Import RubyGems trunk revision 1493.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@13862 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/rubygems/gem_runner.rb

@@ -0,0 +1,58 @@
+#--
+# Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
+# All rights reserved.
+# See LICENSE.txt for permissions.
+#++
+
+require 'rubygems/command_manager'
+require 'rubygems/config_file'
+require 'rubygems/doc_manager'
+
+module Gem
+
+  ####################################################################
+  # Run an instance of the gem program.
+  #
+  class GemRunner
+
+    def initialize(options={})
+      @command_manager_class = options[:command_manager] || Gem::CommandManager
+      @config_file_class = options[:config_file] || Gem::ConfigFile
+      @doc_manager_class = options[:doc_manager] || Gem::DocManager
+    end
+
+    # Run the gem command with the following arguments.
+    def run(args)
+      start_time = Time.now
+      do_configuration(args)
+      cmd = @command_manager_class.instance
+      cmd.command_names.each do |command_name|
+        config_args = Gem.configuration[command_name]
+        config_args = case config_args
+                      when String
+                        config_args.split ' '
+                      else
+                        Array(config_args)
+                      end
+        Command.add_specific_extra_args command_name, config_args
+      end
+      cmd.run(Gem.configuration.args)
+      end_time = Time.now
+      if Gem.configuration.benchmark 
+        printf "\nExecution time: %0.2f seconds.\n", end_time-start_time
+        puts "Press Enter to finish"
+        STDIN.gets
+      end
+    end
+
+    private
+
+    def do_configuration(args)
+      Gem.configuration = @config_file_class.new(args)
+      Gem.use_paths(Gem.configuration[:gemhome], Gem.configuration[:gempath])
+      Gem::Command.extra_args = Gem.configuration[:gem]
+      @doc_manager_class.configured_args = Gem.configuration[:rdoc]
+    end
+
+  end # class
+end # module