* lib/rubygems: Update to RubyGems 2.4.1 master(713ab65)

  Complete history at:
  https://github.com/rubygems/rubygems/blob/master/History.txt#L3-L216
* test/rubygems:  ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47582 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

5 files changed, 87 insertions, 4 deletions

diff --git a/lib/rubygems/package/file_source.rb b/lib/rubygems/package/file_source.rb
new file mode 100644
index 0000000000..85316f62e7
--- /dev/null
+++ b/lib/rubygems/package/file_source.rb
@@ -0,0 +1,33 @@
+##
+# The primary source of gems is a file on disk, including all usages
+# internal to rubygems.
+#
+# This is a private class, do not depend on it directly. Instead, pass a path
+# object to `Gem::Package.new`.
+
+class Gem::Package::FileSource < Gem::Package::Source # :nodoc: all
+
+  attr_reader :path
+
+  def initialize path
+    @path = path
+  end
+
+  def start
+    @start ||= File.read path, 20
+  end
+
+  def present?
+    File.exist? path
+  end
+
+  def with_write_io &block
+    open path, 'wb', &block
+  end
+
+  def with_read_io &block
+    open path, 'rb', &block
+  end
+
+end
+
diff --git a/lib/rubygems/package/io_source.rb b/lib/rubygems/package/io_source.rb
new file mode 100644
index 0000000000..f89593dd2d
--- /dev/null
+++ b/lib/rubygems/package/io_source.rb
@@ -0,0 +1,45 @@
+##
+# Supports reading and writing gems from/to a generic IO object.  This is
+# useful for other applications built on top of rubygems, such as
+# rubygems.org.
+#
+# This is a private class, do not depend on it directly. Instead, pass an IO
+# object to `Gem::Package.new`.
+
+class Gem::Package::IOSource < Gem::Package::Source # :nodoc: all
+
+  attr_reader :io
+
+  def initialize io
+    @io = io
+  end
+
+  def start
+    @start ||= begin
+      if io.pos > 0
+        raise Gem::Package::Error, "Cannot read start unless IO is at start"
+      end
+
+      value = io.read 20
+      io.rewind
+      value
+    end
+  end
+
+  def present?
+    true
+  end
+
+  def with_read_io
+    yield io
+  end
+
+  def with_write_io
+    yield io
+  end
+
+  def path
+  end
+
+end
+
diff --git a/lib/rubygems/package/old.rb b/lib/rubygems/package/old.rb
index 31c4111d33..65bcbb2283 100644
--- a/lib/rubygems/package/old.rb
+++ b/lib/rubygems/package/old.rb
@@ -37,7 +37,7 @@ class Gem::Package::Old < Gem::Package
 
     return @contents if @contents
 
-    open @gem, 'rb' do |io|
+    @gem.with_read_io do |io|
       read_until_dashes io # spec
       header = file_list io
 
@@ -53,7 +53,7 @@ class Gem::Package::Old < Gem::Package
 
     errstr = "Error reading files from gem"
 
-    open @gem, 'rb' do |io|
+    @gem.with_read_io do |io|
       read_until_dashes io # spec
       header = file_list io
       raise Gem::Exception, errstr unless header
@@ -83,7 +83,7 @@ class Gem::Package::Old < Gem::Package
           out.write file_data
         end
 
-        say destination if Gem.configuration.really_verbose
+        verbose destination
       end
     end
   rescue Zlib::DataError
@@ -136,7 +136,7 @@ class Gem::Package::Old < Gem::Package
 
     yaml = ''
 
-    open @gem, 'rb' do |io|
+    @gem.with_read_io do |io|
       skip_ruby io
       read_until_dashes io do |line|
         yaml << line
diff --git a/lib/rubygems/package/source.rb b/lib/rubygems/package/source.rb
new file mode 100644
index 0000000000..1f18d479da
--- /dev/null
+++ b/lib/rubygems/package/source.rb
@@ -0,0 +1,3 @@
+class Gem::Package::Source # :nodoc:
+end
+
diff --git a/lib/rubygems/package/tar_reader/entry.rb b/lib/rubygems/package/tar_reader/entry.rb
index 7034e59210..737c7639c6 100644
--- a/lib/rubygems/package/tar_reader/entry.rb
+++ b/lib/rubygems/package/tar_reader/entry.rb
@@ -129,6 +129,8 @@ class Gem::Package::TarReader::Entry
     ret
   end
 
+  alias readpartial read # :nodoc:
+
   ##
   # Rewinds to the beginning of the tar file entry