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Viewing File: /opt/imunify360/venv/lib/python3.11/site-packages/lxml/html/formfill.py
from lxml.etree import XPath, ElementBase
from lxml.html import fromstring, XHTML_NAMESPACE
from lxml.html import _forms_xpath, _options_xpath, _nons, _transform_result
from lxml.html import defs
import copy
try:
basestring
except NameError:
# Python 3
basestring = str
__all__ = ['FormNotFound', 'fill_form', 'fill_form_html',
'insert_errors', 'insert_errors_html',
'DefaultErrorCreator']
class FormNotFound(LookupError):
"""
Raised when no form can be found
"""
_form_name_xpath = XPath('descendant-or-self::form[name=$name]|descendant-or-self::x:form[name=$name]', namespaces={'x':XHTML_NAMESPACE})
_input_xpath = XPath('|'.join(['descendant-or-self::'+_tag for _tag in ('input','select','textarea','x:input','x:select','x:textarea')]),
namespaces={'x':XHTML_NAMESPACE})
_label_for_xpath = XPath('//label[@for=$for_id]|//x:label[@for=$for_id]',
namespaces={'x':XHTML_NAMESPACE})
_name_xpath = XPath('descendant-or-self::*[@name=$name]')
def fill_form(
el,
values,
form_id=None,
form_index=None,
):
el = _find_form(el, form_id=form_id, form_index=form_index)
_fill_form(el, values)
def fill_form_html(html, values, form_id=None, form_index=None):
result_type = type(html)
if isinstance(html, basestring):
doc = fromstring(html)
else:
doc = copy.deepcopy(html)
fill_form(doc, values, form_id=form_id, form_index=form_index)
return _transform_result(result_type, doc)
def _fill_form(el, values):
counts = {}
if hasattr(values, 'mixed'):
# For Paste request parameters
values = values.mixed()
inputs = _input_xpath(el)
for input in inputs:
name = input.get('name')
if not name:
continue
if _takes_multiple(input):
value = values.get(name, [])
if not isinstance(value, (list, tuple)):
value = [value]
_fill_multiple(input, value)
elif name not in values:
continue
else:
index = counts.get(name, 0)
counts[name] = index + 1
value = values[name]
if isinstance(value, (list, tuple)):
try:
value = value[index]
except IndexError:
continue
elif index > 0:
continue
_fill_single(input, value)
def _takes_multiple(input):
if _nons(input.tag) == 'select' and input.get('multiple'):
# FIXME: multiple="0"?
return True
type = input.get('type', '').lower()
if type in ('radio', 'checkbox'):
return True
return False
def _fill_multiple(input, value):
type = input.get('type', '').lower()
if type == 'checkbox':
v = input.get('value')
if v is None:
if not value:
result = False
else:
result = value[0]
if isinstance(value, basestring):
# The only valid "on" value for an unnamed checkbox is 'on'
result = result == 'on'
_check(input, result)
else:
_check(input, v in value)
elif type == 'radio':
v = input.get('value')
_check(input, v in value)
else:
assert _nons(input.tag) == 'select'
for option in _options_xpath(input):
v = option.get('value')
if v is None:
# This seems to be the default, at least on IE
# FIXME: but I'm not sure
v = option.text_content()
_select(option, v in value)
def _check(el, check):
if check:
el.set('checked', '')
else:
if 'checked' in el.attrib:
del el.attrib['checked']
def _select(el, select):
if select:
el.set('selected', '')
else:
if 'selected' in el.attrib:
del el.attrib['selected']
def _fill_single(input, value):
if _nons(input.tag) == 'textarea':
input.text = value
else:
input.set('value', value)
def _find_form(el, form_id=None, form_index=None):
if form_id is None and form_index is None:
forms = _forms_xpath(el)
for form in forms:
return form
raise FormNotFound(
"No forms in page")
if form_id is not None:
form = el.get_element_by_id(form_id)
if form is not None:
return form
forms = _form_name_xpath(el, name=form_id)
if forms:
return forms[0]
else:
raise FormNotFound(
"No form with the name or id of %r (forms: %s)"
% (id, ', '.join(_find_form_ids(el))))
