# encoding: utf-8
=begin

 * Name: SiSU

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

 * Author: Ralph Amissah

 * Copyright: (C) 1997 - 2011, 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.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: LaTeX formatting template, unicode utf-8 version, used for pdf

=end
module SiSU_TeX_Pdf
  @@table_pg_break_counter=1
  include SiSU_Viz
  class Bare_urls
    def initialize(md,dob=nil)
      @md,@dob=md,dob
      @brace_url=SiSU_Viz::Skin.new.url_decoration
    end
    def bare_urls
      @dob.obj.gsub!(/#{Mx[:url_o]}([a-zA-Z0-9._-]+\@\S+?\.[a-zA-Z0-9._-]+)#{Mx[:url_c]}/,
        "#{@brace_url.tex_open}\\1</a>#{@brace_url.tex_close}")
      @dob.tmp.gsub!(/(^|[^\\])_/m,'\1\_') #watch may not work
      @dob.tmp.gsub!(/(^|[^#{Mx[:lnk_c]}])#{Mx[:url_o]}_?(?:\\?_)?(\S+?)#{Mx[:url_c]}/m,
        "\\1#{@brace_url.tex_open}\\begin{scriptsize}\\url{\\2}\\end{scriptsize}#{@brace_url.tex_close}")
      @dob
    end
    def bare_urls_in_code
      @dob.tmp.gsub!(/(^|[^\\])_/m,'\1\_') #watch may not work
      @dob.tmp.gsub!(/(https?:\/\/\S+?)([{]|[.,;)\]]?(?: |$))/m,
        '\begin{scriptsize}\url{\1}\end{scriptsize}\2')
      @dob
    end
  end
  class Format_text_object
    require_relative 'defaults'                         # defaults.rb
    attr_accessor :string,:string1,:orientation,:url,:dir,:tex
    @@sys=SiSU_Env::System_call.new
    @@tex_pattern_margin_number=/\\begin\{tiny\}\\hspace\{0mm\}\\end\{tiny\}\{\\marginpar.+?\}\}\}/
    @@tableheader={
      'a4' => { p: 0, l: 0 },
      'a5' => { p: 0, l: 0 },
      'b5' => { p: 0, l: 0 },
      'letter' => { p: 0, l: 0 },
      'legal' => { p: 0, l: 0 }
    }
    @@sys=SiSU_Env::System_call.new
    def initialize(md,dob=nil)
      @md,@dob=md,dob
      if defined? @md.image \
      and @md.image =~/center/
        @center_begin,@center_end='\begin{center}','\end{center}'
      else @center_begin,@center_end='',''
      end
      @start_table=''
      @tx=SiSU_Env::Get_init.instance.tex
      @brace_rel=SiSU_Viz::Skin.new.rel_decoration
      @env ||=SiSU_Env::Info_env.new(@md.fns)
      @tex2pdf=@@tex3pdf ||=SiSU_Env::System_call.new.tex2pdf_engine
    end
    def ocn_display(dob)
      "\\begin{tiny}\\hspace{0mm}\\end{tiny}{\\marginpar{\\begin{tiny}\\hspace{0mm}\\hypertarget{#{dob.ocn}}{#{dob.ocn}}\\end{tiny}}}" #ocn object citation numbering
    end
    def table_special_characters(r)
      r.gsub!(/#{Mx[:tc_p]}|$/u,'&')
      r.gsub!(/%/,'\%')
      r.gsub!(/#{Mx[:fa_bold_o]}(.+?)#{Mx[:fa_bold_c]}/,'\begin{bfseries}\1 \end{bfseries}')
      r.gsub!(/#{Mx[:fa_italics_o]}(.+?)#{Mx[:fa_italics_c]}/,'\emph{\1}')
      r.gsub!(/#{Mx[:fa_underscore_o]}(.+?)#{Mx[:fa_underscore_c]}/,'\uline{\1}') # ulem
      r.gsub!(/#{Mx[:fa_cite_o]}(.+?)#{Mx[:fa_cite_c]}/,"``\\1''") # quote #CHECK
      r.gsub!(/#{Mx[:fa_insert_o]}(.+?)#{Mx[:fa_insert_c]}/,'\uline{\1}') # ulem
      r.gsub!(/#{Mx[:fa_strike_o]}(.+?)#{Mx[:fa_strike_c]}/,'\sout{\1}') # ulem
      r.gsub!(/#{Mx[:fa_superscript_o]}(.+?)#{Mx[:fa_superscript_c]}/,"\$^{\\textrm{\\1}}\$")
      r.gsub!(/#{Mx[:fa_subscript_o]}(.+?)#{Mx[:fa_subscript_c]}/,"\$_{\\textrm{\\1}}\$")
      r
    end
    def longtable_landscape
      end_table='\end{longtable}'
      row_break='\\\\\\'
      txt=if @dob.is=='table'
        tw=case @dob.tmp[:paper_size]
        when /a4/i;      @tx.a4.landscape.w     #European default, SiSU default
        when /letter/i;  @tx.letter.landscape.w #U.S. default
        when /legal/i;   @tx.legal.landscape.w  #U.S. alternative
        when /book|b5/i; @tx.b5.landscape.w     #book default - larger
        when /a5/i;      @tx.a5.landscape.w
        else             @tx.a4.landscape.w     #default currently A4
        end
        textwidth=(tw.to_i/2) - 24
        colW=[]
        colW << '{'
        @dob.widths.each  do |x|
          x=(x.to_i * textwidth)/100
          col_w=x.to_s # x.gsub(/.+/,'l\|') #unless x.nil?
          colW << "p{#{col_w}mm}" if col_w
        end
        colW << '}'
        colW=colW.join
        start_table="\n\\setlength{\\LTleft}{0pt}\n\\setlength{\\LTright}{\\fill}\n" +
          "\\begin{tiny}\n\\begin{longtable}#{colW}\n"
        rows=@dob.obj.split(/#{Mx[:br_nl]}/)
        if @dob.head_ #result imperfect, check on
          rows[0].gsub!(/(^|.+?)(?:#{Mx[:tc_p]}|$)/u,'\bfseries \1&')
          rows[0].gsub!(/&\s*$/," #{row_break} \\hline\\endhead #{row_break}")
        end
        rows.each do |r|
          r=table_special_characters(r)
          r.gsub!(/$/," #{row_break}\n") unless r =~/#{row_break*2}$/
          if r=~/\<!f(.+?)!\>/ # not tested table footer if any
            tablefoot=$1
            r.gsub!(/\<!f(.+?)!\>/,'')
            r="#{r} \\multicolumn{#{@dob.cols}}{l}{\\tiny #{tablefoot}} \\\\ \\hline\n\\endfoot\n\\hline\n"
          end
        end
        table=rows.join #@dob[:dal].obj=rows.join
        ocn_display(@dob) + start_table + table + " #{end_table}\n\\end{tiny}"
      else ''
      end
    end
    def longtable_portrait
      end_table='\end{longtable}'
      row_break='\\\\\\'
      txt=if @dob.is=='table'
        tw=case @dob.tmp[:paper_size]
        when /a4/i;      @tx.a4.portrait.w     #European default, SiSU default
        when /letter/i;  @tx.letter.portrait.w #U.S. default
        when /legal/i;   @tx.legal.portrait.w  #U.S. alternative
        when /book|b5/i; @tx.b5.portrait.w     #book default - larger
        when /a5/i;      @tx.a5.portrait.w
        else             @tx.a4.portrait.w     #default currently A4
        end
        textwidth=tw.to_i - 20
        colW=[]
        colW << '{'
        @dob.widths.each do |x|
          x=(x.to_i * textwidth)/100 #x=(x.to_i/100.0 * 160)
          col_w=x.to_s # x.gsub(/.+/,'l\|') #unless x.nil?
          colW << "p{#{col_w}mm}" if col_w
        end
        colW << '}'
        colW=colW.join
        start_table="\n\\setlength{\\LTleft}{0pt}\n\\setlength{\\LTright}{\\fill}\n" +
          "\\begin{tiny}\n\\begin{longtable}#{colW}\n"
        rows=@dob.obj.split(/#{Mx[:br_nl]}/)
        if @dob.head_
          rows[0].gsub!(/(^|.+?)(?:#{Mx[:tc_p]}|$)/u,'\bfseries \1&')
          rows[0].gsub!(/&\s*$/," #{row_break} \\hline\\endhead #{row_break}")
        end
        rows.each do |r|
          r=table_special_characters(r)
          r.gsub!(/$/," #{row_break}\n") unless r =~/#{row_break*2}$/
          if r=~/\<!f(.+?)!\>/ # not tested table footer if any
            tablefoot=$1
            r.gsub!(/\<!f(.+?)!\>/,'')
            r="#{r} \\multicolumn{#{@dob.cols}}{l}{\\tiny #{tablefoot}} \\\\ \\hline\n\\endfoot\n\\hline\n"
          end
        end
        table=rows.join #@dob[:dal].obj=rows.join
        ocn_display(@dob) + start_table + table + " #{end_table}\n\\end{tiny}"
      else ''
      end
    end
    def heading_major
      dob=@dob
      title=@md.title.full
      dob.tmp.strip! if dob.tmp
      dob.tmp.gsub!(/\\begin\{(bfseries|itshape)\}(.+?)\\end\{\1\}/m,'\2')
      cont_ln=dob.tmp.dup
      cont_ln.gsub!(/\\begin\{(monosp)\}(.+?)\\end\{\1\}/m,'\2')
      cont_ln.gsub!(@@tex_pattern_margin_number,'')
      clearp=(dob.lv =~/B/ && dob.obj =='Metadata') ? "\\clearpage\n" : ''
      if dob.tmp =~/\\[Ff]ootnote/ #and dob =~/^[1-6]#{Tex[:tilde]}/ # removing footnotes from headings!
        cont_ln.gsub!(/\s*\\footnote\[\d+\]\{%\n .+? \}\s*/,' ')
        cont_ln.gsub!(/\s*\\Footnote[A]\{[*+]+\d*\}\{%\n .+? \}\s*/,' ')
      end
      dob.tmp.gsub!(/^(.*)\n?$/m,
        "#{clearp}\\part*{\\1}
\\addcontentsline{toc}{section}{#{cont_ln}}
\\markboth{#{title}}\n")
      dob
    end
    def level4
      dob=@dob
      dob.tmp.strip! if dob.tmp
      dob.tmp.gsub!(/\\begin\{(bfseries|itshape)\}(.+?)\\end\{\1\}/m,'\2')
      cont_ln=dob.tmp.dup
      cont_ln.gsub!(/\\begin\{(monosp)\}(.+?)\\end\{\1\}/m,'\2')
      cont_ln.gsub!(@@tex_pattern_margin_number,'')
      cont_ln.gsub!(/#{Tex[:backslash]*2}/,"#{Tex[:backslash]*4}") # added w42
      cont_ln.gsub!(/\\footnote\[\d+\]\{%.+?\\end\{scriptsize\}\s*\}/m,'') #arbitrary bugfix, revisit should not be necessary, eg. wta.1994 2004w22
      cont_ln.gsub!(/\\Footnote[A]\{[*+]+\d*\}\{%.+?\\end\{scriptsize\}\s*\}/m,'') #arbitrary bugfix, revisit should not be necessary, eg. wta.1994 2004w22
      title=@md.title.full
      if dob.name =~/endnotes/
        dob.tmp.gsub!(/.+/m,'')
      end
      if dob.tmp =~/\\footnote/ #and dob =~/^[1-6]#{Tex[:tilde]}/ # removing footnotes from headings!
