#!/usr/bin/env ruby
=begin
 * Name: modify.rb
 * Author: Ralph Amissah
   * http://www.jus.uio.no/sisu
   * http://www.jus.uio.no/sisu/SiSU/download
 * Description: Conversion script from kdissert .kdi to sisu markup .sst
 * Copyright (C) 2004, 2006 Ralph Amissah
 * Packaged with: SiSU information Structuring Universe -
     Structured information, Serialized Units
 * SiSU Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Ralph Amissah

 * License: GPL 3 or later

  Summary of GPL 3

  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, write to the Free Software Foundation, Inc.,
  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA

  If you have Internet connection, the latest version of the GPL should be
  available at these locations:
    http://www.fsf.org/licenses/gpl.html
    http://www.gnu.org/copyleft/gpl.html
    http://www.jus.uio.no/sisu/gpl3.fsf

  © Ralph Amissah 1997, current 2006.
  All Rights Reserved.

 * Ralph Amissah: ralph@amissah.com
                  ralph.amissah@gmail.com
=end
require 'rexml/document'
include REXML
argv=$*
@sisu,@sisu_base=Array.new,Array.new
unless argv.empty?
  argv.each do |kdi|
    if kdi =~/\.kdi$/
      system("cp #{kdi} #{kdi}.tar.gz && tar xzvf #{kdi}.tar.gz && rm #{kdi}.tar.gz")
      file=File.new("maindoc.xml")
      #system("cp #{kdi} /tmp/. && cd /tmp && tar xzvf /tmp/#{kdi} && cd -")
      #file=File.new("/tmp/maindoc.xml")
      @output=File.new("#{kdi}.sst",'w')
      doc=Document.new(file)
      root=doc.root
      @el=Array.new
      root.each do |x|
      end
      root.each_with_index do |content,idx|
        if root.elements["item[#{idx}]/summary"]
          id,ma,ch=nil,nil,Array.new
          if root.elements["item[#{idx}]/id"]
            id=root.elements["item[#{idx}]/id"].text.to_i
          end
          if root.elements["item[#{idx}]/parent"]
            ma=root.elements["item[#{idx}]/parent"].text.to_s
          end
          if root.elements["item[#{idx}]/child"] #problem only get one child, even where several
            root.get_elements("item[#{idx}]/child").each do |x|
              ch << x.text
            end
          end
          if root.elements["item[#{idx}]/summary"]
            sum=root.elements["item[#{idx}]/summary"].text.to_s.strip
          end
          if root.elements["item[#{idx}]/text"]
            txt=root.elements["item[#{idx}]/text"].text.to_s.strip
          end
          @el[id]=Hash.new
          @el[id][:id]=id
          @el[id][:ma]=ma
          @el[id][:ch]=ch
          @el[id][:sum]=sum
          @el[id][:txt]=txt
          if ma == '-1'
            @el[id][:lev]=':A'
            @top=id
          end
        end
      end
      @doc=Array.new
      @title=@el[@top][:sum]
      p @el[@top][:sum]
      @doc << ':A~ ' + @el[@top][:sum]
      @el[@top][:ch].each do |x|
        @el[x.to_i][:lev]='1'
        @doc << '1~ ' + @el[x.to_i][:sum]
        @doc << @el[x.to_i][:txt]
        @el[x.to_i][:ch].each do |y|
          @el[y.to_i][:lev]='2'
          @doc << '2~ ' + @el[y.to_i][:sum]
          @doc << @el[y.to_i][:txt]
          @el[y.to_i][:ch].each do |z|
            @el[z.to_i][:lev]='3'
            @doc << '3~ ' + @el[z.to_i][:sum]
            @doc << @el[z.to_i][:txt]
            @el[z.to_i][:ch].each do |za|  #unsupported... consder
              @el[za.to_i][:lev]='4'
              @doc << '!_ ' + @el[za.to_i][:sum]
              @doc << @el[za.to_i][:txt]
            end
          end
        end
      end
      #@el.each_with_index do |x,i|
      #  if x: puts "#{i}: lev: #{x[:lev]}, id: #{x[:id]}, ma: #{x[:ma]}, ch: #{x[:ch].join(',')}"
      #  end
      #end
# regexs strip most kdissert markup, and provide minimal info for sisu markup -->
      @doc.each do |c,idx|
        c.gsub!(/<\/summary>/,'')
        c.gsub!(/<html>.+?\n|<\/body>|<\/html>|<p>/m,'')
        c.gsub!(/<\/p>/,"\n")
        c.gsub!(/<span style="font-weight:600">(.+?)<\/span>/," *{ \\1 }* ")
        c.gsub!(/<span style="text-decoration:underline">(.+?)<\/span>/," _{ \\1 }_ ")
        c.gsub!(/<span style="font-style:italic">(.+?)<\/span>/," /{ \\1 }/ ")
        c.gsub!(/<ul type="disc">/,'_* ')
        c.gsub!(/<\S+?>/,'')
        c.gsub!(/&lt;(:p[bn])&gt;/,"<\\1>")
        c.gsub!(/&lt;&lt;(|.?|@|.?|)/,"<<\\1")
        c.gsub!(/&quot;/,'"')
        c.gsub!(/ \s+/,' ')
        @sisu_base << c.strip + "\n\n"
      end
    else puts ".kdi extension expected, filename not recognised: << #{kdi} >>"
    end
  end
else puts '.kdi file for conversion to sisu expected'
end
sisu_head=<<WOK
% converted from Kdissert to SiSU

@title: #@title

@prefix: Kdissert mind/topic mapping auto conversion to SiSU markup

@links: {Kdissert}http://freehackers.org/~tnagy/kdissert/

@base_program: kdissert

% @date:

@rcs: $Id$

@level: num_top=1

WOK
#puts @sisu_base
@output << sisu_head << @sisu_base
__END__