Update.
This commit is contained in:
Ethan Dalool
parent
0bd5315e0a
commit
45ba419f16
1 changed files with 144 additions and 41 deletions
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@ -37,29 +37,35 @@ def remove_class(element, cls):
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@html_cleaner
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def remove_unwanted_stylesheets(html):
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html = re.sub(r'<style type="text/css">\s*@page { margin-bottom: 5.000000pt; margin-top: 5.000000pt; }\s*</style>', '', html)
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html = re.sub(r'<style type="text/css">\s*@page { margin-bottom: 5\.000000pt; margin-top: 5\.000000pt; }\s*</style>', '', html)
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html = re.sub(r'style="margin-top: 0px; margin-left: 0px; margin-right: 0px; margin-bottom: 0px; text-align: center;"', '', html)
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return html
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@html_cleaner
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def merge_neighboring_sametag(html):
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html = re.sub(r'</i><i>', '', html)
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html = re.sub(r'</i>\s*<i>', ' ', html)
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tags = ['i', 'b', 'em', 'strong', 'u', 'small']
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for tag in tags:
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html = re.sub(r'</%s><%s>' % (tag, tag), '', html)
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html = re.sub(r'</%s>\s*<%s>' % (tag, tag), ' ', html)
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html = re.sub(r'</%s>\s*<br/?>\s*<%s>' % (tag, tag), '<br/>', html)
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html = re.sub(r'</b><b>', '', html)
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html = re.sub(r'</b>\s*<b>', ' ', html)
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html = re.sub(r'</small><small>', '', html)
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html = re.sub(r'</small>\s*<small>', ' ', html)
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return html
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@html_cleaner
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def bring_punctuation_into_italics(html):
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for tag in ['i', 'b']:
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for tag in ['i', 'b', 'em', 'strong']:
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for punct in ['.', ',', '-', '—']:
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html = re.sub('\\{punct}<{tag}>'.format(**locals()), '<{tag}>{punct}'.format(**locals()), html)
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html = re.sub('</{tag}>\\{punct}'.format(**locals()), '{punct}</{tag}>'.format(**locals()), html)
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return html
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@html_cleaner
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def remove_misc_strings(html):
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html = html.replace('epub:type="pagebreak"', '')
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html = re.sub(r'title="[ivx]+"', '', html)
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html = re.sub(r'title="\d+"', '', html)
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return html
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@html_cleaner
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def remove_space_around_br(html):
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html = re.sub(r'\s*<br/?>\s*', '<br/>', html)
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@ -71,6 +77,14 @@ def replace_smart_quotes(html):
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html = re.sub(r'‘|’|ʹ', "'", html)
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return html
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@html_cleaner
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def remove_empty_attributes(html):
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html = re.sub(r'alt="\s*"', '', html)
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html = re.sub(r'class="\s*"', '', html)
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html = re.sub(r'id="\s*"', '', html)
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html = re.sub(r'title="\s*"', '', html)
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return html
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@html_cleaner
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def remove_empty_elements(html):
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html = re.sub(r'(?s)<(\w+)>(&(nbsp|emsp|ensp|thinsp|#160);|\s|<br/?>)*</\1>', '', html)
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@ -110,6 +124,16 @@ def inject_footnotes(soup):
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footnote_link.decompose()
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remove_class(footnote, 'gcufootnote_content')
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@soup_cleaner
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def center_images(soup):
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for img in soup.find_all('img'):
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if img.parent.name == 'body':
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center = soup.new_tag('center')
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img.insert_before(center)
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center.append(img)
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elif img.parent.name in ['div', 'p'] and not img.parent.attrs:
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img.parent.name = 'center'
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@soup_cleaner
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def convert_textdivs_p(soup):
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divs = soup.find_all('div')
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@ -133,23 +157,51 @@ def remove_empty_paragraphs(soup):
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br_parent.decompose()
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@soup_cleaner
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def remove_calibre_classes(soup):
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def remove_unwanted_classes_ids(soup):
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PATTERNS = [
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r'calibre\d*',
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r'mbppagebreak',
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r'big\d+',
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r'blnonindent\d*',
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r'c\d+',
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r'calibre_?\d*',
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r'calibre_pb_\d+',
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r'chapter',
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r'div\d+',
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r'dropcaps',
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r'filepos\d*',
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r'font',
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r'hanging',
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r'indent\d*',
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r'initial\d*',
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r'initialcaps',
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r'large',
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r'mbp_?pagebreak',
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r'morespaceabove',
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r'nonindent\d*',
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r'p_?[ivx]+',
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r'p_?\d+',
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r'page_?[ivx]+',
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r'page_?\d+',
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r'page_top_padding',
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r'pagebreak',
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r'pgepubid\d*',
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r'right',
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r'section',
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r'spaceabove',
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r'squeeze(\d+)?',
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r'stickupcaps',
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r'title',
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]
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for tag in soup.descendants:
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try:
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tag['class']
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except (TypeError, KeyError):
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pass
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else:
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if not isinstance(tag, bs4.element.Tag):
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continue
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if tag.get('class'):
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if isinstance(tag['class'], str):
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tag['class'] = tag['class'].split()
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else:
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tag['class'] = list(tag['class'])
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# Intentional list() duplicate so we can remove from original.