        cont_ln.gsub!(/\s*\\footnote\[\d+\]\{%\n .+? \}\s*/,' ')
        cont_ln.gsub!(/\s*\\Footnote[A]\{[*+]+\d*\}\{%\n .+? \}\s*/,' ')
      end
      dob.tmp.gsub!(/^(.*)?\n?$/m,"\\subsubsection*{\\1}
\\addcontentsline{toc}{subsection}{#{cont_ln}}
\\markright{#{title}}")
      dob
    end
    def level5
      dob=@dob
      # there is a problem here with creation of headers does not do what you would want it to header starts with a * and is not in bold work on \\@txt*, same for next section 2002w46
      dob.tmp.strip! if dob.tmp
      dob.tmp.gsub!(/\\begin\{(bfseries|itshape)\}(.+?)\\end\{\1\}/m,'\2')
      cont_ln=dob.tmp.dup
      cont_ln.gsub!(/\\begin\{(monosp)\}(.+?)\\end\{\1\}/m,'\2')
      cont_ln.gsub!(@@tex_pattern_margin_number,'')
      cont_ln.gsub!(/\\footnote\[\d+\]\{%.+?\\end\{scriptsize\}\s*\}/m,'') #arbitrary bugfix, revisit should not be necessary, eg. wta.1994 2004w22
      cont_ln.gsub!(/\\Footnote[A]\{[*+]+\d*\}\{%.+?\\end\{scriptsize\}\s*\}/m,'') #arbitrary bugfix, revisit should not be necessary, eg. wta.1994 2004w22
      cont_ln.gsub!(/\\\&/,' and ') #revisit: tmp bugfix 200507, substitutes & with 'and' in toc, needed e.g. for AT&T, see ffa
      if dob.tmp =~/\\footnote/ #and dob =~/^[1-6]#{Tex[:tilde]}/ # removing footnotes from headings!
        cont_ln.gsub!(/\s*\\footnote\[\d+\]\{%\n .+? \}\s*/,' ')
        cont_ln.gsub!(/\s*\\Footnote[A]\{[*+]+\d*\}\{%\n .+? \}\s*/,' ')
      end
      dob.tmp.gsub!(/^(.*)?\n?$/m,
        "\\subsubsection*{\\1}
\\addcontentsline{toc}{subsubsection}{#{cont_ln} \\\\
}")
      dob
    end
    def level6
      dob=@dob
      # there is a problem here with creation of headers does not do what you would want it to header starts with a * and is not in bold work on \\sub@txt*, same for previous section 2002w46
      dob.tmp.strip! if dob.tmp
      dob.tmp.gsub!(/\\begin\{(bfseries|itshape)\}(.+?)\\end\{\1\}/m,'\2')
      cont_ln=dob.tmp.dup
      cont_ln.gsub!(/\\begin\{(monosp)\}(.+?)\\end\{\1\}/m,'\2')
      cont_ln.gsub!(@@tex_pattern_margin_number,'')
      cont_ln.gsub!(/\\footnote\[\d+\]\{%.+?\\end\{scriptsize\}\s*\}/m,'') #arbitrary bugfix, revisit should not be necessary, eg. wta.1994 2004w22
      cont_ln.gsub!(/\\Footnote[A]\{[*+]+\d*\}\{%.+?\\end\{scriptsize\}\s*\}/m,'') #arbitrary bugfix, revisit should not be necessary, eg. wta.1994 2004w22
      if dob.tmp =~/\\footnote/ #and dob =~/^[1-6]#{Tex[:tilde]}/ # removing footnotes from headings!
        cont_ln.gsub!(/\s*\\footnote\[\d+\]\{%\n .+? \}\s*/,' ')
        cont_ln.gsub!(/\s*\\Footnote[A]\{[*+]+\d*\}\{%\n .+? \}\s*/,' ')
      end
      dob.tmp.gsub!(/^(.*)?\n?$/m,
        "\\subsubsection*{\\1}
\\addcontentsline{toc}{subsubsection}{~~~~#{cont_ln} \\\\
}")
      #dob.tmp.gsub!(/^(.*)?\n?$/m,
      #  '\subsubsection*{\1}')
      dob
    end
    def hang
      case @dob.indent
      when /0/
        case @dob.hang
        when /0/; indent,hang='0mm', '0mm'
        when /1/; indent,hang='0mm','10mm'
        when /2/; indent,hang='0mm','20mm'
        when /3/; indent,hang='0mm','30mm'
        when /4/; indent,hang='0mm','40mm'
        when /5/; indent,hang='0mm','50mm'
        when /6/; indent,hang='0mm','60mm'
        when /7/; indent,hang='0mm','70mm'
        when /8/; indent,hang='0mm','80mm'
        when /9/; indent,hang='0mm','90mm'
        end
      when /1/
        case @dob.hang
        when /0/; indent,hang='10mm','-10mm'
        when /1/; indent,hang='10mm',  '0mm'
        when /2/; indent,hang='10mm', '10mm'
        when /3/; indent,hang='10mm', '20mm'
        when /4/; indent,hang='10mm', '30mm'
        when /5/; indent,hang='10mm', '40mm'
        when /6/; indent,hang='10mm', '50mm'
        when /7/; indent,hang='10mm', '60mm'
        when /8/; indent,hang='10mm', '70mm'
        when /9/; indent,hang='10mm', '80mm'
        end
      when /2/
        case @dob.hang
        when /0/; indent,hang='20mm','-20mm'
        when /1/; indent,hang='20mm','-10mm'
        when /2/; indent,hang='20mm',  '0mm'
        when /3/; indent,hang='20mm', '10mm'
        when /4/; indent,hang='20mm', '20mm'
        when /5/; indent,hang='20mm', '30mm'
        when /6/; indent,hang='20mm', '40mm'
        when /7/; indent,hang='20mm', '50mm'
        when /8/; indent,hang='20mm', '60mm'
        when /9/; indent,hang='20mm', '70mm'
        end
      when /3/
        case @dob.hang
        when /0/; indent,hang='30mm','-30mm'
        when /1/; indent,hang='30mm','-20mm'
        when /2/; indent,hang='30mm','-10mm'
        when /3/; indent,hang='30mm',  '0mm'
        when /4/; indent,hang='30mm', '10mm'
        when /5/; indent,hang='30mm', '20mm'
        when /6/; indent,hang='30mm', '30mm'
        when /7/; indent,hang='30mm', '40mm'
        when /8/; indent,hang='30mm', '50mm'
        when /9/; indent,hang='30mm', '60mm'
        end
      when /4/
        case @dob.hang
        when /0/; indent,hang='40mm','-40mm'
        when /1/; indent,hang='40mm','-30mm'
        when /2/; indent,hang='40mm','-20mm'
        when /3/; indent,hang='40mm','-10mm'
        when /4/; indent,hang='40mm',  '0mm'
        when /5/; indent,hang='40mm', '10mm'
        when /6/; indent,hang='40mm', '20mm'
        when /7/; indent,hang='40mm', '30mm'
        when /8/; indent,hang='40mm', '40mm'
        when /9/; indent,hang='40mm', '50mm'
        end
      when /5/
        case @dob.hang
        when /0/; indent,hang='50mm','-50mm'
        when /1/; indent,hang='50mm','-40mm'
        when /2/; indent,hang='50mm','-30mm'
        when /3/; indent,hang='50mm','-20mm'
        when /4/; indent,hang='50mm','-10mm'
        when /5/; indent,hang='50mm',  '0mm'
        when /6/; indent,hang='50mm', '10mm'
        when /7/; indent,hang='50mm', '20mm'
        when /8/; indent,hang='50mm', '30mm'
        when /9/; indent,hang='50mm', '40mm'
        end
      when /6/
        case @dob.hang
        when /0/; indent,hang='60mm','-60mm'
        when /1/; indent,hang='60mm','-50mm'
        when /2/; indent,hang='60mm','-40mm'
        when /3/; indent,hang='60mm','-30mm'
        when /4/; indent,hang='60mm','-20mm'
        when /5/; indent,hang='60mm','-10mm'
        when /6/; indent,hang='60mm',  '0mm'
        when /7/; indent,hang='60mm', '10mm'
        when /8/; indent,hang='60mm', '20mm'
        when /9/; indent,hang='60mm', '30mm'
        end
      when /7/
        case @dob.hang
        when /0/; indent,hang='70mm','-70mm'
        when /1/; indent,hang='70mm','-60mm'
        when /2/; indent,hang='70mm','-50mm'
        when /3/; indent,hang='70mm','-40mm'
        when /4/; indent,hang='70mm','-30mm'
        when /5/; indent,hang='70mm','-20mm'
        when /6/; indent,hang='70mm','-10mm'
        when /7/; indent,hang='70mm',  '0mm'
        when /8/; indent,hang='70mm', '10mm'
        when /9/; indent,hang='70mm', '20mm'
        end
      when /8/
        case @dob.hang
        when /0/; indent,hang='80mm','-80mm'
        when /1/; indent,hang='80mm','-70mm'
        when /2/; indent,hang='80mm','-60mm'
        when /3/; indent,hang='80mm','-50mm'
        when /4/; indent,hang='80mm','-40mm'
        when /5/; indent,hang='80mm','-30mm'
        when /6/; indent,hang='80mm','-20mm'
        when /7/; indent,hang='80mm','-10mm'
        when /8/; indent,hang='80mm',  '0mm'
        when /9/; indent,hang='80mm', '10mm'
        end
      when /9/
        case @dob.hang
        when /0/; indent,hang='90mm','-90mm'
        when /1/; indent,hang='90mm','-80mm'
        when /2/; indent,hang='90mm','-70mm'
        when /3/; indent,hang='90mm','-60mm'
        when /4/; indent,hang='90mm','-50mm'
        when /5/; indent,hang='90mm','-40mm'
        when /6/; indent,hang='90mm','-30mm'
        when /7/; indent,hang='90mm','-20mm'
        when /8/; indent,hang='90mm','-10mm'
        when /9/; indent,hang='90mm',  '0mm'
        end
      end
      "\\begin{ParagraphHang}{#{indent}}{#{hang}}#{@dob.tmp} \\end{ParagraphHang}}"
    end
    def indent
      indent=case @dob.indent
      when /1/; '0mm'
      when /2/; '10mm'
      when /3/; '20mm'
      when /4/; '30mm'
      when /5/; '40mm'
      when /6/; '50mm'
      when /7/; '60mm'
      when /8/; '70mm'
      when /9/; '80mm'
      end
      "\\begin{ParagraphIndent}{#{indent}}#{@dob.tmp} \\end{ParagraphIndent}}"
    end
    def bullet
      blt=if @dob.indent
        indent=case @dob.indent
        when /1/; '0em'
        when /2/; '1.0em'
        when /3/; '2.0em'
        when /4/; '3.0em'
        when /5/; '4.0em'
        when /6/; '5.0em'
        when /7/; '6.0em'
        when /8/; '7.0em'
        when /9/; '8.0em'
        else      '-1.0em'
        end
        "\\begin{Bullet}{#{indent}}$\\txtbullet$\\hspace{\\enspace}#{@dob.tmp}\\end{Bullet}"
      else
        "\\begin{Bullet}{-5mm}$\\txtbullet$\\hspace{\\enspace}#{@dob.tmp}\\end{Bullet}"
      end
      blt
    end
    def symbol_graphic
      dir=SiSU_Env::Info_env.new(@md.fns)
      image='c_' + /<:=\s*(\S+?)\s*>/m.match(@txt).captures.join + '.png' #watch
      if FileTest.file?("#{dir.path.image_source_include}/#{image}")
        @txt.gsub!(/<:=\s*(\S+?)\s*>/,
          "\\includegraphics*[width=11pt]{#{dir.path.image_source_include}/c_\\1.png}")
      else
        SiSU_Screen::Ansi.new(@md.opt.cmd,"ERROR - image:",%{"#{image}" missing},"search path: #{dir.path.image_source_include}").error2 unless @md.opt.cmd =~/q/
        @txt.gsub!(/#{Mx[:lnk_o]}\S+\.(png|jpg|gif).+?#{Mx[:lnk_c]}#{Mx[:url_o]}\S+?#{Mx[:url_c]}/,'') # fragile match operator\\ fragile !
