-*- mode: org -*-
#+TITLE:       sisu sst
#+DESCRIPTION: documents - structuring, various output representations & search
#+FILETAGS:    :sisu:sst:
#+AUTHOR:      Ralph Amissah
#+EMAIL:       [[mailto:ralph.amissah@gmail.com][ralph.amissah@gmail.com]]
#+COPYRIGHT:   Copyright (C) 2015 - 2021 Ralph Amissah
#+LANGUAGE:    en
#+STARTUP:     content hideblocks hidestars noindent entitiespretty
#+OPTIONS:     H:3 num:nil toc:t \n:nil @:t ::t |:t ^:nil _:nil -:t f:t *:t <:t
#+PROPERTY:    header-args  :exports code
#+PROPERTY:    header-args+ :noweb yes
#+PROPERTY:    header-args+ :eval no
#+PROPERTY:    header-args+ :results no
#+PROPERTY:    header-args+ :cache no
#+PROPERTY:    header-args+ :padline no
#+PROPERTY:    header-args+ :mkdirp yes

* sst_from_xml.rb

#+HEADER: :tangle "../lib/sisu/sst_from_xml.rb"
#+BEGIN_SRC ruby
#<<sisu_document_header>>
module SiSU_sstFromXML
  require_relative 'se'                                 # se.rb
  class Convert
    begin
      require 'rexml/document'
        include REXML
    rescue LoadError
      SiSU_Utils::CodeMarker.new(__LINE__,__FILE__,:fuchsia).
        error('rexml/document NOT FOUND (LoadError)')
    end
    def initialize(opt)
      @opt=opt
      @sisu,@sisu_base=[],[]
      @ver=SiSU_Env::InfoVersion.instance.get_version
    end
    def tell(filename,type)
      SiSU_Screen::Ansi.new(
        @opt.act[:color_state][:set],
        "XML #{type} to SiSU sst",
        "#{filename} --> #{filename}.sst"
      ).green_hi_blue
    end
    def read
      xml_to_sisu
    end
    def markup_head(text)
      text.strip!
      text.gsub!(/(?:\s*\n|\s\s+)/,' ')
      text.gsub!(/<header class=['"]\S+?['"]>(.+?)<\/header>/,'\1')
      text.gsub!(/<(\w+)>(.+?)<\/\w+>/,'@\1: \2')
      text.gsub!(/<header class=['"]\S+?['"]><(\w+)>(.+?)<\/\w+><\/header>/,'@\1: \2')
      text.gsub!(/\s +/,' ')
      text.strip!
      text + "\n\n"
    end
    def markup(text)
      text.strip!
      text.gsub!(/(?:\s*\n|\s\s+)/,' ')
      text.gsub!(/<text class='h1'>(.+?)<\/text>/,':A~ \1')
      text.gsub!(/<text class='h2'>(.+?)<\/text>/,':B~ \1')
      text.gsub!(/<text class='h3'>(.+?)<\/text>/,':C~ \1')
      text.gsub!(/<text class='h4'>(.+?)<\/text>/,'1~ \1')
      text.gsub!(/<text class='h5'>(.+?)<\/text>/,'2~ \1')
      text.gsub!(/<text class='h6'>(.+?)<\/text>/,'3~ \1')
      text.gsub!(/<text class='norm'>(.+?)<\/text>/,'\1')
      text.gsub!(/<endnote symbol='norm'>(.+?)<\/endnote>/,'~{ \1 }~')
      text.gsub!(/<br ?\/>/,'<br>')
      text.gsub!(/<i>(.+?)<\/i>/,'/{\1}/')
      text.gsub!(/<b>(.+?)<\/b>/,'*{\1}*')
      text.gsub!(/<u>(.+?)<\/u>/,'_{\1}_')
      text.gsub!(/<sem:([a-z_]+)\s+depth=['"]zero['"]>(\s*.+?\s*)<\/sem:\1>/,';{ \2 };\1')
      text.gsub!(/<sem:([a-z_]+)\s+depth=['"]one['"]>(\s*.+?\s*)<\/sem:\1>/,':{ \2 }:\1')
      text.gsub!(/<sem:([a-z_]+)\s+depth=['"]many['"]>(\s*.+?\s*)<\/sem:\1>/,'\1:{ \2 }:\1')
      text.gsub!(/<sem:([a-z_]+)>(\s*.+?\s*)<\/sem:\1>/,'\1:{ \2 }:\1')
      text.gsub!(/\s +/,' ')
      text.strip!
      text + "\n\n"
    end
    def sax
      out_file=File.new(@output_file_name,'w')
      head=@doc.root.get_elements('//head/header')
      body=@doc.root.get_elements('//object/text')
      out_file.puts "% SiSU text #{@ver.version} (generated from a SiSU XML markup representation)\n\n"
      head.each do |x|
        if x.name=='header'
          head=markup_head(x.to_s)
          out_file.puts head
        end
      end
      body.each do |x|
        if x.name=='text'
          body=markup(x.to_s)
          out_file.puts body
        end
      end
    end
    def node
      sax
    end
    def dom
      raise "#{__FILE__}::#{__LINE__} xml dom representation to sst not yet implemented (experimental simple xml representations sax and node to sst are in place)."
    end
    def xml_to_sisu
      unless @opt.files.empty?
        @opt.files.each do |xml|
          @sisu_base=[]
          if xml =~/\.sx[sdn]\.xml$/
            begin
              @doc_str=IO.readlines(xml,'').join("\n")
              @output=File.new("#{xml}.sst",'w')
              @doc=REXML::Document.new(@doc_str)
              @output_file_name="#{Dir.pwd}/#{xml}.sst"
              @el=[]
            rescue REXML::ParseException
            end
          end
          if xml =~/\.sxs\.xml$/
            unless @opt.act[:quiet][:set]==:on
              tell(xml,'sax')
            end
            sax
          elsif xml =~/\.sxd\.xml$/
            unless @opt.act[:quiet][:set]==:on
              tell(xml,'dom')
            end
            dom
          elsif xml =~/\.sxn\.xml$/
            unless @opt.act[:quiet][:set]==:on
              tell(xml,'node')
            end
            node
          else puts "filename not recognised: << #{xml} >>"
          end
          @output << @sisu_base
        end
      else puts '.xml file for conversion to sisu expected'
      end
      puts @opt.files.inspect
    end
  end
end
__END__
#+END_SRC

