* lib/rubygems: Import RubyGems from master as of commit b165260

* test/rubygems:  ditto.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42124 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 69 insertions, 53 deletions

diff --git a/lib/rubygems/commands/help_command.rb b/lib/rubygems/commands/help_command.rb
index 4cbb8dadee..ed7be903ac 100644
--- a/lib/rubygems/commands/help_command.rb
+++ b/lib/rubygems/commands/help_command.rb
@@ -94,6 +94,8 @@ platform.
 
   def initialize
     super 'help', "Provide help on the 'gem' command"
+
+    @command_manager = Gem::CommandManager.instance
   end
 
   def arguments # :nodoc:
@@ -110,46 +112,10 @@ platform.
   end
 
   def execute
-    command_manager = Gem::CommandManager.instance
     arg = options[:args][0]
 
     if begins? "commands", arg then
-      out = []
-      out << "GEM commands are:"
-      out << nil
-
-      margin_width = 4
-
-      desc_width = command_manager.command_names.map { |n| n.size }.max + 4
-
-      summary_width = 80 - margin_width - desc_width
-      wrap_indent = ' ' * (margin_width + desc_width)
-      format = "#{' ' * margin_width}%-#{desc_width}s%s"
-
-      command_manager.command_names.each do |cmd_name|
-        command = command_manager[cmd_name]
-
-        summary =
-          if command then
-            command.summary
-          else
-            "[No command found for #{cmd_name}]"
-          end
-
-        summary = wrap(summary, summary_width).split "\n"
-        out << sprintf(format, cmd_name, summary.shift)
-        until summary.empty? do
-          out << "#{wrap_indent}#{summary.shift}"
-        end
-      end
-
-      out << nil
-      out << "For help on a particular command, use 'gem help COMMAND'."
-      out << nil
-      out << "Commands may be abbreviated, so long as they are unambiguous."
-      out << "e.g. 'gem i rake' is short for 'gem install rake'."
-
-      say out.join("\n")
+      show_commands
 
     elsif begins? "options", arg then
       say Gem::Command::HELP
@@ -161,29 +127,79 @@ platform.
       say PLATFORMS
 
     elsif options[:help] then
-      command = command_manager[options[:help]]
-      if command
-        # help with provided command
-        command.invoke("--help")
-      else
-        alert_error "Unknown command #{options[:help]}.  Try 'gem help commands'"
-      end
+      show_help
 
     elsif arg then
-      possibilities = command_manager.find_command_possibilities(arg.downcase)
-      if possibilities.size == 1
-        command = command_manager[possibilities.first]
-        command.invoke("--help")
-      elsif possibilities.size > 1
-        alert_warning "Ambiguous command #{arg} (#{possibilities.join(', ')})"
-      else
-        alert_warning "Unknown command #{arg}. Try gem help commands"
-      end
+      show_command_help arg
 
     else
       say Gem::Command::HELP
     end
   end
 
+  def show_commands # :nodoc:
+    out = []
+    out << "GEM commands are:"
+    out << nil
+
+    margin_width = 4
+
+    desc_width = @command_manager.command_names.map { |n| n.size }.max + 4
+
+    summary_width = 80 - margin_width - desc_width
+    wrap_indent = ' ' * (margin_width + desc_width)
+    format = "#{' ' * margin_width}%-#{desc_width}s%s"
+
+    @command_manager.command_names.each do |cmd_name|
+      command = @command_manager[cmd_name]
+
+      summary =
+        if command then
+          command.summary
+        else
+          "[No command found for #{cmd_name}]"
+        end
+
+      summary = wrap(summary, summary_width).split "\n"
+      out << sprintf(format, cmd_name, summary.shift)
+      until summary.empty? do
+        out << "#{wrap_indent}#{summary.shift}"
+      end
+    end
+
+    out << nil
+    out << "For help on a particular command, use 'gem help COMMAND'."
+    out << nil
+    out << "Commands may be abbreviated, so long as they are unambiguous."
+    out << "e.g. 'gem i rake' is short for 'gem install rake'."
+
+    say out.join("\n")
+  end
+
+  def show_command_help command_name # :nodoc:
+    command_name = command_name.downcase
+
+    possibilities = @command_manager.find_command_possibilities command_name
+
+    if possibilities.size == 1 then
+      command = @command_manager[possibilities.first]
+      command.invoke("--help")
+    elsif possibilities.size > 1 then
+      alert_warning "Ambiguous command #{command_name} (#{possibilities.join(', ')})"
+    else
+      alert_warning "Unknown command #{command_name}.  Try: gem help commands"
+    end
+  end
+
+  def show_help # :nodoc:
+    command = @command_manager[options[:help]]
+    if command then
+      # help with provided command
+      command.invoke("--help")
+    else
+      alert_error "Unknown command #{options[:help]}.  Try 'gem help commands'"
+    end
+  end
+
 end