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# encoding: utf-8
=begin

* Name: SiSU

** Description: documents, structuring, processing, publishing, search
*** texinfo processing

** Author: Ralph Amissah
  [ralph@amissah.com]
  [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 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]

** 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]

** Git
  [http://git.sisudoc.org/gitweb/?p=code/sisu.git;a=summary]
  [http://git.sisudoc.org/gitweb/?p=code/sisu.git;a=blob;f=lib/sisu/texinfo.rb;hb=HEAD]

=end
module SiSU_TexInfo
  require_relative 'html'                               # html.rb
  require_relative 'dp'                                 # dp.rb
    include SiSU_Param
  #include Stamp ... needed removed arbitrarily 2005w05/1 (warnings about undefined flags)
  require_relative 'texinfo_format'                     # texinfo_format.rb
  include SiSU_TexInfoFormat
  @tex_file=[]
  @@tabular="{tabular}"
  @@table_pagebreak_counter,@@tex_endnote_call_counter,@@tex_table_flag,@@tex_counter,@@tex_column,@@tex_columns,@@counting=0,0,0,0,0,0,0
  @@column_instruct,@@tex_line_mode,@@tex_word_mode,@@start_table,@@line_mode='','','','',''
  @@n,@@copyright,@@tableheader=nil,nil,nil
  @@tex_col_w=[]
  @@tex_pattern_margin_number="\\\\marginpar.+?\s+"
  class Source
    include SiSU_Param
    include SiSU_TexInfo
    def initialize(opt)
      @opt=opt
      @md=SiSU_Param::Parameters.new(@opt).get
      @env=SiSU_Env::InfoEnv.new(@opt.fns)
    end
    def directories
      begin
        case @opt.fns
        when /\.(?:-|ssm\.)?sst$/
          Dir.mkdir(@env.path.output) unless FileTest.directory?("#{@env.path.output}")
          Dir.mkdir(@env.processing_path.texi) unless FileTest.directory?(@env.processing_path.texi)
        end
      rescue
        SiSU_Screen::Ansi.new(opt,$!,$@).rescue do
          __LINE__.to_s + ':' + __FILE__
        end
      ensure
      end
    end
    def read
      begin
        song
      ensure
        Dir.chdir(@opt.f_pth[:pth])
      end
    end
    def song
      begin
        tool=(@opt.act[:verbose][:set]==:on \
        || @opt.act[:verbose_plus][:set]==:on \
        || @opt.act[:maintenance][:set]==:on) \
        ? "cd #{@md.file.output_path.texinfo.dir} && #{@env.program.texinfo} #{@md.file.base_filename.info}; cd -"
        : "[#{@opt.f_pth[:lng_is]}] #{@opt.fno}"
        (@opt.act[:verbose][:set]==:on \
        || @opt.act[:verbose_plus][:set]==:on \
        || @opt.act[:maintenance][:set]==:on) \
        && ! @opt.act[:quiet][:set]==:on \
        ? SiSU_Screen::Ansi.new(
            @opt.act[:color_state][:set],
            'TexInfo',
            tool
          ).green_hi_blue
        : SiSU_Screen::Ansi.new(
            @opt.act[:color_state][:set],
            'TexInfo',
            tool
          ).green_title_hi
        @md=SiSU_Param::Parameters.new(@opt).get
        directories
        @marshalfile=SiSU_Env::InfoFile.new(@opt.fns).marshal.ao_content
        if FileTest.file?(@marshalfile)==true
          File.open(@marshalfile) { |f| @@tuned_file=Marshal.load(f)}
          #tell.meta_verse_skipped if @opt.selections.str =~/[vVM]/
        else
          tex_array=IO.readlines(@opt.fns,'')
          SiSU_Metaverse.songsheet(tex_array)