* sst_to_s_xml_sax.rb

#+HEADER: :tangle "../lib/sisu/sst_to_s_xml_sax.rb"
#+BEGIN_SRC ruby
#<<sisu_document_header>>
module SiSU_SimpleXML_ModelSax
  require_relative 'se_hub_particulars'                 # se_hub_particulars.rb
    include SiSU_Particulars
  require_relative 'dp'                                 # dp.rb
    include SiSU_Param
  require_relative 'se'                                 # se.rb
    include SiSU_Env
  require_relative 'ao_doc_str'                         # ao_doc_str.rb
  require_relative 'xml_shared'                         # xml_shared.rb
    include SiSU_XML_Munge
  require_relative 'shared_sem'                         # shared_sem.rb
  require_relative 'xml_format'                         # xml_format.rb
    include SiSU_XML_Format
  require_relative 'rexml'                              # rexml.rb
    include SiSU_Rexml
  @@alt_id_count=0
  @@tablefoot=''
  class Convert
    @@fns=nil
    def initialize(opt)
      @opt=opt
      @particulars=SiSU_Particulars::CombinedSingleton.instance.get_env_md(opt)
    end
    def read
      begin
        @md=@particulars.md #bug, relies on info persistence, assumes -m has previously been run
        @env=@particulars.env
        SiSU_Screen::Ansi.new(
          @opt.act[:color_state][:set],
          'invert',
          'XML SAX',
          "#{@md.fns} -> #{@md.fn[:sxs]}"
        ).colorize unless @opt.act[:quiet][:set]==:on
        if (@opt.act[:verbose_plus][:set]==:on \
        || @opt.act[:maintenance][:set]==:on)
          SiSU_Screen::Ansi.new(
            @opt.act[:color_state][:set],
            @opt.fns,
            "#{Dir.pwd}/#{@md.fn[:sxs]}"
          ).flow
        end
        unless @@fns==@opt.fns
          @@fns=@opt.fns
          @@fns_array=[]
        end
        @fns_array=if @@fns_array.empty?; read_fnm
        else @@fns_array.dup #check
        end
        SiSU_SimpleXML_ModelSax::Convert::Songsheet.new(@fns_array,@particulars).songsheet
      rescue
        SiSU_Errors::Rescued.new($!,$@,@opt.cmd,@opt.fns).location do
          __LINE__.to_s + ':' + __FILE__
        end
      ensure #file closed in songsheet
      end
    end
    def read_fnm
      ao=[]
      if FileTest.file?("#{Dir.pwd}/#{@opt.fns}")
        ao=IO.readlines("#{Dir.pwd}/#{@opt.fns}","\n\n")
      else STDERR.puts 'Error'
      end
    end
    private
    class Songsheet
      def initialize(data,particulars)
        @data,@particulars,@env,@md=data,particulars,particulars.env,particulars.md
      end
      def songsheet
        begin
          SiSU_SimpleXML_ModelSax::Convert::Scroll.new(@data,@particulars).songsheet
          if (@md.opt.act[:verbose][:set]==:on \
          || @md.opt.act[:verbose_plus][:set]==:on \
          || @md.opt.act[:maintenance][:set]==:on)
            SiSU_SimpleXML_ModelSax::Convert::Tidy.new(@md,@env).xml # test wellformedness, comment out when not in use
          end
          SiSU_Rexml::Rexml.new(@md,@md.fn[:sxs]).xml if @md.opt.act[:maintenance][:set]==:on # test rexml parsing, comment out when not in use #debug
        rescue
          SiSU_Errors::Rescued.new($!,$@,@md.opt.cmd,@md.fns).location do
            __LINE__.to_s + ':' + __FILE__
          end
        ensure
        end
      end
    end
    class Scroll
      require_relative 'txt_shared'                     # txt_shared.rb
      require_relative 'css'                            # css.rb
        include SiSU_TextUtils
      @@xml={ body: [], open: [], close: [], head: [] }
      def initialize(data='',particulars='')
        @data,@env,@md=data,particulars.env,particulars.md
        @regx=/^(?:#{Mx[:mk_o]}:p[bn]#{Mx[:mk_c]}\s*)?(?:#{Mx[:lv_o]}[1-9]:(\S*)#{Mx[:lv_c]})?(.+)/
        @tab="\t"
        if @md
          @trans=SiSU_XML_Munge::Trans.new(@md)
        end
        @sys=SiSU_Env::SystemCall.new
      end
      def songsheet
        pre
        markup
        post
        publish
      end
    protected
      def embedded_endnotes(para='')
        para.gsub!(/~\{(.+?)\}~/,'<endnote symbol="norm">\1</endnote> ')
        para.gsub!(/~\[([*+])\s+(.+?)\]~/,'<endnote symbol="\1">\2</endnote> ')
      end
      def xml_head(meta)
        txt=meta.text
        txt.gsub!(/\/{(.+?)}\//,'<i>\1</i>')
        txt.gsub!(/[*!]{(.+?)}[*!]/,'<b>\1</b>')
        txt.gsub!(/_{(.+?)}_/,'<u>\1</u>')
        txt.gsub!(/-{(.+?)}-/,'<del>\1</del>')
        txt.gsub!(/<br(?: \/)?>/,'<br />')
        txt.gsub!(/ & /,' and ')
        @@xml[:head] <<<<WOK
#{@tab}<header class="#{meta.attrib}">
#{@tab*2}<#{meta.el}>
#{@tab*3}#{txt}
#{@tab*2}</#{meta.el}>
#{@tab}</header>
WOK
      end
      def xml_sc(md='')
        sc=if @md.sc_info
          <<WOK
    <source_control>
      <sc class="sourcefile">
        #{@md.sc_filename}
      </sc>
      <sc class="number">
        #{@md.sc_number}
      </sc>
      <sc class="date">
        #{@md.sc_date}
      </sc>
    </source_control>
WOK
        else ''
        end
        @@xml[:sc]=sc
      end
      def xml_structure(para='',lv='',hname='') #extracted endnotes
        lv=lv.to_i
        lv=nil if lv==0
        embedded_endnotes(para)
        if para[@regx]
          paragraph="#{para[@regx,2]}"
          util=SiSU_TextUtils::Wrap.new(paragraph,70)
          wrapped=util.line_wrap
        end
        @@xml[:body] << "#{@tab*0}<object>" if para[@regx]
        @@xml[:body] << "#{@tab*1}" << "\n" if para[@regx]
        @@xml[:body] << if lv; %{#{@tab*1}<text class="h#{lv}">\n#{@tab*2}#{wrapped}\n#{@tab*1}</text>\n} << "\n"
        elsif wrapped =~/\A%%?\s+/; %{<!--\n#{@tab*1}<text class="comment">\n#{@tab*2}#{wrapped}\n#{@tab*1}</text>\n-->\n} # comments
        else                        %{#{@tab*1}<text class="norm">\n#{@tab*2}#{wrapped}\n#{@tab*1}</text>\n} # main text, contents, body KEEP
        end
        @@xml[:body] << "#{@endnotes}" if @endnotes # main text, endnotes KEEP
        @@xml[:body] << "#{@tab*0}</object>" << "\n" if para[@regx]
        @endnotes=[]
      end
      def block_structure(para='')
        para.gsub!(/<:block(?:-end)?>/,'')
        para.strip!
        @@xml[:body] << %{#{@tab*0}<object>}
        @@xml[:body] << %{#{@tab*1}<text class="block">#{@tab*1}\n}
        @@xml[:body] << %{#{@tab*2}#{para}#{@tab*1}\n}
        @@xml[:body] << %{#{@tab*1}</text>\n}
        @@xml[:body] << "#{@tab*0}</object>"
      end
      def group_structure(para='')
        para.gsub!(/<:group(?:-end)?>/,'')
        para.strip!
        @@xml[:body] << %{#{@tab*0}<object>}
        @@xml[:body] << %{#{@tab*1}<text class="group">#{@tab*1}\n}
        @@xml[:body] << %{#{@tab*2}#{para}#{@tab*1}\n}
        @@xml[:body] << %{#{@tab*1}</text>\n}
        @@xml[:body] << "#{@tab*0}</object>"
      end
      def poem_structure(para='')
        para.gsub!(/<:verse(?:-end)?>/,'')
        para.strip!
        @@xml[:body] << %{#{@tab*0}<object>}
        @@xml[:body] << %{#{@tab*1}<text class="verse">#{@tab*1}\n}
        @@xml[:body] << %{#{@tab*2}#{para}#{@tab*1}\n}
        @@xml[:body] << %{#{@tab*1}</text>\n}
        @@xml[:body] << "#{@tab*0}</object>" << "\n"
      end
      def code_structure(para='')
        para.gsub!(/<:code(?:-end)?>/,'')
        para.strip!
        @@xml[:body] << %{#{@tab*0}<object>}
        @@xml[:body] << %{#{@tab*1}<text class="code">#{@tab*1}\n}
        @@xml[:body] << %{#{@tab*2}#{para}#{@tab*1}\n}
        @@xml[:body] << %{#{@tab*1}</text>\n}
        @@xml[:body] << "#{@tab*0}</object>" << "\n"
      end
      def table_structure(table='') #tables
        @@xml[:body] << %{#{@tab*0}<object>}
        @@xml[:body] << %{#{@tab*1}#{table}\n#{@tab*1}\n} # unless lv  # main text, contents, body KEEP
        @@xml[:body] << "#{@tab*0}</object>" << "\n" #if para[@regx]
