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Series for PDF metadata

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This commit is contained in:
Kovid Goyal 2014-02-17 09:56:06 +05:30
parent b013a59677
commit 2b03c2621a
1 changed files with 41 additions and 2 deletions
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43
src/calibre/ebooks/metadata/xmp.py
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@ -37,6 +37,7 @@ NS_MAP = {
'xml': 'http://www.w3.org/XML/1998/namespace',
'x': 'adobe:ns:meta/',
'calibre': 'http://calibre-ebook.com/xmp-namespace',
'calibreSI': 'http://calibre-ebook.com/xmp-namespace-series-index',
}
KNOWN_ID_SCHEMES = {'isbn', 'url', 'doi'}
@ -134,6 +135,24 @@ def first_sequence(expr, root):
for ans in read_sequence(item):
return ans
def read_series(root):
for item in XPath('//calibre:series')(root):
val = XPath('descendant::rdf:value')(item)
if val:
series = val[0].text
if series and series.strip():
series_index = 1.0
for si in XPath('descendant::calibreSI:series_index')(item):
try:
series_index = float(si.text)
except (TypeError, ValueError):
continue
else:
break
return series, series_index
return None, None
def read_xmp_identifers(parent):
''' For example:
<rdf:li rdf:parseType="Resource"><xmpidq:Scheme>URL</xmp:idq><rdf:value>http://foo.com</rdf:value></rdf:li>
@ -190,6 +209,9 @@ def metadata_from_xmp_packet(raw_bytes):
mi.rating = rating
except (ValueError, TypeError):
pass
series, series_index = read_series(root)
if series:
mi.series, mi.series_index = series, series_index
identifiers = {}
for xmpid in XPath('//xmp:Identifier')(root):
@ -276,6 +298,21 @@ def create_identifiers(xmp, identifiers):
li.append(val)
val.text = value
def create_series(calibre, series, series_index):
s = calibre.makeelement(expand('calibre:series'))
s.set(expand('rdf:parseType'), 'Resource')
calibre.append(s)
val = s.makeelement(expand('rdf:value'))
s.append(val)
val.text = series
try:
series_index = float(series_index)
except (TypeError, ValueError):
series_index = 1.0
si = s.makeelement(expand('calibreSI:series_index'))
si.text = '%.2f' % series_index
s.append(si)
def metadata_to_xmp_packet(mi):
A = ElementMaker(namespace=NS_MAP['x'], nsmap=nsmap('x'))
R = ElementMaker(namespace=NS_MAP['rdf'], nsmap=nsmap('rdf'))
@ -320,7 +357,7 @@ def metadata_to_xmp_packet(mi):
d.text = isoformat(now(), as_utc=False)
xmp.append(d)
calibre = rdf.makeelement(expand('rdf:Description'), nsmap=nsmap('calibre'))
calibre = rdf.makeelement(expand('rdf:Description'), nsmap=nsmap('calibre', 'calibreSI'))
calibre.set(expand('rdf:about'), '')
rdf.append(calibre)
if not mi.is_null('rating'):
@ -329,7 +366,9 @@ def metadata_to_xmp_packet(mi):
except (TypeError, ValueError):
pass
else:
create_simple_property(calibre, 'calibre:rating', '%.3g' % r)
create_simple_property(calibre, 'calibre:rating', '%g' % r)
if not mi.is_null('series'):
create_series(calibre, mi.series, mi.series_index)
return serialize_xmp_packet(root)
def find_used_namespaces(elem):