lib/io_streams/gzip/writer.rb in iostreams-0.8.2 vs lib/io_streams/gzip/writer.rb in iostreams-0.9.0

@@ -1,11 +1,11 @@
 module IOStreams
   module Gzip
     class Writer
       # Write to a file / stream, compressing with GZip
       def self.open(file_name_or_io, _=nil, &block)
-        unless file_name_or_io.respond_to?(:write)
+        unless IOStreams.writer_stream?(file_name_or_io)
           Zlib::GzipWriter.open(file_name_or_io, &block)
         else
           begin
             io = Zlib::GzipWriter.new(file_name_or_io)
             block.call(io)
@@ -15,6 +15,6 @@
         end
       end
 
     end
   end
-end
\ No newline at end of file
+end