        @endnotes=[]
      end
      def tidywords(wordlist)
        wordlist.each do |x|
          x.gsub!(/&/,'&amp;') unless x =~/&\S+;/
        end
      end
      def xml_clean(para)
        para.gsub!(/#{Mx[:gl_o]}[1-9]:\S*?#{Mx[:gl_c]}/,'') #Danger, watch
        para
      end
      def markup
        data=[]
        xml_sc(@md)
        @endnotes,@level,@cont,@copen,@xml_contents_close=[],[],[],[],[]
        @rcdc=false
        (0..6).each { |x| @cont[x]=@level[x]=false }
        (4..6).each { |x| @xml_contents_close[x]='' }
        @data.each do |para|
          data << SiSU_AO_DocumentStructureExtract::Structure.new(@md,para).structure #takes on Mx marks
        end
        data.each do |para|
          if para !~/^\s*(?:%+ |<:code>)/
            if @md.sem_tag and para =~/[:;]\{|\}[:;]/
              para=@trans.xml_semantic_tags(para)
            end
            if para =~/[:;]\{|\}[:;]/
              para=SiSU_Sem::Tags.new(para,@md).rm.all
            end
          end
          para=@trans.markup_light(para)
          @trans.char_enc.utf8(para) if @sys.locale =~/utf-?8/i #% utf8
          para.gsub!(/^@(\S+?):/,"#{Mx[:lv_o]}@\\1#{Mx[:lv_c]}")
          if para =~/\A#{Mx[:lv_o]}@(\S+?)#{Mx[:lv_c]}\s*(.+?)\Z/m # for headers
            d_meta=SiSU_TextUtils::HeaderScan.new(@md,para).meta
            if d_meta; xml_head(d_meta)
            end
          end
          para='' if para=~/#{Mx[:lv_o]}@\S+?#{Mx[:lv_c]}/
          if @rcdc==false \
          and (para =~/~metadata/ or para =~/^1~meta\s+Document Information/)
            @rcdc=true
          end
          if para !~/(^@\S+?:|^\s*$|<ENDNOTES>|<EOF>)/
            @sto=SiSU_text_parts::SplitTextObject.new(@md,para).lev_segname_para
            unless @rcdc
              SiSU_XML_Format::FormatScroll.new(@md,@sto.text) if @sto.format =~/i[1-9]|ordinary/
              case @sto.format
              when /^(1):(\S*)/
                xml_clean(para)
                xml_structure(para,$1,$2)
                para=@sto.lev_para_ocn.heading_body1
              when /^(2):(\S*)/
                xml_clean(para)
                xml_structure(para,$1,$2)
                para=@sto.lev_para_ocn.heading_body2
              when /^(3):(\S*)/
                xml_clean(para)
                xml_structure(para,$1,$2)
                para=@sto.lev_para_ocn.heading_body3
              when /^(4):(\S*)/ # work on see SplitTextObject
                xml_clean(para)
                xml_structure(para,$1,$2)
                para=@sto.lev_para_ocn.heading_body4
              when /^(5):(\S*)/
                xml_clean(para)
                xml_structure(para,$1,$2)
                para=@sto.lev_para_ocn.heading_body5
              when /^(6):(\S*)/
                xml_clean(para)
                xml_structure(para,$1,$2)
                para=@sto.lev_para_ocn.heading_body6
              else
                if para =~ /<:verse>/
                  para=poem_structure(para)
                elsif para =~ /<:group>/
                  para=group_structure(para)
                elsif para =~ /<:code>/
                  para.gsub!(/</,'&lt;')
                  para.gsub!(/>/,'&gt;')
                  para=code_structure(para)
                elsif para =~/<!Th?.+/ # tables come as single block #work area 2005w13
                  table=SiSU_Tables::TableXML.new(para)
                  para=table.table_split
                  para=table_structure(para)
                else xml_structure(para,nil,nil)
                end
              end
              if para =~/<a name="n\d+">/ \
              and para =~/^(-\{{2}~\d+|<!e[:_]\d+!>)/ # -endnote
                para=''
              end
              if para =~/.*<:#>.*$/
                para=case para
                when /<:i1>/
                  format_text=FormatTextObject.new(para,'')
                  format_text.scr_inden_ocn_e_no_paranum
                when /<:i2>/
                  format_text=FormatTextObject.new(para,'')
                  format_text.scr_inden_ocn_e_no_paranum
                end
              end
              if para =~/<:center>/
                one,two=/(.*)<:center>(.*)/.match(para)[1,2]
                format_text=FormatTextObject.new(one,two)
                para=format_text.center
              end
            end
            para.gsub!(/<:\S+?>/,'')
            para.gsub!(/<!.+!>/,'') ## Clean Prepared Text #bugwatch reinstate
            para
          end
          para
        end
        6.downto(4) do |x|
          y=x - 1; v=x - 3
          @@xml[:body] << "#{@tab*5}</content>\n#{@tab*y}</contents#{v}>\n" if @level[x]==true
        end
        3.downto(1) do |x|
          y=x - 1
          @@xml[:body] << "#{@tab*y}</heading#{x}>\n" if @level[x]==true
        end
      end
      def pre
        rdf=SiSU_XML_Tags::RDF.new(@md)
        dir=SiSU_Env::InfoEnv.new
        @@xml[:head],@@xml[:body]=[],[]
        css=SiSU_Env::CSS_Select.new(@md).xml_sax
        encoding=if @sys.locale =~/utf-?8/i then '<?xml version="1.0" encoding="UTF-8" standalone="no"?>'
        else                                     '<?xml version="1.0" encoding="ISO-8859-1" standalone="no"?>'
        end
        @@xml[:open] =<<WOK
#{encoding}
<?xml-stylesheet type="text/css" href="../#{dir.path.style}/#{css}"?>
#{rdf.comment_xml_sax}
<document>
WOK
        @@xml[:head] << "<head>\n"
        @@xml[:body] << "<body>\n"
      end
      def post
        @@xml[:head] << @@xml[:sc]
        @@xml[:head] << "</head>\n"
        @@xml[:body] << "</body>\n"
        @@xml[:close] = "</document>\n"
      end
      def publish
        content=[]
        content << @@xml[:open] << @@xml[:head] << @@xml[:body] << @@xml[:metadata]
        content << @@xml[:owner_details] if @md.stmp =~/\w\w/
        content << @@xml[:tail] << @@xml[:close]
        Output.new(content.join,@md).xml
        @@xml={}
      end
    end
    class Output
      def initialize(data,md)
        @data,@md=data,md
      end
      def xml
        @sisu=[]
        @data.each do |para|
          para.gsub!(/<:\S+?>/,'')
          para.gsub!(/<!.+?!>/,'')
          para="#{para}\n" unless para.empty?
          @sisu << para
        end
        new_file_data=@sisu.join
        @sisu=new_file_data.scan(/.+/)
        SiSU_Env::FileOp.new(@md).mkdir
        filename_sxm=SiSU_Env::FileOp.new(@md,@md.fn[:sxs]).mkfile_pwd
        if filename_sxm.is_a?(File)
          @sisu.each {|para| filename_sxm.puts para}
          filename_sxm.close
        else puts 'file not created, is directory writable?'
        end
      end
    end
    class Tidy
      def initialize(md,dir)
        @md,@env=md,dir
        @prog=SiSU_Env::InfoProgram.new
      end
      def xml
        if @prog.tidy !=false #note values can be other than true
          if (@md.opt.act[:verbose_plus][:set]==:on \
          || @md.opt.act[:maintenance][:set]==:on)
            SiSU_Screen::Ansi.new(
              @md.opt.act[:color_state][:set],
              'invert',
              'Using XML Tidy',
              'check document structure'
            ).colorize unless @md.opt.act[:quiet][:set]==:on
            SiSU_Screen::Ansi.new(
              @md.opt.act[:color_state][:set],
              '',
              '',
              'check document structure'
            )
            tell.grey_open unless @md.opt.act[:quiet][:set]==:on
            tidyfile='/dev/null' #don't want one or screen output, check for alternative flags
            tidy =SiSU_Env::SystemCall.new("#{Dir.pwd}/#{@md.fn[:sxs]}",tidyfile)
            tidy.well_formed?
            tell.p_off unless @md.opt.act[:quiet][:set]==:on
          end
        end
      end
    end
  end
end
__END__
#+END_SRC

