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EPUB3 metadata: Ensure updating metadata never produces empty dc:contributor elements. Fixes #1644702 [Calibre puts in <dc:contributor id="id-6"/>](https://bugs.launchpad.net/calibre/+bug/1644702)

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This commit is contained in:
Kovid Goyal 2016-11-26 13:09:00 +05:30
parent 44345abdd9
commit dc6665c73e
1 changed files with 20 additions and 8 deletions
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28
src/calibre/ebooks/metadata/opf3.py
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@ -145,6 +145,8 @@ def items_with_property(root, q, prefixes=None):
# Prefixes {{{
# http://www.idpf.org/epub/vocab/package/pfx/
reserved_prefixes = {
'dcterms': 'http://purl.org/dc/terms/',
'epubsc': 'http://idpf.org/epub/vocab/sc/#',
@ -319,6 +321,8 @@ def identifier_writer(name):
p = package_identifier.getparent()
p.insert(p.index(package_identifier), ident)
return writer
set_application_id = identifier_writer('calibre')
set_uuid = identifier_writer('uuid')
@ -411,6 +415,7 @@ def set_languages(root, prefixes, refines, languages):
# Creator/Contributor {{{
Author = namedtuple('Author', 'name sort')
@ -500,13 +505,14 @@ def set_book_producers(root, prefixes, refines, producers):
remove_element(item, refines)
metadata = XPath('./opf:metadata')(root)[0]
for bkp in producers:
a = metadata.makeelement(DC('contributor'))
aid = ensure_id(a)
a.text = bkp
metadata.append(a)
m = metadata.makeelement(OPF('meta'), attrib={'refines':'#'+aid, 'property':'role', 'scheme':'marc:relators'})
m.text = 'bkp'
metadata.append(m)
if bkp:
a = metadata.makeelement(DC('contributor'))
aid = ensure_id(a)
a.text = bkp
metadata.append(a)
m = metadata.makeelement(OPF('meta'), attrib={'refines':'#'+aid, 'property':'role', 'scheme':'marc:relators'})
m.text = 'bkp'
metadata.append(m)
# }}}
# Dates {{{
@ -778,6 +784,7 @@ def dict_reader(name, load=json.loads, try2=True):
continue
return reader
read_user_categories = dict_reader('user_categories')
read_author_link_map = dict_reader('author_link_map')
@ -801,6 +808,7 @@ def dict_writer(name, serialize=dump_dict, remove2=True):
m.append(d)
return writer
set_user_categories = dict_writer('user_categories')
set_author_link_map = dict_writer('author_link_map')
@ -812,6 +820,8 @@ def deserialize_user_metadata(val):
decode_is_multiple(fm)
ans[name] = fm
return ans
read_user_metadata3 = dict_reader('user_metadata', load=deserialize_user_metadata, try2=False)
@ -842,6 +852,7 @@ def read_user_metadata(root, prefixes, refines):
def serialize_user_metadata(val):
return json.dumps(object_to_unicode(val), ensure_ascii=False, default=to_json, indent=2, sort_keys=True)
set_user_metadata3 = dict_writer('user_metadata', serialize=serialize_user_metadata, remove2=False)
@ -931,7 +942,8 @@ def read_metadata(root, ver=None, return_extra_data=False):
ans.author_sort = authors_to_string(aus) or ans.author_sort
bkp = read_book_producers(root, prefixes, refines)
if bkp:
ans.book_producer = bkp[0]
if bkp[0]:
ans.book_producer = bkp[0]
pd = read_pubdate(root, prefixes, refines)
if not is_date_undefined(pd):
ans.pubdate = pd