        end
        tex_array=@@tuned_file
        TeXinfoMake.new(@md,tex_array).songsheet
        tex_array=''
      rescue; STDERR.puts SiSU_Screen::Ansi.new(@opt.act[:color_state][:set],$!,$@).rescue
      ensure
      end
    end
  end
  class TeXinfoMake
    include SiSU_Param
    include SiSU_TexInfoFormat
    @@tex_1='(?:.+?)+~' #?? debug
    @@tabular="{tabular}"
    @@tex_pattern_margin_number="\\\\marginpar.+?\s+"
    def initialize(md,data)
      @md,@data=md,data
      @env=SiSU_Env::InfoEnv.new(@md.fns)
      @f=SiSU_Env::FileOp.new(@md)
    end
    def songsheet
      begin
        data=@data
        data=pre(data)
        data=endnote(data)
        data,head=markup(data)
        objs_txt=tail(data)
        doc_txt=[head,objs_txt]
        output(doc_txt)
        makeinfo #KEEP reinstate when fixed #%
        place_info
      rescue; STDERR.puts SiSU_Screen::Ansi.new(@md.opt.act[:color_state][:set],$!,$@).rescue
      ensure
      end
    end
    def pre(data)
      data_new=[]
      data.each do |dob|
        # DEBUG 2003w16 this is a kludge, because i could not get parameters
        # from param, Sort out ... revert to more elegant solution
        if dob.is =='table'
          @@flag['tables']='y' # KLUDGE get from param
        end
        dob.obj=dob.obj.gsub(/<:p[bn]>/,'').
          gsub(/#{Mx[:lnk_o]}(.+?)#{Mx[:lnk_c]}#{Mx[:url_o]}(\S+?)#{Mx[:url_c]}/,'\1(\2 [linked to:] \3)').
          gsub(/(^|#{Mx[:gl_c]}|\s)\{(.+?)\}((?:https?|file):\/\/\S+)/,'\1(\2 [linked to:] \3)')
        do_mono=SiSU_TexInfoFormat::Texinfo.new(@md,dob)
        dob.obj=do_mono.spec_char(dob.obj)
        data_new << dob
      end
      data_new
    end
    def endnote(data)
      data_new=[]
      data.each do |dob|
        if dob.of==:para \
        || dob.of==:block
          dob.obj=dob.obj.gsub(/\s*#{Mx[:en_a_o]}(?:\d+)\s+(.+?)#{Mx[:en_a_c]}/m,' @footnote{ \1} ').
            gsub(/\s*#{Mx[:en_a_o]}(\*+)\s+(.+?)#{Mx[:en_a_c]}/m,' @footnote{ \1} ')
        end
        data_new << dob
      end
      data_new
    end
    def poem
      data,data_new=@data,[]
      @tex_file=[]
      @@counting=0
      data.each do |dob|
        if dob.is ==:code
          @@flag['code']=true
          @@counting=1
        end
        if dob.is ==:verse
          @@flag['poem']=1
        end
        if @@flag['code']
          if @@flag['code'] \
          && (dob.obj =~ /#{Mx[:gr_o]}code[-_](?:end|close)#{Mx[:gr_c]}/) #watch change not tested 200501 #fix
            @@flag['code']=false
          end
          if @@flag['code'] \
          && (dob.obj =~ /\S/)
            sub_array=dob.obj.dup
            @@line_mode=sub_array.scan(/.+/)
            Tune.code_lines(@@line_mode)
            dob.obj=@@line_mode.join
          end
        elsif @@flag['poem']==1
          if @@flag['poem']==1 \
          && (dob.obj =~ /#{Mx[:gr_o]}verse[-_](?:end|close)#{Mx[:gr_c]}/) #watch change not tested 200501 #fix
            @@flag['poem']=0
          end
          if @@flag['poem']==1 \
          && (dob.obj =~ /\S/)
            sub_array=dob.obj.dup
            @@line_mode=sub_array.scan(/.+/)
            Tune.code_lines(@@line_mode)
            dob.obj=@@line_mode.join
          end
        end
        @tex_file << dob.obj
