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pdf xmp metadata: handle the case where the x:xmpmeta node is omitted and the XML root is rdf:RDF

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This commit is contained in:
Jean-Francois Dockes 2017-05-16 03:20:57 +02:00
parent 6f44dce466
commit 9e046187da
1 changed files with 13 additions and 5 deletions
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18
src/filters/rclpdf.py
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@ -412,18 +412,26 @@ class PDFExtractor:
xml = ''
if res:
xml = res.group(1)
# self.em.rclog("extrameta: XML: [%s]" % xml)
#self.em.rclog("extrameta: XML: [%s]" % xml)
if not xml:
return html
metaheaders = []
# The namespace thing is a drag. Can't do it from the top. See
# the stackoverflow ref above. Maybe we'd be better off just
# walking the full tree and building the namespaces dict.
root = ET.fromstring(xml)
#self.em.rclog("NSMAP: %s"% root.nsmap)
namespaces = {'rdf' : "http://www.w3.org/1999/02/22-rdf-syntax-ns#"}
rdf = root.find("rdf:RDF", namespaces)
# Sometimes the root tag is <x:xmpmeta>, sometimes <rdf:RDF>
if root.tag.endswith('RDF'):
rdf = root
else:
namespaces = {'rdf' : "http://www.w3.org/1999/02/22-rdf-syntax-ns#"}
rdf = root.find("rdf:RDF", namespaces)
if rdf is None:
self.em.rclog("No rdf:RDF node");
return html
metaheaders = []
#self.em.rclog("RDF NSMAP: %s"% rdf.nsmap)
rdfdesclist = rdf.findall("rdf:Description", rdf.nsmap)
#self.em.rclog("RDFDESC NSMAP: %s"% rdfdesc.nsmap)