{lib}"
    else
      puts "New version: #{last} - #{lib}, (#{url})"
    end
  else
    puts "Cannot find: #{lib}"
  end
end

def get_metadata(lib, repo)
  path = "#{lib[:group]}/#{lib[:artifact]}".gsub(/\./, '/')
  url = "#{repo}/#{path}/maven-metadata.xml"
end

prepare
run('app')
# 기타 사용하는 모듈들