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#--
# Copyright 2006 Luke Kanies <luke@madstop.com>
#
# 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) any later version.
#
# 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, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#
#--
module Facter
# This is just so the other classes have the constant.
module Util; end
require 'facter/util/fact'
require 'facter/util/collection'
include Comparable
include Enumerable
FACTERVERSION = '1.5.9'
# = Facter
# Functions as a hash of 'facts' you might care about about your
# system, such as mac address, IP address, Video card, etc.
# returns them dynamically
# == Synopsis
#
# Generally, treat <tt>Facter</tt> as a hash:
# == Example
# require 'facter'
# puts Facter['operatingsystem']
#
# Set LANG to force i18n to C
#
ENV['LANG'] = 'C'
GREEN = "[0;32m"
RESET = "[0m"
@@debug = 0
@@timing = 0
# module methods
def self.collection
unless defined?(@collection) and @collection
@collection = Facter::Util::Collection.new
end
@collection
end
# Return the version of the library.
def self.version
return FACTERVERSION
end
# Add some debugging
def self.debug(string)
if string.nil?
return
end
if self.debugging?
puts GREEN + string + RESET
end
end
def self.debugging?
@@debug != 0
end
# show the timing information
def self.show_time(string)
puts "#{GREEN}#{string}#{RESET}" if string and Facter.timing?
end
def self.timing?
@@timing != 0
end
# Return a fact object by name. If you use this, you still have to call
# 'value' on it to retrieve the actual value.
def self.[](name)
collection.fact(name)
end
class << self
[:fact, :flush, :list, :value].each do |method|
define_method(method) do |*args|
collection.send(method, *args)
end
end
[:list, :to_hash].each do |method|
define_method(method) do |*args|
collection.load_all
collection.send(method, *args)
end
end
end
# Add a resolution mechanism for a named fact. This does not distinguish
# between adding a new fact and adding a new way to resolve a fact.
def self.add(name, options = {}, &block)
collection.add(name, options, &block)
end
def self.each
# Make sure all facts are loaded.
collection.load_all
collection.each do |*args|
yield(*args)
end
end
class << self
# Allow users to call fact names directly on the Facter class,
# either retrieving the value or comparing it to an existing value.
def method_missing(name, *args)
question = false
if name.to_s =~ /\?$/
question = true
name = name.to_s.sub(/\?$/,'')
end
if fact = collection.fact(name)
if question
value = fact.value.downcase
args.each do |arg|
if arg.to_s.downcase == value
return true
end
end
# If we got this far, there was no match.
return false
else
return fact.value
end
else
# Else, fail like a normal missing method.
raise NoMethodError, "Could not find fact '%s'" % name
end
end
end
# Clear all facts. Mostly used for testing.
def self.clear
Facter.flush
Facter.reset
end
# Set debugging on or off.
def self.debugging(bit)
if bit
case bit
when TrueClass; @@debug = 1
when FalseClass; @@debug = 0
when Fixnum
if bit > 0
@@debug = 1
else
@@debug = 0
end
when String;
if bit.downcase == 'off'
@@debug = 0
else
@@debug = 1
end
else
@@debug = 0
end
else
@@debug = 0
end
end
# Set timing on or off.
def self.timing(bit)
if bit
case bit
when TrueClass; @@timing = 1
when Fixnum
if bit > 0
@@timing = 1
else
@@timing = 0
end
end
else
@@timing = 0
end
end
def self.warn(msg)
if Facter.debugging? and msg and not msg.empty?
msg = [msg] unless msg.respond_to? :each
msg.each { |line| Kernel.warn line }
end
end
# Remove them all.
def self.reset
@collection = nil
end
# Load all of the default facts, and then everything from disk.
def self.loadfacts
collection.load_all
end
@search_path = []
# Register a directory to search through.
def self.search(*dirs)
@search_path += dirs
end
# Return our registered search directories.
def self.search_path
@search_path.dup
end
end
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