      end
    end
    def image
      dir=SiSU_Env::Info_env.new(@md.fns)
      image,m=/#{Mx[:lnk_o]}\s*(\S+)\s+.+?width=``(\d+)''.+?#{Mx[:lnk_c]}/m.match(@txt).captures
      width=m[1] || '100'
      width=width.to_i*0.4
      image_source=if @md.fns =~/\.(?:ssm\.)?sst$/ \
      and FileTest.file?("#{dir.path.image_source_include_local}/#{image}")
        dir.path.image_source_include_local
      elsif @md.fns =~/\.-ss[tm]$/ \
      and FileTest.file?("#{dir.path.image_source_include_remote}/#{image}")
        dir.path.image_source_include_remote
      elsif FileTest.file?("#{dir.path.image_source_include}/#{image}")
        dir.path.image_source_include
      else
        SiSU_Screen::Ansi.new(@md.opt.cmd,"ERROR - image:",%{"#{image}" missing},"search locations: #{dir.path.image_source_include_local},#{dir.path.image_source_include_remote} and #{dir.path.image_source_include}").error2 unless @md.opt.cmd =~/q/
        nil
      end
      if image_source #CHECK
        @txt.gsub!(/#{Mx[:lnk_o]}\s*(\S+)\s+.+?#{Mx[:lnk_c]}/,
          @center_begin + "\\includegraphics*[width=#{width}pt]{#{image_source}/\\1}" + @center_end )
      else @txt.gsub!(/#{Mx[:lnk_o]}\s*(\S+)\s+.+?#{Mx[:lnk_c]}/,'\1}')
      end
    end
    def png(ps='') #fc missing image check
      dir=SiSU_Env::Info_env.new(@md.fns)
      # messy clean up
      z=@txt[/#{Mx[:lnk_o]}(\S.+?)#{Mx[:lnk_c]}(?:image|png)/,1].strip if @txt =~ /#{Mx[:lnk_o]}\S.+?#{Mx[:lnk_c]}(?:image|png)/ # match operator for z \\ fragile !
      if z #debug 2004w14
        image=z[/(\S+?\.(?:png|jpg|gif)\b)/m]
        image.gsub!(/\\/,'')
        width=if z =~ /\d+x\d*/
          w=(z[/\s(\d+)x\d*/,1]).to_i
          w*0.8
        else '100' #revisit, is bug for small images/icons
        end
        width='380' if width.to_i > 380
        c=z[/``(.+?)''/m]
      end
      hsp="\n{\\color{mywhite} .}&~\n" # ~ character for hardspace
      caption="{\\\\\\\ \n\\begin{scriptsize}#{hsp*3}#{c}\\end{scriptsize}&}" if c
      image_source=if @md.fns =~/\.(?:ssm\.)?sst$/ \
      and FileTest.file?("#{dir.path.image_source_include_local}/#{image}")
        dir.path.image_source_include_local
      elsif @md.fns =~/\.-ss[tm]$/ \
      and FileTest.file?("#{dir.path.image_source_include_remote}/#{image}")
        dir.path.image_source_include_remote
      elsif FileTest.file?("#{dir.path.image_source_include}/#{image}")
        dir.path.image_source_include
      else
        unless image.nil? \
        or image.length < 2
          SiSU_Screen::Ansi.new(@md.opt.cmd,"ERROR - image:",%{"#{image}" missing},"search locations: #{dir.path.image_source_include_local},#{dir.path.image_source_include_remote} and #{dir.path.image_source_include}").error2 unless @md.opt.cmd =~/q/
        end
        nil
      end
      if image_source
        @txt.gsub!(/#{Mx[:lnk_o]}\S+\.(png|jpg|gif).+?#{Mx[:lnk_c]}(image|png)/, # fragile match operator\\ fragile !
          "#{@center_begin}\n\\includegraphics*[width=#{width}pt]{#{image_source}/#{image}}#{caption}#{@center_end}")
      else @txt.gsub!(/#{Mx[:lnk_o]}\S+\.(png|jpg|gif).+?#{Mx[:lnk_c]}(image|png)/,'')
      end
    end
    def url_str_internal(str,idx=nil)
      map_nametags=SiSU_Particulars::Combined_singleton.instance.get_map_nametags(@md).nametags_map #p map_nametags
      rgx_url_generic=/#{Mx[:lnk_o]}.+?#{Mx[:lnk_c]}#{Mx[:rel_o]}\S+?#{Mx[:rel_c]}/m
      rgx_url_relative=/#{Mx[:lnk_o]}.+?#{Mx[:lnk_c]}#{Mx[:rel_o]}:\S+?#{Mx[:rel_c]}/m
      rgx_url_internal=/#{Mx[:lnk_o]}.+?#{Mx[:lnk_c]}#{Mx[:rel_o]}#?\S+?#{Mx[:rel_c]}/m
      while str =~/#{Mx[:lnk_o]}([^#{Mx[:lnk_o]}#{Mx[:lnk_c]}]+)#{Mx[:lnk_c]}#{Mx[:rel_o]}:(\S+?)#{Mx[:rel_c]}/m
        link,url=$1,$2
        link,url=link.strip,url.strip
        link.gsub!(/&/,"#{Xx[:protect]}&")
        url="#{@env.url.root}/" + url
        str.sub!(/#{Mx[:lnk_o]}[^#{Mx[:lnk_o]}#{Mx[:lnk_c]}]+#{Mx[:lnk_c]}#{Mx[:rel_o]}:\S+?#{Mx[:rel_c]}/m,"#{@brace_rel.tex_open}\\href{#{url}}{#{link}}#{@brace_rel.tex_close}")
      end
      while str =~/#{Mx[:lnk_o]}([^#{Mx[:lnk_o]}#{Mx[:lnk_c]}]+)#{Mx[:lnk_c]}#{Mx[:rel_o]}#?(\S+?)#{Mx[:rel_c]}/m
        link,url=$1,$2
        link,url=link.strip,url.strip
        link.gsub!(/&/,"#{Xx[:protect]}&")
        url.gsub!(/\\_/,'_')
        ocn_lnk=if map_nametags[url] \
        and map_nametags[url][:ocn]
          map_nametags[url][:ocn]
        else nil
        end
        ocn_lnk=(url=~/^\d+$/ ? url : ocn_lnk)
        if ocn_lnk and not ocn_lnk.empty?
          idx \
          ? (str.sub!(rgx_url_internal,"\\hyperlink{#{ocn_lnk}}{#{link}}"))
          : (str.sub!(rgx_url_internal,"#{@brace_rel.tex_open}\\hyperlink{#{ocn_lnk}}{#{link}}#{@brace_rel.tex_close}"))
        else
          puts %{name tag: "#{url}" not found}
          str.sub!(rgx_url_internal,"#{link}")
        end
        #[keep] code that follows uses nametags directly, currently nametags converted to their ocn, related code: |texpdf.rb|@|hypertargets|
        #idx \
        #? (str.sub!(rgx_url_internal,"\\hyperlink{#{url}}{#{link}}")) \
        #: (str.sub!(rgx_url_internal,"#{@brace_rel.tex_open}\\hyperlink{#{url}}{#{link}}#{@brace_rel.tex_close}"))
      end
      str.gsub!(/#{Xx[:protect]}/,'')
      str
    end
    def url_str(str)
      rgx_url_generic=/#{Mx[:lnk_o]}.+?#{Mx[:lnk_c]}#{Mx[:url_o]}\S+?#{Mx[:url_c]}/m
      while str =~rgx_url_generic
        if str=~rgx_url_generic
          regx_url=%r/#{Mx[:lnk_o]}(.+?)#{Mx[:lnk_c]}#{Mx[:url_o]}(\S+?)#{Mx[:url_c]}/m
          z,url=regx_url.match(str).captures if str =~regx_url
          url=url.strip
          link=z.strip
          link.gsub!(/&/,"#{Xx[:protect]}&")
          str.sub!(rgx_url_generic,"#{@brace_rel.tex_open}\\href{#{url}}{#{link}}#{@brace_rel.tex_close}")
          str.gsub!(/#{Xx[:protect]}/,'')
          str
        else str
        end
        str
      end
      str
    end
    def url_with_txt(dob)
      rgx_url_generic=/#{Mx[:lnk_o]}.+?#{Mx[:lnk_c]}#{Mx[:url_o]}\S+?#{Mx[:url_c]}/m
      while dob.tmp =~rgx_url_generic
        if dob.tmp=~rgx_url_generic
          if dob.tmp =~/#{Mx[:lnk_o]}(?:.+?)#{Mx[:lnk_c]}#{Mx[:url_o]}\S+?#{Mx[:url_c]}/m
            regx_url=%r/#{Mx[:lnk_o]}(.+?)#{Mx[:lnk_c]}#{Mx[:url_o]}(\S+?)#{Mx[:url_c]}/m
            punctuate=/#{Mx[:lnk_o]}.+?#{Mx[:lnk_c]}#{Mx[:url_o]}\S+?#{Mx[:url_c]}/m.match(dob.tmp).captures.join
          else
            regx_url=%r/#{Mx[:lnk_o]}(.+?)#{Mx[:lnk_c]}#{Mx[:url_o]}(\S+?)#{Mx[:url_c]}/m
            punctuate=''
          end
          z,url=regx_url.match(dob.tmp).captures if dob.tmp =~regx_url
          url=url.strip
          link=z.strip
          link.gsub!(/&/,"#{Xx[:protect]}&")
          dob.tmp.sub!(rgx_url_generic,"#{@brace_rel.tex_open}\\href{#{url}}{#{link}}#{@brace_rel.tex_close}#{punctuate}")
          dob.tmp.gsub!(/#{Xx[:protect]}/,'')
          dob
        else dob
        end
        dob
      end
      dob
    end
    def urls_txt_and_images
      dob=@dob
      dir=SiSU_Env::Info_env.new(@md.fns)
      @dm={
        'a4'=>     @tx.a4.landscape.img_px,
        'letter'=> @tx.letter.landscape.img_px,
        'legal'=>  @tx.legal.landscape.img_px,
        'b5'=>     @tx.b5.landscape.img_px,
        'a5'=>     @tx.a5.landscape.img_px
      }
      images_hash={ }
      generic_rgx=/#{Mx[:lnk_o]}.+?#{Mx[:lnk_c]}(?:#{Mx[:url_o]}\S+?#{Mx[:url_c]}|image\b)/m
      rgx_url_generic=/#{Mx[:lnk_o]}.+?#{Mx[:lnk_c]}#{Mx[:url_o]}\S+?#{Mx[:url_c]}/m
      url_bare_rgx=/#{Mx[:url_o]}\S+?#{Mx[:url_c]}/m
      url_image_rgx=/#{Mx[:lnk_o]}[a-zA-Z0-9_\\-]+\.(?:png|jpg|gif).+?#{Mx[:lnk_c]}#{Mx[:url_o]}\S+?#{Mx[:url_c]}/m
      image_rgx=/#{Mx[:lnk_o]}[a-zA-Z0-9_\\-]+\.(?:png|jpg|gif).+?#{Mx[:lnk_c]}image/m
      @md.papersize_array.each do |ps|
        images_hash[ps] = dob.tmp
        while images_hash[ps] =~generic_rgx
          if dob.tmp =~rgx_url_generic \
          and dob.tmp !~/\.(?:png|jpg|gif)|#{Mx[:lnk_c]}image\b/m
            dob=url_with_txt(dob)
