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diff --git a/lib/sisu/html_harvest.rb b/lib/sisu/html_harvest.rb
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+# encoding: utf-8
+=begin
+
+* Name: SiSU
+
+** Description: documents, structuring, processing, publishing, search
+*** metadata harvest, harvest metadata from document corpus
+
+** 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 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
+
+** 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/harvest.rb;hb=HEAD>
+
+=end
+module SiSU_Harvest
+  @@the_idx_topics,@@the_idx_authors={},{}
+  class Source
+    require_relative 'hub_options'                          # hub_options.rb
+    require_relative 'html_harvest_topics'                  # html_harvest_topics.rb
+    require_relative 'html_harvest_authors'                 # html_harvest_authors.rb
+    require_relative 'se'                                   # se.rb
+      include SiSU_Env
+    def initialize(opt)
+      @opt=opt
+      @env=SiSU_Env::InfoEnv.new
+    end
+    def read
+      begin
+        harvest_pth=@env.path.webserv + '/' + @opt.base_stub
+        FileUtils::mkdir_p(harvest_pth) unless FileTest.directory?(harvest_pth)
+        cases(@opt,@env)
+      rescue
+      ensure
+        SiSU_Env::CreateSite.new(@opt).cp_css
+      end
+    end
+    def help
+      puts <<WOK
+      harvest --harvest   extracts document index metadata
+
+WOK
+    end
+    def css(opt)
+      require_relative 'css'                                # css.rb
+      css=SiSU_Style::CSS.new
+      fn_css=SiSU_Env::CSS_Default.new
+      style=File.new("#{@env.path.pwd}/#{fn_css.harvest}",'w')
+      style << css.harvest
+      style.close
+    end
+    def cases(opt,env)
+      case opt.selections.str.inspect
+      when/--harvest/i
+        css(opt) if @opt.act[:maintenance][:set]==:on
+        SiSU_HarvestAuthors::Songsheet.new(opt,env).songsheet
+        SiSU_HarvestTopics::Songsheet.new(opt,env).songsheet
+        if @opt.act[:rsync][:set]==:on
+          require_relative 'remote'                         # remote.rb
+          SiSU_Remote::Put.new(opt).rsync_harvest
+        end
+      else
+        help
+      end
+    end
+  end
+end
+__END__