* lib/rubygems*: Updated to RubyGems 2.0

* test/rubygems*:  ditto.

* common.mk (prelude):  Updated for RubyGems 2.0 source rearrangement.

* tool/change_maker.rb:  Allow invalid UTF-8 characters in source
  files.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37976 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/rubygems/exceptions.rb

@@ -1,7 +1,14 @@
+# TODO: the documentation in here is terrible.
+#
+# Each exception needs a brief description and the scenarios where it is
+# likely to be raised
+
 ##
 # Base exception class for RubyGems.  All exception raised by RubyGems are a
 # subclass of this one.
-class Gem::Exception < RuntimeError; end
+class Gem::Exception < RuntimeError
+  attr_accessor :source_exception
+end
 
 class Gem::CommandLineError < Gem::Exception; end
 
@@ -24,11 +31,18 @@ class Gem::EndOfYAMLException < Gem::Exception; end
 
 ##
 # Signals that a file permission error is preventing the user from
-# installing in the requested directories.
+# operating on the given directory.
+
 class Gem::FilePermissionError < Gem::Exception
-  def initialize(path)
-    super("You don't have write permissions into the #{path} directory.")
+
+  attr_reader :directory
+
+  def initialize directory
+    @directory = directory
+
+    super "You don't have write permissions for the #{directory} directory."
   end
+
 end
 
 ##
@@ -37,9 +51,12 @@ class Gem::FormatException < Gem::Exception
   attr_accessor :file_path
 end
 
-class Gem::GemNotFoundException < Gem::Exception
-  def initialize(msg, name=nil, version=nil, errors=nil)
-    super msg
+class Gem::GemNotFoundException < Gem::Exception; end
+
+class Gem::SpecificGemNotFoundException < Gem::GemNotFoundException
+  def initialize(name, version, errors=nil)
+    super "Could not find a valid gem '#{name}' (#{version}) locally or in a repository"
+
     @name = name
     @version = version
     @errors = errors
@@ -89,3 +106,4 @@ class Gem::SystemExitException < SystemExit
   end
 
 end
+