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feature: Support XPath2.0 to 3.1 (#1774)

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This commit is contained in:
Constantin Hong
2023-11-14 00:42:21 +09:00
committed by GitHub
parent 5229094e44
commit 26931e0167
10 changed files with 541 additions and 21 deletions
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21
changedetectionio/forms.py
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@@ -328,11 +328,30 @@ class ValidateCSSJSONXPATHInput(object):
return
# Does it look like XPath?
if line.strip()[0] == '/':
if line.strip()[0] == '/' or line.strip().startswith('xpath:'):
if not self.allow_xpath:
raise ValidationError("XPath not permitted in this field!")
from lxml import etree, html
import elementpath
# xpath 2.0-3.1
from elementpath.xpath3 import XPath3Parser
tree = html.fromstring("<html></html>")
line = line.replace('xpath:', '')
try:
elementpath.select(tree, line.strip(), parser=XPath3Parser)
except elementpath.ElementPathError as e:
message = field.gettext('\'%s\' is not a valid XPath expression. (%s)')
raise ValidationError(message % (line, str(e)))
except:
raise ValidationError("A system-error occurred when validating your XPath expression")
if line.strip().startswith('xpath1:'):
if not self.allow_xpath:
raise ValidationError("XPath not permitted in this field!")
from lxml import etree, html
tree = html.fromstring("<html></html>")
line = line.replace('xpath1:', '')
try:
tree.xpath(line.strip())