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Contents
# = pathlist.rb
#
# == Copyright (c) 2005 Jonas Pfenniger
#
# Ruby License
#
# This module is free software. You may use, modify, and/or redistribute this
# software under the same terms as Ruby.
#
# This program 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.
#
# == Author(s)
#
# * Jonas Pfenniger
# Author:: Jonas Pfenniger
# Copyright:: Copyright (c) 2005 Jonas Pfenniger
# License:: Ruby License
# = PathList
#
# A Path is an array containing 1..n paths. It is useful to regroup paths and
# make lookups on them.
#
# == Usage
#
# path = PathList.new(ENV['PATH'])
# path.find 'env' #=> "/usr/bin/env"
#
# # This is already done when including the library
# $:.class #=> Array
# $:.extend PathList::Finder
# $:.find_ext = 'rb'
#
# $:.find 'uri' #=> "/usr/lib/ruby/1.8/uri.rb"
#
class PathList < Array
def initialize(paths, default_ext = nil)
@find_ext = default_ext
if paths.kind_of? String
paths = paths.split(File::PATH_SEPARATOR)
end
super(paths)
end
def to_s
join(File::PATH_SEPARATOR)
end
module Finder
attr_accessor :find_ext
def find(filename, use_ext=true)
filename += '.' + @find_ext if @find_ext and use_ext
to_a.each do |path|
filepath = File.join(path, filename)
return filepath if File.exist?( filepath )
end
return nil
end
alias :include? find
end
include Finder
end
$:.extend PathList::Finder
$:.find_ext = 'rb'
# Doesn't work
#ENV['PATH'] = PathList.new(ENV['PATH'])
#++
# _____ _
# |_ _|__ ___| |_
# | |/ _ \/ __| __|
# | | __/\__ \ |_
# |_|\___||___/\__|
#
=begin #testing
require 'test/unit'
# Needs a Mockup
# It is not possible to test file lookups in a platform independent manner.
class TC_PathList < Test::Unit::TestCase
end
=end
Version data entries
16 entries across 16 versions & 1 rubygems