#! /usr/bin/ruby1.9.1
# encoding: utf-8
#SiSU: copyright (C) 1997 - 2012 Ralph Amissah; License GPL, see appended program information
begin
  def ruby_version_ok?(base_version)
    @v ||=RUBY_VERSION.scan(/\d+/)
    vb=base_version.scan(/\d+/)
    if @v[0].to_i <  vb[0].to_i \
    or @v[0].to_i == vb[0].to_i \
    && @v[1].to_i <  vb[1].to_i \
    or @v[0].to_i == vb[0].to_i \
    && @v[1].to_i == vb[1].to_i \
    && @v[1].to_i <  vb[2].to_i
      raise "Please, use Ruby#{vb} or later, current Ruby #{RUBY_VERSION}"
    else check_incompatible_ruby_build?
    end
  end
  def check_incompatible_ruby_build?
    require 'rbconfig'
    e=Config::CONFIG
    if RUBY_VERSION == '1.9.2' \
    && e['PATCHLEVEL'].to_i < 180
      raise <<WOK
There are known issues with early versions of ruby1.9.2.
Please, use Ruby 1.9.2p180 or later,
current version #{e['RUBY_PROGRAM_VERSION']}p#{e['PATCHLEVEL']}
#{%x{ruby -v}.strip.to_s}

WOK
    end
  end
  def check_sisu_legacy_ruby_version?
    rbv_sisu_legacy='1.9.2' #'1.8.7'
    ruby_version_ok?(rbv_sisu_legacy)
  end
  def check_sisu_stable_ruby_version?
    rbv_sisu_stable='1.9.2'
    ruby_version_ok?(rbv_sisu_stable)
  end
  def check_sisu_dev_ruby_version?
    rbv_sisu_dev='1.9.2'
    ruby_version_ok?(rbv_sisu_dev)
  end
  $VERBOSE=nil
  $KCODE='u' if RUBY_VERSION < '1.9'
  argv=$*
  SiSU_version_dir=case argv.inspect
  when /--v2/
    check_sisu_legacy_ruby_version?
    'v2'
  when /--v3/
    check_sisu_stable_ruby_version?
    'v3'
  when /--dev/
    check_sisu_dev_ruby_version?
    'v3' #'v3dv'
  else
    check_sisu_stable_ruby_version?
    'v3'
  end
  SiSU_lib="sisu/#{SiSU_version_dir}"
  require "#{SiSU_lib}/hub"
rescue
  STDERR.puts 'ERROR'
  STDERR.puts $!
  STDERR.puts $@
  require 'rbconfig'
  e=Config::CONFIG
  puts %{
                   #{%x{ruby -v}.strip.to_s}
                   #{RUBY_VERSION}
    ruby version:  #{e['RUBY_PROGRAM_VERSION']}p#{e['PATCHLEVEL']}
    ruby named:    #{e['ruby_version']}
    rubylib:       #{e['rubylibdir']}
    rubylib local: #{e['sitelibdir']}
  }
  system(%{echo "
    system RUBYPATH: ${RUBYPATH}
    system RUBYLIB: ${RUBYLIB}
  "})
  puts %{
    On a Debian system to switch the version of ruby to >=1.9.2 see:
      http://wiki.debian.org/Ruby
  }
end
__END__

 * Name: SiSU

 * Description: a framework for document structuring, publishing and search

 * Author: Ralph Amissah

 * Copyright: (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
   2007, 2008, 2009, 2010, 2011, 2012 Ralph Amissah, All Rights Reserved.

 * License: GPL 3 or later:

   SiSU, a framework for document structuring, publishing and search

   Copyright (C) Ralph Amissah

   This program is free software: you can redistribute it and/or modify it
   under the terms of the GNU General Public License as published by the Free
   Software Foundation, either version 3 of the License, or (at your option)
   any later version.

   This program is distributed in the hope that it will be useful, but WITHOUT
   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
   more details.

   You should have received a copy of the GNU General Public License along with
   this program. If not, see <http://www.gnu.org/licenses/>.

   If you have Internet connection, the latest version of the GPL should be
   available at these locations:
   <http://www.fsf.org/licensing/licenses/gpl.html>
   <http://www.gnu.org/licenses/gpl.html>

   <http://www.sisudoc.org/sisu/en/manifest/gpl.fsf.html>

 * SiSU uses:
   * Standard SiSU markup syntax,
   * Standard SiSU meta-markup syntax, and the
   * Standard SiSU object citation numbering and system

 * Hompages:
   <http://www.jus.uio.no/sisu>
   <http://www.sisudoc.org>

 * Download:
   <http://www.sisudoc.org/sisu/en/SiSU/download.html>

 * Ralph Amissah
   <ralph@amissah.com>
   <ralph.amissah@gmail.com>