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# ===GLSAMaker v2
# Copyright (C) 2009-2011 Alex Legler <a3li@gentoo.org>
# Copyright (C) 2009 Pierre-Yves Rofes <py@gentoo.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# For more information, see the LICENSE file.
require 'nokogiri'
module Glsamaker
# Helper functions for Portage tree interaction
module Portage
# Package description helper
class Description
class << self
# Tries to fetch the description for the package +atom+ from
# an ebuild's entry (works if running on Gentoo)
def ebuild(atom)
raise(ArgumentError, "Invalid package atom") unless Portage.valid_atom?(atom)
nil
end
def eix(atom)
nil
end
# Loads a description for +atom+ from packages.gentoo.org
def pgo(atom)
raise(ArgumentError, "Invalid package atom") unless Portage.valid_atom?(atom)
n = Nokogiri::XML(Glsamaker::HTTP.get("http://packages.gentoo.org/package/#{atom}"))
node = n.css('p.description').first.children.first
if node.type == Nokogiri::XML::Node::TEXT_NODE
node.to_s
else
raise ArgumentError, "XML parse error"
end
end
# Loads a description for +atom+ from Google
def google(atom)
nil
end
end
end
module_function
# Returns the location of the portage dir, or raises an exception if it cannot be found
def portdir
unless File.directory? GLSAMAKER_PORTDIR
raise "GLSAMAKER_PORTDIR is not a directory"
end
GLSAMAKER_PORTDIR
end
# Validates the atom +atom+
def valid_atom?(atom)
atom =~ /^[+a-zA-Z0-9_-]+\/[+a-zA-Z0-9_-]+$/
end
# Gets a description
def get_description(atom)
Description.eix(atom) ||
Description.ebuild(atom) ||
Description.pgo(atom) ||
Description.google(atom) ||
"[could not get a description]"
end
# Returns package atoms that match +re+
def find_packages(re)
results = []
Dir.chdir(portdir) do
Dir.glob('*-*') do |cat|
Dir.chdir(cat) do
Dir.glob("*") do |pkg|
pkg =~ re and results << "#{cat}/#{pkg}"
end
end
end
end
results
end
# Returns an array of maintainer email addresses for the package +atom+
def get_maintainers(atom)
raise(ArgumentError, "Invalid package atom") unless Portage.valid_atom?(atom)
raise(ArgumentError, "Cannot find metadata") unless File.exist? File.join(portdir, atom, 'metadata.xml')
x = Nokogiri::XML(File.read(File.join(portdir, atom, 'metadata.xml')))
herds = []
maintainers = []
x.xpath('/pkgmetadata/herd').each {|h| herds << h.content }
x.xpath('/pkgmetadata/maintainer/email').each {|m| maintainers << m.content }
unless herds.first == "no-herd"
herds_xml = Nokogiri::XML(File.read(File.join(portdir, 'metadata', 'herds.xml')))
herds_email = herds.map {|h| herds_xml.xpath("/herds/herd/name[text()='#{h}']").first.parent.xpath("./email").first.content }
(maintainers + herds_email).uniq
else
maintainers
end
end
# Returns information from the portage metadata cache
# Values: :depend, :rdepend, :slot, :src_uri, :restrict, :homepage,
# :license, :description, :keywords, :inherited, :iuse, :required_use,
# :pdepend, :provide, :eapi, :properties, :defined_phases
# as per portage/pym/portage/cache/metadata.py (database.auxdbkey_order)
def get_metadata(atom, version = :latest, what = [])
raise(ArgumentError, "Invalid package atom") unless Portage.valid_atom?(atom)
raise(ArgumentError, "Invalid version string") if version.to_s.include? '..'
return {} if what == []
lines = [nil, :depend, :rdepend, :slot, :src_uri, :restrict, :homepage,
:license, :description, :keywords, :inherited, :iuse, :required_use,
:pdepend, :provide, :eapi, :properties, :defined_phases]
cat, pkg = atom.split('/', 2)
result = {}
Dir.chdir(File.join(Glsamaker::Portage.portdir, 'metadata', 'cache', cat)) do
if version == :latest
f = File.open(Dir.glob("#{pkg}-[0-9]*").last, 'r')
else
f = File.open(File.join("#{pkg}-#{version}"), 'r')
end
while f.gets
if what.include?(lines[$.])
result[lines[$.]] = $_.chomp
end
end
f.close
end
result
end
end
end
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