Ausgabe der neuen DB Einträge

venv/lib/python3.9/site-packages/parsel/xpathfuncs.py

@@ -0,0 +1,61 @@
+import re
+from lxml import etree
+
+from six import string_types
+
+from w3lib.html import HTML5_WHITESPACE
+
+regex = '[{}]+'.format(HTML5_WHITESPACE)
+replace_html5_whitespaces = re.compile(regex).sub
+
+
+def set_xpathfunc(fname, func):
+    """Register a custom extension function to use in XPath expressions.
+
+    The function ``func`` registered under ``fname`` identifier will be called
+    for every matching node, being passed a ``context`` parameter as well as
+    any parameters passed from the corresponding XPath expression.
+
+    If ``func`` is ``None``, the extension function will be removed.
+
+    See more `in lxml documentation`_.
+
+    .. _`in lxml documentation`: http://lxml.de/extensions.html#xpath-extension-functions
+
+    """
+    ns_fns = etree.FunctionNamespace(None)
+    if func is not None:
+        ns_fns[fname] = func
+    else:
+        del ns_fns[fname]
+
+
+def setup():
+    set_xpathfunc('has-class', has_class)
+
+
+def has_class(context, *classes):
+    """has-class function.
+
+    Return True if all ``classes`` are present in element's class attr.
+
+    """
+    if not context.eval_context.get('args_checked'):
+        if not classes:
+            raise ValueError(
+                'XPath error: has-class must have at least 1 argument')
+        for c in classes:
+            if not isinstance(c, string_types):
+                raise ValueError(
+                    'XPath error: has-class arguments must be strings')
+        context.eval_context['args_checked'] = True
+
+    node_cls = context.context_node.get('class')
+    if node_cls is None:
+        return False
+    node_cls = ' ' + node_cls + ' '
+    node_cls = replace_html5_whitespaces(' ', node_cls)
+    for cls in classes:
+        if ' ' + cls + ' ' not in node_cls:
+            return False
+    return True