# coding: utf-8
=begin

 * Name: SiSU

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

 * Author: Ralph Amissah

 * Copyright: (C) 1997 - 2009 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/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_numbering
  class Numbering
    def initialize(md,data)
      @md,@data=md,data
    end
    def numbering_song
      data=@data
      data=number_plaintext_para(data)
      data=name_endnote_seg(data) #tr issue
      data=auto_number_heading_ie_title(data) #tr issue
      data=ocn(data) #watch
      data=minor_numbering(data)
      data=name_para_seg_filename(data)
      data=set_heading_seg(data) unless @md.set_heading_seg
      data=set_heading_top(data) unless @md.set_heading_top
      data=set_header_title(data) unless @md.set_header_title
      data
    end
    def number_plaintext_para(data)
      @tuned_file=[]
      data.each do |para|
        if para !~/#{Mx[:gr_o]}(?:code|group|alt|poem|verse)#{Mx[:gr_c]}|#{Mx[:gr_o]}Th|#{Mx[:tc_o]}#{Mx[:tc_p]}#{Mx[:tc_p]}/
          para.gsub!(/(.+)\n/,'\1 ') #messy, but idea is that tables should retain breaks
        end
        para.gsub!(/^/,"\n") unless para =~/#{Mx[:tc_p]}/u
        para.gsub!(/^\s+|\s$/,"\n")
        @tuned_file << para
      end
      @tuned_file=@tuned_file.flatten
    end
    def name_endnote_seg(data)
      tuned_file=data
      if @md.flag_auto_endnotes \
      and @md.flag_separate_endnotes_make
        tuned_file << "\n#{Mx[:lv_o]}4:endnotes#{Mx[:lv_c]}Endnotes #{Mx[:gl_o]}-##{Mx[:gl_c]} #{Mx[:id_o]}~0;0:0;u0#{Mx[:id_c]}"
      end
      tuned_file << "\n#{Mx[:br_endnotes]}" #DECIDE ON
      tuned_file=tuned_file.flatten
    end
    def owner_details_seg
      data << "#{Mx[:lv_o]}4:owner.details#{Mx[:lv_c]}Owner Details"
    end
    def number_sub_heading(para,num,title_no)
      case para
      when /#{Mx[:lv_o]}#{num}:-#{Mx[:lv_c]}/;  para.gsub!(/#{Mx[:lv_o]}#{num}:-#{Mx[:lv_c]}/,"#{title_no} ")
      when /^#{Mx[:lv_o]}#{num}:##{Mx[:lv_c]}/; para.gsub!(/^#{Mx[:lv_o]}#{num}:##{Mx[:lv_c]}/,"#{title_no} ")
      when /^#{Mx[:lv_o]}#{num}:[a-z_\.]+#{Mx[:lv_c]}/
        para.gsub!(/^#{Mx[:lv_o]}#{num}:([a-z_\.]+)#{Mx[:lv_c]}\s*(.+)/i,%{#{Mx[:lv_o]}#{num}:\\1#{Mx[:lv_c]} #{title_no} \\2  #{Mx[:fa_o]}:name##{title_no}#{Mx[:fa_c]}})
      when /^#{Mx[:lv_o]}#{num}:#{Mx[:lv_c]}\s*#{title_no}/
        para.gsub!(/^#{Mx[:lv_o]}#{num}:#{Mx[:lv_c]}/,"#{Mx[:lv_o]}#{num}:#{title_no}#{Mx[:lv_c]}")                #where title contains title number
      else para.gsub!(/^#{Mx[:lv_o]}#{num}:#{Mx[:lv_c]}/,"#{Mx[:lv_o]}#{num}:#{title_no}#{Mx[:lv_c]} #{title_no} ") #main, where title number is to be provided
      end
      if @md.toc_lev_limit \
      and @md.toc_lev_limit < num
        para.gsub!(/^#{Mx[:lv_o]}[5-9]:\S*?#{Mx[:lv_c]}/,'!_ ') #bold line, watch
      end
      para
    end
    def auto_number_heading_ie_title(data)                                             #also does some segment naming
