A simple PERL script to convert an epub 2 document to an HTML5 document.

After fetching the file, make sure it's executable:

chmod ug+x ./epubtohtml.pl

then run it to find out how to use it:

./epubtohtml --help

Here is a sample session that I run from my Mac.  Hope it helps you:

scml-jrichardson:pdf2html5 jric$ ~/dev/epubtohtml/epubtohtml.pl /Users/jric/dev/calibre/resources/quick_start.epub -o ~/tmp/quick_start
Archive:  /Users/jric/dev/calibre/resources/quick_start.epub
 extracting: /Users/jric/tmp/quick_start/mimetype  
  inflating: /Users/jric/tmp/quick_start/OEBPS/content.opf  
  inflating: /Users/jric/tmp/quick_start/OEBPS/toc.ncx  
  inflating: /Users/jric/tmp/quick_start/OEBPS/Styles/stylesheet.css  
  inflating: /Users/jric/tmp/quick_start/OEBPS/Text/calibre_quick_start_split_004.xhtml  
  inflating: /Users/jric/tmp/quick_start/OEBPS/Text/calibre_quick_start_split_005.xhtml  
  inflating: /Users/jric/tmp/quick_start/OEBPS/Text/calibre_quick_start_split_001.xhtml  
  inflating: /Users/jric/tmp/quick_start/OEBPS/Text/calibre_quick_start_split_003.xhtml  
  inflating: /Users/jric/tmp/quick_start/OEBPS/Text/titlepage.xhtml  
  inflating: /Users/jric/tmp/quick_start/OEBPS/Text/calibre_quick_start_split_000.xhtml  
  inflating: /Users/jric/tmp/quick_start/OEBPS/Text/calibre_quick_start_split_007.xhtml  
  inflating: /Users/jric/tmp/quick_start/OEBPS/Text/calibre_quick_start_split_002.xhtml  
  inflating: /Users/jric/tmp/quick_start/OEBPS/Text/calibre_quick_start_split_011.xhtml  
  inflating: /Users/jric/tmp/quick_start/OEBPS/Text/calibre_quick_start_split_010.xhtml  
  inflating: /Users/jric/tmp/quick_start/OEBPS/Text/calibre_quick_start_split_009.xhtml  
  inflating: /Users/jric/tmp/quick_start/OEBPS/Text/calibre_quick_start_split_008.xhtml  
  inflating: /Users/jric/tmp/quick_start/OEBPS/Text/calibre_quick_start_split_006.xhtml  
  inflating: /Users/jric/tmp/quick_start/OEBPS/Images/cover.jpg  
  inflating: /Users/jric/tmp/quick_start/META-INF/container.xml  
epubtohtml.pl: WARN: No opf file to get meta-data; will not create index.
open 'file://localhost/Users/jric/tmp/quick_start/OEBPS/Text/calibre_quick_start_split_001.xhtml'

Now I see a table of contents in my browser.