if form_index is not None:
forms = _forms_xpath(el)
try:
return forms[form_index]
except IndexError:
raise FormNotFound(
"There is no form with the index %r (%i forms found)"
% (form_index, len(forms)))
def _find_form_ids(el):
forms = _forms_xpath(el)
if not forms:
yield '(no forms)'
return
for index, form in enumerate(forms):
if form.get('id'):
if form.get('name'):
yield '%s or %s' % (form.get('id'),
form.get('name'))
else:
yield form.get('id')
elif form.get('name'):
yield form.get('name')
else:
yield '(unnamed form %s)' % index
############################################################
## Error filling
############################################################
class DefaultErrorCreator(object):
insert_before = True
block_inside = True
error_container_tag = 'div'
error_message_class = 'error-message'
error_block_class = 'error-block'
default_message = "Invalid"
def __init__(self, **kw):
for name, value in kw.items():
if not hasattr(self, name):
raise TypeError(
"Unexpected keyword argument: %s" % name)
setattr(self, name, value)
def __call__(self, el, is_block, message):
error_el = el.makeelement(self.error_container_tag)
if self.error_message_class:
error_el.set('class', self.error_message_class)
if is_block and self.error_block_class:
error_el.set('class', error_el.get('class', '')+' '+self.error_block_class)
if message is None or message == '':
message = self.default_message
if isinstance(message, ElementBase):
error_el.append(message)
else:
assert isinstance(message, basestring), (
"Bad message; should be a string or element: %r" % message)
error_el.text = message or self.default_message
if is_block and self.block_inside:
if self.insert_before:
error_el.tail = el.text
el.text = None
el.insert(0, error_el)
else:
el.append(error_el)
else:
parent = el.getparent()
pos = parent.index(el)
if self.insert_before:
parent.insert(pos, error_el)
else:
error_el.tail = el.tail
el.tail = None
parent.insert(pos+1, error_el)
default_error_creator = DefaultErrorCreator()
def insert_errors(
el,
errors,
form_id=None,
form_index=None,
error_class="error",
error_creator=default_error_creator,
):
el = _find_form(el, form_id=form_id, form_index=form_index)
for name, error in errors.items():
if error is None:
continue
for error_el, message in _find_elements_for_name(el, name, error):
assert isinstance(message, (basestring, type(None), ElementBase)), (
"Bad message: %r" % message)
_insert_error(error_el, message, error_class, error_creator)
def insert_errors_html(html, values, **kw):
result_type = type(html)
if isinstance(html, basestring):
doc = fromstring(html)
else:
doc = copy.deepcopy(html)
insert_errors(doc, values, **kw)
return _transform_result(result_type, doc)
def _insert_error(el, error, error_class, error_creator):
if _nons(el.tag) in defs.empty_tags or _nons(el.tag) == 'textarea':
is_block = False
else:
is_block = True
if _nons(el.tag) != 'form' and error_class:
_add_class(el, error_class)
if el.get('id'):
labels = _label_for_xpath(el, for_id=el.get('id'))
if labels:
for label in labels:
_add_class(label, error_class)
error_creator(el, is_block, error)
def _add_class(el, class_name):
if el.get('class'):
el.set('class', el.get('class')+' '+class_name)
else:
el.set('class', class_name)
def _find_elements_for_name(form, name, error):
if name is None:
# An error for the entire form
yield form, error
return
if name.startswith('#'):
# By id
el = form.get_element_by_id(name[1:])
if el is not None:
yield el, error
return
els = _name_xpath(form, name=name)
if not els:
# FIXME: should this raise an exception?
return
if not isinstance(error, (list, tuple)):
yield els[0], error
return
# FIXME: if error is longer than els, should it raise an error?
for el, err in zip(els, error):
if err is None:
continue
yield el, err
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