From: Chris Morris <chrismo@...>
Date: 2001-01-02T06:44:42+09:00
Subject: [ruby-talk:8478] popen on .rb file in 95

Apparently, Win95 does not support file associations from the command line.
The following fails on Win95:


  require 'runit/testcase'
  require 'runit/cui/testrunner'

  class POpenTest < RUNIT::TestCase
    def setup
      tmpdir=ENV['TMPDIR']||ENV['TMP']||ENV['TEMP']||'/tmp'
      @testfilename = tmpdir + '/testfile.rb'
      @testoutput = 'blargh'
      testfile = File.new(@testfilename, File::CREAT|File::TRUNC|File::RDWR)
      testfile << 'print "' + @testoutput + '"'
      testfile.close
    end

    def teardown
      File.delete(@testfilename)
    end

    def testpopen
      f = IO.popen(@testfilename)
      # f = IO.popen('ruby ' + @testfilename) -- this works
      assert_equal(@testoutput, f.read)
    end
  end

  RUNIT::CUI::TestRunner.run(POpenTest.suite)


... even though .rb files are associated to ruby.exe. I can execute a .rb
file from Explorer (double-click) or from the Start|Run... dialog. But from
the command line (DOS box), it shrugs its shoulders.

First question, does anyone know a way to get this to work in 95? I assume
it's Just The Way It Is.

Second question, what's a good workaround? One thought I'd had was to add
code to check for a shebang #! at the top of the file and explicitly execute
that in the popen call.

What I'm shooting for is a way to get .rb files to be executed as a cgi
program on 95 -- I don't want to hardcode ruby as the executioner(? <g>) to
allow for other cgi source.


Chris