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Do not use BeautifulSoup to postprocess the jacket

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Avoids an extra parse
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Kovid Goyal 2019-03-24 12:41:40 +05:30
parent 8813a31a38
commit a3c0ce3b24
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GPG Key ID: 06BC317B515ACE7C
1 changed files with 35 additions and 26 deletions
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61
src/calibre/ebooks/oeb/transforms/jacket.py
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@ -15,7 +15,6 @@ from lxml import etree
from calibre import guess_type, strftime
from calibre.constants import iswindows
from calibre.ebooks.BeautifulSoup import BeautifulSoup
from calibre.ebooks.oeb.base import XPath, XHTML_NS, XHTML, xml2text, urldefrag, urlnormalize
from calibre.library.comments import comments_to_html, markdown
from calibre.utils.date import is_date_undefined, as_local_time
@ -205,6 +204,34 @@ class Tags(unicode_type):
return t
def postprocess_jacket(root, output_profile, has_data):
# Post-process the generated html to strip out empty header items
def extract(tag):
parent = tag.getparent()
idx = parent.index(tag)
parent.remove(tag)
if tag.tail:
if idx == 0:
parent.text = (parent.text or '') + tag.tail
else:
if idx >= len(parent):
idx = -1
parent[-1].tail = (parent[-1].tail or '') + tag.tail
def extract_class(cls):
for tag in root.xpath('//*[@class="_"]'.replace('_', cls)):
extract(tag)
for key in 'series rating tags'.split():
if not has_data[key]:
extract_class('cbj_' + key)
if not has_data['pubdate']:
extract_class('cbj_pubdata')
if output_profile.short_name != 'kindle':
extract_class('cbj_kindle_banner_hr')
def render_jacket(mi, output_profile,
alt_title=_('Unknown'), alt_tags=[], alt_comments='',
alt_publisher='', rescale_fonts=False, alt_authors=None):
@ -256,6 +283,7 @@ def render_jacket(mi, output_profile,
author = ''
mi.authors = orig
author = escape(author)
has_data = {}
def generate_html(comments):
args = dict(xmlns=XHTML_NS,
@ -315,32 +343,12 @@ def render_jacket(mi, output_profile,
formatter = SafeFormatter()
generated_html = formatter.format(template, **args)
has_data['series'] = bool(series)
has_data['tags'] = bool(tags)
has_data['rating'] = bool(rating)
has_data['pubdate'] = bool(pubdate)
# Post-process the generated html to strip out empty header items
soup = BeautifulSoup(generated_html)
if not series:
series_tag = soup.find(attrs={'class':'cbj_series'})
if series_tag is not None:
series_tag.extract()
if not rating:
rating_tag = soup.find(attrs={'class':'cbj_rating'})
if rating_tag is not None:
rating_tag.extract()
if not tags:
tags_tag = soup.find(attrs={'class':'cbj_tags'})
if tags_tag is not None:
tags_tag.extract()
if not pubdate:
pubdate_tag = soup.find(attrs={'class':'cbj_pubdata'})
if pubdate_tag is not None:
pubdate_tag.extract()
if output_profile.short_name != 'kindle':
hr_tag = soup.find('hr', attrs={'class':'cbj_kindle_banner_hr'})
if hr_tag is not None:
hr_tag.extract()
return strip_encoding_declarations(soup.decode_contents())
return strip_encoding_declarations(generated_html)
from calibre.ebooks.oeb.base import RECOVER_PARSER
@ -369,6 +377,7 @@ def render_jacket(mi, output_profile,
for child in body:
fw.append(child)
body.append(fw)
postprocess_jacket(root, output_profile, has_data)
from calibre.ebooks.oeb.polish.pretty import pretty_html_tree
pretty_html_tree(None, root)
return root