[slowsmile]

Hi everyone...I'm currently writing an edit plugin for my own use called Split2TOC. This plugin only works on imported html files and does the following:

* Splits the html file into separate xhtml files at heading boundaries
* Allows you to choose which heading style to use to split your file
* Adds the guides for cover, TOC and begin read(set to Chapter 1 or default)
* Removes any existing doc TOC
* Creates a Level 1 TOC file in the epub
* Creates a TOC CSS
* Adds the book cover
* Adds the metadata

Everything is working fine except when I try to add the epub metadata using setmetadataxml().

Here is my function that tries to set the metadata in the epub:

Spoiler:

def addOPFMetadata(bk, **meta):
   
    lang = getdefaultlocale()[0]
    if lang == None:
        lang = 'en'
    if '_' in lang:    
        lang = lang.split("_")[0]

    # add the metadata
    data =  ('  <metadata>')
    data += ('    <dc:date opf:event="creation">' + meta['date'] + '</dc:date>')
    data += ('    <dc:title>' + meta['title'].strip() + '</dc:title>\n')
    data += ('    <dc:identifier id="PrimaryID">urn:uuid:' + meta['book id'] + '</dc:identifier>\n')
    data += ('    <dc:language>' + lang + '</dc:language>\n')
    data += ('    <dc:creator opf:role="aut">' + meta['author'].strip() + '</dc:creator>\n')
    data += ('    <dc:publisher>' + meta['publisher'].strip() + '</dc:publisher>\n')
    data += ('    <dc:rights>Worldwide Copyright ©' + meta['year'] + ' ' +  meta['author'].strip() + \
                     '. All Rights Reserved.</dc:rights>\n')
    data += ('    <meta name="cover" content="cover-img" />\n')
    data += ('  </metadata>')

    bk.setmetadataxml(data)

    return(0)

And this is what I get in the epub opf metadata section after running that function:

Spoiler:

<?xml version="1.0" encoding="utf-8" ?>
<package unique-identifier="BookId" version="2.0" xmlns="http://www.idpf.org/2007/opf">
  <metadata>
    <date event="creation">2017-07-04</date>
    <title>Test Book</title>
    <identifier id="PrimaryID">urn:uuid:c8b2a9e5-abcdef-ae9d-ef72-9d15c76a8be3</identifier>
    <language>en</language>
    <creator role="aut">John Smith</creator>
    <publisher>John Smith</publisher>
    <rights>Worldwide Copyright ©2017 John Smith. All Rights Reserved.</rights>
    <meta content="cover-img" name="cover"></meta>
  </metadata>

As you can see, the 'dc:' tag prefix/suffix is missing on all metadata items in the epub. It appears that setmetadaxml() is deliberately removing 'dc:' from my data. What am I missing or is this a known problem with setmetadataxml()? Any ideas?