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-# encoding: utf-8
-=begin
-
-* Name: SiSU
-
-** Description: documents, structuring, processing, publishing, search
-*** system environment, resource control and configuration details
-
-** 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/current/ao_hash_digest.rb;hb=HEAD>
-
-=end
-module SiSU_AO_Hash
- require_relative 'shared_markup_alt.rb' #shared_markup_alt.rb
- class ObjectDigest
- def initialize(md,data,env=nil)
- @md,@data,@env=md,data,env
- @env ||=SiSU_Env::InfoEnv.new(@md.fns,@md)
- end
- def object_digest
- # 1. clean/stripped text without any markup, paragraph, headings etc. without endnotes
- # 2. endnotes clean/stripped text digest only (there may be several endnotes within a paragraph)
- # 3. whole object, text with markup and any endnotes, (question: with or without the endnote digests??? presumption better without, [however may be easier to check with?])
- # [digests should not include other digests]
- data=@data.compact
- @tuned_file=[]
- sha_ =@env.digest(@md.opt).type
- begin
- sha_ ? (require 'digest/sha2') : (require 'digest/md5')
- rescue LoadError
- SiSU_Utils::CodeMarker.new(__LINE__,__FILE__,:fuchsia).error(sha_ + ' NOT FOUND')
- end
- data.each do |t_o|
- unless t_o.obj.is_a?(Array)
- t_o.obj=t_o.obj.strip
- end
- if (t_o.of !=:structure \
- && t_o.of !=:comment \
- && t_o.of !=:layout) \
- && t_o.ocn.is_a?(Fixnum)
- case sha_
- when :sha512
- for hash_class in [ Digest::SHA512 ]
- @tuned_file << stamped(t_o,hash_class)
- end
- when :sha256
- for hash_class in [ Digest::SHA256 ]
- @tuned_file << stamped(t_o,hash_class)
- end
- when :md5
- for hash_class in [ Digest::MD5 ]
- @tuned_file << stamped(t_o,hash_class)
- end
- end
- else @tuned_file << t_o unless t_o.nil?
- end
- end
- @tuned_file=@tuned_file.flatten
- #use md5 or to create hash of each ao object including ocn, & add into to each ao object
- end
- def endnote_digest(data)
- data.each.map do |en_plus|
- case en_plus
- when /#{Mx[:en_a_o]}|#{Mx[:en_b_o]}/
- if en_plus =~/#{Mx[:en_a_o]}.+?#{Mx[:en_a_c]}|#{Mx[:en_b_o]}.+?#{Mx[:en_b_c]}/
- t_o_txt,en_open,en_txt,en_close=
- /(.*?)(#{Mx[:en_a_o]}|#{Mx[:en_b_o]})(.+?)(#{Mx[:en_a_c]}|#{Mx[:en_b_c]})/m.
- match(en_plus)[1..4]
- stripped_en=SiSU_TextRepresentation::Alter.new(en_txt).strip_clean_of_markup
- digest_en_strip=case @env.digest(@md.opt).type
- when :sha512
- Digest::SHA512.hexdigest(stripped_en)
- when :sha256
- Digest::SHA256.hexdigest(stripped_en)
- when :md5
- Digest::MD5.hexdigest(stripped_en)
- else
- Digest::SHA256.hexdigest(stripped_en)
- end
- t_o_txt +
- en_open +
- en_txt +
- Mx[:id_o] +
- digest_en_strip +
- Mx[:id_c] +
- en_close
- else STDERR.puts "Error Exception - problem encountered with:\n#{en_plus}" #arbitrary exception, tidy up
- end
- else en_plus
- end
- end.join
- end
- def stamped(t_o,hash_class) #decide what hash information is most useful, is compromise necessary?
- t_o.obj=SiSU_TextRepresentation::Alter.new(t_o).strip_clean_of_extra_spaces
- #SiSU_TextRepresentation::Alter.new(t_o).strip_clean_of_markup #check
- #SiSU_TextRepresentation::Alter.new(t_o).semi_revert_markup #check
- #SiSU_TextRepresentation::ModifiedTextPlusHashDigest.new(@md,t_o).composite.dgst #check
- unless t_o.is==:code
- case t_o.obj
- when /#{Mx[:en_a_o]}[\d*+]+\s+.+?#{Mx[:en_a_c]}|#{Mx[:en_b_o]}[*+]\d+\s+.+?#{Mx[:en_b_c]}/m
- en_and_t_o_digest=[]
- t_o.obj=t_o.obj.
- gsub(/\s*(#{Mx[:en_a_c]}|#{Mx[:en_b_c]})/m,' \1') #watch
- t_o_plus_en=t_o.obj.
- scan(/.*?#{Mx[:en_a_o]}.+?#{Mx[:en_a_c]}|.*?#{Mx[:en_b_o]}.+?#{Mx[:en_b_c]}/m)
- t_o_tail=if t_o.obj =~/(?:.*?#{Mx[:en_a_o]}.+?#{Mx[:en_a_c]}|.*?#{Mx[:en_b_o]}.+?#{Mx[:en_b_c]})+([\s\S]+)/m
- /(?:.*?#{Mx[:en_a_o]}.+?#{Mx[:en_a_c]}|.*?#{Mx[:en_b_o]}.+?#{Mx[:en_b_c]})+.*/m.match(t_o.obj)[1]
- else ''
- end
- t_o_plus_en << t_o_tail
- en_and_t_o_digest << endnote_digest(t_o_plus_en)
- en_and_t_o_digest.join(' ')
- else #@tuned << t_o + Mx[:id_o] + digest_strip + ':' + digest_all + Mx[:id_c] unless t_o.nil?
- end
- else #@tuned << t_o + Mx[:id_o] + digest_strip + ':' + digest_all + Mx[:id_c] unless t_o.nil?
- end
- t_o #KEEP intact
- end
- def strip_clean_extra_spaces(s) # ao output tuned
- s=s.dup
- s=s.gsub(/[ ]+([,.;:?](?:$|\s))/,'\1') unless s =~/#{Mx[:en_a_o]}|#{Mx[:en_b_o]}/
- s=s.gsub(/ [ ]+/,' ').
- gsub(/^ [ ]+/,'').
- gsub(/ [ ]+$/,'').
- gsub(/((?:#{Mx[:fa_bold_c]}|#{Mx[:fa_italics_c]})')[ ]+(s )/,'\1\2').
- gsub(/((?:#{Mx[:fa_bold_c]}|#{Mx[:fa_italics_c]})')[ ]+(s )/,'\1\2')
- end
- end
-end
-__END__