File indexing completed on 2024-04-21 05:08:03

 # frozen_string_literal: true
 #
 # Copyright (C) 2016 Harald Sitter <sitter@kde.org>
 #
 # This library is free software; you can redistribute it and/or
 # modify it under the terms of the GNU Lesser General Public
 # License as published by the Free Software Foundation; either
 # version 2.1 of the License, or (at your option) version 3, or any
 # later version accepted by the membership of KDE e.V. (or its
 # successor approved by the membership of KDE e.V.), which shall
 # act as a proxy defined in Section 6 of version 3 of the license.
 #
 # This library is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 # Lesser General Public License for more details.
 #
 # You should have received a copy of the GNU Lesser General Public
 # License along with this library.  If not, see <http://www.gnu.org/licenses/>.
 
 require 'nokogiri'
 
 module Debian
   class UScan
     # State identifier strings.
     module States
       NEWER_AVAILABLE = 'Newer version available'.freeze
       UP_TO_DATE = 'up to date'.freeze
       DEBIAN_NEWER = 'Debian version newer than remote site'.freeze
       OLDER_ONLY = 'only older package available'.freeze
 
       # Compatiblity map because uscan randomly changes the bloody strings.
       # @param [String] string actual uscan string we want to map
       # @return [String] const representation of that string
       def self.map(string)
         case string
         when 'newer package available'
           NEWER_AVAILABLE
         else
           string
         end
       end
     end
 
     # UScan's debian external health status format parser.
     class DEHS
       class ParseError < StandardError; end
 
       # A Package status report.
       class Package
         attr_reader :name
         attr_reader :status
         attr_reader :upstream_version
         attr_reader :upstream_url
 
         def initialize(name)
           @name = name
         end
 
         # Sets instance variable according to XML element.
         def _apply_element(element)
           instance_variable_set(to_instance(element.name), element.content)
         end
 
         private
 
         def to_instance(str)
           "@#{str.tr('-', '_')}".to_sym
         end
       end
 
       class << self
         def parse_packages(xml)
           packages = []
           Nokogiri::XML(xml).root.elements.each do |element|
             if element.name == 'package'
               next packages << Package.new(element.content)
             end
             verify_status(element)
             packages[-1]._apply_element(element)
           end
           packages
         end
 
         private
 
         def verify_status(element)
           return unless element.name == 'status'
           # Edit the content to the mapped value, so we always get consistent
           # strings.
           element.content = States.map(element.content)
           return if States.constants.any? do |const|
             States.const_get(const) == element.content
           end
           raise ParseError, "Unmapped status: '#{element.content}'"
         end
       end
     end
   end
 end