def media_allowed(media):
if not media or not media.mediaText:
return True
return media_ok(media.mediaText)
def media_allowed(media):
if not media or not media.mediaText:
return True
return media_ok(media.mediaText)
def resolve_styles(container, name, select=None, sheet_callback=None):
root = container.parsed(name)
select = select or Select(root, ignore_inappropriate_pseudo_classes=True)
style_map = defaultdict(list)
pseudo_style_map = defaultdict(list)
rule_index_counter = count()
pseudo_pat = re.compile(
u':{1,2}(%s)' % ('|'.join(INAPPROPRIATE_PSEUDO_CLASSES)), re.I)
def process_sheet(sheet, sheet_name):
if sheet_callback is not None:
sheet_callback(sheet, sheet_name)
for rule, sheet_name, rule_index in iterrules(
container,
sheet_name,
rules=sheet,
rule_index_counter=rule_index_counter,
rule_type='STYLE_RULE'):
for selector in rule.selectorList:
text = selector.selectorText
try:
matches = tuple(select(text))
except SelectorError as err:
container.log.error(
'Ignoring CSS rule with invalid selector: %r (%s)' %
(text, as_unicode(err)))
continue
m = pseudo_pat.search(text)
style = normalize_style_declaration(rule.style, sheet_name)
if m is None:
for elem in matches:
style_map[elem].append(
StyleDeclaration(specificity(rule_index, selector),
style, None))
else:
for elem in matches:
pseudo_style_map[elem].append(
StyleDeclaration(specificity(rule_index, selector),
style, m.group(1)))
process_sheet(html_css_stylesheet(container), 'user-agent.css')
for elem in root.iterdescendants(XHTML('style'), XHTML('link')):
if elem.tag.lower().endswith('style'):
if not elem.text:
continue
sheet = container.parse_css(elem.text)
sheet_name = name
else:
if (elem.get('type') or 'text/css').lower() not in OEB_STYLES or \
(elem.get('rel') or 'stylesheet').lower() != 'stylesheet' or \
not media_ok(elem.get('media')):
continue
href = elem.get('href')
if not href:
continue
sheet_name = container.href_to_name(href, name)
if not container.has_name(sheet_name):
continue
sheet = container.parsed(sheet_name)
if not isinstance(sheet, CSSStyleSheet):
continue
process_sheet(sheet, sheet_name)
for elem in root.xpath('//*[@style]'):
text = elem.get('style')
if text:
style = container.parse_css(text, is_declaration=True)
style_map[elem].append(
StyleDeclaration(Specificity(1, 0, 0, 0, 0),
normalize_style_declaration(style, name),
None))
for l in (style_map, pseudo_style_map):
for x in l.itervalues():
x.sort(key=itemgetter(0), reverse=True)
style_map = {
elem: resolve_declarations(x)
for elem, x in style_map.iteritems()
}
pseudo_style_map = {
elem: resolve_pseudo_declarations(x)
for elem, x in pseudo_style_map.iteritems()
}
return partial(resolve_property,
style_map), partial(resolve_pseudo_property, style_map,
pseudo_style_map), select
def resolve_styles(container, name, select=None, sheet_callback=None):
root = container.parsed(name)
select = select or Select(root, ignore_inappropriate_pseudo_classes=True)
style_map = defaultdict(list)
pseudo_style_map = defaultdict(list)
rule_index_counter = count()
pseudo_pat = re.compile(u':{1,2}(%s)' % ('|'.join(INAPPROPRIATE_PSEUDO_CLASSES)), re.I)
def process_sheet(sheet, sheet_name):
if sheet_callback is not None:
sheet_callback(sheet, sheet_name)
for rule, sheet_name, rule_index in iterrules(container, sheet_name, rules=sheet, rule_index_counter=rule_index_counter, rule_type='STYLE_RULE'):
for selector in rule.selectorList:
text = selector.selectorText
try:
matches = tuple(select(text))
except SelectorError as err:
container.log.error('Ignoring CSS rule with invalid selector: %r (%s)' % (text, as_unicode(err)))
continue
m = pseudo_pat.search(text)
style = normalize_style_declaration(rule.style, sheet_name)
if m is None:
for elem in matches:
style_map[elem].append(StyleDeclaration(specificity(rule_index, selector), style, None))
else:
for elem in matches:
pseudo_style_map[elem].append(StyleDeclaration(specificity(rule_index, selector), style, m.group(1)))
process_sheet(html_css_stylesheet(container), 'user-agent.css')
for elem in root.iterdescendants(XHTML('style'), XHTML('link')):
if elem.tag.lower().endswith('style'):
if not elem.text:
continue
sheet = container.parse_css(elem.text)
sheet_name = name
else:
if (elem.get('type') or 'text/css').lower() not in OEB_STYLES or \
(elem.get('rel') or 'stylesheet').lower() != 'stylesheet' or \
not media_ok(elem.get('media')):
continue
href = elem.get('href')
if not href:
continue
sheet_name = container.href_to_name(href, name)
if not container.has_name(sheet_name):
continue
sheet = container.parsed(sheet_name)
if not isinstance(sheet, CSSStyleSheet):
continue
process_sheet(sheet, sheet_name)
for elem in root.xpath('//*[@style]'):
text = elem.get('style')
if text:
style = container.parse_css(text, is_declaration=True)
style_map[elem].append(StyleDeclaration(Specificity(1, 0, 0, 0, 0), normalize_style_declaration(style, name), None))
for l in (style_map, pseudo_style_map):
for x in itervalues(l):
x.sort(key=itemgetter(0), reverse=True)
style_map = {elem:resolve_declarations(x) for elem, x in iteritems(style_map)}
pseudo_style_map = {elem:resolve_pseudo_declarations(x) for elem, x in iteritems(pseudo_style_map)}
return partial(resolve_property, style_map), partial(resolve_pseudo_property, style_map, pseudo_style_map), select
