From: Wybo Dekker <wybo@...4all.nl>
Date: 2012-04-24T17:39:45+09:00
Subject: Re: gem-packed script with DATA section does not work

On 2012-04-23 22:57, Peter Zotov wrote:
> Ryan Davis писал 23.04.2012 22:58:
>> On Apr 23, 2012, at 04:49 , Wybo Dekker wrote:
>>
>>> That's clear, but does that mean there's no workaround?
>>> Can Ruby not be told that the DATA section is somewhere else?
>>
>> This is my ((slightly?) horrible) workaround:
>>
>> data = File.read(__FILE__).split(/__END__/).last
> 
> This is better:
> data = File.read(__FILE__).split(/__END__/, 2).last

That's great, thanks Peter, Ryan.
But it needs a correction, because the script is now also split on the
__END__ in the "data =..." line itself, so it needs a ^:

data = File.read(__FILE__).split(/^__END__/, 2).last

And Ryan's ,2 can be skipped if one wants more than one subsection in
the DATA section. Here's my test script, including the idea of using it
for erb templates:

#!/usr/bin/env ruby
require 'optparse'
require 'erb'

name = 'Unknown'
OptionParser.new do |opt|
    opt.on('-n','--name=STRING',String,
               'set the name'
          )  do |v| name = v end
end.parse!
data1,data2 = File.read(__FILE__).
                   split(/^__END__/)[1..-1].
                   map { |x| ERB.new(x).result(binding) }
puts '',"data1: #{data1}", '',"data2: #{data2}"
__END__
Hello <%= name %>
This is data 1, two lines.
__END__
This is data 2,
3 lines,
including this one.

-- 
Wybo