          elsif images_hash[ps]=~generic_rgx
            if dob.tmp=~rgx_url_generic
              if images_hash[ps] =~/#{Mx[:lnk_o]}(?:.+?)#{Mx[:lnk_c]}#{Mx[:url_o]}\S+?#{Mx[:url_c]}/m
                regx_url=%r/#{Mx[:lnk_o]}(.+?)#{Mx[:lnk_c]}#{Mx[:url_o]}(\S+?)#{Mx[:url_c]}/m
                punctuate=/#{Mx[:lnk_o]}.+?#{Mx[:lnk_c]}#{Mx[:url_o]}\S+?#{Mx[:url_c]}/m.match(images_hash[ps]).captures.join
              else
                regx_url=%r/#{Mx[:lnk_o]}(.+?)#{Mx[:lnk_c]}#{Mx[:url_o]}(\S+?)#{Mx[:url_c]}/m
                punctuate=''
              end
              z,url=regx_url.match(images_hash[ps]).captures if images_hash[ps] =~regx_url
              url=url.strip
            else
              if images_hash[ps] =~/#{Mx[:lnk_o]}(?:.+?)#{Mx[:lnk_c]}image\.[^'"\s]+?(?:[;.,]?(?:\s|$)|(?:\s|$))/m
                regx_url=%r/#{Mx[:lnk_o]}(.+?)#{Mx[:lnk_c]}image\.[^'"\s]+?(?:[;.,]?(?:\s|$)|(?:\s|$))/m
                punctuate=/#{Mx[:lnk_o]}.+?#{Mx[:lnk_c]}image\.[^'"\s]+?([;.,]?(?:\s|$))/m.match(images_hash[ps]).captures.join
              else
                regx_url=%r/#{Mx[:lnk_o]}(.+?)#{Mx[:lnk_c]}image/m
                punctuate=''
              end
              z=regx_url.match(images_hash[ps])[1] if images_hash[ps] =~regx_url
              url=''
            end
            if images_hash[ps] =~/#{Mx[:lnk_o]}\s*\S+\.?(?:png|jpg|gif)/m \
            and images_hash[ps]=~/\s+\d+x\d+(\s+|\s*#{Mx[:lnk_c]})/m
              image,x,y=z.scan(/\S+/)
              image.gsub!(/\\/,'')
              w=((z =~/\s(\d+)x\d*/) ? z[/\s(\d+)x\d*/,1] : 200)
              width={}
              width['a4'] =     ((w.to_i > @dm['a4'])     ? @dm['a4'] :     w)
              width['letter'] = ((w.to_i > @dm['letter']) ? @dm['letter'] : w)
              width['legal'] =  ((w.to_i > @dm['legal'])  ? @dm['legal'] :  w)
              width['a5'] =     ((w.to_i > @dm['a5'])     ? @dm['a5'] :     w)
              width['b5'] =     ((w.to_i > @dm['b5'])     ? @dm['b5'] :     w)
              c=z[/``(.+?)''/m,1]
              hsp="\n{\\color{mywhite} .}&~\n" # ~ character for hardspace
              caption=(c ?  "{\\\\\ \n\\begin{scriptsize}#{hsp*3}#{c}\\end{scriptsize}&}" : '')
            elsif images_hash[ps] =~/#{Mx[:lnk_o]}\s*(\S+\.?\.(?:png|jpg|gif))/m
              SiSU_Screen::Ansi.new(@md.opt.cmd,%{document built without image: "#{$1}" as image dimensions not provided (either image not found or neither imagemagick nor graphicsmagick is installed)?\n}).print_grey #unless @opt.cmd =~/q/
              images_hash[ps].gsub!(/#{Mx[:lnk_o]}\s*(\S+\.?\.(?:png|jpg|gif))/,'[image]')
            end
            if image #most images fc etc. #% clean up !
              if @md.fns =~/\.(?:ssm\.)?sst$/ \
              and FileTest.file?("#{dir.path.image_source_include_local}/#{image}")
                case images_hash[ps]
                when url_image_rgx
                  images_hash[ps].sub!(url_image_rgx,
                    "#{@center_begin}\\\n\\href{#{url}}{\\includegraphics*[width=#{width[ps]}pt]{#{dir.path.image_source_include_local}/#{image}}}#{caption} #{@center_end}")
                when image_rgx
                  images_hash[ps].sub!(image_rgx,
                    "#{@center_begin}\\\n\\includegraphics*[width=#{width[ps]}pt]{#{dir.path.image_source_include_local}/#{image}}#{caption} #{@center_end}")
                end
                images_hash[ps]
              elsif @md.fns =~/\.-ss[tm]$/ \
              and FileTest.file?("#{dir.path.image_source_include_remote}/#{image}")
                case images_hash[ps]
                when url_image_rgx
                  images_hash[ps].sub!(url_image_rgx,
                    "#{@center_begin}\\\n\\href{#{url}}{\\includegraphics*[width=#{width[ps]}pt]{#{dir.path.image_source_include_remote}/#{image}}}#{caption}#{@center_end}")
                when image_rgx
                  images_hash[ps].sub!(image_rgx,
                    "#{@center_begin}\\\n\\includegraphics*[width=#{width[ps]}pt]{#{dir.path.image_source_include_remote}/#{image}}#{caption}#{@center_end}")
                end
                images_hash[ps]
              elsif FileTest.file?("#{dir.path.image_source_include}/#{image}")
                case images_hash[ps]
                when url_image_rgx
                  images_hash[ps].sub!(url_image_rgx,
                    "#{@center_begin}\\\n\\href{#{url}}\n{\\includegraphics*[width=#{width[ps]}pt]{#{dir.path.image_source_include}/#{image}}}#{caption}#{@center_end}")
                when image_rgx
                  images_hash[ps].sub!(image_rgx,
                    "#{@center_begin}\\\n\\includegraphics*[width=#{width[ps]}pt]{#{dir.path.image_source_include}/#{image}}#{caption}#{@center_end}")
                end
                images_hash[ps]
              else
                SiSU_Screen::Ansi.new(@md.opt.cmd,"ERROR - image:",%{"#{image}" missing},"search locations: #{dir.path.image_source_include_local},#{dir.path.image_source_include_remote} and #{dir.path.image_source_include}").error2 unless @md.opt.cmd =~/q/
                if images_hash[ps] =~url_image_rgx \
                or images_hash[ps] =~image_rgx
                  images_hash[ps]=''
                end
                images_hash[ps]
              end
            else
              link=z.strip #[/(.+?)\\/m,1]
              images_hash[ps]="\\href{#{url}}{#{link}}#{punctuate}" if images_hash[ps] =~/#{Mx[:lnk_o]}.+?#{Mx[:lnk_c]}#{Mx[:url_o]}\S+?#{Mx[:url_c]}/
              images_hash[ps]
            end
          else images_hash[ps]
          end
          images_hash[ps] #=ocn_display(dob) + images_hash[ps]
        end #while loop
        images_hash
      end
      images_hash
      use_images_hash={}
      images_hash.each do |k,t|
        use_images_hash[k]={ l: t, p: t}
      end
      dob.tmp=use_images_hash
      dob
    end
    def title
      title=SiSU_TeX_Pdf::Special_characters.new(@md,@md.title.full).special_characters_safe
      "\n\\title{#{title}}"
    end
    def title_landscape
      title
    end
    def title_portrait
      title
    end
  end
  class Format_head
    require_relative 'prog_text_translation'        # prog_text_translation.rb
    def initialize(md,t_o)
      @md,@t_o=md,t_o
      @env=SiSU_Env::Info_env.new(@md.fns)
      if t_o.class==Hash
        @txt =t_o[:txt]            || nil
        @subtitle=t_o[:subtitle]   || nil
        @ps=t_o[:paper_size]       || nil
        @ocn=t_o[:ocn]             || nil
        @layout=t_o[:orientation]  || nil
      else
        p t_o.class
        p caller
      end
      @tx=SiSU_Env::Get_init.instance.tex
      @brace_url=SiSU_Viz::Skin.new.url_decoration
      @tex2pdf=@@tex3pdf ||=SiSU_Env::System_call.new.tex2pdf_engine
      @ps=@txt if @txt=~/(?:a4|letter|legal|book|a5|b5)/i
      @lang ||=SiSU_i18n::Languages.new #.list[@md.opt.lng][:xlp]
      @author=if defined? @md.creator.author \
      and @md.creator.author=~/\S+/
        SiSU_TeX_Pdf::Special_characters.new(@md,@md.creator.author).special_characters_safe
      else ''
      end
      @subject=if defined? @md.classify.subject \
      and @md.classify.subject=~/\S+/
        SiSU_TeX_Pdf::Special_characters.new(@md,@md.classify.subject).special_characters_safe
      else ''
      end
      @keywords=if defined? @md.classify.keywords \
      and @md.classify.keywords=~/\S+/
        SiSU_TeX_Pdf::Special_characters.new(@md,@md.classify.keywords).special_characters_safe
      else ''
      end
    end
    def tex_head_lang #babel 18n
      lang_char_arr=@md.i18n
      mainlang_char=if @md.i18n == Array \
      and @md.i18n.length > 0
        lang_char_arr.slice(0)
      else @md.opt.lng
      end
      mainlang=@lang.list[mainlang_char][:xlp]
      otherlang=if mainlang != 'english'
        [ @lang.list['en'][:xlp] ]
      else []
      end
      if lang_char_arr.length > 0
        lang_char_arr.slice(1..9).each { |ch| otherlang << @lang.list[ch][:xlp] }
        otherlang.uniq!
