# coding: utf-8
=begin

 * Name: SiSU

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

 * Author: Ralph Amissah

 * Copyright: (C) 1997 - 2009 Ralph Amissah All Rights Reserved.

 * License: GPL 3 or later:

   SiSU, a framework for document structuring, publishing and search

   Copyright (C) Ralph Amissah

   This program is free software: you can redistribute it and/or modify it
   under the terms of the GNU General Public License as published by the Free
   Software Foundation, either version 3 of the License, or (at your option)
   any later version.

   This program is distributed in the hope that it will be useful, but WITHOUT
   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
   more details.

   You should have received a copy of the GNU General Public License along with
   this program. If not, see <http://www.gnu.org/licenses/>.

   If you have Internet connection, the latest version of the GPL should be
   available at these locations:
   <http://www.fsf.org/licensing/licenses/gpl.html>
   <http://www.gnu.org/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: modules shared by db and flatfile output generators, mostly
    xml/xhtml/html formatting

=end
module SiSU_Format_Shared
  require "#{SiSU_lib}/defaults"
  include SiSU_Viz
  class CSS_Format
    require "#{SiSU_lib}/defaults"
    @@fns=nil
    def initialize(md,t_o)
      @md,@t_o=md,t_o
      if t_o.class==Hash
        @txt =t_o[:txt]            #|| nil #s/@content/@txt/
        @col =t_o[:col]            #|| nil
        @notenumber =t_o[:endnote_nr]      || nil
      #elsif t_o.class == Array
      #  @txt =txt[0]
      #elsif t_o.class == String
      #  @txt =txt
      else
        #content.gsub!(/<:i[1-9]>/,'')
        #@md,@content=md,content
        p t_o.class
        p caller
      end
      @txt.gsub!(/#{Mx[:pa_o]}:i[1-9]#{Mx[:pa_c]}/,'')
      @id=@ocn=@col[:ocn]
      @ocnd,@ocns=@col[:ocnd],@col[:ocns]
      @lv=@col[:lev].to_s
      @@hname=if @md.fns != @@fns
        @@fns=@md.fns
        ''
      end
      @hname=if @col[:seg] \
      and not @col[:seg].to_s.empty?
        @@hname=@col[:seg].to_s
      else @@hname
      end
      @tab="\t"
      @url_brace=SiSU_Viz::Skin.new.url_decoration
      # lots introduced to do html tables in db
      @@tablehead,@@tablefoot=[],[]
      @vz=SiSU_Env::Get_init.instance.skin
      @env=SiSU_Env::Info_env.new(@md.fns)
      @base_url="#{@env.url.root}/#{@md.fnb}/#{@hname}.html"
    end
    def urls(data)
      @words=[]
      data.each do |word|
        @words << if word=~/#{Mx[:lnk_o]}(.+?)#{Mx[:lnk_c]}((?:https?|file|ftp)\S+|image)/
          if word =~/#{Mx[:lnk_o]}(.+?)#{Mx[:lnk_c]}((?:https?|file|ftp)\S+|image)([;.,](?:\s|$))/
            m,u,d=/#{Mx[:lnk_o]}(.+?)#{Mx[:lnk_c]}((?:https?|file|ftp)\S+|image)([;.,](?:\s|$))/.match(word).captures
          else m,u=/#{Mx[:lnk_o]}(.+?)#{Mx[:lnk_c]}((?:https?|file|ftp)\S+|image)/.match(word).captures
            d=''
          end
          word=case m
          when /\.png|\.jpg|\.gif|c=|\d+x\d+/
            w,h=/(\d+)x(\d+)/.match(m).captures if m =~/\d+x\d+/
            w=%{width="#{w}"} if w
            h=%{height="#{h}"} if h
            c=m[/"(.+?)"/m,1]
            caption=%{<br /><p class="caption">#{c}</p>} if c
            png=m.scan(/\S+/)[0]
            #image_path=if @md.fns =~/\.-ss[tm]$/; @env.url.images_external
