ScalaのメジャーバージョンごとのArtefactのバージョンを調べるスクリプトです。

collect_scala_artifact_version.rb

#!/usr/bin/env ruby

require 'uri'
require 'open-uri'
require 'json'
require 'pp'

def query(params)
  base_url = "http://search.maven.org/solrsearch/select?"

  params["start"] = 0
  is_finished = false
  docs = []

  begin
    url = base_url + URI.encode_www_form(params)

    open( url ) do |res|
      result = JSON.parse res.read

      if result["response"]["numFound"] == 0 then
        return [] # returns empty array
      end

      result["response"]["docs"].each do |doc|
        docs.push doc
      end

      if docs.length < result["response"]["numFound"] then
        params["start"] = docs.length
      else
        is_finished = true
      end
    end
  end while is_finished == false

  return docs
end

groupID = ARGV[0]
artifactID = ARGV[1]

if (ARGV.length < 2) 
  abort("GroupID and ArtifactID are not specified.")
end

invalid_pkg_name = Regexp.new("[^a-zA-Z0-9._-]")
if (groupID.match(invalid_pkg_name) or artifactID.match(invalid_pkg_name))
  abort("Illegal characters are included.")
end

if (artifactID.match(/_2\.\d{2}$/))
  abort("Version suffix is attached")
end

a_params = {
  :q    => %Q{g:"#{groupID}"},
  :rows => 100,
  :wt   => 'json'
}

artifacts = query(a_params).select do |artifact|
  artifact["a"].match(/^#{artifactID}_2\.\d{2}$/) 
end

vers = {}
artifacts.each do |artifact|
  v_params = {
    :q    => %Q{g:"#{groupID}" AND a:"#{artifact['a']}"},
    :core => "gav",
    :rows => 100,
    :wt   => 'json'
  }

  vers.store(artifact['a'], query(v_params).map { |result| result["v"] } )
end

pp vers