      end
      otherlang=otherlang.join(',')
      { mainlang: mainlang, otherlang: otherlang }
    end
    def tex_head_encode
      texpdf_font=if defined? @md.make.texpdf_font.main \
      and not @md.make.texpdf_font.main.nil? \
      and @md.make.texpdf_font.main=~/\S{3,}/
        @md.make.texpdf_font.main
      else @env.font.texpdf.main
      end
      texpdf_font_sans=if defined? @md.make.texpdf_font.sans \
      and not @md.make.texpdf_font.sans.nil? \
      and @md.make.texpdf_font.sans=~/\S{3,}/                                  # not used
        @md.make.texpdf_font.sans
      else @env.font.texpdf.sans
      end
      texpdf_font_serif=if defined? @md.make.texpdf_font.serif \
      and not @md.make.texpdf_font.serif.nil? \
      and @md.make.texpdf_font.serif=~/\S{3,}/                                 # not used
        @md.make.texpdf_font.serif
      else @env.font.texpdf.serif
      end
      texpdf_font_mono=if defined? @md.make.texpdf_font.mono \
      and not @md.make.texpdf_font.mono.nil? \
      and @md.make.texpdf_font.mono=~/\S{3,}/
        @md.make.texpdf_font.mono
      else @env.font.texpdf.mono
      end
      # you may wish to check selected font against avaiable fonts:
      # fc-list :outline -f "%{family}\n"
      case @tex2pdf
      when /xe/
        <<WOK
\\usepackage{polyglossia, ucs, fontspec, xltxtra, xunicode}
\\setmainlanguage{#{tex_head_lang[:mainlang]}}
\\setotherlanguage{#{tex_head_lang[:otherlang]}}
\\setmainfont{#{texpdf_font}}
\\setmonofont[Scale=0.85]{#{texpdf_font_mono}}
% \\setsansfont{#{texpdf_font_sans}}
% \\setromanfont{#{texpdf_font_serif}}
WOK
      when /pdf/
        if @md.file_encoding =~ /iso-?8859/i                                   #% iso8859
        <<WOK
% \\usepackage[latin1]{inputenc}
\\usepackage{fontspec}
WOK
        else                                                                   #% utf-8 assumed
        <<WOK
\\usepackage{babel}
\\usepackage{ucs}
\\usepackage[utf8x]{inputenc}
WOK
        end
      end
    end
    def tex_head_info
      generator="Generated by: #{@md.sisu_version[:project]} #{@md.sisu_version[:version]} of #{@md.sisu_version[:date_stamp]} (#{@md.sisu_version[:date]})" if @md.sisu_version[:version]
      lastdone="Last Generated on: #{Time.now}"
      rubyv="Ruby version: #{@md.ruby_version}"
      <<WOK
%% SiSU (Linux & Ruby - \"better ways\") LaTeX output
%% #{generator}
%% #{rubyv}
%% LaTeX output
%% #{lastdone}
%% SiSU http://www.jus.uio.no/sisu
WOK
    end
    def tex_head_paper_portrait(d)
      multicol=(@md.book_idx ? '\usepackage{multicol}' : '')
      <<WOK
#{tex_head_info}
\\documentclass[#{d[:fontsize]},#{d[:papertype]},titlepage]{scrartcl}        %with titlepage
\\setlength{\\textheight}{#{d[:textheight]}mm} \\setlength{\\textwidth}{#{d[:textwidth]}mm}
\\setlength{\\oddsidemargin}{#{d[:oddsidemargin]}} \\setlength{\\evensidemargin}{#{d[:evensidemargin]}}
\\setlength{\\topmargin}{#{d[:topmargin]}} \\setlength{\\headheight}{#{d[:headheight]}}
\\setlength{\\headsep}{#{d[:headsep]}}
\\setlength{\\marginparsep}{#{d[:marginparsep]}}
\\setlength{\\marginparwidth}{#{d[:marginparwidth]}}
#{multicol}
WOK
    end
    def tex_head_paper_landscape(d)
      <<WOK
#{tex_head_info}
\\documentclass[#{d[:fontsize]},#{d[:papertype]},landscape,titlepage,twocolumn]{scrartcl}        %with titlepage
\\setlength{\\textheight}{#{d[:textheight]}mm} \\setlength{\\textwidth}{#{d[:textwidth]}mm}
\\setlength{\\oddsidemargin}{#{d[:oddsidemargin]}} \\setlength{\\evensidemargin}{#{d[:evensidemargin]}}
\\setlength{\\topmargin}{#{d[:topmargin]}} \\setlength{\\headheight}{#{d[:headheight]}}
\\setlength{\\headsep}{#{d[:headsep]}}
\\setlength{\\columnsep}{#{d[:columnsep]}}
\\setlength{\\marginparsep}{#{d[:marginparsep]}}
\\setlength{\\marginparwidth}{#{d[:marginparwidth]}}
WOK
    end
    def tex_head_paper_portrait_dvi(d)
      <<WOK
#{tex_head_info}
\\documentclass[#{d[:fontsize]},#{d[:papertype]},titlepage]{scrartcl}      %with titlepage
\\setlength{\\textheight}{#{d[:textheight]}mm} \\setlength{\\textwidth}{#{d[:textwidth]}mm}
\\setlength{\\oddsidemargin}{#{d[:oddsidemargin]}} \\setlength{\\evensidemargin}{#{d[:evensidemargin]}}
\\setlength{\\topmargin}{#{d[:topmargin]}} \\setlength{\\headheight}{#{d[:headheight]}}
\\setlength{\\headsep}{#{d[:headsep]}}
\\setlength{\\marginparsep}{#{d[:marginparsep]}}
\\setlength{\\marginparwidth}{#{d[:marginparwidth]}}
WOK
    end
    def tex_head_paper_dimensions
      d={}
      case @layout
      when /portrait/
        d[:papertype],d[:fontsize]='a4paper','11pt'
        d[:oddsidemargin],d[:evensidemargin],d[:topmargin]='0mm','0mm','-12pt'
        d[:headheight],d[:headsep],d[:columnsep]='12pt','35pt',''
        d[:marginparsep],d[:marginparwidth]='4mm','8mm'
        case @ps #@md.papersize
        when /a4/i           #European default, SiSU default
          d[:papertype],d[:fontsize]='a4paper','12pt'
          d[:textheight],d[:textwidth]=@tx.a4.portrait.h,@tx.a4.portrait.w
        when /letter/i   #U.S. default
          d[:papertype],d[:fontsize]='letterpaper','12pt'
          d[:textheight],d[:textwidth]=@tx.letter.portrait.h,@tx.letter.portrait.w
        when /legal/i     #U.S. alternative
          d[:papertype],d[:fontsize]='legalpaper','12pt'
          d[:textheight],d[:textwidth]=@tx.legal.portrait.h,@tx.legal.portrait.w
        when /book|b5/i   #book default - larger
          d[:papertype],d[:fontsize]='b5paper','11pt'
          d[:oddsidemargin],d[:evensidemargin],d[:topmargin]='-4mm','-4mm','-36pt'
          d[:headheight],d[:headsep],d[:columnsep]='12pt','20pt',''
          d[:textheight],d[:textwidth]=@tx.b5.portrait.h,@tx.b5.portrait.w
        when /a5/i
          d[:papertype],d[:fontsize]='a5paper','11pt'
          d[:oddsidemargin],d[:evensidemargin],d[:topmargin]='-4mm','-4mm','-36pt'
          d[:headheight],d[:headsep],d[:columnsep]='11pt','12pt',''
          d[:marginparsep],d[:marginparwidth]='4mm','6mm'
          d[:textheight],d[:textwidth]=@tx.a5.portrait.h,@tx.a5.portrait.w
        else           #default currently A4
          d[:papertype],d[:fontsize]='a4paper','12pt'
          d[:textheight],d[:textwidth]=@tx.a4.portrait.h,@tx.a4.portrait.w
        end
      when /landscape/
        d[:papertype],d[:fontsize]='a4paper','11pt'
        d[:oddsidemargin],d[:evensidemargin],d[:topmargin]='6mm','6mm','-12mm'
        d[:headheight],d[:headsep],d[:columnsep]='12pt','20pt','40pt'
        d[:marginparsep],d[:marginparwidth]='4mm','8mm'
        case @ps #@md.papersize
        when /a4/i                            #European default, SiSU default
          d[:papertype],d[:fontsize]='a4paper','11pt'
          d[:textheight],d[:textwidth]=@tx.a4.landscape.h,@tx.a4.landscape.w
        when /letter/i                    #U.S. default
          d[:papertype],d[:fontsize]='letterpaper','11pt'
          d[:textheight],d[:textwidth]=@tx.letter.landscape.h,@tx.letter.landscape.w
        when /legal/i #U.S. alternative
          d[:papertype],d[:fontsize],d[:columnsep]='legalpaper','11pt','48pt'
          d[:textheight],d[:textwidth]=@tx.legal.landscape.h,@tx.legal.landscape.w
        when /book|b5/i       #book default - larger
          d[:papertype],d[:fontsize],d[:columnsep]='b5paper','11pt','35pt'
          d[:textheight],d[:textwidth]=@tx.b5.landscape.h,@tx.b5.landscape.w
        when /a5/i
          d[:papertype],d[:fontsize],d[:columnsep]='a5paper','10pt','32pt'
          d[:textheight],d[:textwidth]=@tx.a5.landscape.h,@tx.a5.landscape.w
        else                            #default currently A4
          d[:papertype],d[:fontsize]='a4paper','12pt'
          d[:textheight],d[:textwidth]=@tx.a4.landscape.h,@tx.a4.landscape.w
        end
      end
      d
    end
    def tex_head_paper
      case @layout
      when /portrait/
        tex_head_paper_portrait(tex_head_paper_dimensions)
      when /landscape/
        tex_head_paper_landscape(tex_head_paper_dimensions)
      end
    end
    def tex_head_pdftex_dvi
      color=case @layout
      when /portrait/
      <<WOK
  colorlinks=true,
  urlcolor=myblack,
  filecolor=myblack,
  linkcolor=myblack,
WOK
      when /landscape/
      <<WOK
  colorlinks=true,
  urlcolor=myblue,    % \\href{...}{...}   external url
  filecolor=mygreen,  % \\href{...}     local file
  linkcolor=myred,    % \\href{...} and \\pageref{...}
WOK
      end
      if @layout =~/portrait|landscape/
      <<WOK
\\usepackage{alltt}
\\usepackage{thumbpdf}
\\usepackage[#{@tex2pdf},
  #{color.strip}
  pdftitle={#{@txt}},
  pdfauthor={#{@author}},
  pdfsubject={#{@subject}},
  pdfkeywords={#{@keywords}},
  pageanchor=true,
  plainpages=true,
  pdfpagelabels=true,
  pagebackref,
  bookmarks=true,
  bookmarksopen=true,
  pdfmenubar=true,
  pdfpagemode=UseOutline,
  pdffitwindow=true,
  pdfwindowui=true,
  plainpages=false,
%  pdfusetitle=true,
%  pdfpagelayout=SinglePage,
%  pdfpagelayout=TwoColumnRight,
%  pdfpagelayout=TwoColumnLeft,
%  pdfstartpage=3,
  pdfstartview=FitH
]
{hyperref}
%% trace lost characters
% \\tracinglostchars = 1
% \\tracingonline = 1
\\usepackage[usenames]{color}
\\definecolor{myblack}{rgb}{0,0,0}
\\definecolor{myred}{rgb}{0.75,0,0}
\\definecolor{mygreen}{rgb}{0,0.5,0}
\\definecolor{myblue}{rgb}{0,0,0.5}
\\definecolor{mywhite}{rgb}{1,1,1}