      @tuned_file=[]
      if @md.markup =~/num_top/ \
      or @md.num_top # watch, 2003w23
        input="#{@md.markup}"[/num_top\=([1-6])/,1] if @md.markup
        input||=@md.num_top if @md.num_top !~/^$/
      end
      num_top=input.to_i
      t_no1=t_no2=t_no3=t_no4=0
      no1=num_top; no2=(num_top + 1); no3=(num_top + 2);  no4=(num_top + 3)
      t_not=0
      data.each do |para| #@md.seg_names << [additions to segment names]
        if (@md.markup =~/num_top/ \
        or (@md.num_top \
        and @md.num_top !~/^$/)) \
        and para !~/^#{Rx[:meta]}/
          if (para =~/^(?:#{no1}|^#{no2}|^#{no3}#{no4})~#/ \
          and para !~/^#{Mx[:lv_o]}4:endnotes#{Mx[:lv_c]}/)
            t_not+=1 #; t_no2=0; t_no3=0
            para.gsub!(/^(#{Mx[:lv_o]}(?:#{no1}|#{no2}|#{no3}|#{no4})):#(#{Mx[:lv_c]})/,"\\1:ps#{t_not}\\2")
          end
          if para =~/#{Mx[:lv_o]}#{no1}:/
            @subnumber=1
            @subnumber=0 if para =~/#{Mx[:lv_o]}#{no1}:/
          end
          if para =~/^#{Mx[:lv_o]}[1-6]:[\w-]*#{Mx[:lv_c]}/ \
          and para !~ /(?:#{Mx[:lv_o]}[1-6]:[\w-]+-#{Mx[:lv_c]}|#{Mx[:lv_o]}4:endnotes#{Mx[:lv_c]}|^#{Mx[:lv_o]}[1-6]:[a-z_\.]+#{Mx[:lv_c]}\s*[\d.]+)\s/ \
          and para !~/#{Mx[:fa_o]}(?:~#|-#)#{Mx[:fa_c]}/
            if para =~/^#{Mx[:lv_o]}#{no1}:/
              t_no1+=1; t_no2=0; t_no3=0
              title_no="#{t_no1}"
              if not @md.seg_names.nil? \
              and not @md.seg_names.include?(title_no)
                para.gsub!(/^#{Mx[:lv_o]}#{no1}:#{Mx[:lv_c]}\s*(\S+)#/,"#{Mx[:lv_o]}#{no1}:#{title_no}#{Mx[:lv_c]} \\1 #{title_no} ") #shift placement of auto-number to after first word, e.g. Article # not # Article, added on occasion of ABF (20040329)
                para.gsub!(/^#{no1}\{\s+(Article|Clause|Section)\s+#/i,%{#{no1}~#{title_no} \\1 #{title_no}. })
                unless para =~/^#{Mx[:lv_o]}#{no1}:#{Mx[:lv_c]}\s*[\d.]+\s/ #fix -> if the title starts with a numbering scheme, do not auto-number, review
                  para.gsub!(/^#{Mx[:lv_o]}#{no1}:#{Mx[:lv_c]}/,"#{Mx[:lv_o]}#{no1}:#{title_no}#{Mx[:lv_c]}#{title_no}. ")
                end
                @md.seg_names << title_no
              #else puts "warning segment name #{title_no} already exists"
              end
              unless para =~/^#{Mx[:lv_o]}#{no1}:([a-z_\.]+)#{Mx[:lv_c]}\s*[A-Z]\.?\s/ #bug -> tmp fix, excludes A. B. C. lettering, but not roman numerals, is arbitrary, review required
                para.gsub!(/^#{Mx[:lv_o]}#{no1}:([a-z_\.]+)#{Mx[:lv_c]}\s*(.+)/i,
                  %{#{Mx[:lv_o]}#{no1}:\\1#{Mx[:lv_c]}#{title_no}. \\2 #{Mx[:fa_o]}:name##{title_no}#{Mx[:fa_c]}})
              end
              para.gsub!(/^#{Mx[:lv_o]}#{no1}:##{Mx[:lv_c]}/,"#{title_no}. ") #watch
              para.gsub!(/^#{no1}~#\s*/,"#{title_no}. ")
            end
