gistfile1.rb

#!/usr/bin/env ruby

require 'logger/colors'

class MultiLogger
    def initialize(*targets)
        @targets = targets
    end

    %w(debug info warn error fatal unknown).each do |m|
        define_method(m) do |*args|
            @targets.map { |t| t.send(m, *args) }
        end
    end
end

def capture_io
    require 'stringio'
  
    # clone whats there currently 
    orig_stdout, orig_stderr         = $stdout, $stderr
  
    # open new io objects
    captured_stdout, captured_stderr = StringIO.new, StringIO.new
  
    # reassign stdout and stderr to new io streams
    $stdout, $stderr                 = captured_stdout, captured_stderr
  
    # yield back to caller so that block uses redirected streams
    yield
  
    # now return the captured stdout and stderr
    return captured_stdout.string, captured_stderr.string
ensure

    # put that thing back where you found it or so help me
    $stdout = orig_stdout
    $stderr = orig_stderr
end


logpath = '/Users/mike/Documents/quick_scripts'
logfile = "#{logpath}/#{File.basename($0)}.log"


stderr_log = Logger.new(STDERR)
file_log = Logger.new(logfile)

stderr_log.level = Logger::INFO
stderr_log.formatter = proc { |severity, datetime, progname, msg|
    "#{datetime} - #{severity} [#{caller[8]}] #{msg}\n"
}

file_log.level = Logger::DEBUG
file_log.formatter = proc { |severity, datetime, progname, msg|
    "#{datetime} - #{severity} [#{caller[8]}] #{msg}\n"
}


$logger = MultiLogger.new( stderr_log, file_log )

$logger.debug( "#{$0} - PID #{$$} - Logger is active" )
$logger.debug( "Invoked with options:[#{$*}] - Logger is active" )



puts 'before capturing'


s_output, e_output = capture_io {
    puts "stuff inside a block1"
    puts "stuff inside a block2"
    puts "stuff inside a block3"
    puts "stuff inside a block4"
    puts "stuff inside a block5"

    $stderr.puts "stderr stuff inside a block1"
    $stderr.puts "stderr stuff inside a block2"
    $stderr.puts "stderr stuff inside a block3"
}

puts "phew, done being redirected"

$logger.debug( "Standard Output should go here #{s_output}" )
$logger.debug( "Standard error should go here #{e_output}" )