# -*- encoding: utf-8 -*-
#
# Copyright 2014 North Development AB
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

require 'rubygems/package'
require 'zlib'

module PuppetForgeServer::Utils
  module Archiver
    def read_from_archive(archive, name_regex)
      tar = Gem::Package::TarReader.new(Zlib::GzipReader.open(archive))
      tar.rewind
      files = {}
      tar.each do |obj|
        files[obj.full_name] = obj.read if obj.file? && obj.full_name =~ name_regex
      end
      return files unless files.empty?
      raise "Given name #{name_regex} not found in #{archive}"
    end
  end
end