* sst_identify_markup.rb

#+HEADER: :tangle "../lib/sisu/sst_identify_markup.rb"
#+BEGIN_SRC ruby
#<<sisu_document_header>>
module SiSU_Markup
  class MarkupInform
    attr_accessor :version
    def initialize(version,message,declared_markup='',declared_type='')
      @version,@message,@declared_markup,@declared_type=version,message,declared_markup,declared_type
    end
    def version
      @version
    end
    def message
      @message
    end
    def declared_version
      @declared_markup
    end
    def declared_type
      @declared_type
    end
    def history
      MarkupHistory.new(@version).query
    end
  end
  class MarkupIdentify
    def initialize(opt)
      @opt=opt
      @description='This is a script attempts to identify the version of markup used in SiSU (and provides information on changes in markup)'
    end
    def help
    print <<WOK

#{@description}

WOK
      exit
    end
    def identify
      f=@opt.fns
      if f =~/(?:\.sst|\.ssm|\.ssi|\.s[123])$/ \
      and File.exist?(f)
        file=File.open(f,'r')
        cont=file.readlines
        file.close
        links,oldlinks='',''
        markup=nil
        @declared_type,@declared_markup='[text?]',''
        if cont[0] =~ /^(?:%\s+)?SiSU\s+(text|master|insert)\s+([0-9](?:\.[0-9]+){1,2})/ \
        or cont[0] =~ /^(?:%\s+)?sisu-([0-9](?:\.[0-9]+){1,2})/
          @declared_type,@declared_markup=$1,$2
        elsif cont[0] =~ /^(?:%\s+)?SiSU\s+([0-9](?:\.[0-9]+){1,2})/ \
        or cont[0] =~ /^(?:%\s+)?sisu-([0-9](?:\.[0-9]+){1,2})/
          @declared_markup=$1
        end
        @flag_2_0,@flag_1_0,@flag_69,@flag_66,@flag_57,@flag_38=false,false,false,false,false,false
        cont.each_with_index do |y,i|
          if y =~/^(?:0\{?~links?|@links?:)\s/ \
          and f =~/(?:\.sst|\.ssm|\.ssi|\.s[123])/
            links=unless y =~/\{.+?\}\S+/; oldlinks=' (pre 0.20.4 header links)'
            else ' (post 0.20.4 header links)'
            end
          end
          if @flag_2_0 \
          or y =~/^@make:|^@classify|^\s\s?:[a-z_-]+?:\s+\S/
            version=2.0.to_f
            markup=MarkupInform.new(version,'2.0' + oldlinks,@declared_markup,@declared_type)
            @flag_2_0=true
            break
          end
          unless @flag_38
            if (y =~/^:?A~/ and f =~/(?:\.sst|\.ssm|\.ssi)/)
              version='0.38'
              markup=MarkupInform.new(version,'0.38' + oldlinks,@declared_markup,@declared_type)
              @flag_38=true
            end
          end
          if @flag_38
            if @flag_1_0 \
            or y =~/^=\{.+?\}\s*$/
              version='0.69'
              markup=MarkupInform.new(version,'0.69' + oldlinks,@declared_markup,@declared_type)
              @flag_1_0=true
              break
            end
            if @flag_66 \
            or y =~/[a-z+][:;]\{.+?\}[:;][a-z+]/
              version='0.66'
              markup=MarkupInform.new(version,'0.66' + oldlinks,@declared_markup,@declared_type)
              @flag_66=true
              break
            end
          end
        end
        unless @flag_2_0 \
        or @flag_1_0 \
        or @flag_66
          cont.each_with_index do |y,i|
            if y =~/^(?:0\{?~links?|@links?:)\s/ \
            and f =~/(?:\.sst|\.ssm|\.ssi|\.s[123])/
              links=unless y =~/\{.+?\}\S+/; oldlinks=' (pre 0.20.4 header links)'
              else ' (post 0.20.4 header links)'
              end
            end
            if @flag_57 \
            or (y =~/^:?A~\?? @title/ and f =~/(?:\.sst|\.ssm|\.ssi)/)
              version='0.57'
              markup=MarkupInform.new(version,'0.57' + oldlinks,@declared_markup,@declared_type)
              @flag_57=true
              break
            end
            if @flag_38 \
            or (y =~/^:?A~/ and f =~/(?:\.sst|\.ssm|\.ssi)/)
              version='0.38'
              markup=MarkupInform.new(version,'0.38' + oldlinks,@declared_markup,@declared_type)
              @flag_38=true
              break if i >= 200
              if y =~ /(?:~{\*+|~\[\*|~\[\+)\s/
                version='0.42'
                markup=MarkupInform.new(version,'0.42' + oldlinks,@declared_markup,@declared_type)
                break
              end
            end
            if (y =~/^1~/ and f =~/(?:\.sst|\.ssm|\.ssi)/) \
            and not @flag_38
              version='0.37'
              markup=MarkupInform.new(version,'0.37 is substantially 0.16 - 0.36 markup with new file-extension' + oldlinks,@declared_markup,@declared_type)
              break
            end
            if y =~/^1~/ \
            and f =~/\.([rs])([123])/ \
            and not @flag_38
              t,n=$1,$2
              version='0.16'
              instruct=if t =~/r/
                " (change file extension from .#{t}#{n} to .ssm)"
              else " (change file extension from .#{t}#{n} to .sst)"
              end
              markup=MarkupInform.new(version,'0.16 - 0.36' + instruct + links,@declared_markup,@declared_type)
              break
            end
            if y =~/^0\{~/ \
            and not @flag_38
              version='0.1'
              markup=MarkupInform.new(version,'0.1 - 0.15',@declared_markup,@declared_type)
              break
            end
            if y =~/^0\{{3}/ \
            and not @flag_38
              markup=MarkupInform.new('circa. 1997','old, check date',@declared_markup,@declared_type)
              break
            end
            markup='Not a recognised file type '
          end
        end
        markup
      else MarkupHistory.new(@opt).help_query
      end
    end
    def determine_markup_version
      if @opt.fns.nil? \
      or @opt.fns.empty?
        MarkupHistory.new(@opt).help_identify
      end
      if File.exist?(@opt.fns)
        if @opt.fns =~/\.(?:sst|ssm|ssi|s[123i]|r[123])/
          markup=identify #(@opt.fns)
          if defined? markup.version
            unless @opt.act[:quiet][:set]==:on
              message=unless markup.declared_version.empty?
                "#{@opt.fns}\n  markup Type Declared as SiSU #{markup.declared_version} #{markup.declared_type}\n  appears to be SiSU #{markup.version}"
              else
                "Markup Type Appears to be SiSU #{markup.version}\n  in file #{@opt.fns}"
              end
              puts message
              puts %{"sisu --query-#{markup.version}" for a brief description of markup type}
            end
          end
        else puts 'file-type not recognised: ' + @opt.fns
        end
      else puts 'file not found: ' + @opt.fns
      end
      (defined? markup.version) \
      ? markup.version
      : 'markup type/version not determined'
    end
    def markup_version?
      if @opt.fns.empty?
        @opt.files.each do |fns|
          @opt.fns=fns
          determine_markup_version
        end
      else determine_markup_version
      end
    end
  end
  class MarkupHistory
    def initialize(opt)
      @opt=opt
    end
    def sisu_3_0
      <<WOK
  SiSU 3.0 same as 2.0, apart from change to headers

    see document markup samples, and sisu --help headers

WOK
    end
    def sisu_2_0
      <<WOK
  SiSU 2.0 same as 1.0, apart from the changing of headers and the addition of a monospace tag
    related headers now grouped, e.g.

    @title:
     :subtitle:

    @creator:
     :author:
     :translator:
     :illustrator:

    see document markup samples, and sisu --help headers

    the monospace tag takes the form of a has '#' \#{ this enclosed text would be monospaced }#

WOK
    end
    def sisu_1_0
      <<WOK
  SiSU 1.0 same as 0.69

WOK
    end
    def sisu_0_69
      <<WOK
  SiSU 0.69 (same as 1.0) as previous (0.57) with the addition of book index tags
    /^=\{.+?\}$/
    e.g. appended to a paragraph, on a new-line (without a blank line in between)
    logical structure produced assuming this is the first text "object"
    ={GNU/Linux community distribution:Debian+2|Fedora|Gentoo;Free Software Foundation+5}

   Free Software Foundation, 1-6
   GNU/Linux community distribution, 1
       Debian, 1-3
       Fedora, 1
       Gentoo,

WOK
    end
    def sisu_0_66
      <<WOK
  SiSU 0.66 same as previous, adds semantic tags
    /[:;]\{.+?\}[:;][a-z+]/
    e.g. :{ Ralph last;{Amissah};last }:author

WOK
    end
    def sisu_0_65
      <<WOK
  SiSU 0.65 same as previous, adds semantic tags
    /[a-z+][:;]\{.+?\}[:;][a-z+]/
    e.g. author:{ Ralph last;{Amissah};last }:author

