From 4fcfa03d0cc4e5d4f2c02d0cafa0c7a1c1ebf7e7 Mon Sep 17 00:00:00 2001
From: Ralph Amissah <ralph@amissah.com>
Date: Wed, 5 Feb 2014 01:06:46 -0500
Subject: v5 v6: epub, hash digests used only if available

---
 data/doc/sisu/CHANGELOG_v5        |  4 +++-
 data/doc/sisu/CHANGELOG_v6        |  4 +++-
 lib/sisu/v5/xhtml_epub2_format.rb | 10 ++++++----
 lib/sisu/v6/xhtml_epub2_format.rb | 10 ++++++----
 4 files changed, 18 insertions(+), 10 deletions(-)

diff --git a/data/doc/sisu/CHANGELOG_v5 b/data/doc/sisu/CHANGELOG_v5
index a97c8bc1..654a8fa6 100644
--- a/data/doc/sisu/CHANGELOG_v5
+++ b/data/doc/sisu/CHANGELOG_v5
@@ -50,7 +50,9 @@ http://www.jus.uio.no/sisu/pkg/src/sisu_5.3.1.orig.tar.xz
   * tags
   * endnote name and nameref (make compliant)
 
-* epub use same endnote name and nameref as introduced here for html
+* epub
+  * use same endnote name and nameref as introduced here for html
+  * hash digests used only if availabile (availability check)
 
 * ocn turn on/off rules
   * txt
diff --git a/data/doc/sisu/CHANGELOG_v6 b/data/doc/sisu/CHANGELOG_v6
index 3000f42a..4634ce09 100644
--- a/data/doc/sisu/CHANGELOG_v6
+++ b/data/doc/sisu/CHANGELOG_v6
@@ -40,7 +40,9 @@ http://www.jus.uio.no/sisu/pkg/src/sisu_6.0.1.orig.tar.xz
   * tags
   * endnote name and nameref (make compliant)
 
-* epub use same endnote name and nameref as introduced here for html
+* epub
+  * use same endnote name and nameref as introduced here for html
+  * hash digests used only if availabile (availability check)
 