            if para =~/^#{Mx[:lv_o]}#{no2}:\S*?#{Mx[:lv_c]}/
              t_no2+=1; t_no3=0
              title_no="#{t_no1}.#{t_no2}"
              para=number_sub_heading(para,no2,title_no)
            end
            if para =~/^#{Mx[:lv_o]}#{no3}:\S*?#{Mx[:lv_c]}/
              t_no3+=1
              title_no="#{t_no1}.#{t_no2}.#{t_no3}"
              para=number_sub_heading(para,no3,title_no)
            end
          elsif para =~/^#{Mx[:lv_o]}[1-6]:[\w-]+-#{Mx[:lv_c]}/ # endnotes, watch2005
            para.gsub!(/^#{Mx[:lv_o]}#{no1}:([a-z_\.]+)-#{Mx[:lv_c]}/,"#{Mx[:lv_o]}#{no1}:\\1#{Mx[:lv_c]}") #"#{no1}~\\1 ")
            para.gsub!(/^#{Mx[:lv_o]}#{no2}:([a-z_\.]+)-#{Mx[:lv_c]}/,"#{Mx[:lv_o]}#{no2}:\\1#{Mx[:lv_c]}")
            para.gsub!(/^#{Mx[:lv_o]}#{no3}:([a-z_\.]+)-#{Mx[:lv_c]}/,"#{Mx[:lv_o]}#{no3}:\\1#{Mx[:lv_c]}")
          end
        elsif @md.markup =~/num_extract/ #AS DANGEROUS force enable with document, note already does this type of numbering for cisg, locate and coordinate logic, is currently misplaced in code, chengwei inspired 2004w23/4
          if para =~/^#{Mx[:lv_o]}[1-9]:#{Mx[:lv_c]}([\d\.]+)/ #risky (must be unique) consider output to 4~~\d instead of 4~\d
            name_num=$1
            para.gsub!(/^#{Mx[:lv_o]}([1-9]:)#{Mx[:lv_c]}/,"#{Mx[:lv_o]}\\1#{name_num}#{Mx[:lv_c]}")
          end
          if @md.toc_lev_limit
          end
        end
        @tuned_file << para
      end
      @tuned_file=@tuned_file.flatten
    end
    def ocn(data)                                                                      #and auto segment numbering increment
      @tuned_file=[]
      object_array=SiSU_document_structure::OCN.new(@md,data).ocn
      object_array.each do |o|
        @tuned_file <<= if o.ocn; "#{o.txt} #{Mx[:id_o]}~#{o.ocn};#{o.lv};#{o.type}#{Mx[:id_c]}" #main ocn descriptor
        else o.txt
        end
      end
      @tuned_file=@tuned_file.flatten
    end
    def minor_numbering(data)                                                          #and auto segment numbering increment
      @tuned_file=[]
      number_small,letter_small=0,0
      letter=%w( a b c d e f g h i j k l m n o p q r s t u v w x y z )
      data.each do |para|
        if para =~/\w|\S|<|\(/
          if para !~/^%% |#{Rx[:meta]}|^0~|^#{Mx[:lv_o]}endnotes:|^4~endnotes|^<\/center>|<:ee>|<:e[:_]>|^\^~ |<:e[:_]\d+?>|^#{Mx[:fa_o]}:p[bn]#{Mx[:fa_c]}|^<:\#|<:- |<[:!]!4|#{Mx[:gr_o]}(?:alt|code|group|poem|table)#{Mx[:gr_c]}|^(?:alt|code|group|poem|table)\{|^\}(?:alt|code|group|poem|table)|^\}table$|<table|<\/table>|<td|<\/td>|<th|<\/th>|<tr>|<\/tr>|<hr width|<:4-endnotes>|\[endnotes\]|<:zz>|<:isbn-|<:journal-|<:conference-|#{Mx[:br_endnotes]}/i #ocn here #&nbsp; added with Tune.code #¡
            if para=~/^#{Mx[:lv_o]}[1-9]:\S*?#{Mx[:lv_c]}/; number_small,letter_small=0,0                    #% sub-number system, (baby numbering) reset with any change of major number (more obviously should be placed in number titles, but that is conditionally executed, check and move later)
