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preserve soft breaks when deleting blank paragraphs

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This commit is contained in:
ldolse 2011-01-15 00:11:21 +08:00
parent 65f9eff665
commit f467498638
1 changed files with 10 additions and 8 deletions
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18
src/calibre/ebooks/conversion/utils.py
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@ -294,8 +294,8 @@ class PreProcessor(object):
# If more than 40% of the lines are empty paragraphs and the user has enabled delete
# blank paragraphs then delete blank lines to clean up spacing
linereg = re.compile('(?<=<p).*?(?=</p>)', re.IGNORECASE|re.DOTALL)
blankreg = re.compile(r'\s*(?P<openline><p[^>]*>)\s*(?P<closeline></p>)', re.IGNORECASE)
#multi_blank = re.compile(r'(\s*<p[^>]*>\s*(<(b|i|u)>)?\s*(</(b|i|u)>)?\s*</p>){2,}', re.IGNORECASE)
blankreg = re.compile(r'\s*(?P<openline><p(?!\sid=\"softbreak\")[^>]*>)\s*(?P<closeline></p>)', re.IGNORECASE)
multi_blank = re.compile(r'(\s*<p[^>]*>\s*</p>){2,}', re.IGNORECASE)
blanklines = blankreg.findall(html)
lines = linereg.findall(html)
blanks_between_paragraphs = False
@ -303,11 +303,8 @@ class PreProcessor(object):
if len(lines) > 1:
self.log("There are " + unicode(len(blanklines)) + " blank lines. " +
unicode(float(len(blanklines)) / float(len(lines))) + " percent blank")
if float(len(blanklines)) / float(len(lines)) > 0.40 and getattr(self.extra_opts,
'delete_blank_paragraphs', False):
self.log("deleting blank lines")
html = blankreg.sub('', html)
elif float(len(blanklines)) / float(len(lines)) > 0.40:
if float(len(blanklines)) / float(len(lines)) > 0.40:
blanks_between_paragraphs = True
print "blanks between paragraphs is marked True"
else:
@ -319,7 +316,12 @@ class PreProcessor(object):
html = self.markup_chapters(html, totalwords, blanks_between_paragraphs)
if blanks_between_paragraphs and getattr(self.extra_opts,
'delete_blank_paragraphs', False):
self.log("deleting blank lines")
html = multi_blank.sub('\n<p id="softbreak" style="margin-top:1.5em; margin-bottom:1.5em"> </p>', html)
html = blankreg.sub('', html)
###### Unwrap lines ######
#
# Some OCR sourced files have line breaks in the html using a combination of span & p tags