WOK
    end
    def sisu_0_57
      <<WOK

  SiSU 0.57 (a subset of 1.0) is the same as 0.42 with the introduction of some
  a shortcut to use the headers @title and @creator in the first heading
  [expanded using the contents of the headers @title: and @author:]

  :A~ @title by @author

WOK
    end
    def sisu_0_42
      <<WOK
  SiSU 0.42 (a subset of 1.0) is the same as 0.38 with the introduction of some additional endnote types,

  Introduces some varations on endnotes, in particular the use of the asterisk
  ~{* for example for describing an author }~ and ~{** for describing a second author }~

  * for example for describing an author

  ** for describing a second author

  and ~[* my note ]~ or ~[+ another note ]~ which numerically increments an
  asterisk and plus respectively

  *1 my note
  +1 another note

WOK
    end
    def sisu_0_38
      <<WOK

  SiSU 0.38 (a subset of 1.0) introduced alternative experimental header and heading/structure markers,

  @headername: and headers :A~ :B~ :C~ 1~ 2~ 3~

  as the equivalent of (the superceded)

  0~headername and headers 1~ 2~ 3~ 4~ 5~ 6~

  The internal document markup of SiSU 0.16 remains valid and standard
  Though note that SiSU 0.37 introduced a new file naming convention

  SiSU has in effect two sets of levels to be considered, using 0.38 notation
  A-C headings/levels, pre-ordinary paragraphs /pre-substantive text, and
  1-3 headings/levels, levels which are followed by ordinary text.
    This may be conceptualised as levels A,B,C, 1,2,3, and using such letter
    number notation, in effect:
      A must exist, optional B and C may follow in sequence (not strict)
      1 must exist, optional 2 and 3 may follow in sequence
    i.e. there are two independent heading level sequences A,B,C and 1,2,3
      (using the 0.16 standard notation 1,2,3 and 4,5,6)
    on the positive side:
      * the 0.38 A,B,C,1,2,3 alternative makes explicit an aspect of structuring
        documents in SiSU that is not otherwise obvious to the newcomer (though
        it appears more complicated, is more in your face and likely to be
        understood fairly quickly)
      * the substantive text follows levels 1,2,3 and it is 'nice' to do
        most work in those levels
WOK
    end
    def sisu_0_37
      <<WOK

  SiSU 0.37 introduced the file naming convention, that remains in use in SiSU
  v1 and v2, using the file extensions .sst .ssm and .ssi
  to replace .s1 .s2 .s3 .r1 .r2 .r3  and .si

  this is captured by the following file 'rename' instruction:

  rename 's/\.s[123]$/\.sst/' *.s{1,2,3}
  rename 's/\.r[123]$/\.ssm/' *.r{1,2,3}
  rename 's/\.si$/\.ssi/' *.si

  The internal document markup remains unchanged, from SiSU 0.16
WOK
    end
    def sisu_0_16
      <<WOK

  SiSU 0.16 (0.15 development branch) introduced the use of

  the header 0~ and headings/structure 1~ 2~ 3~ 4~ 5~ 6~

  in place of the 0.1 header, heading/structure notation
WOK
    end
    def sisu_0_1
      <<WOK

  SiSU 0.1 headers and headings structure represented by
  header 0{~ and headings/structure  1{ 2{ 3{ 4{~ 5{ 6{
WOK
    end
    def help_query
      <<WOK

  sisu --query=[sisu version [0.38] or 'history]
  provides a short history of changes to SiSU markup

WOK
    end
    def help_identify
      <<WOK

  sisu --identify [filename]
  attempts to identify the SiSU markup used in a file

WOK
    end
    def query
      tell=if @opt.selections.str =~/--query/
        tell=case @opt.selections.str
        when /history/
          "#{sisu_3_0}#{sisu_2_0}#{sisu_1_0}#{sisu_0_69}#{sisu_0_66}#{sisu_0_57}#{sisu_0_42}#{sisu_0_38}\n#{sisu_0_37}\n#{sisu_0_16}\n#{sisu_0_1}"
        when /3.0/
          "#{sisu_3_0}#{sisu_2_0}#{sisu_1_0}#{sisu_0_69}#{sisu_0_66}#{sisu_0_57}#{sisu_0_42}#{sisu_0_38}#{sisu_0_16}"
        when /2.0/
          "#{sisu_2_0}#{sisu_1_0}#{sisu_0_69}#{sisu_0_66}#{sisu_0_57}#{sisu_0_42}#{sisu_0_38}#{sisu_0_16}"
        when /1.0/
          "#{sisu_1_0}#{sisu_0_69}#{sisu_0_66}#{sisu_0_57}#{sisu_0_42}#{sisu_0_38}#{sisu_0_16}"
        when /0.69/
          "#{sisu_0_69}#{sisu_0_66}#{sisu_0_57}#{sisu_0_42}#{sisu_0_38}#{sisu_0_16}"
        when /0.66/
          "#{sisu_0_66}#{sisu_0_57}#{sisu_0_42}#{sisu_0_38}#{sisu_0_16}"
        when /0.65/
          "#{sisu_0_65}#{sisu_0_57}#{sisu_0_42}#{sisu_0_38}#{sisu_0_16}"
        when /0.57/
          "#{sisu_0_57}#{sisu_0_42}#{sisu_0_38}#{sisu_0_16}"
        when /0.42/
          "#{sisu_0_42}#{sisu_0_38}#{sisu_0_16}"
        when /0.38/
          "#{sisu_0_38}#{sisu_0_16}"
        when /0.37/
          "#{sisu_0_37}\n#{sisu_0_16}"
        when /0.1[6-9]|0.2[0-9]|0.3[0-6]/
          "#{sisu_0_16}\n#{sisu_0_1}"
        when /0.[1-9]|0.1[1-4]/
          sisu_0_1
        else puts "NOT RECOGNISED: #{@opt.selections.str}"
          help_query
        end
        tell
      else help_query
      end
    end
  end
end
__END__
#%% to use as independent program ------------------------->
f=$*
cf=f[0].to_s
f.shift
match_and_replace=[]
unless f.length > 0; f=Dir.glob("[a-z]*.ss?")  #restricted to sisu type files, it need not be
end
puts "SiSU files:"
puts f
f.each do |x|
  SiSU_Markup::MarkupIdentify.new(x).markup_version?
end
#+END_SRC