\\usepackage{url}
%\\usepackage{breakurl}
WOK
      elsif @txt =~/dvi/
      <<WOK
\\usepackage{alltt}
  #{color.strip}
  pageanchor=true,
  plainpages=true,
  pagebackref,
  bookmarks=true,
  bookmarksopen=true,
  plainpages=false,
]
{hyperref}
\\usepackage[usenames]{color}
\\definecolor{myblack}{rgb}{0,0,0}
\\definecolor{myred}{rgb}{0.75,0,0}
\\definecolor{mygreen}{rgb}{0,0.5,0}
\\definecolor{myblue}{rgb}{0,0,0.5}
\\definecolor{mywhite}{rgb}{1,1,1}
\\usepackage{url}
%\\usepackage{breakurl}
WOK
      end
    end
    def tex_head_codeblock(codeblock_box_type)
      codeblock_box=if codeblock_box_type=='listings'
        <<WOK
\\usepackage{listings}
\\usepackage{color}
\\usepackage{textcomp}
WOK
      elsif codeblock_box_type=='boites'
        "\\usepackage{boites}"
      else
        "\\usepackage{boites}"
      end
      codeblock_box
    end
    def tex_head_misc
      <<WOK
\\usepackage{textcomp}
\\usepackage[parfill]{parskip}
\\usepackage[normalem]{ulem}
\\usepackage{soul}
\\usepackage{longtable}
\\usepackage{graphicx}
\\makeatletter
\\parindent0pt
%\\usepackage{mathptmx}
\\usepackage{amssymb}
% amssymb used for backslash
WOK
    end
    def document_head_with_orientation(codeblock_box_type)
      endnotes=("\\usepackage{endnotes}" if @txt =~/endnotes?/)||'' #not implemented see also def endnotes
      @lang.list[@md.i18n[0]][:xlp]
      <<WOK
#{tex_head_paper}
#{tex_head_encode}
#{tex_head_pdftex_dvi}
#{tex_head_misc}
#{tex_head_codeblock(codeblock_box_type)}
\\setcounter{secnumdepth}{2}
\\setcounter{tocdepth}{4}
\\makeatletter
#{endnotes}
\\usepackage[multiple,ragged]{footmisc}
\\setlength\\footnotemargin{12pt}
\\usepackage[para]{manyfoot}
\\DeclareNewFootnote{A}
%\\DeclareNewFootnote[para]{A}
\\newenvironment{ParagraphIndent}[1]%
{
\\begin{list}{}{%
\\setlength\\topsep{0pt}%
\\addtolength{\\leftmargin}{#1}
\\setlength\\parsep{0pt plus 1pt}%
}
\\item[]
}
{\\end{list}}

\\newenvironment{ParagraphHang}[2]%
{
\\begin{list}{}{%
\\setlength\\topsep{0pt}%
\\addtolength{\\leftmargin}{#1}
\\itemindent=#2
\\setlength\\parsep{0pt plus 1pt}%
}
\\item[]
}
{\\end{list}}

\\newenvironment{Bullet}[1]%
{
\\begin{list}{}{%
\\setlength\\topsep{0pt}%
\\addtolength{\\leftmargin}{#1}
\\itemindent=-1em
\\setlength\\parsep{0pt plus 1pt}%
}
\\item[]
}
{\\end{list}}
\\usepackage{fancyhdr}
\\lhead{}
\\renewcommand{\\part}{\\\@startsection
  {part}{1}{-2mm}%
  {-\\baselineskip}{0.5\\baselineskip}%
  {\\bfseries\\large\\upshape\\raggedright}}
\\renewcommand{\\section}{\\\@startsection
  {section}{2}{-2mm}%
  {-\\baselineskip}{0.5\\baselineskip}%
  {\\bfseries\\large\\upshape\\raggedright}}
\\renewcommand{\\subsection}{\\\@startsection
  {subsection}{3}{-2mm}%
  {-\\baselineskip}{0.5\\baselineskip}%
  {\\bfseries\\large\\upshape\\raggedright}}
\\renewcommand{\\subsubsection}{\\\@startsection
  {subsubsection}{4}{-2mm}%
  {-\\baselineskip}{0.5\\baselineskip}%
  {\\normalfont\\normalsize\\bfseries\\raggedright}}
\\renewcommand{\\paragraph}{\\\@startsection
  {paragraph}{5}{-2mm}%
  {-\\baselineskip}{0.5\\baselineskip}%
  {\\normalfont\\normalsize\\itshape\\raggedright}}
\\renewcommand{\\subparagraph}{\\\@startsection
  {subparagraph}%{6}%{-2mm}%
  {-\\baselineskip}{0.5\\baselineskip}%
  {\\normalfont\\normalsize\\itshape\\raggedright}}
% \\makeatother
\\selectlanguage{#{@lang.list[@md.i18n[0]][:xlp]}}
WOK
    end
    def a4generic
    end
  end
  class Special_characters
    def initialize(md,str,is='')
      @md,@txt,@is=md,str,is
      @brace_url=SiSU_Viz::Skin.new.url_decoration
      @tex2pdf=@@tex3pdf ||=SiSU_Env::System_call.new.tex2pdf_engine
    end
    def xetex_code_listings(str,is='')                                  # ~ ^ $ & % _ { }  #LaTeX special characters - KEEP list
      word=str.scan(/\S+|\n/) #unless line =~/^(?:@\S|%+\s)/
      para_array=[]
      str=if word
        word.each do |w| # _ - / # | : ! ^ ~
          w.gsub!(/#{Mx[:gl_o]}#lt#{Mx[:gl_c]}/,'<'); w.gsub!(/#{Mx[:gl_o]}#gt#{Mx[:gl_c]}/,'>')
          w.gsub!(/[\\]?~/,'~')
          w.gsub!(/[#{Mx[:br_line]}#{Mx[:br_paragraph]}]/,"\n") #watch
          w.gsub!(/#{Mx[:gl_o]}#(?:126|152)#{Mx[:gl_c]}/,'~') #126 usual
          w.gsub!(/\\?\||#{Mx[:gl_o]}#124#{Mx[:gl_c]}/,'|') #unless is=='code' #unless w=~/<~\d+;(?:[ohmu]|[0-6]:)\d+;\w\d+>/ # | SiSU not really special sisu character but done, also LaTeX
          para_array << w
        end
        str=para_array.join(' ')
        str=str.strip unless is=='code'
        str
      else ''
      end
      str.gsub(/\s*#{Mx[:mk_o]}:name#\S+?#{Mx[:mk_c]}\s*/,' ')
      str.gsub!(/.+?<-#>/,'')
      str.gsub!(/#{Mx[:br_eof]}/,'')
      str.gsub!(/#{Mx[:br_endnotes]}/,'')
      #problem sequence ->
      str.gsub!(/&(?:lt|#060);/,'<')                                         # < SiSU special character also LaTeX
      str.gsub!(/#{Mx[:gl_o]}#(?:gt|062)#{Mx[:gl_c]}/,'>')                   # > SiSU special character also LaTeX
      str.gsub!(/#{Mx[:gl_o]}#123#{Mx[:gl_c]}/,'{')                   # { SiSU special character also LaTeX
      str.gsub!(/#{Mx[:gl_o]}#125#{Mx[:gl_c]}/,'}')                  # } SiSU special character also LaTeX
      str.gsub!(/#{Mx[:gl_o]}#(?:126|152)#{Mx[:gl_c]}/,'~')             # ~ SiSU special character also LaTeX
      str.gsub!(/#{Mx[:gl_o]}#035#{Mx[:gl_c]}/,'#')                           # # SiSU special character also LaTeX
      str.gsub!(/#{Mx[:gl_o]}#033#{Mx[:gl_c]}/,'!')                            # ! SiSU not really special sisu character but done, also LaTeX
      #str.gsub!(/(^|\s)\*\s/,'\1\asterisk ')                                   # * should you wish to escape astrisk e.g. describing \*{bold}*
      str.gsub!(/#{Mx[:gl_o]}#042#{Mx[:gl_c]}/,'*')                           # * should you wish to escape astrisk e.g. describing \*{bold}*
      str.gsub!(/#{Mx[:gl_o]}#045#{Mx[:gl_c]}/,'-')                            # - SiSU special character also LaTeX
      str.gsub!(/#{Mx[:gl_o]}#043#{Mx[:gl_c]}/,'+')                            # + SiSU special character also LaTeX
      str.gsub!(/#{Mx[:gl_o]}#044#{Mx[:gl_c]}/,',')                            # + SiSU special character also LaTeX
      str.gsub!(/#{Mx[:gl_o]}#038#{Mx[:gl_c]}/,'&') #unless @txt=~/<:code>/  # / SiSU special character also LaTeX
      str.gsub!(/#{Mx[:gl_o]}#047#{Mx[:gl_c]}/,'/')                       # / SiSU special character also LaTeX
      str.gsub!(/#{Mx[:gl_o]}#092#{Mx[:gl_c]}/,'\\')               # \ SiSU special character also LaTeX
      str.gsub!(/#{Mx[:gl_o]}#095#{Mx[:gl_c]}/,'_')                # _ SiSU special character also LaTeX
      str.gsub!(/#{Mx[:gl_o]}#124#{Mx[:gl_c]}/,'|')                            # | SiSU not really special sisu character but done, also LaTeX
      str.gsub!(/#{Mx[:gl_o]}#058#{Mx[:gl_c]}/,':')                            # : SiSU not really special sisu character but done, also LaTeX
      str.gsub!(/#{Mx[:gl_o]}#094#{Mx[:gl_c]}|\^/,'^')                    # ^ SiSU not really special sisu character but done, also LaTeX
      ##watch placement, problem sequence ^
      str.gsub!(/<sup><font face=symbol>&atild;<\/font><\/sup>/,' ')
      str.gsub!(/\\copy(right|mark)?/,'<=copymark>') # ok problem with superscript
      str
    end
    def xetex_special_characters_1(str,is='')                                  # ~ ^ $ & % _ { }  #LaTeX special characters - KEEP list
      #str=Iconv.conv('ISO-8859-1', 'UTF-8', @txt) # `require': iconv will be deprecated in the future, use String#encode instead.
      word=str.scan(/\S+|\n/) #unless line =~/^(?:@\S|%+\s)/
      para_array=[]
      str=if word
        word.each do |w| # _ - / # | : ! ^ ~
          if w !~/https?:/ \
          and w=~/\/\S+?\// \
          and w.length > 6
            w.gsub!(/([_.\/])/,'\1\-')
          end
          w.gsub!(/#{Mx[:gl_o]}#lt#{Mx[:gl_c]}/,'<'); w.gsub!(/#{Mx[:gl_o]}#gt#{Mx[:gl_c]}/,'>')
          w.gsub!(/[\\]?~/,'<=tilde>')
          w.gsub!(/[#{Mx[:br_line]}#{Mx[:br_paragraph]}]/,' \newline ') #watch
          w.gsub!(/#{Mx[:gl_o]}#(?:126|152)#{Mx[:gl_c]}/,'<=tilde>') #126 usual
          w.gsub!(/\\?\||#{Mx[:gl_o]}#124#{Mx[:gl_c]}/,'\pipe') #unless is=='code' #unless w=~/<~\d+;(?:[ohmu]|[0-6]:)\d+;\w\d+>/ # | SiSU not really special sisu character but done, also LaTeX
          if w !~/#{Mx[:rel_o]}/ \
          and w !~/#{Mx[:gl_o]}#/
            w.gsub!(/\#/,'<=hash>')
          end
          para_array << w
        end
        str=para_array.join(' ')
        str=str.strip unless is=='code'
        str
      else ''
      end
      str.gsub(/\s*#{Mx[:mk_o]}:name#\S+?#{Mx[:mk_c]}\s*/,' ')
      str.gsub!(/.+?<-#>/,'')
      str.gsub!(/#{Mx[:br_eof]}/,'')
      str.gsub!(/#{Mx[:br_endnotes]}/,'')
      #problem sequence ->
      str.gsub!(/&(?:nbsp);|#{Mx[:nbsp]}/,'\hardspace') unless is=='code'      # < SiSU special character also LaTeX
      str.gsub!(/&(?:lt|#060);/,'\lt')                                         # < SiSU special character also LaTeX
      str.gsub!(/#{Mx[:gl_o]}#(?:gt|062)#{Mx[:gl_c]}/,'\gt')                   # > SiSU special character also LaTeX
      str.gsub!(/#{Mx[:gl_o]}#123#{Mx[:gl_c]}/,'\curlyopen')                   # { SiSU special character also LaTeX
      str.gsub!(/#{Mx[:gl_o]}#125#{Mx[:gl_c]}/,'\curlyclose')                  # } SiSU special character also LaTeX
