#!/usr/bin/ruby

DOCUMENTATION = <<DOCEND

A help script to build a Smalltalk/X jv-branch (mainly) on a Jenkins CI. 

If no TARGET is given, invokes target `jenkins:job`.

DOCEND

require 'optparse'

def run()

  optparse = OptionParser.new do | opts |

    opts.banner = "Usage: #{$0} [TARGET1 [TARGET1 [...]]\n"

    opts.on('-p', '--project PROJECT', "PROJECT to build. Overrides project specified by the environment variable.") do | value |

      ENV['PROJECT'] = value

      self.class.const_set('PROJECT', value)  

    end

    opts.on('-a', '--arch ARCH', "Arcitecture to build for. Overrides project specified by the environment variable.") do | value |

      ENV['ARCH'] = value

      self.class.const_set('ARCH', value)  

    end

    opts.on(nil, '--help', "Prints this message") do

      puts DOCUMENTATION

      puts optparse.help()

      exit 0

    end

  end

  optparse.parse!

  # If run outside a Jenkins build environment (such as from a command line), 

  # define some variables to make it look more like a proper  Jenkins build 

  # environment. 

  ENV['WORKSPACE'] ||= '.'

  ENV['BUILD_NUMBER'] ||= Time.now.strftime("%Y%m%d")

  ENV['JOB_NAME'] ||= 'interactive'

  # If no target is given, run target jenkins:job

  if ARGV.size == 0 then

    ARGV << 'jenkins:job'

  end

  # When run under Jenkins, we do want to see full backtrace if something

  # fails. 

  ARGV << '--trace'

  require 'rake'

  Rake.application.run

end

run if __FILE__ == $0