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for cls in list(tag['class']):
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if any(re.match(pattern, cls) for pattern in PATTERNS):
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tag['class'].remove(cls)
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@ -157,14 +209,9 @@ def remove_calibre_classes(soup):
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if len(tag['class']) == 0 or tag['class'][0] == '':
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del tag['class']
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try:
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tag['id']
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except (TypeError, KeyError):
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pass
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else:
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if tag.get('id'):
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if any(re.match(pattern, tag['id']) for pattern in PATTERNS):
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del tag['id']
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continue
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@soup_cleaner
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def remove_header_italic_bold(soup):
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@ -173,20 +220,33 @@ def remove_header_italic_bold(soup):
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children = list(header.children)
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if len(children) > 1:
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continue
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if len(children) == 0:
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header.extract()
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continue
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child = children[0]
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if isinstance(child, str):
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continue
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if child.name in ['i', 'b']:
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if child.name in ['i', 'b', 'em', 'strong']:
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raise_children_and_delete(child)
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@soup_cleaner
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def remove_useless_divs(soup):
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divs = soup.find_all('div')
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for div in divs:
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if not div.attrs:
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if div.attrs:
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continue
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if all(isinstance(child, bs4.element.Tag) or child.isspace() for child in div.contents):
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raise_children_and_delete(div)
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@soup_cleaner
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def remove_useless_blockquote(soup):
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blocks = soup.find_all('blockquote')
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for block in blocks:
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if block.attrs:
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continue
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if all(child.name == 'blockquote' or (isinstance(child, bs4.element.NavigableString) and child.isspace()) for child in block.contents):
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raise_children_and_delete(block)
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@soup_cleaner
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def remove_useless_spans(soup):
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spans = soup.find_all('span')
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@ -195,9 +255,29 @@ def remove_useless_spans(soup):
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continue
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raise_children_and_delete(span)
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@soup_cleaner
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def remove_useless_atags(soup):
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atags = soup.find_all('a')
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for atag in atags:
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if atag.attrs:
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continue
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raise_children_and_delete(atag)
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@soup_cleaner
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def remove_useless_meta(soup):
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selectors = [
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'link[type="application/vnd.adobe-page-template+xml"]',
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'meta[http-equiv="Content-Type"]',
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'meta[name="Adept.expected.resource"]',
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'meta[name="Adept.resource"]',
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]
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for selector in selectors:
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for item in soup.select(selector):
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item.extract()
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@soup_cleaner
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def remove_nested_italic(soup):
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elements = [element for tag in ['b', 'i'] for element in soup.find_all(tag)]
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elements = [element for tag in ['b', 'i', 'em', 'strong'] for element in soup.find_all(tag)]
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for element in elements:
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if element.parent.name == element.name:
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raise_children_and_delete(element)
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@ -223,22 +303,45 @@ def replace_italic_bold_span(soup):
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b.insert(0, span)
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@soup_cleaner
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def replace_pblock_blockquote(soup):
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classes = ['block', 'block1', 'blockquote']
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ptags = set(ptag for cls in classes for ptag in soup.find_all('p', {'class': cls}))
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for ptag in ptags:
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if isinstance(ptag['class'], str):
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span['class'] = span['class'].split()
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if len(ptag['class']) == 1:
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ptag.name = 'blockquote'
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ptag['class'] = []
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def replace_classes_real_tags(soup):
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replace = {
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'div.block': 'blockquote',
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'div.block1': 'blockquote',
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'div.block2': 'blockquote',
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'div.block3': 'blockquote',
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'div.blockquote': 'blockquote',
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'div.center': 'center',
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'div.center1': 'center',
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'p.block': 'blockquote',
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'p.block1': 'blockquote',
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'p.block2': 'blockquote',
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'p.block3': 'blockquote',
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'p.blockquote': 'blockquote',
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'p.center': 'center',
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'p.center1': 'center',
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'span.b': 'b',
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'span.i': 'i',
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'span.italic': 'i',
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'span.small': 'small',
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'span.small1': 'small',
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'span.smallcaps': 'small',
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'span.underline': 'u',
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}
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for (selector, new_name) in replace.items():
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for tag in soup.select(selector):
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if isinstance(tag['class'], str):
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tag['class'] = tag['class'].strip().split()
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if len(tag['class']) == 1:
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tag.name = new_name
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tag['class'] = []
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@soup_cleaner
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def strip_ptag_whitespace(soup):
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ps = soup.find_all('p') + soup.find_all('blockquote')
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def strip_unecessary_whitespace(soup):
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tags = ['p', 'blockquote', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6']
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elements = [element for tag in tags for element in soup.find_all(tag)]
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for p in ps:
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descendants = list(p.descendants)
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for element in elements:
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descendants = list(element.descendants)
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while descendants and not isinstance(descendants[0], bs4.element.NavigableString):
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if descendants[0].name == 'br':
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descendants[0].decompose()
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