* sst_do_inline_footnotes.rb

#+HEADER: :tangle "../lib/sisu/sst_do_inline_footnotes.rb"
#+BEGIN_SRC ruby
#<<sisu_document_header>>
module SiSU_ConvertFootnotes
  require_relative 'se'                                 # se.rb
    include SiSU_Env
  require_relative 'dp'                                 # dp.rb
    include SiSU_Param
  require_relative 'ao_syntax'                          # ao_syntax.rb
    include SiSU_AO_Syntax
  require_relative 'i18n'                               # i18n.rb
  class Instantiate < SiSU_Param::Parameters::Instructions
     @@flag={} #Beware!!
    def initialize
      @@flag['table_to']=false
      @@counter=@@column=@@columns=@@flag_vocab=0
      @@endnote={}
      @@endnote_array=@@word_mode=[]
      @@endnote_call_counter=1
      @@line_mode=''
    end
  end
  class Source <Instantiate
    @@ao_array=[]
    @@fns=nil
    def initialize(opt)
      @opt=opt
      @@fns||@opt.fns
      @my_make=SiSU_Env::CreateFile.new(@opt.fns)
      @fnm=SiSU_Env::InfoFile.new(@opt.fns).marshal.ao_content
    end
    def read                                                                     #creates ao
      begin
        @@ao_array=[]
        @@fns=@opt.fns
        create_ao
      rescue
        SiSU_Errors::Rescued.new($!,$@,@opt.cmd,@opt.fns).location do
          __LINE__.to_s + ':' + __FILE__
        end
      ensure
        Instantiate.new
      end
    end
    def get                                                                      #reads ao, unless does not exist then creates first
      begin
        ao=[]
        unless @@fns==@opt.fns
          @@fns=@opt.fns
          @@ao_array=[]
        end
        ao=(@@ao_array.empty?) \
        ? read_fnm
        : @@ao_array.dup #check
      rescue
        SiSU_Errors::Rescued.new($!,$@,@opt.cmd,@opt.fns).location do
          __LINE__.to_s + ':' + __FILE__
        end
      ensure
        Instantiate.new
      end
    end
  protected
    def create_ao
      ao_array=[]
      SiSU_Screen::Ansi.new(
        @opt.act[:color_state][:set],
        'convert footnotes'
      ).green_title_hi unless @opt.act[:quiet][:set]==:on
      file_array=IO.readlines(@opt.fns,'')
      file_array.each do |l|
        if l =~/\r\n/ then l.gsub!(/\r\n/,"\n")
        end
      end
      meta=file_array.dup
      meta=meta.join.split("\n\n") #check whether can be eliminated, some of these are large objects to have twice
      @md=SiSU_Param::Parameters::Instructions.new(meta,@opt).extract
      if @md.en[:mismatch]==0 \
      or @md.opt.selections.str =~/=footnotes-force/
        meta=nil
        ao=SiSU_ConvertFootnotes::Make.new(@md,file_array).song
        SiSU_Screen::Ansi.new(
          @opt.act[:color_state][:set],
          @opt.fns,
          "#{@md.fns}.fn"
        ).output if @md.opt.act[:verbose][:set]==:on
        SiSU_Screen::Ansi.new(
          @opt.act[:color_state][:set],
          "#{@md.fns}.fn -> #{@md.fns}.fn"
        ).txt_red unless @md.opt.act[:quiet][:set]==:on
        ao.each {|s| ao_array << "#{s.strip}\n\n" unless s.strip.empty?}
        ao_array
      else
        SiSU_Screen::Ansi.new(
          @md.opt.act[:color_state][:set],
          '*WARN* no footnote conversion done, problem with source file',
          'to override use --convert=footnote-force (this is not advised)'
        ).warn unless @md.opt.act[:quiet][:set]==:on
        ''
      end
    end
    def read_fnm
      ao=[]
      ao=(FileTest.file?(@fnm)) \
      ? (File.open(@fnm){ |f| ao=Marshal.load(f)})
      : (SiSU_ConvertFootnotes::Source.new(@opt).create_ao) #watch
    end
  end
  class Output
    def initialize(md,data)
      @md,@data=md,data
      @my_make=SiSU_Env::CreateFile.new(@md.fns)
      SiSU_Env::InfoEnv.new(@md.fns)
      @hard="#{Dir.pwd}/#{@md.fns}.fn"
    end
    def hard_output
      filename_note=@my_make.file_note
      @data.each {|s| filename_note.puts s.strip + "\n\n" unless s.strip.empty?}
    end
  end
  class Make
    @@endnote={}
    @@endnote_array=@@word_mode=[]
    @@endnote_call_counter=1
    @@comment='%'
    @@flag={ ['table_to']=>false }
    def initialize(md,data)
      @md,@data=md,data
      @@word_mode=[]
      @env=SiSU_Env::InfoEnv.new(@md.fns)
      l=SiSU_Env::StandardiseLanguage.new(@md.opt.lng).language
      @language=l[:n]
      @translate=SiSU_Translate::Source.new(@md,@language)
    end
    def reset
      @@counter=@@column=@@columns=@@flag_vocab=0
      @@endnote={}
      @@endnote_array=@@word_mode=[]
      @@endnote_call_counter=1
      @@line_mode=''
    end
    def song
      reset
      data=@data
      @metafile="#{@env.processing_path.ao}/#{@md.fns}.meta"
      SiSU_Env::CreateFile.new(@md.fns)
      data=data.join.split("\n\n")
      data_new=[]
      data.each do |x|
        data_new << (x =~ /\n\n/m) \
        ? (x.split(/\n\n+/))
        : x
      end
      data=data_new.flatten
      data=SiSU_ConvertFootnotes::Make.new(@md,data).character_check
      data=SiSU_ConvertFootnotes::Make.new(@md,data).endnotes
      SiSU_ConvertFootnotes::Output.new(@md,data).hard_output
      reset
      data
    end
  protected
    def vocabulary
      data=@data
      tuned_file,vocab_insert=[],[]
      data.each do |para|
        if para =~/^1~/ \
        and @@flag_vocab==0
          vocab_insert << '@vocabulary: lex' << "\n\n" << para
          tuned_file << vocab_insert unless para.nil?
          @@flag_vocab=1
        else tuned_file << para unless para.nil?
        end
      end
      tuned_file
    end
    def character_check
      reset
      data=@data
      @tuned_file=[]
      endnote_no=1
      data.each do |para|
        para.strip!
        para.gsub!(/^[{~}]\s*$/,'')
        para.gsub!(/^#{@@comment}.*/,'')                                       #remove comment and divider #%
        para.gsub!(/<~#>|~#\s*/,'~#')
        para.gsub!(/-#\s*/,'-#')
        para.gsub!(/(~\{ )\s+/,'\1')
        para.gsub!(/ \/\//,'<br />')                                           #added 2004w29
        para.gsub!(/<br>/,'<br />')                                            #needed by xml, xhtml etc.
        para.gsub!(/`/,"'")
        para.gsub!(/\342\200\231/,"'") #if para =~/’/  #Avoid #&lsquo; &rsquo; #&ldquo; &rdquo;
        para.gsub!(/\t/,' ')
        para.gsub!(/�/,' ') #watch, replace with char code
        para.gsub!(/[“”]/,'""')
        para.gsub!(/[­–—]/,'-')   #— – chk
        para.gsub!(/·/,'*')
        para.gsub!(/\\copy(?:right)?\b/,'&#169;')
        para.gsub!(/\\trademark\b|\\tm\b/,'&#174;')
        para.gsub!(/\44/,'&#36;') #$ watch
        para=para + "\n"
        case para
        when /\^~/                                                             # endnotes
                                                                               #% Note must do this first (earlier loop) and then enter gathered data into ~^\d+
          sub_para=para.dup
          @@endnote_array << sub_para.gsub!(/\n/,'').gsub!(/\^~\s+(.+)\s*/,'~{ \1 }~').strip
           endnote_no+=1
          para=nil if para =~/\^~ .+/ #removes 'binary' endnote now in endnote array for later insertion
        end
        @tuned_file << para unless para.nil?
      end
      @tuned_file
    end
    def name_endnote_seg
      data=@data
      @tuned_file=[]
      data.each do |para|
        para.gsub!(/<:3>\s*<:ee>/,
          "#{@@endnote['special_align']} <p /><br />\r " +
          "#{@@endnote['seg_name_3']} <p /> " +
          "#{@@endnote['special_align_close']}")
        para.gsub!(/<:2>\s*<:ee>/,
          "#{@@endnote['special_align']} <p /><br />\r " +
          "#{@@endnote['seg_name_2']} <p />" +
          "#{@@endnote['special_align_close']}")
        para.gsub!(/<:1>\s*<:ee>/,
          "#{@@endnote['special_align']} <p /><br />\r " +
          "#{@@endnote['seg_name_1']} <p /> " +
          "#{@@endnote['special_align_close']}")
        @tuned_file << para
      end
      if @md.flag_auto_endnotes \
      and @md.flag_separate_endnotes_make
        @tuned_file << "\n1~endnotes Endnotes" #prob numbering, revisit
      end
      @tuned_file << "\n<ENDNOTES>"
      @tuned_file
    end
    def owner_details_seg
      data << '1~owner.details Owner Details'
    end
    def number_sub_heading(para,num,title_no)
      case para
      when /#{num}~- /    then para.gsub!(/#{num}~- /,"#{title_no} ")
      when /^#{num}~#\s*/ then para.gsub!(/^#{num}~#\s*/,"#{title_no} ")
      when /^#{num}~[a-z_\.]+ /
        para.gsub!(/^#{num}~([a-z_\.]+)\s+(.+)/i,%{#{num}~\\1 #{title_no} \\2  <:name##{title_no}>})
      else para.gsub!(/^#{num}~ /,"#{num}~#{title_no} #{title_no} ") #main
      end
      if @md.toc_lev_limit \
      and @md.toc_lev_limit < num
        para.gsub!(/^[2-6]~(?:~\S+)?\s*/,'!_ ')
      end
      para
    end
    def set_heading_top                                                        #% make sure no false positives
      unless @md.set_heading_top
        if (@md.opt.act[:verbose_plus][:set]==:on \
        || @md.opt.act[:maintenance][:set]==:on)
          puts "\tdocument contains no top level heading, (will have to manufacture one)"
        end
        data=@data
        @tuned_file=[]
        data.each do |para|
          unless @md.set_heading_top
            if para !~/^(?:@\S+:|0~\S+)\s/m \
            and para !~/\A\s*\Z/m
              @md.set_heading_top=true
              head=(@md.title.full) \
              ? (":A~ #{@md.title.full}")
              : (':A~ [no title provided]')
              @tuned_file << head
            end
          end
          @tuned_file << para
        end
        @tuned_file
      end
    end
    def set_heading_seg                                                        #% make sure no false positives
      unless @md.set_heading_seg
        if (@md.opt.act[:verbose_plus][:set]==:on \
        || @md.opt.act[:maintenance][:set]==:on)
          puts "\tdocument contains no segment level, (will have to manufacture one)"
        end
        data=@data
        @tuned_file=[]
        data.each do |para|
          unless @md.set_heading_seg
            if para !~/^(?:@\S+:|0~\S+|:[ABC]~)/m \
            and para !~/\A\s*\Z/m \
            and para !~/<:p[bn]>/
              @md.set_heading_seg=true
              head=(@md.title.full) \
              ? ("1~seg [#{@md.title.full}]")
              : ('1~seg [segment]')
              @tuned_file << head
            end
          end
          @tuned_file << para
        end
        @tuned_file
      end
    end
    def set_header_title                                                       #% make sure no false positives
      unless @md.set_header_title
        if (@md.opt.act[:verbose_plus][:set]==:on \
        || @md.opt.act[:maintenance][:set]==:on)
          puts "\t no document title provided, (will have to manufacture one)"
        end
        data=@data
        @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 << "0~title #{@md.heading_seg_first}"
              @md.title.full=@md.heading_seg_first
              @md.set_header_title=true
            end
          end
          @tuned_file << para
        end
        @tuned_file
      end
    end
    def endnotes                                                                         #% endnote work zone
      data=@data
      @tuned_file=[]
      endnote_ref=1
      data.each do |para|
        case para                                                                               # manually numbered endnotes <!e(\d)!> <!e_(\d)!> -->
        when /~\{\s+.+?\}~/                                                                               # auto-numbered endnotes <!e!> <!e_!> -->
          para.gsub!(/\s*\}~/,' }~')                                           # required 2003w31
          @word_mode=para.scan(/\S+/)
          word_mode=SiSU_ConvertFootnotes::Make.new(@md,@word_mode).endnote_call_number
          para=word_mode.join(' ')
          endnote_ref+=1
        when /~\^(?:\s|$)|<:e>/                                                #%Note inserts endnotes previously gathered from /^(<!e[:_]!>|[-~]\{{3})/ (in earlier loop)
          word_mode=para.scan(/\S+/)
          word_mode=SiSU_ConvertFootnotes::Make.new(@md,word_mode).endnote_call_number
          para=word_mode.join(' ')
          endnote_ref+=1
        end
        @tuned_file << para
      end
      @tuned_file
    end
    def endnote_call_number
      data=@data
      data.each do |word|
        case word
        when /~\{/
          unless word =~/~\{\*+/
            @@endnote_call_counter+=1
          end
        when /~\^|<:e>/
          word.gsub!(/~\^|<:e>/,"#{@@endnote_array[@@endnote_call_counter-1]}")
          @@endnote_call_counter+=1
        end
      end
    end
    def strip_clean_extra_spaces(s)                                            # ao output tuned
      s=s.dup
      s=s.gsub(/[ ]+([,.;:?](?:$|\s))/,'\1')
      s=s.gsub(/ [ ]+/,' ')
      s=s.gsub(/^ [ ]+/,'')
      s=s.gsub(/ [ ]+$/,'')
      s=s.gsub(/(<\/[bi]>')[ ]+(s )/,'\1\2')
    end
    def strip_clean_of_markup(s)                                               # used for digest, define rules, make same as in db clean
      s=s.dup
      s=s.gsub(/(?:<\/?[ib]>|^:[A-C]~\S+|^[1-6]~\S+|~\{\d+\s.+?\}~)/,'') # markup and endnotes removed
                                                                               #% same as db clean -->
      s=s.gsub(/<del>(.+?)<\/del>/,'DELETED(\1)')                           # deletions
      s=s.gsub(/<sup>(\d+)<\/sup>/,'[\1]')
      s=s.gsub(/(?:&nbsp\\;|#{Mx[:nbsp]})+/,' ')  #checking source Mx not necessary
      s=s.gsub(/\{.+?\.(?:png|jpg|gif).+?\}(?:https?|file|ftp)\\\:\S+ /,' [image] ')             # else image names found in search
      s=s.gsub(/#{Mx[:lnk_o]}.+?\.(?:png|jpg|gif).+?#{Mx[:lnk_c]}#{Mx[:url_o]}\S+?#{Mx[:url_c]}/,' [image] ')             # else image names found in search, re-check
      s=s.gsub(/\s\s+/,' ')
      s=s.strip
    end
  end
end
__END__
@particulars=SiSU_Particulars::CombinedSingleton.instance.get_all(opt)
ao_array=@particulars.ao_array # ao file drawn here
#+END_SRC

