Add support for default settings, which are applied on every argument

README.md

@@ -17,7 +17,7 @@ So µ-optparse is for you if you are looking for
 What is µ-optparse?
 -------------------
 
-µ-optparse is a small wrapper around [optparse](http://www.ruby-doc.org/stdlib/libdoc/optparse/rdoc/classes/OptionParser.html), weighing **less than 75 lines of code**.
+µ-optparse is a small wrapper around [optparse](http://www.ruby-doc.org/stdlib/libdoc/optparse/rdoc/classes/OptionParser.html), weighing **less than 80 lines of code**.
 optparse (or OptionParser) on the other hand is a command line parser, which ships with ruby.
 After you defined available options, it automatically creates a help page and is able to parse ARGV accordingly.
 However, optparse requires you to repeat yourself quite often, which leads to many lines of code, just to configure the available options.

lib/micro-optparse/parser.rb

@@ -2,14 +2,16 @@
 
 class Parser
   attr_accessor :banner, :version
-  def initialize
+  def initialize(default_settings = {})
     @options = []
     @used_short = []
     @default_values = {}
+    @default_settings = default_settings
     yield self if block_given?
   end
 
   def option(name, desc, settings = {})
+    settings = @default_settings.clone.merge(settings)
     @options << {:name => name, :description => desc, :settings => settings}
   end
 

spec/parser_spec.rb

@@ -121,6 +121,29 @@
       result[:second_listarg].should == ['blah', 'blah', 'blah']
     end
   end
+
+  describe "default settings" do
+    it "should set default settings on all options" do
+      parser = Parser.new(:optional => true) do |p|
+        p.option :foo, "foo argument"
+        p.option :bar, "bar argument"
+      end
+
+      result = parser.process!([])
+      result.length.should == 0 # all optional
+    end
+
+    it "should allow to overwrite default settings" do
+      parser = Parser.new(:default => "Bar") do |p|
+        p.option :foo, "foo argument", :default => "Foo"
+        p.option :bar, "bar argument"
+      end
+
+      result = parser.process!([])
+      result[:foo].should == "Foo"
+      result[:bar].should == "Bar"
+    end
+  end
 
   describe "help message" do
     it "should show help message when called with --help or -h" do