1 files changed, 99 insertions, 0 deletions
diff --git a/lib/rubygems/package/tar_reader/entry.rb b/lib/rubygems/package/tar_reader/entry.rb
new file mode 100644
index 0000000000..dcc66153d8
--- /dev/null
+++ b/lib/rubygems/package/tar_reader/entry.rb
@@ -0,0 +1,99 @@
+#++
+# Copyright (C) 2004 Mauricio Julio Fern�ndez Pradier
+# See LICENSE.txt for additional licensing information.
+#--
+
+require 'rubygems/package'
+
+class Gem::Package::TarReader::Entry
+
+  attr_reader :header
+
+  def initialize(header, io)
+    @closed = false
+    @header = header
+    @io = io
+    @orig_pos = @io.pos
+    @read = 0
+  end
+
+  def check_closed # :nodoc:
+    raise IOError, "closed #{self.class}" if closed?
+  end
+
+  def bytes_read
+    @read
+  end
+
+  def close
+    @closed = true
+  end
+
+  def closed?
+    @closed
+  end
+
+  def eof?
+    check_closed
+
+    @read >= @header.size
+  end
+
+  def full_name
+    if @header.prefix != "" then
+      File.join @header.prefix, @header.name
+    else
+      @header.name
+    end
+  end
+
+  def getc
+    check_closed
+
+    return nil if @read >= @header.size
+
+    ret = @io.getc
+    @read += 1 if ret
+
+    ret
+  end
+
+  def directory?
+    @header.typeflag == "5"
+  end
+
+  def file?
+    @header.typeflag == "0"
+  end
+
+  def pos
+    check_closed
+
+    bytes_read
+  end
+
+  def read(len = nil)
+    check_closed
+
+    return nil if @read >= @header.size
+
+    len ||= @header.size - @read
+    max_read = [len, @header.size - @read].min
+
+    ret = @io.read max_read
+    @read += ret.size
+
+    ret
+  end
+
+  def rewind
+    check_closed
+
+    raise Gem::Package::NonSeekableIO unless @io.respond_to? :pos=
+
+    @io.pos = @orig_pos
+    @read = 0
+  end
+
+end
+