* sst_convert_markup.rb

#+HEADER: :tangle "../lib/sisu/sst_convert_markup.rb"
#+BEGIN_SRC ruby
#<<sisu_document_header>>
module SiSU_Modify
  require_relative 'sst_identify_markup'                # sst_identify_markup.rb
  require_relative 'sst_from_xml'                       # sst_from_xml.rb
  require_relative 'utils_response'                     # utils_response.rb
  class ConvertMarkup
    include SiSU_Response
    def initialize(opt)
      @opt=opt
      @description='This is a script that contains canned text conversions for reuse'
      @warn='WARNING, PROCEED AT YOUR OWN RISK, will make file changes.'
    end
    def current_match_and_replace
      convert_37_to_38
    end
    def message(text)
      response=''
      unless @opt.cmd=~/QQ/ \
      or @opt.act[:quiet][:set]==:on
        response=response?(%{#{  text}\nProceed? })
      end
    end
    def help
    print <<WOK

#{@description}

sisu --convert --to38 [filename/wildcard]
  converts pre 0.37 sisu markup to 0.38 experimental
  [--37to38]

sisu --convert --to37 [filename/wildcard]
  converts pre 0.37 sisu markup to 0.38 experimental
  [--38to37]

sisu --convert --36to37 [filename/wildcard]
  converts pre 0.36 file-name, to 0.37 file-name
  [--36to37]

sisu --identify [filename]
  attempts to identify markup version used in file

sisu --query [version number]
  gives short summary of distinguishing characteristic
  of that version of markup

