* lib/rubygems: Update to RubyGems master 6a3d9f9. Changes include:

  Compatibly renamed Gem::DependencyResolver to Gem::Resolver.

  Added support for git gems in gem.deps.rb and Gemfile.

  Fixed resolver bugs.

* test/rubygems: ditto.

* lib/rubygems/LICENSE.txt:  Updated to license from RubyGems trunk.
  [ruby-trunk - Bug #9086]

* lib/rubygems/commands/which_command.rb:  RubyGems now indicates
  failure when any file is missing.  [ruby-trunk - Bug #9004]

* lib/rubygems/ext/builder:  Extensions are now installed into the
  extension install directory and the first directory in the require
  path from the gem.  This allows backwards compatibility with msgpack
  and other gems that calculate full require paths.
  [ruby-trunk - Bug #9106]



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43714 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 65 insertions, 0 deletions

diff --git a/lib/rubygems/util.rb b/lib/rubygems/util.rb
new file mode 100644
index 0000000000..e862458d21
--- /dev/null
+++ b/lib/rubygems/util.rb
@@ -0,0 +1,65 @@
+module Gem::Util
+  ##
+  # Zlib::GzipReader wrapper that unzips +data+.
+
+  def self.gunzip(data)
+    require 'zlib'
+    require 'rubygems/util/stringio'
+    data = Gem::StringSource.new data
+
+    unzipped = Zlib::GzipReader.new(data).read
+    unzipped.force_encoding Encoding::BINARY if Object.const_defined? :Encoding
+    unzipped
+  end
+
+  ##
+  # Zlib::GzipWriter wrapper that zips +data+.
+
+  def self.gzip(data)
+    require 'zlib'
+    require 'rubygems/util/stringio'
+    zipped = Gem::StringSink.new
+    zipped.set_encoding Encoding::BINARY if Object.const_defined? :Encoding
+
+    Zlib::GzipWriter.wrap zipped do |io| io.write data end
+
+    zipped.string
+  end
+
+  ##
+  # A Zlib::Inflate#inflate wrapper
+
+  def self.inflate(data)
+    require 'zlib'
+    Zlib::Inflate.inflate data
+  end
+
+  ##
+  # This calls IO.popen where it accepts an array for a +command+ (Ruby 1.9+)
+  # and implements an IO.popen-like behavior where it does not accept an array
+  # for a command.
+
+  def self.popen *command
+    begin
+      r, = IO.popen command
+    rescue TypeError # ruby 1.8 only supports string command
+      r, w = IO.pipe
+
+      pid = fork do
+        STDIN.close
+        STDOUT.reopen w
+
+        exec(*command)
+      end
+
+      w.close
+
+      Process.wait pid
+
+      r
+    end
+
+    r.read
+  end
+
+end