From: James Cowlishaw <james@...>
Date: 2009-06-04T23:41:28+09:00
Subject: Re: rubyscript2exe problem

The Higgs bozo wrote:
> 
> http://www.ruby-forum.com/topic/170355
> 
> http://letmegooglethatforyou.com/?q=rubyscript2exe+modify+frozen+string

This fix is not reliable; assignment to $0 doesn't reallocate it's 
buffer, hence the new string may be truncated.

Try this in a file test.rb:

  10.times do
    $0 = $0 + "."
    puts "#{$0} (#{$0.size})"
  end

You'll see the output:

  >ruby test.rb
  test.rb. (8)
  test.rb.. (9)
  test.rb... (10)
  test.rb.... (11)
  test.rb.... (11)
  test.rb.... (11)
  test.rb.... (11)
  test.rb.... (11)
  test.rb.... (11)
  test.rb.... (11)
  >Exit code: 0

The fix is to alias $0:

  $progname = $0
  alias $PROGRAM_NAME $0
  alias $0 $progname

  10.times do
    $0 = $0 + "."
    puts "#{$0} (#{$0.size})"
  end

The output is then correct:

  >ruby test.rb
  test.rb. (8)
  test.rb.. (9)
  test.rb... (10)
  test.rb.... (11)
  test.rb..... (12)
  test.rb...... (13)
  test.rb....... (14)
  test.rb........ (15)
  test.rb......... (16)
  test.rb.......... (17)
  >Exit code: 0


See http://github.com/cowlibob/rubyscript2exe for the complete fixed 
script.

Cowlibob.

-- 
Posted via http://www.ruby-forum.com/.