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Remove unused css: Prevent failure when book has invalid items marked as stylesheets

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Kovid Goyal 2014-06-14 09:08:26 +05:30
parent d76dd915a2
commit 5ee7a620ea
1 changed files with 7 additions and 1 deletions
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8
src/calibre/ebooks/oeb/polish/css.py
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@ -120,7 +120,13 @@ def preserve_htmlns_prefix(sheet, prefix):
def remove_unused_css(container, report):
from cssutils.css import CSSRule
sheets = {name:container.parsed(name) for name, mt in container.mime_map.iteritems() if mt in OEB_STYLES}
def safe_parse(name):
try:
return container.parsed(name)
except TypeError:
pass
sheets = {name:safe_parse(name) for name, mt in container.mime_map.iteritems() if mt in OEB_STYLES}
sheets = {k:v for k, v in sheets.iteritems() if v is not None}
sheet_namespace = {}
for sheet in sheets.itervalues():
sheet_namespace[sheet] = process_namespaces(sheet)