@@ -68,13 +68,15 @@ programs utilizing the library have been placed. Here's a snippet: end end - puts 'port: ' + Choice.choices[:port] + puts 'port: ' + Choice[:port] Notice the last line. For free, you will be given a <tt>Choice.choices</tt> -hash which contain, at runtime, the options found and their values. +hash which contain, at runtime, the options found and their values. + +<tt>Choice[:key]</tt> is a shortcut for <tt>Choice.choices[:key]</tt>. Because we gave option <tt>:port</tt> a default of 21, -<tt>Choice.choices[:port]</tt> should be 21 if we run ftpd.rb with no options. +<tt>Choice[:port]</tt> should be 21 if we run ftpd.rb with no options. Let's see. $ ruby ftpd.rb @@ -89,7 +91,7 @@ Alright. And, of course, there is the hard way of doing things. $ ruby ftpd.rb --port=2100 port: 2100 - + That <tt>:version</tt> option looks pretty interesting, huh? I wonder what it does... README @@ -47,20 +47,25 @@ module Choice @@choices end + # Shortcut access to Choice.choices + def [](choice) + choices[choice] + end + # Defines an option. def option(opt, options = {}, &block) # Notice: options is maintained as an array of arrays, the first element # the option name and the second the option object. @@options << [opt.to_s, Option.new(options, &block)] end - + # Separators are text displayed by --help within the options block. def separator(str) - # We store separators as simple strings in the options array to maintain + # We store separators as simple strings in the options array to maintain # order. They are ignored by the parser. @@options << str end - + # Define the banner, header, footer methods. All are just getters/setters # of class variables. %w[banner header footer].each do |method| lib/choice.rb @@ -32,27 +32,30 @@ class TestChoice < Test::Unit::TestCase footer "" footer "--help This message" end - + band = 'LedZeppelin' animal = 'Reindeer' - + args = ['-b', band, "--animal=#{animal}"] Choice.args = args - + assert_equal band, Choice.choices['band'] assert_equal animal, Choice.choices[:animal] assert_equal ["Tell me about yourself?", ""], Choice.header assert_equal ["", "--help This message"], Choice.footer + + assert_equal Choice.choices['band'], Choice['band'] + assert_equal Choice.choices[:animal], Choice[:animal] end - + def test_failed_parse assert Hash.new, Choice.parse end - + HELP_STRING = '' def test_help Choice.output_to(HELP_STRING) - + Choice.options do banner "Usage: choice [-mu]" header "" test/test_choice.rb 8b12556493c86b07ff3efc0fa31f0981b5d1ff83 Chris Wanstrath chris@ozmm.org http://github.com/defunkt/choice/commit/1764a260e927632039d089de2d85c12264edbcba 1764a260e927632039d089de2d85c12264edbcba 2009-08-06T14:14:13-07:00 2009-08-06T14:14:13-07:00 Add Choice[:key] shortcut 263a1854f1520128078e0a6fd6d2247dc0c22b0e Chris Wanstrath chris@ozmm.org