epub.rb in softcover-1.1.6

- old
+ new

@@ -34,10 +34,17 @@
     end
 
     # Returns a content.opf file based on a valid template.
     def content_opf_template(title, copyright, author, uuid, cover_id,
                              toc_chapters, manifest_chapters, images)
+      if cover_id
+        cover_meta = %(<meta name="cover" content="#{cover_id}"/>)
+        cover_html = '<item id="cover" href="cover.html" media-type="application/xhtml+xml"/>'
+        cover_ref  = '<itemref idref="cover" linear="no" />'
+      else
+        cover_meta = cover_html = cover_ref = ''
+      end
 %(<?xml version="1.0" encoding="UTF-8"?>
 <package unique-identifier="BookID" version="3.0" xmlns="http://www.idpf.org/2007/opf">
   <metadata xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/"
       xmlns:opf="http://www.idpf.org/2007/opf">
       <dc:title>#{escape(title)}</dc:title>
@@ -45,27 +52,27 @@
       <dc:rights>Copyright (c) #{copyright} #{escape(author)}</dc:rights>
       <dc:creator>#{author}</dc:creator>
       <dc:publisher>Softcover</dc:publisher>
       <dc:identifier id="BookID">urn:uuid:#{uuid}</dc:identifier>
       <meta property="dcterms:modified">#{Time.now.strftime('%Y-%m-%dT%H:%M:%S')}Z</meta>
-      <meta name="cover" content="#{cover_id}"/>
+      #{cover_meta}
   </metadata>
   <manifest>
       <item href="nav.html" id="nav" media-type="application/xhtml+xml" properties="nav"/>
       <item id="ncx" href="toc.ncx" media-type="application/x-dtbncx+xml"/>
       <item id="page-template.xpgt" href="styles/page-template.xpgt" media-type="application/vnd.adobe-page-template+xml"/>
       <item id="pygments.css" href="styles/pygments.css" media-type="text/css"/>
       <item id="softcover.css" href="styles/softcover.css" media-type="text/css"/>
       <item id="epub.css" href="styles/epub.css" media-type="text/css"/>
       <item id="custom.css" href="styles/custom.css" media-type="text/css"/>
       <item id="custom_epub.css" href="styles/custom_epub.css" media-type="text/css"/>
-      <item id="cover" href="cover.html" media-type="application/xhtml+xml"/>
+      #{cover_html}
       #{manifest_chapters.join("\n")}
       #{images.join("\n")}
   </manifest>
   <spine toc="ncx">
-    <itemref idref="cover" linear="no" />
+    #{cover_ref}
     #{toc_chapters.join("\n")}
   </spine>
 </package>
 )
     end
@@ -498,10 +505,10 @@
 </html>
 )
       end
 
       def cover_id
-        "img-#{cover_img.sub('.', '-')}"
+        cover? ? "img-#{cover_img.sub('.', '-')}" : nil
       end
 
       # Returns the Table of Contents for the spine.
       def toc_ncx
         chapter_nav = []
\ No newline at end of file