tab-completion: added support for tab completion

lib/feature/commander.rb

@@ -3,6 +3,7 @@ require_relative './end'
 require_relative './trash'
 require_relative './rebase'
 require_relative './merge_to'
+require_relative './tab'
 require_relative './branch'
 
 module Feature
@@ -17,6 +18,7 @@ module Feature
         when "trash"  then Feature::Trash.new(argv)
         when "rebase" then Feature::Rebase.new(argv)
         when "merge"  then Feature::MergeTo.new(argv)
+        when "tab"    then Feature::Tab.new(argv)
         else               Feature::Branch.new(argv)
       end
     end
@@ -32,6 +34,11 @@ module Feature
     def execute
       subcommand.execute
     end
+
+    def self.tab_completion
+      [:start, :end, :trash, :rebase, :merge].map(&:to_s).sort
+    end
+
   end
 
 end

lib/feature/tab.rb

@@ -0,0 +1,32 @@
+require_relative './base'
+
+module Feature
+
+  class Tab < Feature::Base
+    def valid?
+      argv.size > 0
+    end
+
+    def help
+      puts
+      puts "USAGE: feature tab [pattern]"
+      puts
+      exit
+    end
+
+    def execute
+      if argv.size == 1
+        pattern = '.+'
+      else
+        pattern = "^#{argv[1]}"
+      end
+
+      regexp = Regexp.new(pattern)
+      cmds = Feature::Commander.tab_completion
+      cmds = cmds.select { |x| regexp.match(x) }
+
+      puts cmds.join("\n")
+    end
+  end
+
+end