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path: root/lib/sisu/html_minitoc.rb
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#encoding: utf-8
=begin
- Name: SiSU

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

  - 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
module SiSU_HTML_MiniToc
  require_relative 'html_tune'                        # html_tune.rb
    include SiSU_HTML_Tune
  class TocMini
    @@seg_mini=nil
    @@seg_url=''
    @@firstseg=nil
    def initialize(md,data)
      @md,@data=md,data
      @pat_strip_heading_name=/<a name="h?\d.*?">(.+?)<\/a>/
      @tell=SiSU_Screen::Ansi.new(@md.opt.act[:color_state][:set]) if @md
    end
    def songsheet
      if (@md.opt.act[:verbose][:set]==:on \
      || @md.opt.act[:verbose_plus][:set]==:on \
      || @md.opt.act[:maintenance][:set]==:on)
        SiSU_Screen::Ansi.new(@md.opt.act[:color_state][:set],'Toc').txt_grey
      end
      toc=nil
      @toc=[]
      @data.each do |txt|
        if txt.is ==:heading \
        || txt.is ==:heading_insert
          txt.obj=txt.obj.gsub(/(?:#{Mx[:en_a_o]}|#{Mx[:en_b_o]}).+?(?:#{Mx[:en_a_c]}|#{Mx[:en_b_c]})/m,''). #remove endnotes from toc
            gsub(/<a name="-\d+" href="#_\d+">&nbsp;<sup>\d+<\/sup>&nbsp;<\/a>/,'').
            gsub(@pat_strip_heading_name,'\1')
            #gsub(/(.*?)<a name="(\d+)"><\/a>(.*)/,'\1') #2002w42 altered gsub - problematic? - suspect
          toc=case txt.ln
          when 0 then SiSU_HTML_MiniToc::TocMini.new(@md,txt).level_0
          when 1 then SiSU_HTML_MiniToc::TocMini.new(@md,txt).level_1
          when 2 then SiSU_HTML_MiniToc::TocMini.new(@md,txt).level_2
          when 3 then SiSU_HTML_MiniToc::TocMini.new(@md,txt).level_3
          when 4 then SiSU_HTML_MiniToc::TocMini.new(@md,txt).level_4
          when 5 then SiSU_HTML_MiniToc::TocMini.new(@md,txt).level_5
          when 6 then SiSU_HTML_MiniToc::TocMini.new(@md,txt).level_6
          else
          end
          @toc << toc
        end
      end
      @toc
    end
  protected
    def level_concordance
      format_head_toc=SiSU_HTML_Format::HeadToc.new(@md)
      @@seg_mini << format_head_toc.mini_seg_concordance
    end
    def level_metadata
      format_head_toc=SiSU_HTML_Format::HeadToc.new(@md)
      @@seg_mini << format_head_toc.mini_seg_metadata
    end
    def level_word_index
      format_head_toc=SiSU_HTML_Format::HeadToc.new(@d0c)
      @@seg_mini << format_head_toc.mini_concordance
    end
    def level_0
      txt=@data
      if (txt.is ==:heading \
      || txt.is ==:heading_insert) \
      && txt.ocn !=0
        txt.obj=txt.obj.gsub(@pat_strip_heading_name,'\1')
      end
      txt_obj={ txt: txt.obj }
      format_toc=SiSU_HTML_Format::FormatToc.new(@md,txt_obj)
      toc_mini=format_toc.mini_lev0
      toc_mini
    end
    def level_1
      txt=@data
      if (txt.is ==:heading \
      || txt.is ==:heading_insert) \
      && txt.ocn !=0
        txt.obj=txt.obj.gsub(@pat_strip_heading_name,'\1')
      end
      title=unless txt.obj =~/Document Information/ then txt.obj
      else
        link='metadata'
        %{<b><a href="#{link}#{@md.lang_code_insert}#{Sfx[:html]}">#{txt.obj}</a></b>}
      end
      txt_obj={ txt: title }
      format_toc=SiSU_HTML_Format::FormatToc.new(@md,txt_obj)
      toc_mini=if txt.name =~/^meta/ \
      and txt.obj=~/Document Information/
        format_toc.mini_tail
      else format_toc.mini_lev1
      end
      toc_mini
    end
    def level_2
      txt=@data
      if (txt.is ==:heading \
      || txt.is ==:heading_insert) \
      && txt.ocn !=0
        txt.obj=txt.obj.gsub(@pat_strip_heading_name,'\1')
      end
      txt_obj={ txt: txt.obj }
      format_toc=SiSU_HTML_Format::FormatToc.new(@md,txt_obj)
      toc_mini=format_toc.mini_lev2
      toc_mini
    end
    def level_3
      txt=@data
      txt_obj={ txt: txt.obj }
      format_toc=SiSU_HTML_Format::FormatToc.new(@md,txt_obj)
      toc_mini=format_toc.mini_lev3
      toc_mini
    end
    def level_4
      txt=@data
      unless txt.obj =~/~metadata/
        if txt.ln ==4
          fnh={
            fn: txt.name,
          }
          f=@md.file.base_filename.html_seg(fnh)
          seg_link=%{  <a href="#{f}" target="_top">
    #{txt.obj}
  </a> }
          @@seg_url=txt.name
        elsif txt.obj =~/\d+.\d+.\d+.\d+|\d+.\d+.\d+|\d+.\d+|\d+/
          fn,hd=/^(\d+.\d+.\d+.\d+|\d+.\d+.\d+|\d+.\d+|\d+)(.*)/.match(dob.obj)[1,2]
          fnh={
            fn: fn,
          }
          f=@md.file.base_filename.html_seg(fnh)
          seg_link=%{<a href="#{f}" target="_top">#{fn} #{hd}</a> }
        end
        txt_obj={ txt: seg_link }
        format_toc=SiSU_HTML_Format::FormatToc.new(@md,txt_obj)
        toc_mini=format_toc.mini_lev4
        toc_mini
      end
    end
    def level_5
      txt=@data
      if (txt.is ==:heading \
      || txt.is ==:heading_insert) \
      && txt.ocn !=0
        txt.obj=txt.obj.gsub(@pat_strip_heading_name,'\1')
      end
      fnh={
        fn: @@seg_url,
      }
      f=@md.file.base_filename.html_seg(fnh)
      lnk_n_txt=%{  <a href="#{f}##{txt.ocn}">
    #{txt.obj}
  </a>}
        txt_obj={ txt: lnk_n_txt }
        format_toc=SiSU_HTML_Format::FormatToc.new(@md,txt_obj)
        toc_mini=format_toc.mini_lev5
      toc_mini
    end
    def level_6
      txt=@data
      if (txt.is ==:heading \
      || txt.is ==:heading_insert) \
      && txt.ocn !=0
        txt.obj=txt.obj.gsub(@pat_strip_heading_name,'\1')
      end
      fnh={
        fn: @@seg_url,
      }
      f=@md.file.base_filename.html_seg(fnh)
      lnk_n_txt=%{  <a href="#{f}##{txt.ocn}">
    #{txt.obj}
  </a>}
        txt_obj={ txt: lnk_n_txt }
        format_toc=SiSU_HTML_Format::FormatToc.new(@md,txt_obj)
        toc_mini=format_toc.mini_lev6
      toc_mini
    end
  end
end
__END__