From: Martin Hansen <mail@...>
Date: 2010-08-17T23:38:01+09:00
Subject: Making File.open work on gzipped files

Hello all,

I am trying to write a class for a file parser with an class method for
opening files for reading:

class Parser
  def self.open
    ios    = File.open(*args)
    parser = self.new(ios)

    if block_given?
      begin
        yield parser
      ensure
        ios.close
      end

      return true
    else
      return parser
    end
  end
end


This works nicely, but I would like it to work on gzipped files too.

I was thinking about checking the file type using a system call ->
`file`.match("gzip") and if that is true then possibly using popen with
"|gzip -f". But I have no idea how to get that working in this block
context?

Cheers,


Martin
 - possibly by detecting the file type using `file` - and then somehow
modify
-- 
Posted via http://www.ruby-forum.com/.