        data_new << dob
      end
      data_new
    end
    def code_lines
      data,data_new=@data,[]
      data.each do |line|
        if (line =~ /\S/) \
        && (line !~ /#{Mx[:gr_o]}(code|verse).+/) #fix
          line=if @@flag['code']
            line.gsub(/^\s*(.+)/m,"\\noindent \\marginpar\[left-text\]{\\begin{tiny}#{@@counting}\\end{tiny}}\\1\\")
            @@counting+=1 if @@flag['code']
          else line.gsub(/(.+)/m,'\noindent\1')
          end
        end
        data_new << line
      end
    end
    def tables
      data,data_new=@data,[]
      @tex_file=[]
      @@tableheader=0
      data.each do |dob|
        if dob.obj =~ /#{Mx[:tc_p]}|#{Mx[:gr_o]}T/ui #fix
          do_mono=SiSU_TexInfoFormat::Texinfo.new(@md,dob)
          dob.obj=do_mono.longtable # using longtable latex package
        end
        @tex_file << dob.obj
        data_new << dob
      end
      data_new
    end
    def markup(data)
      data_new=[]
      @tex_file=[]
      @row_break='\\\\\\'
      @break_page="#{@row_break}\n#{@row_break} \n"
      @tex_file << SiSU_TexInfoFormat::Texinfo.new(@md).head
      mono=SiSU_TexInfoFormat::Texinfo.new(@md)
      @tex_file << mono.topnode(@md.title.full)
      texinfo_menu=[]
      n_menu,n_submenu=0,0
      @submenu,@subsubmenu={},{}
      data.each do |dob|
        if dob.is ==:heading \
        && (dob.ln.to_s =~ /^[0-3]$/)
          toc=SiSU_TexInfoFormat::Texinfo.new(@md,dob)
          texinfo_menu << toc.menu
        elsif dob.is ==:heading \
        && (dob.ln.to_s =~ /^[4-6]$/)
          toc=SiSU_TexInfoFormat::Texinfo.new(@md,dob)
          texinfo_menu << toc.menu
          case dob.ln
          when 4
            n_menu+=1
            @submenu[n_menu]=[]
          when 5
            n_submenu+=1
            @subsubmenu[n_menu]=[]
            @submenu[n_menu] << toc.menu
          when 6
            n_submenu+=1
            @subsubmenu[n_submenu]=[]
            @subsubmenu[n_submenu] << toc.menu
          end
        else
          dob.obj=dob.obj.gsub(/\s*(?:<:?br>|<br \/>)\s*/,"\n\n")
        end
        data_new << dob
      end
      data=data_new
      texinfo_menu=texinfo_menu.compact
      texinfo_menu << "* Dublin Core::"
      @tex_file << texinfo_menu
      @tex_file << "* Index::\n" +
        "@end menu\n\n" +
        "@c %% 5\n\n"
      n_menu,n_submenu=0,0
      @@do_submenu,@@do_subsubmenu=1,1
      data_new=[]
      data.each do |dob|
        unless defined? dob.ln and dob.ln == (5..6)
          mono=SiSU_TexInfoFormat::Texinfo.new(@md,dob)
        end
        if dob.is==:heading
          case dob.ln
          when 0 then dob=mono.level0
          when 1 then dob=mono.level1
          when 2 then dob=mono.level2
          when 3 then dob=mono.level3
          when 4;
            @@n4_txt=dob.obj
            dob=mono.level4
            n_menu+=1
            @@do_submenu,@@do_subsubmenu=1,1
          when 5;
            n_submenu+=1
            @@do_subsubmenu=1
            @@n5_txt=dob.obj
            if @@do_submenu==1
              menu=SiSU_TexInfoFormat::TeXinfoTxt.new(@md,dob,@submenu[n_menu])
              dob.obj="#{menu.submenu}#{SiSU_TexInfoFormat::Texinfo.new(@md,dob,@@n4_txt).level5.obj}"
              @@do_submenu=0
