Update to RubyGems 1.3.0 r1891

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19547 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 7 insertions, 7 deletions

diff --git a/lib/rubygems/package/tar_reader.rb b/lib/rubygems/package/tar_reader.rb
index 8359399207..4aa9c26cc9 100644
--- a/lib/rubygems/package/tar_reader.rb
+++ b/lib/rubygems/package/tar_reader.rb
@@ -46,17 +46,17 @@ class Gem::Package::TarReader
       yield entry
 
       skip = (512 - (size % 512)) % 512
+      pending = size - entry.bytes_read
 
-      if @io.respond_to? :seek then
+      begin
         # avoid reading...
-        @io.seek(size - entry.bytes_read, IO::SEEK_CUR)
-      else
-        pending = size - entry.bytes_read
-
+        @io.seek pending, IO::SEEK_CUR
+        pending = 0
+      rescue Errno::EINVAL, NameError
         while pending > 0 do
-          bread = @io.read([pending, 4096].min).size
+          bytes_read = @io.read([pending, 4096].min).size
           raise UnexpectedEOF if @io.eof?
-          pending -= bread
+          pending -= bytes_read
         end
       end