            #else                                  @env.url.images_local
            #end
            ins=if u \
            and u.strip !~/^image$/
              %{<a href="#{u}">[#{png}]</a>#{caption}}
            else %{[#{png}] #{caption}}
            end
            word.gsub!(/#{Mx[:lnk_o]}.+?#{Mx[:lnk_c]}((?:https?|file|ftp)\S+|image)/,ins)
          else
            link=m[/(.+)/m]
            png=m.scan(/\S+/)[0].strip
            link=link.strip
            ins=%{<a href="#{u}">#{link}</a>#{d}}
            #ins=%{#{link} <a href="#{u}">[link]</a>#{d}}
            word.gsub!(/#{Mx[:lnk_o]}.+?#{Mx[:lnk_c]}(?:https?|file|ftp)\S+/,ins)
          end
        else word
        end
        word
      end
      @words=@words.join(' ')
    end
    def markup(para)
      if para !~/^#{Mx[:gr_o]}:code#{Mx[:gr_c]}/
        if para =~/#{Mx[:lnk_o]}.+?#{Mx[:lnk_c]}((?:https?|file|ftp)\S+|image)/
          wm=para.scan(/#{Mx[:lnk_o]}.+?#{Mx[:lnk_c]}(?:(?:https?|file|ftp)\S+|image)|\S+/)
          words=urls(wm)
          para.gsub!(/.+/m,words)
        end
        para.gsub!(/#{Mx[:gl_o]}(#[0-9]{3})#{Mx[:gl_c]}/u,'&\1;')
        para.gsub!(/#{Mx[:gl_o]}#([a-z]{2,4})#{Mx[:gl_c]}/u,'&\1;')
        para.gsub!(/#{Mx[:pa_o]}:i[1-9]#{Mx[:pa_c]}/m,'')
        para.gsub!(/\b[_\\]((?:https?|file|ftp):\/\/\S+?\.[^'"><\s]+?)([;.,]?(?:\s|$))/,'<a href="\1" target="_top">\1</a>\2') #http ftp matches escaped, no decoration
        para.gsub!(/((?:^|\s)#{Mx[:lnk_c]})((?:https?|file|ftp):\/\/\S+?\.[^'"><\s]+?)([;.,]?(?:\s|$))/,'\1<a href="\2" target="_top">\2</a>\3') #special case \{ e.g. \}http://url
        para.gsub!(/(^|#{Mx[:gl_c]}|\s)((?:https?|file|ftp):\/\/\S+?\.[^'"><\s]+?)([;.,]?(?=\s|$))/,%{\\1#{@url_brace.xml_open}<a href="\\2" target="_top">\\2</a>#{@url_brace.xml_close}\\3}) #http ftp matches with decoration
      else
        para.gsub!(/(^|[^}])_</m,'\1&lt;'); para.gsub!(/(^|[^}])_>/m,'\1&gt;') #code-block: angle brackets special characters
        para.gsub!(/(^|[^}])_</m,'\1&lt;'); para.gsub!(/(^|[^}])_>/m,'\1&gt;')
      end
      para
    end
    def paragraph
      %{#{@tab*1}<p class="h#{@lv}" id="#{@ocn}" type="substantive" header="#{@hname}">\n#{@tab*2}#{@txt}\n#{@tab*1}</p>\n}  << "\n"
    end
    def endnote #used only by db
      @txt=markup(@txt)
      <<GSUB
#{@tab*1}<p class="endnote" name="note_#{@notenumber}" from="#{@ocn}">
#{@tab*2}<a href="#{@base_url}#-#{@notenumber}" name="_#{@notenumber}">#{@notenumber}.</a> <note>#{@txt}</note>
#{@tab*1}</p>
GSUB
    end
    def lev_toc_hname
      %{#{@tab*1}<p class="toc#{@lv}" header="#{@hname}"><a href="##{@ocn}">\n#{@tab*2}#{@txt}\n#{@tab*1}</a></p>\n}  << "\n"
    end
    def lev_toc
      %{#{@tab*1}<p class="toc#{@lv}"><a href="##{@ocn}">\n#{@tab*2}#{@txt}\n#{@tab*1}</a></p>\n}  << "\n"
    end
    def lev4_plus
      %{#{@tab*1}<p class="h#{@lv}" id="#{@ocn}" type="substantive" header="#{@hname}">\n#{@tab*2}#{@txt}\n#{@tab*1}</p>\n}  << "\n"
    end
    def lev4_minus
      %{#{@tab*1}<p class="h#{@lv}" id="#{@ocn}" type="substantive">\n#{@tab*2}#{@txt}\n#{@tab*1}</p>\n}  << "\n"
    end
    def norm_comment
      %{#{@tab*1}<p class="norm" id="none" type="comment">\n#{@tab*2}#{@txt}\n#{@tab*1}</p>\n}
    end
    def norm
      @txt=markup(@txt)
      %{#{@tab*1}<p class="norm" id="#{@ocn}" type="substantive">\n#{@tab*2}#{@txt}\n#{@tab*1}</p>\n}