            else dob.obj="#{SiSU_TexInfoFormat::Texinfo.new(@md,dob,@@n4_txt).level5.obj}"
            end
          when 6;
            if @@do_submenu==1
              menu=SiSU_TexInfoFormat::TeXinfoTxt.new(@md,dob,@submenu[n_menu])
              dob.obj="#{menu.submenu}#{SiSU_TexInfoFormat::Texinfo.new(@md,dob,@@n5_txt).level6.obj}"
              dob.obj="#{menu.subsubmenu}#{mono.level6.obj}"
              @@do_subsubmenu=0
            else dob.obj="#{SiSU_TexInfoFormat::Texinfo.new(@md,dob,@@n5_txt).level6.obj}"
            end
          end
        else
          if dob.obj !~/\S/
            dob.obj=nil
          else
            if dob.is==:para \
            && (dob.obj !~/#{Dx[:ocn_o]}#{dob.ocn}#{Dx[:ocn_c]}/)
              dob.obj=dob.ocn.is_a?(Fixnum) \
              ? "#{dob.obj} #{Dx[:ocn_o]}#{dob.ocn}#{Dx[:ocn_c]}\n\n" : "#{dob.obj}\n\n"
            end
          end
        end
        #%case with endnotes
        dob.obj=dob.obj.gsub(/\s*[0-8]\\+(\S+)?\s+/,' ') if dob.obj
        data_new << dob
      end
      [data_new, @tex_file]
    end
    def number_titles
      data,data_new=@data,[]
      @tex_file=[]
      data.each do |dob|
        if (@md.markup =~ /num_top/i) \
        && (dob.obj !~ /#{Rx[:meta]}/)
          if (dob.obj =~ /^[1-6]\\+(?:~\S+)?\s*<!h-.+?-!>/) \
          && (dob.obj !~ /<:\d-endnotes>/)
            header=dob.obj[/<!h-(.+?)-!>/m, 1].gsub(/-/m,'.')
            dob.obj=dob.obj.gsub(/^(?:[1-6]\\+(?:~\S+)|<:([12356]|4-.+?-)>)\s*<!h-.+?-!>/,
              "\\1 #{header} ")
          end
        elsif dob.obj=~ /<!h!>|<!h\d!>|<!h.+?!>|<!!h.+?!>/
          if dob.obj=~ /<!h-.+?-!>/
            dob.obj=dob.obj.gsub(/<!h-(.+?)-!>/,'\1 ')
          end
        end
        @tex_file << dob.obj
      end
      data_new << dob
    end
    def tail(data)
      tex=SiSU_TexInfoFormat::Texinfo.new(@md)
      objs_txt=[]
      data.each do |dob|
        if dob.obj \
        && (dob.is !=:structure \
        && dob.is !=:comment)
           objs_txt << dob.obj if dob.obj
        end
      end
      objs_txt << tex.dublincore << tex.tail
      objs_txt
    end
    def output(data)
      filename_texinfo=%{#{@env.processing_path.texi}/#{@md.fnb}.texinfo}
      file_texinfo=File.new(filename_texinfo,'w+')
      puts filename_texinfo if @md.opt.act[:maintenance][:set]==:on
      data.each {|s| (file_texinfo.puts s,"\n") if s}
      file_texinfo.close
    end
    def makeinfo
      if @md.fns =~/\.(?:-|ssm\.)?sst$/
        m=/(.+?)\.((?:-|ssm\.)?sst)$/.match(@md.fns)
        fnb,sfx=m[1],m[2]
        pwd=Dir.pwd
        case sfx
        when /(?:-|ssm\.)?sst$/
          @env=SiSU_Env::InfoEnv.new(@md.fns,@md.opt.selections.str)
          Dir.chdir(@env.processing_path.texi)
          texinfo=SiSU_Env::SystemCall.new("#{fnb}.texinfo")
          texinfo.makeinfo
        end
        Dir.chdir(pwd)
      end
      def place_info
        unless FileTest.directory?(@f.output_path.texinfo.dir)
          FileUtils::mkdir_p(@f.output_path.texinfo.dir)
        end
        info_src=%{#{@env.processing_path.texi}/#{@md.fnb}.info}
        Dir.glob("#{info_src}*").sort.each do |f|
          FileUtils::cp(f, File.dirname(@f.place_file.info.dir)) # bug should provide dir without need to extract it!
        end
      end
    end
  end
end
__END__