            end
            if para =~/^#[ 1]/
              letter_small=0
              number_small=0 if para =~ /^#1/
              number_small+=1
              para.gsub!(/^#[ 1]/,"#{number_small}. ") #change 2004
            end
            if para =~/^_# /
              para.gsub!(/^_# /,"#{Mx[:fa_o]}:i1#{Mx[:fa_c]} #{letter[letter_small]}. ") #change 2004
              letter_small+=1
            end
          end
        end
        @tuned_file << para
      end
      @tuned_file=@tuned_file.flatten
    end
    def name_para_seg_filename(data)
      # paragraph name/numbering rules
      # manual naming overrides, manual naming may be
      #   alpha-numeric characters mixed,
      #   numeric only (a number), if
      #     all segments have been named,
      #     the numbers used are over 1000 or
      #     it is  not minded that auto-numbering uses a funny scheme for naming segments (not yet implemented)
      #       [for now a warning is printed for such documents on use of maintenance or very-verbose flag]
      # auto-naming takes the form of giving numbers to segments
      # the rules for which are as follows
      #   if the title/heading text starts with a numeric, then that is used (1 3.1 3rd etc.)
      #   otherwise the level 4 segment number from the embedded document structure info is used
      #   if there is none a sequential number is designated, preceded by an underscore
      @tuned_file=[]
      art_filename_auto=1
      @counter=1
      @unique_auto_name=[]
      if not @md.seg_autoname_safe and @md.cmd =~/[MV]/
        puts 'manual segment names, numbers used as names, risk warning (segmented html)'
      end
      data.each do |para|
        para=SiSU_document_structure::Structure.new(@md,para).structure_markup
        if para =~/^#{Mx[:lv_o]}[456]:#{Mx[:lv_c]}/
          if para=~/^#{Mx[:lv_o]}[4]:#{Mx[:lv_c]}/ \
          and not @md.set_heading_seg
            @md.set_heading_seg=true
          end
          if para =~/^#{Mx[:lv_o]}[456]:#{Mx[:lv_c]}(?:\s*\S+)?\s+([\d.,:-]+)/m #heading starts with a recognised numeric or word followed by a recognised numerical construct, use that as name
            pattern=$1
            pattern.gsub!(/(?:[:,-]|\W)/,'.')
            pattern.gsub!(/\.$/,'')
            if not @md.seg_names.nil? \
            and not @md.seg_names.include?(pattern)
              para.gsub!(/^#{Mx[:lv_o]}([456]):#{Mx[:lv_c]}/,"#{Mx[:lv_o]}\\1:#{pattern}#{Mx[:lv_c]}")
              @md.seg_names << pattern
            else puts 'warn, there may be a conflicting numbering scheme' if @md.cmd =~/[VM]/
            end
          end
          if para =~/^#{Mx[:lv_o]}4:#{Mx[:lv_c]}.+?;4:(\d+);/m #extract segment name from embedded document structure info
            pattern=$1
            pattern.gsub!(/(?:[:,-]|\W)/,'.')
