def compile_selector(cls, el, attr, source_location, invertable=False):
"""
Compiles a single selector taken from the given attribute of
an element.
"""
inverted = False
value = el.get(attr)
if value is None:
return None
inverted = False
if invertable and value.strip().startswith('not:'):
inverted = True
value = value.strip()[4:]
result = Selector.parse(value)
if invertable:
result.inverted = inverted
return result
def view_selection(self, req, resp, url):
"""
View the highlighted selector (from `action_view`)
"""
from deliverance.selector import Selector
doc = document_fromstring(resp.body)
el = Element('base')
el.set('href', posixpath.dirname(url) + '/')
doc.head.insert(0, el)
selector = Selector.parse(req.GET['selector'])
dummy_type, elements, dummy_attributes = selector(doc)
if not elements:
template = self._not_found_template
else:
template = self._found_template
all_elements = []
els_in_head = False
for index, el in enumerate(elements):
el_in_head = self._el_in_head(el)
if el_in_head:
els_in_head = True
anchor = 'deliverance-selection'
if index:
anchor += '-%s' % index
if el.get('id'):
anchor = el.get('id')
## FIXME: is a <a name> better?
if not el_in_head:
el.set('id', anchor)
else:
anchor = None
## FIXME: add :target CSS rule
## FIXME: or better, some Javascript
all_elements.append((anchor, el))
if not el_in_head:
style = el.get('style', '')
if style:
style += '; '
style += '/* deliverance */ border: 2px dotted #f00'
el.set('style', style)
else:
el.set('DELIVERANCE-MATCH', '1')
def highlight(html_code):
"""Highlights the given code (for use in the template)"""
if isinstance(html_code, _Element):
html_code = tostring(html_code)
return html(pygments_highlight(html_code, HtmlLexer(),
HtmlFormatter(noclasses=True)))
def format_tag(tag):
"""Highlights the lxml HTML tag"""
return highlight(tostring(tag).split('>')[0]+'>')
def wrap_html(html, width=100):
if isinstance(html, _Element):
html = tostring(html)
lines = html.splitlines()
new_lines = []
def wrap_html_line(line):
if len(line) <= width:
return [line]
match_trail = re.search(r'^[^<]*</.*?>', line, re.S)
if match_trail:
result = [match_trail.group(0)]
result.extend(wrap_html_line(line[match_trail.end():]))
return result
match1 = re.search(r'^[^<]*<[^>]*>', line, re.S)
match2 = re.search(r'<[^>]*>[^<>]*$', line, re.S)
if not match1 or not match2:
return [line]
result = [match1.group(0)]
result.extend(wrap_html_line(line[match1.end():match2.start()]))
result.append(match2.group(0))
return result
for line in lines:
new_lines.extend(wrap_html_line(line))
return '\n'.join(new_lines)
def mark_deliv_match(highlighted_text):
result = re.sub(r'(?:<[^/][^>]*>)*<.*?DELIVERANCE-MATCH=.*?>(?:</[^>]*>)*', lambda match: r'<b style="background-color: #ff8">%s</b>' % match.group(0), unicode(highlighted_text), re.S)
return html(result)
text = template.substitute(
base_url=url,
els_in_head=els_in_head, doc=doc,
elements=all_elements, selector=selector,
format_tag=format_tag, highlight=highlight,
wrap_html=wrap_html, mark_deliv_match=mark_deliv_match)
message = fromstring(
self._message_template.substitute(message=text, url=url))
if doc.body.text:
message.tail = doc.body.text
doc.body.text = ''
doc.body.insert(0, message)
text = tostring(doc)
return Response(text)
def view_selection(self, req, resp, url):
"""
View the highlighted selector (from `action_view`)
"""
from deliverance.selector import Selector
doc = document_fromstring(resp.body)
el = Element('base')
el.set('href', posixpath.dirname(url) + '/')
doc.head.insert(0, el)
selector = Selector.parse(req.GET['selector'])
dummy_type, elements, dummy_attributes = selector(doc)
if not elements:
template = self._not_found_template
else:
template = self._found_template
all_elements = []
els_in_head = False
for index, el in enumerate(elements):
el_in_head = self._el_in_head(el)
if el_in_head:
els_in_head = True
anchor = 'deliverance-selection'
if index:
anchor += '-%s' % index
if el.get('id'):
anchor = el.get('id')
## FIXME: is a <a name> better?
if not el_in_head:
el.set('id', anchor)
else:
anchor = None
## FIXME: add :target CSS rule
## FIXME: or better, some Javascript
all_elements.append((anchor, el))
if not el_in_head:
style = el.get('style', '')
if style:
style += '; '
style += '/* deliverance */ border: 2px dotted #f00'
el.set('style', style)
else:
el.set('DELIVERANCE-MATCH', '1')
def highlight(html_code):
"""Highlights the given code (for use in the template)"""
if isinstance(html_code, _Element):
html_code = tostring(html_code)
return html(
pygments_highlight(html_code, HtmlLexer(),
HtmlFormatter(noclasses=True)))
def format_tag(tag):
"""Highlights the lxml HTML tag"""
return highlight(tostring(tag).split('>')[0] + '>')
def wrap_html(html, width=100):
if isinstance(html, _Element):
html = tostring(html)
lines = html.splitlines()
new_lines = []
def wrap_html_line(line):
if len(line) <= width:
return [line]
match_trail = re.search(r'^[^<]*</.*?>', line, re.S)
if match_trail:
result = [match_trail.group(0)]
result.extend(wrap_html_line(line[match_trail.end():]))
return result
match1 = re.search(r'^[^<]*<[^>]*>', line, re.S)
match2 = re.search(r'<[^>]*>[^<>]*$', line, re.S)
if not match1 or not match2:
return [line]
result = [match1.group(0)]
result.extend(wrap_html_line(
line[match1.end():match2.start()]))
result.append(match2.group(0))
return result
for line in lines:
new_lines.extend(wrap_html_line(line))
return '\n'.join(new_lines)
def mark_deliv_match(highlighted_text):
result = re.sub(
r'(?:<[^/][^>]*>)*<.*?DELIVERANCE-MATCH=.*?>(?:</[^>]*>)*',
lambda match: r'<b style="background-color: #ff8">%s</b>' %
match.group(0), unicode(highlighted_text), re.S)
return html(result)
text = template.substitute(base_url=url,
els_in_head=els_in_head,
doc=doc,
elements=all_elements,
selector=selector,
format_tag=format_tag,
highlight=highlight,
wrap_html=wrap_html,
mark_deliv_match=mark_deliv_match)
message = fromstring(
self._message_template.substitute(message=text, url=url))
if doc.body.text:
message.tail = doc.body.text
doc.body.text = ''
doc.body.insert(0, message)
text = tostring(doc)
return Response(text)
def clientside_action(action_name, content_selector, theme_selector):
"""Create one Action instance based on a clientside web subrequest"""
ActionClass = _actions[action_name]
return ActionClass(
source_location='web', content=Selector.parse(content_selector),
theme=Selector.parse(theme_selector))