 * ocn turn on/off rules
   * txt
diff --git a/lib/sisu/v5/xhtml_epub2_format.rb b/lib/sisu/v5/xhtml_epub2_format.rb
index e3b877aa..6522378b 100644
--- a/lib/sisu/v5/xhtml_epub2_format.rb
+++ b/lib/sisu/v5/xhtml_epub2_format.rb
@@ -1362,12 +1362,13 @@ output_epub_cont_seg.close
         depth=@md.lvs[1] + @md.lvs[2] + @md.lvs[3] + @md.lvs[4]
         title=SanitizeXML.xml(@md.title.full)
         author=SanitizeXML.xml(@md.author)
+        dgst=(@md.dgst.is_a?(Array) and @md.dgst.length > 1) ? @md.dgst[1] : 'na'
         <<-WOK
     <!-- four required metadata items (for all NCX documents,
       (including the relaxed constraints of OPS 2.0) -->
     <title>#{title} by #{author}</title>
     <link href="css/xhtml.css" rel="stylesheet" type="text/css" id="main-css" />
-    <meta name="dtb:uid" content="urn:uuid:#{@md.dgst[1]}" />
+    <meta name="dtb:uid" content="urn:uuid:#{dgst}" />
     <!-- <meta name="epub-creator" content="#{@md.publisher}" /> -->
     <meta name="dtb:depth" content="#{depth}" />
     <meta name="dtb:totalPageCount" content="0" />
@@ -1579,18 +1580,19 @@ output_epub_cont_seg.close
         else ''
         end
         f=SiSU_Env::FileOp.new(@md)
+        dgst=(@md.dgst.is_a?(Array) and @md.dgst.length > 1) ? @md.dgst[1] : 'na'
         <<-WOK
   <#{$ep[:o]}metadata
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xmlns:opf="http://www.idpf.org/2007/opf"
     xmlns:dcterms="http://purl.org/dc/terms/"
     xmlns:dc="http://purl.org/dc/elements/1.1/"
-    unique-identifier="urn:uuid:#{@md.dgst[1]}" version="2.0">
+    unique-identifier="urn:uuid:#{dgst}" version="2.0">
     <dc:title>#{@md.title.full}</dc:title>
     #{cover_image}#{author}#{editor}#{translator}#{illustrator}#{language}#{date_published}#{subject}#{rights}
     <dc:identifier opf:scheme="URI">#{f.output_path.epub.url.gsub(/http:\/\//,'')}/#{f.base_filename.epub}</dc:identifier>
-    <dc:identifier id="bookid">urn:uuid:#{@md.dgst[1]}</dc:identifier>
-    <!-- <dc:identifier id="EPB-UUID">urn:uuid:#{@md.dgst[1]}</dc:identifier> -->
+    <dc:identifier id="bookid">urn:uuid:#{dgst}</dc:identifier>
+    <!-- <dc:identifier id="EPB-UUID">urn:uuid:#{dgst}</dc:identifier> -->
   </#{$ep[:o]}metadata>
         WOK
       end
diff --git a/lib/sisu/v6/xhtml_epub2_format.rb b/lib/sisu/v6/xhtml_epub2_format.rb
index 7ae97f95..626eb79f 100644
--- a/lib/sisu/v6/xhtml_epub2_format.rb
+++ b/lib/sisu/v6/xhtml_epub2_format.rb
@@ -1362,12 +1362,13 @@ output_epub_cont_seg.close
         depth=@md.lvs[1] + @md.lvs[2] + @md.lvs[3] + @md.lvs[4]
         title=SanitizeXML.xml(@md.title.full)
         author=SanitizeXML.xml(@md.author)
+        dgst=(@md.dgst.is_a?(Array) and @md.dgst.length > 1) ? @md.dgst[1] : 'na'
         <<-WOK
     <!-- four required metadata items (for all NCX documents,
       (including the relaxed constraints of OPS 2.0) -->
     <title>#{title} by #{author}</title>
     <link href="css/xhtml.css" rel="stylesheet" type="text/css" id="main-css" />
-    <meta name="dtb:uid" content="urn:uuid:#{@md.dgst[1]}" />
+    <meta name="dtb:uid" content="urn:uuid:#{dgst}" />
     <!-- <meta name="epub-creator" content="#{@md.publisher}" /> -->
     <meta name="dtb:depth" content="#{depth}" />
     <meta name="dtb:totalPageCount" content="0" />
@@ -1579,18 +1580,19 @@ output_epub_cont_seg.close
         else ''
         end
         f=SiSU_Env::FileOp.new(@md)
+        dgst=(@md.dgst.is_a?(Array) and @md.dgst.length > 1) ? @md.dgst[1] : 'na'
         <<-WOK
   <#{$ep[:o]}metadata
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xmlns:opf="http://www.idpf.org/2007/opf"
     xmlns:dcterms="http://purl.org/dc/terms/"
     xmlns:dc="http://purl.org/dc/elements/1.1/"
-    unique-identifier="urn:uuid:#{@md.dgst[1]}" version="2.0">
+    unique-identifier="urn:uuid:#{dgst}" version="2.0">
     <dc:title>#{@md.title.full}</dc:title>
     #{cover_image}#{author}#{editor}#{translator}#{illustrator}#{language}#{date_published}#{subject}#{rights}
     <dc:identifier opf:scheme="URI">#{f.output_path.epub.url.gsub(/http:\/\//,'')}/#{f.base_filename.epub}</dc:identifier>
-    <dc:identifier id="bookid">urn:uuid:#{@md.dgst[1]}</dc:identifier>
-    <!-- <dc:identifier id="EPB-UUID">urn:uuid:#{@md.dgst[1]}</dc:identifier> -->
+    <dc:identifier id="bookid">urn:uuid:#{dgst}</dc:identifier>
+    <!-- <dc:identifier id="EPB-UUID">urn:uuid:#{dgst}</dc:identifier> -->
   </#{$ep[:o]}metadata>
         WOK
       end
-- 
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