WOK
      exit
    end
    #%% substitutions to be made
    def convert_37_to_38
      message("#{@warn}\nConvert sisu markup from 0.37 to 0.38")
      [
        [/^0~(\S+?)([+-])\s+/,    '@\1:\2 ',               //],
        [/^0~(\S+)\s+/,           '@\1: ',                 //],
        [/^@toc:\s+/,             '@structure: ',          //],
        [/^1~/,                   ':A~',                   //],
        [/^2~/,                   ':B~',                   //],
        [/^3~/,                   ':C~',                   //],
        [/^4~/,                   '1~',                    //],
        [/^5~/,                   '2~',                    //],
        [/^6~/,                   '3~',                    //],
        [/^7~/,                   '4~',                    //],
        [/^8~/,                   '5~',                    //],
        [/^9~/,                   '6~',                    //],
        [/1/,                     ':A',                    /^@(?:level|markup):\s/],
        [/2/,                     ':B',                    /^@(?:level|markup):\s/],
        [/3/,                     ':C',                    /^@(?:level|markup):\s/],
        [/4/,                     '1',                     /^@(?:level|markup):\s/],
        [/5/,                     '2',                     /^@(?:level|markup):\s/],
        [/6/,                     '3',                     /^@(?:level|markup):\s/]
      ]
    end
    def convert_38_to_37
      message("#{@warn}\nConvert sisu markup from 0.38 to 0.37")
      [
        [/^@(\S+?):([+-])\s+/,    '0~\1\2 ',               //],
        [/^@(\S+?):\s+/,          '0~\1 ',                 //],
        [/^0~structure\s+/,       '0~toc ',                //],
        [/^1~/,                   '4~',                    //],
        [/^2~/,                   '5~',                    //],
        [/^3~/,                   '6~',                    //],
        [/^4~/,                   '7~',                    //],
        [/^5~/,                   '8~',                    //],
        [/^6~/,                   '9~',                    //],
        [/^:?A~/,                 '1~',                    //],
        [/^:?B~/,                 '2~',                    //],
        [/^:?C~/,                 '3~',                    //],
        [/1/,                     '4',                     /^0~(?:level|markup)\s/],
        [/2/,                     '5',                     /^0~(?:level|markup)\s/],
        [/3/,                     '6',                     /^0~(?:level|markup)\s/],
        [/:?A/,                   '1',                     /^0~(?:level|markup)\s/],
        [/:?B/,                   '2',                     /^0~(?:level|markup)\s/],
        [/:?C/,                   '3',                     /^0~(?:level|markup)\s/]
      ]
    end
    def convert_filename_36_to_37
      @opt.files.each do |f|
        s=case f
        when /(\.s[1-3])$/ then f.sub($1,'.sst')
        when /(\.r[1-3])$/ then f.sub($1,'.ssm')
        when /(\.ri)$/     then f.sub($1,'.ssi')
        else f
        end
        pwd=Dir.pwd
        unless f==s
          unless File.exist?("#{pwd}/#{s}")
            puts "./#{f} -> ./#{s}"
            FileUtils::cp("#{pwd}/#{f}","#{pwd}/#{s}")
          else "File already exists, < #{s} >  will not overwrite"
          end
        end
      end
    end
    def convert_to_simple_xml_model_sax
      SiSU_SimpleXML_ModelSax::Convert.new(@opt).read
    end
    def convert_to_simple_xml_model_dom
      SiSU_simple_xml_model_dom::Convert.new(@opt).read
    end
    def convert_to_simple_xml_model_node
      SiSU_simple_xml_model_node::Convert.new(@opt).read
    end
    def convert_kdi_to_sst
      SiSU_Kdissert::Convert.new(@opt).read
    end
    def convert_s_xml_to_sst
      SiSU_sstFromXML::Convert.new(@opt).read
    end
    def convert_footnotes
      require_relative 'sst_do_inline_footnotes'
      SiSU_ConvertFootnotes::Source.new(@opt).read
    end
    def conversion
      #%% do it                                   -------------------------->
      if @opt.files \
      and @opt.files.length > 0
        mr=nil
        #%% changes to make m match, r replace      -------------------------->
        if @opt.selections.str =~/--help/ then help
        elsif @opt.selections.str =~/(?:convert|to)[=-](?:xml |sxs|sax|sxd|dom|sxn|node)/
          ext=case @opt.selections.str
          when /(?:convert|to)[=-](?:xml|sxs|sax)/ then '.sxs.xml'
          when /(?:convert|to)[=-](?:sxd|dom)/     then '.sxd.xml'
          when /(?:convert|to)[=-](?:sxn|node)/    then '.sxn.xml'
          end
          message("#{@opt.files.inspect}\n\nWARNING, PROCEED AT YOUR OWN RISK,\noverwriting any equivalent file with the extension #{ext}")
          mr=case @opt.selections.str
          when /(?:convert|to)[=-](?:sxs|sax|xml )/ then convert_to_simple_xml_model_sax
          when /(?:convert|to)[=-](?:sxd|dom)/      then convert_to_simple_xml_model_dom
          when /(?:convert|to)[=-](?:sxn|node)/     then convert_to_simple_xml_model_node
          else help
          end
        else
          mr=case @opt.selections.str
          when /(?:(?:37)?to-?38|--(?:convert|to)[=-](?:current|0.38))/           then convert_37_to_38
          when /(?:(?:38)?to-?37|--(?:convert|to)[=-](?:0.37))/                   then convert_38_to_37
          when /(?:36to37)/                                                       then convert_filename_36_to_37
          when /(?:convert|from)[=-]kdi/                                          then convert_kdi_to_sst
          when /(?:(?:convert|from)[=-])?(?:xml_to_sst|xml2sst|sxml|sxs|sxd|sxd)/ then convert_s_xml_to_sst
          when /(?:convert|to)[=-]footnotes/                                      then convert_footnotes
          when /convert|default/                                                  then current_match_and_replace
          else help
          end
        end
        unless @opt.selections.str =~/kdi/
          match_and_replace=mr
          #start_processing =/not used in this example/i
          end_processing =/END\s+OF\s+FILE/
          i=@opt.fns
          if i =~/(?:\.sst|\.ssm|\.ssi)$/
            @new,@matched,@flag_start,@flag_end,@empty1,@empty2=true,false,false,false,false,false
            o="#{i}.bk" #o is for old
            markup_version=SiSU_Markup::MarkupIdentify.new(@opt).markup_version?
            if (@opt.selections.str=~/37/ and markup_version=~/0.38/) \
            or (@opt.selections.str=~/current|38/ and markup_version=~/0.37/)
              puts "#{i} #{markup_version}"
              file=File.open(i,'r')
              cont=file.readlines
              file.close
              cont.each do |y|
                match_and_replace.each do |m,r,w|
                  if y =~m \
                  and y =~w
                    if @new
                      @new=false
                      File.unlink(o) if File.exist?(o)
                      File.rename(i,o)
                      File.unlink(i) if File.exist?(i)
                      @file=File.new(i,'w')
                      @matched=true
                      break
                    end
                  end
                end
              end
              if @matched
                puts "conversion match in #{i}" unless @opt.act[:quiet][:set]==:on
                @flag_start=true
                cont.each do |y|
                  if y =~end_processing
                    @flag_end=true
                  end
                  if @flag_start \
                  and not @flag_end
                    match_and_replace.each do |m,r,w|
                      if y =~m \
                      and y =~w
                        puts m.inspect + ' -> ' + r unless @opt.act[:quiet][:set]==:on
                        if (@opt.act[:verbose][:set]==:on \
                        || @opt.act[:verbose_plus][:set]==:on \
                        || @opt.act[:maintenance][:set]==:on)
                          puts "in:  #{y}"
                        end
                        y.gsub!(m,r) if m and r
                        if (@opt.act[:verbose][:set]==:on \
                        || @opt.act[:verbose_plus][:set]==:on \
                        || @opt.act[:maintenance][:set]==:on)
                          puts "out: #{y}"
                        end
                      end
                    end
                  end
                  @empty1=(y=~/^\s*$/) \
                  ? true
                  : false
                  @file.puts y unless (@empty1==true and @empty2==true)
                  @empty2=(y=~/^\s*$/) \
                  ? true
                  : false
                end
                @file.close
              else puts "NO conversion match in #{i}" unless @opt.act[:quiet][:set]==:on
              end
            else
              if (@opt.act[:verbose][:set]==:on \
              || @opt.act[:verbose_plus][:set]==:on \
              || @opt.act[:maintenance][:set]==:on)
                puts "Requested conversion #{@opt.selections.str} markup #{markup_version} identified in #{i}"
              end
            end
          end
        end
      else puts 'this routine makes permanent changes to the contents of the files matched, as instructed within [no matches]'
      end
    end
  end
end
#%% files to match for this conversion set  ------------------------->
require_relative 'hub_options'                          # hub_options.rb
argv=$*
base_path=Dir.pwd
@opt=SiSU_Commandline::Options.new(argv,base_path)
case @opt.selections.str
when /=kdi/
  SiSU_Modify::ConvertMarkup.new(@opt).conversion
when /(?:36|37|38)?to-?(?:37|38)|--convert|--to|--from|default/
@opt.files.each do |fns|
  @opt.fns=fns
  SiSU_Modify::ConvertMarkup.new(@opt).conversion
end
else
  @opt.selections.str='--help'
 SiSU_Modify::ConvertMarkup.new(@opt).help
end
__END__
#+END_SRC

* document header

#+NAME: sisu_document_header
#+BEGIN_SRC text
encoding: utf-8
- Name: SiSU

  - Description: documents, structuring, processing, publishing, search
    sst

  - Author: Ralph Amissah
    <ralph.amissah@gmail.com>

  - Copyright: (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
    2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2019,
    2020, 2021, 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

  - Homepages:
    <http://www.sisudoc.org>

  - Git
    <https://git.sisudoc.org/projects/>
    <https://git.sisudoc.org/projects/?p=software/sisu.git;a=summary>
    <https://git.sisudoc.org/projects/?p=markup/sisu-markup-samples.git;a=summary>
#+END_SRC