      str.gsub!(/#{Mx[:gl_o]}#(?:126|152)#{Mx[:gl_c]}/,'<=tilde>')             # ~ SiSU special character also LaTeX
      str.gsub!(/#{Mx[:gl_o]}#035#{Mx[:gl_c]}/,'\#')                           # # SiSU special character also LaTeX
      str.gsub!(/#{Mx[:gl_o]}#033#{Mx[:gl_c]}/,'!')                            # ! SiSU not really special sisu character but done, also LaTeX
      str.gsub!(/(^|\s)\*\s/,'\1\asterisk ')                                   # * should you wish to escape astrisk e.g. describing \*{bold}*
      str.gsub!(/#{Mx[:gl_o]}#042#{Mx[:gl_c]}/,'\*')                           # * should you wish to escape astrisk e.g. describing \*{bold}*
      str.gsub!(/#{Mx[:gl_o]}#045#{Mx[:gl_c]}/,'-')                            # - SiSU special character also LaTeX
      str.gsub!(/#{Mx[:gl_o]}#043#{Mx[:gl_c]}/,'+')                            # + SiSU special character also LaTeX
      str.gsub!(/#{Mx[:gl_o]}#044#{Mx[:gl_c]}/,',')                            # + SiSU special character also LaTeX
      str.gsub!(/#{Mx[:gl_o]}#038#{Mx[:gl_c]}/,'<=amp>') #unless @txt=~/<:code>/  # / SiSU special character also LaTeX
      str.gsub!(/#{Mx[:gl_o]}#047#{Mx[:gl_c]}/,'\slash')                       # / SiSU special character also LaTeX
      str.gsub!(/#{Mx[:gl_o]}#092#{Mx[:gl_c]}/,'\textbackslash')               # \ SiSU special character also LaTeX
      str.gsub!(/#{Mx[:gl_o]}#095#{Mx[:gl_c]}/,'<=underscore>')                # _ SiSU special character also LaTeX
      str.gsub!(/#{Mx[:gl_o]}#124#{Mx[:gl_c]}/,'|')                            # | SiSU not really special sisu character but done, also LaTeX
      str.gsub!(/#{Mx[:gl_o]}#058#{Mx[:gl_c]}/,':')                            # : SiSU not really special sisu character but done, also LaTeX
      str.gsub!(/#{Mx[:gl_o]}#094#{Mx[:gl_c]}|\^/,'\caret')                    # ^ SiSU not really special sisu character but done, also LaTeX
      ##watch placement, problem sequence ^
      str.gsub!(/<sup><font face=symbol>&atild;<\/font><\/sup>/,' ')
      str.gsub!(/\\copy(right|mark)?/,'<=copymark>') # ok problem with superscript
      str
    end
    def xetex_special_characters_2(str,is='')
      str.gsub!(/#{Mx[:gl_o]}#156#{Mx[:gl_c]}/,'\oe ')
      str.gsub!(/\$/,'\$')
      str.gsub!(/\#/,'\#')
      str.gsub!(/\%/,'\%')
      str.gsub!(/\~/,'\~') #revist, should not be necessary to mark remaining tildes
      if str !~/^\s*#{Mx[:lnk_o]}.+?#{Mx[:lnk_c]}image\s/
        str.gsub!(/_/,'\_')
      end
      str.gsub!(/\{/,'\{')
      str.gsub!(/\}/,'\}')
      if is=='code'
        str.gsub!(/&/,'{\\\&}')
        str.gsub!(/\\~(\\\{)/,'{$\tilde$}\1')
        str.gsub!(/(\\\})\\~/,'\1{$\tilde$}')
        str.gsub!(/\\~(\[)/,'{$\tilde$}\1')
        str.gsub!(/(\])\\~/,'\1{$\tilde$}')
        str.gsub!(/<=tilde>/,'{$\tilde$}')
        str.gsub!(/<=hash>/,'{\#}')
      else
        str.gsub!(/&nbsp;|#{Mx[:nbsp]}/,'~') # ~ character for hardspace
        str.gsub!(/&/,'<=amp>')
      end
      str.gsub!(/&\S+?;/,' ')
      str.gsub!(/§/u,'\S') #latex: space between next character not preserved? #str.gsub!(/§ /,'\S ')
      str.gsub!(/£/u,'\pounds')
      str.gsub!(/<a href=".+?">/,' ')
      str.gsub!(/<\/a>/,' ')
      str.gsub!(/((?:^|\s)#{Mx[:lnk_c]})#{Mx[:url_o]}(\S+?)#{Mx[:url_c]}/,
        '\1\begin{scriptsize}\url{\2}\end{scriptsize}\3') #special case \{ e.g. \}http://url
      str.gsub!(/#{Mx[:url_o]}\\_(\S+?)#{Mx[:url_c]}/,
        '\begin{scriptsize}\url{\1}\end{scriptsize}') #special case \{ e.g. \}http://url
      str.gsub!(/#{Mx[:url_o]}_(\S+?)#{Mx[:url_c]}/,
        '\begin{scriptsize}\\url{\1}\end{scriptsize}') #specially escaped url no decoration
      unless is=='code'
        str.gsub!(/(^|#{Mx[:gl_c]}|\s)((?:https?|file|ftp):\/\/\S+?\.[^'"\s]+?)([;.,]?(?=\s|$))/,
          "\\1#{@brace_url.tex_open}\\begin{scriptsize}\\url{\\2}\\end{scriptsize}#{@brace_url.tex_close}\\3") #url matching with decoration <url> positive lookahead, sequence issue with { linked }http://url cannot use \b at start
      else #code-block: angle brackets special characters, note _ already escaped
        str.gsub!(/\\_</m,'{\UseTextSymbol{OML}{<}}')
        str.gsub!(/\\_>/m,'{\UseTextSymbol{OML}{>}}')
      end
      str.gsub!(/<:ee>/,'')
      str.gsub!(/<!>/,' ')
      #proposed change, insert, but may be redundant
      str.gsub!(/<(br|p)>|<\/\s*(br|p)>|<(br|p)\s*\/>/," #{Tex[:backslash]*2} ") # Work Area
      str.gsub!(/#{Mx[:fa_bold_o]}(.+?)#{Mx[:fa_bold_c]}/,'\begin{bfseries}\1 \end{bfseries}')
      str.gsub!(/<h\d+>(.+?)<\/h\d+>/,'\begin{bfseries}\1 \end{bfseries}')
      str.gsub!(/#{Mx[:fa_italics_o]}(.+?)#{Mx[:fa_italics_c]}/,'\emph{\1}')
      str.gsub!(/#{Mx[:fa_underscore_o]}(.+?)#{Mx[:fa_underscore_c]}/,'\uline{\1}') # ulem
      str.gsub!(/#{Mx[:fa_cite_o]}(.+?)#{Mx[:fa_cite_c]}/,"``\\1''") # quote #CHECK
      str.gsub!(/#{Mx[:fa_insert_o]}(.+?)#{Mx[:fa_insert_c]}/,'\uline{\1}') # ulem
      str.gsub!(/#{Mx[:fa_strike_o]}(.+?)#{Mx[:fa_strike_c]}/,'\sout{\1}') # ulem
      str.gsub!(/#{Mx[:fa_superscript_o]}(.+?)#{Mx[:fa_superscript_c]}/,"\$^{\\textrm{\\1}}\$")
      str.gsub!(/#{Mx[:fa_subscript_o]}(.+?)#{Mx[:fa_subscript_c]}/,"\$_{\\textrm{\\1}}\$")
      str.gsub!(/#{Mx[:fa_monospace_o]}(.+?)#{Mx[:fa_monospace_c]}/,'\begin{monosp}\1\end{monosp}')
      unless is=='code'
        str.gsub!(/"(.+?)"/,'“\1”')  # quote marks / quotations open & close " need condition exclude for code
        str.gsub!(/\s+"/,' “')                                # open "
        str.gsub!(/^(#{Mx[:lv_o]}[1-6-]:\S*?#{Mx[:lv_c]}|<.+?>)?\s*"/,'\1“') #fix Mx[:lv_o] # open "
        str.gsub!(/"(\s|\.|,|:|;)/,'”\1')                     # close "
        str.gsub!(/"(#{Mx[:lv_o]}[1-6-]:\S*?#{Mx[:lv_c]}|<.+?>)?\s*$/,'”\1') #fix Mx[:lv_o] # close "
        str.gsub!(/"(\.|,)/,'”')                              # close "
        str.gsub!(/\s+'/,' `')                                # open '
        str.gsub!(/^(#{Mx[:lv_o]}[1-6-]:\S*?#{Mx[:lv_c]}|<.+?>)?\s*'/,'\1`') #fix Mx[:lv_o] # open '
      end
      str.gsub!(/(<font.*?>|<\/font>)/,'')
      str.gsub!(/\s*#{Mx[:fa_superscript_o]}(\S+?)#{Mx[:fa_superscript_c]}/,'^\1')
      str
    end
    def xetex_special_characters_3(str)
      str.gsub!(/<br(\s*[^\/][^>])/,'\1') # clean up, incredibly messy :-( footnote indents, problems if match exists in ordinary paragraphs? check! Work Area 200501 a bit tricky as must be able to match multiple times, and to clean remainder
      str.gsub!(/([^<][^b][^r]\s+)\/>/,'\1') # clean up, incredibly messy :-( footnote indents, problems if match exists in ordinary paragraphs? check! Work Area 200501 a bit tricky as must be able to match multiple times, and to clean remainder
      while str =~/(https?:\/\/\S+?)(?:<=tilde>\S+)+/ #tilde in urls \href treated differently from text #FIX
        str.gsub!(/(https?:\/\/\S+?)(?:<=tilde>(\S+))+/,'\1~\2')
      end
      str.gsub!(/<=tilde>/,'{$\tilde$}')
      str.gsub!(/(https?:\/\/\S+?)(?:(?:<=hash>)(\S+))+/,'\1#\2') #hash in urls \href treated differently from text #FIX
      str.gsub!(/<=hash>/,'{\#}')
      while str =~/(https?:\/\/\S+?)(?:<=amp>\S+)+/ #amp in urls \href treated differently from text #FIX
        str.gsub!(/(https?:\/\/\S+?)(?:<=amp>(\S+))+/,'\1&\2')
      end
      str.gsub!(/<=amp>/,'{\\\&}') #changed ... 2005
      str.gsub!(/<=copymark>\s*(.+)/,
        '^\copyright \textnormal{\1} \2') # watch likely to be problematic
      str
    end
    def special_characters_code_fix(str)
      str.gsub!(/<=tilde>/,'{$\tilde$}')
      str
    end
    def special_characters_unsafe_1(str) #depreciated, make obsolete
      # some substitutions are sequence sensitive, rearrange with care.
      str.gsub!(/\\textbackslash (copyright|clearpage|newpage)/,"\\\\\\1")  #kludge bad solution, find out where tail is sent through specChar !
      str
    end
    def special_characters                                                     #special characters - some substitutions are sequence sensitive, rearrange with care.
      str,is=@txt,@is
      str=xetex_special_characters_1(str,is) unless str.nil?
      str=special_characters_unsafe_1(str) unless str.nil? #xetex_special_characters_unsafe_1(@txt)
      str=xetex_special_characters_2(str,is) unless str.nil? #issues with xetex
      str=xetex_special_characters_3(str) unless str.nil?
      @txt=str
    end
    def special_word_break_points
      str=@txt
      str.gsub!(/([_,.;:\/|=])/,'\1\-')
      str.gsub!(/(--)(\S{4,})/,'\1\-\2')
      @txt=str
    end
    def special_number_break_points
      str=@txt
      str=str.gsub(/([0-9a-f]{8})/i,'\1\-')
      @txt=str
    end
    def special_characters_safe                                                #special characters - some substitutions are sequence sensitive, rearrange with care.
      str,is=@txt,@is
      str=xetex_special_characters_1(str,is) unless str.nil?
      str=xetex_special_characters_2(str,is) unless str.nil? # remove this to start with, causes issues
      @txt=str
    end
    def characters_code_listings                                   #special characters - some substitutions are sequence sensitive, rearrange with care.
      str,is=@txt,@is
      str=xetex_code_listings(str,is) unless str.nil?
