gen_readme.rb

#! /usr/bin/env ruby

require 'pathname'

$VERBOSE=nil

def indent s, n = 2
  ws = ' ' * n
  s.gsub %r/^/, ws 
end

template = IO::read 'README.tmpl'

samples = ''
prompt = '~ > '

Dir['sample*/*'].sort.each do |sample|
  samples << "\n" << "  <========< #{ sample } >========>" << "\n\n"

  cmd = "cat #{ sample }" 
  samples << indent(prompt + cmd, 2) << "\n\n" 
  samples << indent(`#{ cmd }`, 4) << "\n" 

  cmd = "ruby #{ sample }" 
  #samples << indent(prompt + cmd, 2) << "\n\n" 

  cmd = "ruby -e'STDOUT.sync=true; exec %(ruby -Ilib #{ sample })'" 
  out = `#{ cmd } 2>&1`
  #samples << indent(`#{ cmd } 2>&1`, 4) << "\n" 

  exitstatus = " #=> exitstatus=#{ $?.exitstatus }"
  cmd = "ruby #{ sample }" 
  samples << indent(prompt + cmd + exitstatus, 2) << "\n\n" 
  samples << indent(out, 4) << "\n" 

  #samples << indent("\n#{ prompt } #{ $?.exitstatus } ### exitstatus\n")
end

#samples.gsub! %r/^/, '  '

readme  = template.gsub %r/^\s*@samples\s*$/, samples
open('README', 'w'){|fd| fd.write readme}
print readme