    end
    def indent(t)
      @txt=markup(@txt)
      %{#{@tab*1}<p class="indent#{t}" id="#{@ocn}" type="substantive">\n#{@tab*2}#{@txt}\n#{@tab*1}</p>\n}
    end
    def para_table
      %{<p class="norm" align="left"><font #{@vz.font_small} #{@vz.font_color} #{@vz.font_face}>}
    end
    def ocn
      %{#{@tab*1}<label class="ocn">#{@ocn}</label>} << "\n"
    end
   def html_table # get rid of use html_table
      @new_content=[]
      @txt.split(/\n/).each do |parablock|
        m=parablock[/<!f(.+?)!>/,1]
        @@tablefoot<<m if m
        parablock.gsub!(/<!f.+?!>/,'')
        @@tablehead=1 if parablock =~/#{Mx[:gr_o]}Th#{Mx[:tc_p]}/u
        parablock.gsub!(/#{Mx[:gr_o]}Th?#{Mx[:tc_p]}.+?#{Mx[:tc_p]}~(\d+)#{Mx[:gr_c]}/,
           #%{<table summary="normal text css" width="100%" border="0" bgcolor="white" cellpadding="2" align="center"><tr><td valign="top" align="justify"><p class="norm" id="\\1">  </p> </td><td>\n} +
           %{<table summary="normal text css" width="100%" border="0" bgcolor="white" cellpadding="2" align="center">})
        if parablock =~/#{Mx[:gr_o]}TZ#{Mx[:gr_c]}/
          tablefoot=[]
          @@tablefoot.each {|x| tablefoot << %{<p align="center"><font size=2><i>#{x}</i></font></p>\n}}
          @@tablefoot=[]
          parablock.gsub!(/#{Mx[:gr_o]}TZ#{Mx[:gr_c]}/,
            %{#{@vz.table_close}\n}) # +
            #%{#{tablefoot}})
        end
        if @@tablehead == 1
          if parablock =~/#{Mx[:tc_p]}#{Mx[:tc_p]}/u
            parablock.gsub!(/#{Mx[:tc_o]}#{Mx[:tc_p]}#{Mx[:tc_p]}(\d+?)#{Mx[:tc_p]}/u,
              %{\n<tr>} +
              %{\n<td width="\\1%" valign="top">} +
              %{#{para_table}<b>})
            parablock.gsub!(/#{Mx[:tc_p]}#{Mx[:tc_p]}(\d+?)#{Mx[:tc_p]}/u,
              %{</b></td><td width="\\1%" valign="top">} +
              %{#{para_table}<b>})
            parablock.gsub!(/#{Mx[:tc_c]}/, '</b></td></tr>')
            @@tablehead=0
          end
          parablock
        else
          parablock.gsub!(/#{Mx[:tc_o]}#{Mx[:tc_p]}#{Mx[:tc_p]}(\d+?)#{Mx[:tc_p]}/u,
            %{\n<tr>} +
            %{\n<td width="\\1%" valign="top">} +
            %{#{para_table}})
          parablock.gsub!(/#{Mx[:tc_p]}#{Mx[:tc_p]}(\d+?)#{Mx[:tc_p]}/u,
            %{</td><td width="\\1%" valign="top">} +
            %{#{para_table}})
          parablock.gsub!(/#{Mx[:tc_c]}/, '</td></tr>')
          parablock
        end
        @new_content << parablock
      end
      @new_content.join
    end
  end
  class CSS_Format_generic #does CSS_Format in one definition, needs to be told about attrib, despite brevity of generic, easier to see structure with CSS_Format
    def initialize(attrib='',txt='',id=nil,ocnd=nil,ocns=nil,lv='',hname=nil)
      @tab="\t"
      @attrib=attrib
      @txt=txt
      @lv=@notenumber=lv.to_s
      #{@ocn}=ocn.to_s
      @hname=hname.to_s
      @id=@ocn=id
    end
    def paragraph
      attrib=%{class="#{@attrib}" }
      if @ocn
        id=%{id="#{@ocn}" }
        type=%{type="substantive" }
      else
        id=%{id="none" }
        type=%{type="comment" }
      end
      header=%{header="#{@hname}" } if @hname
      %{#{@tab*1}<p #{attrib}#{id}#{type}#{header}>\n#{@tab*2}#{@txt}\n#{@tab*1}</p>\n}  << "\n"
    end
    def para
      paragraph
    end
  end
end
__END__