Currently, the split extension only allows positive indexes for its segments. However, I want to pick the very last segment, and their quantity is arbitrary.
My workaround so far is extending the parser just for a small regex tweak:
from jsonpath_ng.ext.parser import ExtentedJsonPathParser
from jsonpath_ng.ext.string import Split
SPLIT_NEGATIVE_INDEXABLE = re.compile(r"split\((.),\s+(-?\d+),\s+(\d+|-1)\)")
class SplitNegativeIndexable(Split):
def __init__(self, method=None):
m = SPLIT_NEGATIVE_INDEXABLE.match(method)
self.char = m.group(1)
self.segment = int(m.group(2))
self.max_split = int(m.group(3))
self.method = method
class JsonPathParser(ExtentedJsonPathParser):
"""we need a docstring here otherwise jsonpath-rw starts grumbling"""
def p_jsonpath_named_operator(self, p):
"jsonpath : NAMED_OPERATOR"
if p[1].startswith("split("):
p[0] = SplitNegativeIndexable(p[1])
else:
super().p_jsonpath_named_operator(p)
I can send a proper PR once I finish working for today.
Currently, the
split
extension only allows positive indexes for its segments. However, I want to pick the very last segment, and their quantity is arbitrary.My workaround so far is extending the parser just for a small regex tweak:
I can send a proper PR once I finish working for today.