            pattern.gsub!(/\.$/,'')
            if not @md.seg_names.nil? \
            and not @md.seg_names.include?(pattern)
              para.gsub!(/^#{Mx[:lv_o]}(4:)#{Mx[:lv_c]}/,"#{Mx[:lv_o]}\\1#{pattern}#{Mx[:lv_c]}")
              @md.seg_names << pattern
            else
              para.gsub!(/^#{Mx[:lv_o]}(4:)#{Mx[:lv_c]}/,"#{Mx[:lv_o]}\\1~#{pattern}#{Mx[:lv_c]}")
              @md.seg_names << "~#{pattern}"
            end
          end
          if para =~/^#{Mx[:lv_o]}4:#{Mx[:lv_c]}/ #if still not segment name, provide a numerical one
            if not @md.seg_names.nil? \
            and not @md.seg_names.include?(art_filename_auto)
              para.gsub!(/^#{Mx[:lv_o]}(4:)#{Mx[:lv_c]}/,%{#{Mx[:lv_o]}\\1~#{art_filename_auto}#{Mx[:lv_c]}})
              @md.seg_names << art_filename_auto
            else puts 'segment name (numbering) error'
            end
            art_filename_auto+=1
          end
        end
        @tuned_file << if para =~/^#{Mx[:lv_o]}([1-6]):\S*?#{Mx[:lv_c]}/m \
        and (@md.pagenew or @md.pagebreak)
          m=$1 #watch ref~
          para_tmp=[]
          if @md.pagenew.inspect =~/#{m}/;           para_tmp << "#{Mx[:br_page_new]}\n" << para
          elsif @md.pagebreak.inspect =~/#{m}/;         para_tmp << "#{Mx[:br_page]}\n" << para
          end
          para_result=unless para_tmp.length > 0; para
          else                       para_tmp
          end
        else                         para
        end
      end
      if @md.seg_names.length > 0
        @md.set_heading_seg=true
      end
      @tuned_file=@tuned_file.flatten
    end
    def set_heading_top(data)                                                         #% make sure no false positives
      unless @md.set_heading_top
        puts "\tdocument contains no top level heading, (will have to manufacture one)" if @md.cmd =~/[MV]/
        @tuned_file=[]
        data.each do |para|
          unless @md.set_heading_top
            if para !~/^(?:#{Rx[:meta]}|@\S+:|0~\S+)\s/m \
            and para !~/\A\s*\Z/m
              @md.set_heading_top=true
              head=if @md.title ; "#{Mx[:lv_o]}1:#{Mx[:lv_c]} #{@md.title}"
              else                "#{Mx[:lv_o]}1:#{Mx[:lv_c]} [no title provided]"
              end
              @tuned_file << head
            end
          end
          @tuned_file << para
        end
        @tuned_file=@tuned_file.flatten
      end
    end
    def set_heading_seg(data)                                                          #% make sure no false positives
      unless @md.set_heading_seg
        puts "\tdocument contains no segment level, (will have to manufacture one)" if @md.cmd =~/[MV]/
        @tuned_file=[]
        data.each do |para|
          unless @md.set_heading_seg
            if para !~/^(?:#{Rx[:meta]}|#{Mx[:lv_o]}[123]:\S*?#{Mx[:lv_c]})/m \
            and para !~/\A\s*\Z/m \
            and para !~/#{Mx[:br_page]}|#{Mx[:br_page_new]}/
              @md.set_heading_seg=true
              head=if @md.title ; "#{Mx[:lv_o]}4:seg#{Mx[:lv_c]} [#{@md.title}]"
              else                "#{Mx[:lv_o]}4:seg#{Mx[:lv_c]} [segment]"
              end
              @tuned_file << head
            end
          end
          @tuned_file << para
        end
        @tuned_file=@tuned_file.flatten
      end
    end
    def set_header_title(data)                                                         #% make sure no false positives
      unless @md.set_header_title
        puts "\t no document title provided, (will have to manufacture one)" if @md.cmd =~/[MV]/
        @tuned_file=[]
        data.each do |para|
          unless @md.set_header_title
            if para !~/^%{1,2}\s/m \
            and para !~/\A\s*\Z/m
              @tuned_file << "#{Mx[:meta_o]}title#{Mx[:meta_c]} #{@md.heading_seg_first}"
              @md.title=@md.heading_seg_first
              @md.set_header_title=true
            end
          end
          @tuned_file << para
        end
        @tuned_file=@tuned_file.flatten
      end
    end
  end
end
__END__