      @txt=str
    end
    def special_characters_code
      str=@txt
      str.gsub!(/ \\\\([ #{Mx[:br_nl]}]+|$)/,' \textbackslash\textbackslash\hardspace\1')
      str
    end
  end
  class Use_TeX
    attr_accessor :url,:txt,:date
    def initialize(md)
      @md=md
      @vz=SiSU_Env::Get_init.instance.skin
      @date=SiSU_Env::Info_date.new # #{@date.year}
      @copymark='{\\begin{footnotesize}\\raisebox{1ex}{\\copyright}\\end{footnotesize}}'
      @brace_url=SiSU_Viz::Skin.new.url_decoration
    end
    def skip
      "\n\\vspace*{\\smallskipamount} \n"
    end
    def paraskip_normal
      '\setlength{\parskip}{1ex plus0.5ex minus0.2ex}'
    end
    def paraskip_small
      '\setlength{\parskip}{0.5ex plus0.2ex minus0.1ex}'
    end
    def paraskip_tiny
      '\setlength{\parskip}{0.1ex plus0.1ex minus0.1ex}'
    end
    def skip_small
      "\\smallskip{}"
    end
    def skip_small_vspace
      "\n\\vspace*{\\smallskipamount} \n"
    end
    def skip_small_footnote
    end
    def skip_medium
      "\n\\medskip{}\n\n"
    end
    def skip_dummy
      "\n"
    end
    def header
      "\\lhead[ ]{ }\n" +
      "\\chead[ \\fancyplain{} \\bfseries \\footnotesize \\leftmark ]{ \\fancyplain{} \\bfseries \\footnotesize \\rightmark }\n" +
      "\\rhead[ ]{ }\n"
    end
    def footer
      base_prog_txt=if @md.base_program
        case @md.base_program
        when /kdissert/i; " \\\\ \\href{http://freehackers.org/~tnagy/kdissert/}{Kdissert}"
        else ''
        end
      else ''
      end
      "\\lfoot[\\textrm{\\thepage}]{\\tiny \\href{#{@vz.url_footer_signature}}{#{@vz.txt_signature}}#{base_prog_txt}}\n" +
      "\\cfoot[\\href{#{@vz.url_home}}{#{@vz.url_txt}}]{\\href{#{@vz.url_home}}{#{@vz.url_txt}}}\n" +
      "\\rfoot[\\tiny \\href{#{@vz.url_sisu}}{#{@vz.txt_signature}}]{\\textrm{\\thepage}}\n"
    end
    def site
      if not @vz.url_home.empty? \
      and not @vz.url_txt.empty?
        "\n\\date{\\begin{footnotesize} copy @ \\href{#{@vz.url_home}}{#{@vz.url_txt}} \\end{footnotesize}}"
      else ''
      end
    end
    def sitename                                                               #owners site, eg freeculture, free.for.all, gutenberg etc.
      "\\href{#{@vz.url_home}}{#{@vz.txt_home}}"
    end
    def owner_chapter
      "Contact Details for Original Promulgating Authority"
    end
    #BOOK standard dimensions - 229x156
    def newpage(orientation)
      case orientation
      when /landscape/ # using longtable latex package
<<WOK
\\clearpage
WOK
      when /portrait/
<<WOK
\\newpage
WOK
      end
    end
    def sisu_rights
      v=SiSU_Env::Info_version.instance.get_version
      base_prog_txt=if @md.base_program
        case @md.base_program
        when /kdissert/i; "\n\\\\ This document prepared using \\href{http://freehackers.org/~tnagy/kdissert/}{Kdissert \\ http://freehackers.org/~tnagy/kdissert/ } \\\\ Kdissert is Document Mapping software by Thomas Nagy"
        else ''
        end
      else ''
      end
<<WOK
\\\\ ~
{\\begin{footnotesize}#{base_prog_txt}
\\\\ Generated by \\href{http://www.jus.uio.no/sisu}{SiSU} \\begin{tiny}[ #{v[:project]} #{v[:version]} of #{v[:date_stamp]} ]\\end{tiny} \\href{http://www.jus.uio.no/sisu}{www.jus.uio.no/sisu}
\\\\ Copyright #{@copymark} 1997, current #{@date.year_static} Ralph Amissah, All Rights Reserved.
\\\\ SiSU is software for document structuring, publishing and search (with object citation numbering), \\href{http://www.sisudoc.org}{www.sisudoc.org}
\\\\ SiSU is released under \\href{http://www.fsf.org/licenses/gpl.html}{GPL 3 } or later, #{@brace_url.tex_open}\\href{http://www.fsf.org/licenses/gpl.html}{http://www.fsf.org/licenses/gpl.html}#{@brace_url.tex_close}.
{\\end{footnotesize}
\\\\
WOK
    end
    def doc_sc_info_footnote_full
<<WOK
\\footnote{%\nGenerated by \\href{http://www.jus.uio.no/sisu}{SiSU \\ www.jus.uio.no/sisu }\\ \\newline \\scriptsize{Document version information: \\emph{sourcefile} \\uline{#{@md.fnstex}}; \\emph{version} \\uline{#{@md.sc_number}}; \\emph{date} \\uline{#{@md.sc_date}}; \\emph{time} \\uline{#{@md.sc_time}}}}
WOK
    end
    def doc_sc_info_footnote_brief
      " \\footnote{%\nGenerated by \\href{http://www.jus.uio.no/sisu}{SiSU} \\ \\href{http://www.jus.uio.no/sisu}{www.jus.uio.no/sisu} \\newline \\href{http://www.sisudoc.org}{www.sisudoc.org} \\\n}"
    end
    def doc_sc_info
      v=SiSU_Env::Info_version.instance.get_version
<<WOK
\\\\
{\\begin{footnotesize}
Document version information: \\\\
\\emph{sourcefile} \\uline{#{@md.fnstex}}; \\emph{version} \\uline{#{@md.sc_number}}; \\emph{date} \\uline{#{@md.sc_date}}; \\emph{time} \\uline{#{@md.sc_time}} \\\\
Generated by \\href{http://www.jus.uio.no/sisu}{SiSU www.jus.uio.no/sisu }\\- version information: \\\\
\\uline{ #{v[:project]} #{v[:version]} of #{v[:date_stamp]}}
\\end{footnotesize}}&
WOK
    end
    def doc_no_sc_info
      v=SiSU_Env::Info_version.instance.get_version
<<WOK
\\\\
{\\begin{small}
Document information: \\\\
\\emph{sourcefile} \\uline{#{@md.fnstex}} \\\\
Generated by \\href{http://www.jus.uio.no/sisu}{SiSU www.jus.uio.no/sisu } \\\\ version information: \\
\\uline{ #{v[:project]} #{v[:version]} of #{v[:date_stamp]}}

\\end{small}}&
WOK
    end
    def manifest_info
      url=@md.fnb.gsub(/(?:\\)*([$&~%_#}{^])/,'\\\\\1')
      fn=@md.fn[:manifest].gsub(/(?:\\)*([$&~%_#}{^])/,'\\\\\1')
<<WOK
{\\begin{footnotesize}
\\\\ For alternative output formats of this document check:
\\\\ #{@brace_url.tex_open}\\begin{scriptsize}\\href{#{@vz.url_root_http}/#{url}/#{fn}}{#{@vz.url_root_http}/#{url}/#{fn}}\\end{scriptsize}#{@brace_url.tex_close}
\\end{footnotesize}}&
WOK
    end
    def endnotes #not used should be inserted before MetaData section which preceeds doc_tail, but is "part of document"
<<WOK
\\subsection*{Endnotes}
\\addcontentsline{toc}{section}{Endnotes}
\\
\\listofendnotes
WOK
    end
    def doc_tail
      dir=SiSU_Env::Info_env.new(@md.fns)
      base_html="#{dir.url.root}/#{@md.fnb}"
      v=SiSU_Env::Info_version.instance.get_version
      sisu_ico=if FileTest.file?("#{dir.path.image_source_include}/sisu.png")
        "\\includegraphics*[width=60pt]{#{dir.path.image_source_include}/sisu.png}"
      else
        SiSU_Screen::Ansi.new(@md.opt.cmd,'WARNING - image directory or image(s) missing:', %{"#{dir.path.image_source_include}"} ).warn unless @md.opt.cmd =~/q/
        " SiSU "
      end
      url=@md.fnb.gsub(/(?:\\)*([$&~%_#}{^])/,'\\\\\1')
<<WOK
\\begin{english}[variant=british]
\\subsection*{Information on this document copy and an unofficial List of Some web related information and sources}
\\addcontentsline{toc}{section}{Information on this document copy and an unofficial List of Some web related information and sources}
\\\\
\"Support Open Standards and Software Libré for the Information Technology Infrastructure\" RA\\subsubsection*{Information on this document copy #{site}}
\\addcontentsline{toc}{subsection}{Information on this document copy}
{\\begin{footnotesize}
\\\\ Generated by \\href{http://www.jus.uio.no/sisu/}{SiSU} found at \\href{http://www.jus.uio.no/sisu/}{www.jus.uio.no/sisu} \\begin{tiny}[ #{v[:project]} #{v[:version]} #{v[:date_stamp]} ]\\end{tiny} \\href{http://www.sisudoc.org}{www.sisudoc.org}. SiSU is software for document structuring, publishing and search (using SiSU: object citation numbering, markup, meta-markup, and system) Copyright #{@copymark} 1997, current #{@date.year_static} Ralph Amissah, All Rights Reserved.
\\\\ SiSU is released under \\href{http://www.fsf.org/licenses/gpl.html}{GPL 3 } or later (\\href{http://www.fsf.org/licenses/gpl.html}{www.fsf.org/licenses/gpl.html}). {\\end{footnotesize}
{\\begin{small}
\\\\ W3 since October 3 1993 \\href{http://www.jus.uio.no/sisu/}{#{sisu_ico}}SiSU 1997, current #{@date.year_static}. \\\\ #{sitename} presentations at \\begin{scriptsize}#{site}\\end{scriptsize} \\\\ \\\\ #{@md.title.full} \\textbf{pdf} versions can be found at: \\\\
{\\end{small}
\\\\ #{@brace_url.tex_open}\\begin{scriptsize}\\url{#{@vz.url_root_http}/#{url}/#{@md.fn[:pdf_p]}}\\end{scriptsize}#{@brace_url.tex_close} \\\\
#{@brace_url.tex_open}\\begin{scriptsize}\\url{#{@vz.url_root_http}/#{url}/#{@md.fn[:pdf_l]}}\\end{scriptsize}#{@brace_url.tex_close} \\\\
\\\\\n#{@md.title.full} \\textbf{html} versions may be found at: \\\\
#{@brace_url.tex_open}\\begin{scriptsize}\\url{#{@vz.url_root_http}/#{url}/#{@md.fn[:toc]}}\\end{scriptsize}#{@brace_url.tex_close} or \\\\
#{@brace_url.tex_open}\\begin{scriptsize}\\url{#{@vz.url_root_http}/#{url}/#{@md.fn[:doc]}}\\end{scriptsize}#{@brace_url.tex_close}
\\\\
\\\\
\\href{#{@vz.url_root_http}/#{url}/#{@md.fn[:manifest]}}{SiSU Manifest} of document output and metadata may be found at: \\\\
#{@brace_url.tex_open}\\begin{scriptsize}\\url{#{@vz.url_root_http}/#{url}/#{@md.fn[:manifest]}}\\end{scriptsize}#{@brace_url.tex_close}
\\\\
\\\\
 #{sitename} found at: \\begin{scriptsize}#{site}\\end{scriptsize}\\subsubsection*{Links that may be of interest at #{@vz.txt_home} and elsewhere:}
\\addcontentsline{toc}{subsection}{Links that may be of interest}
\\end{english}
WOK
    end
    def mail_tail #not retested, the old mail_tail is commented out and appended to this program
      dir=SiSU_Env::Info_env.new(@md.fns)
<<WOK
\\subsection*{Mail sender details}
\\addcontentsline{toc}{subsection}{Mail sender details}
\\\\
Mail from: ralph@amissah.com\\\\
44 20 8789 3452\\\\
44 77 9669 4448
\\\\
 \"Support Open Standards and Open Sources for the Information Technology Infrastructure\" RA
\\subsubsection*{Information on this document copy #{site}\\copyright}
Presentations' look and feel generated by \\href{http://www.jus.uio.no/sisu/}{SiSU Scribe} \\href{http://www.jus.uio.no/sisu/}{http://www.jus.uio.no/sisu/} programmed in Ruby on Debian/Gnu/Linux by Copyright \\copyright Ralph Amissah, W3 since October 3 1993 \\href{http://www.jus.uio.no/sisu/}{\\includegraphics*[width=35pt]{#{dir.path.image_source_include}/sisu.png}}for #{sitename}. SiSU Scribe (sisu information structuring unit) produces Electronic Documents, i.e. it generates structured output for use in a number of file formats, including the pdf file produced here.
WOK
    end
  end
end
__END__