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Conversion pipeline: Strip out large blocks of contiguous space (more than 10000 contiguous blanks) as these slow down the conversion process and are almost always indicative of an error in the input document.

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Kovid Goyal 2011-07-18 10:53:31 -06:00
parent 08f5775f65
commit 59d9e15580
1 changed files with 3 additions and 0 deletions
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src/calibre/ebooks/conversion/preprocess.py
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@ -303,6 +303,9 @@ class CSSPreProcessor(object):
class HTMLPreProcessor(object):
PREPROCESS = [
# Remove huge block of contiguous spaces as they slow down
# the following regexes pretty badly
(re.compile(r'\s{10000,}'), lambda m: ''),
# Some idiotic HTML generators (Frontpage I'm looking at you)
# Put all sorts of crap into <head>. This messes up lxml
(re.compile(r'<head[^>]*>\n*(.*?)\n*</head>', re.IGNORECASE|re.DOTALL),