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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
# Checks if there are any ebuilds for the +atom+
def has_ebuilds?(atom)
return false unless valid_atom? atom
Dir.chdir("#{portdir}/#{atom}") do
Dir.glob('*.ebuild') do |ebuild|
return true
end
end
false
rescue Errno::ENOENT
false
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, :iuse, :required_use,
# :pdepend, :provide, :eapi, :properties, :defined_phases
# as per portage/pym/portage/cache/metadata.py (database.auxdbkey_order)
#
# @param [String] atom Package atom (without version, see next parameter)
# @param [String] version Desired version, tries to use the last available one (as decided by a rather stupid technique)
# @return [Hash{Symbol => String, Array}] A hash with all available metadata (see above for keys)
def get_metadata(atom, version = :latest)
raise(ArgumentError, "Invalid package atom") unless Portage.valid_atom?(atom)
raise(ArgumentError, "Invalid version string") if version.to_s.include? '..'
items = {
'DEFINED_PHASES' => :defined_phases,
'DEPEND' => :depend,
'DESCRIPTION' => :description,
'EAPI' => :eapi,
'HOMEPAGE' => :homepage,
'IUSE' => :iuse,
'KEYWORDS' => :keywords,
'LICENSE' => :license,
'PDEPEND' => :pdepend,
'PROPERTIES' => :properties,
'RDEPEND' => :rdepend,
'RESTRICT' => :restrict,
'REQUIRED_USE' => :required_use,
'SLOT' => :slot,
'SRC_URI' => :src_uri
}
valid_keys = items.keys
# List of metadata items to split at space
split_keys = ['SRC_URI', 'IUSE', 'KEYWORDS', 'PROPERTIES', 'DEFINED_PHASES']
cat, pkg = atom.split('/', 2)
r = Regexp.compile('^(\\w+)=([^\n]*)')
result = {}
Dir.chdir(File.join(Glsamaker::Portage.portdir, 'metadata', 'md5-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 (match = r.match($_)) != nil and valid_keys.include? match[1]
if split_keys.include? match[1]
result[items[match[1]]] = match[2].split(' ')
else
result[items[match[1]]] = match[2]
end
end
end
f.close
end
result
end
end
end
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