# coding: utf-8
=begin

 * 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 Ralph Amissah All Rights Reserved.

 * License: GPL 3 or later:

   SiSU, a framework for document structuring, publishing and search

   Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
   2007 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/copyleft/gpl.html>

   <http://www.jus.uio.no/sisu/gpl.fsf/toc.html>
   <http://www.jus.uio.no/sisu/gpl.fsf/doc.html>
   <http://www.jus.uio.no/sisu/gpl.fsf/plain.txt>

 * 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.jus.uio.no/sisu/SiSU/download.html>

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

 ** Description: system environment, resource control and configuration details

=end
module SiSU_book_index
  class Book_index
    def initialize(data)
      @data=data
    end
    def indexing_song
      @rgx_idx=/#{Mx[:idx_o]}(?:.+?)#{Mx[:idx_c]}\s*/
      #@rgx_idx=/\s*#{Mx[:idx_o]}(?:.+?)#{Mx[:idx_c]}\s*/
      @rgx_idx_ocn_init=/#{Mx[:idx_o]}(.+?)#{Mx[:idx_c]}\s*#{Mx[:id_o]}~(\d+)\S+?#{Mx[:id_c]}/
      @rgx_idx_ocn=/(.+?)~(\d+)/
      @data=extract_book_index(@data)
      @data=clean_index(@data)
      @data
    end
    def extract_book_index(data)
      tuned_file=[]
      idx_array=[]
      data.each do |para|
        idx_array << @rgx_idx_ocn_init.match(para)[0].gsub(@rgx_idx_ocn_init,'\1~\2') if para =~ @rgx_idx_ocn_init
        tuned_file << para if para
      end
      #idx_array.each do |i|
      #  i.gsub!(@rgx_idx_ocn_init,'\1~\2')
      #end
      idx_array=construct_idx_array(idx_array) if idx_array.length > 0
      if idx_array.length > 0
        the_idx=construct_book_index(idx_array)
        screen_print(the_idx)
      end
      tuned_file
    end
    def construct_idx_array(idx_array)
      idx_lst=[]
      idx_array.each do |idx|
        idx_list,ocn=@rgx_idx_ocn.match(idx)[1,2]
        idx_lst <<=if idx_list =~/;/
          g=idx_list.scan(/[^;]+/)
          idxl=[]
          g.each do |i|
            idxl << { :rough_idx => i, :ocn => ocn }
          end
          idxl
        else { :rough_idx => idx_list, :ocn => ocn }
        end
      end
      idx_lst.flatten!
      idx_lst
    end
    def construct_book_index(idx_array)
      @the_idx={}
      idx_array.each do |idx|
        idx_lst=idx[:rough_idx].scan(/[^|:]+/)
        if idx_lst[0] =~/.+?\+\d+/
          use,plus=/(.+?)\+(\d+)/.match(idx_lst[0])[1,2]
        else use=idx_lst[0]
        end
        @the_idx[use]={} unless @the_idx[use] and defined? @the_idx[use]
        idx_lst.each do |i|
          i.strip!
          i,r=/(.+?)\+(\d+)/.match(i)[1,2] if i =~/.+?\+\d+/
          x=if idx_lst.length == 1 or idx_lst[0] == i
            @the_idx[use]['a1']=[] unless @the_idx[use]['a1'] and defined? @the_idx[use]['a1']
            x=if r
              @the_idx[use]['a1'] << { :ocn => idx[:ocn], :range => "#{idx[:ocn]}-#{idx[:ocn].to_i+r.to_i}" }
              "#{i} #{idx[:ocn]}-#{idx[:ocn].to_i+r.to_i}"
            else
              @the_idx[use]['a1'] << { :ocn => idx[:ocn] }
              "#{i} #{idx[:ocn]}"
            end
          else
            @the_idx[use]['b1']={} unless @the_idx[use]['b1'] and defined? @the_idx[use]['b1']
            @the_idx[use]['b1'][i]=[] unless @the_idx[use]['b1'][i] and defined? @the_idx[use]['b1'][i]
            x=if r
              @the_idx[use]['b1'][i] << { :ocn => idx[:ocn], :range => "#{idx[:ocn]}-#{idx[:ocn].to_i+r.to_i}" }
              "#{idx_lst[0]}:#{i} #{idx[:ocn]}-#{idx[:ocn].to_i+r.to_i}"
            else
              @the_idx[use]['b1'][i] << { :ocn => idx[:ocn] }
              "#{idx_lst[0]}:#{i} #{idx[:ocn]}"
            end
          end
        end
      end
      the_idx=@the_idx.sort
      #p the_idx; p '-----'
      the_idx
    end
    def screen_print(the_idx)
      the_idx.each do |i|
        i.each do |x|
          if x.class == String
            print "\n" + x + ', '
          elsif x.class == Array
            p 'array error? -->'
            print x
          elsif x.class == Hash
            if x['a1'].class == Array
              x['a1'].each do |a|
                if a[:range]
                  print a[:range] + ', '
                elsif a[:ocn]
                  print a[:ocn] + ', '
                else p 'error'
                end
              end
            end
            if x['b1']
              m=x['b1']
              m=m.sort
              m.each do |k,y|
                if k !~/a1/
                  print "\n\t" + k + ', '
                  #p y
                  y.each do |z|
                    if z[:range]
                      print z[:range] + ', '
                    elsif z[:ocn]
                      print z[:ocn] + ', '
                    else p 'error'
                    end
                  end
                end
              end
            end
          end
        end
      end
    end
    def clean_index(data)
      tuned_file=[]
      data.each do |para|
        para.gsub!(/\n*#{@rgx_idx}/m,'')
        tuned_file << para
      end
      tuned_file
    end
  end
end

__END__