76 lines
2.9 KiB
Python
76 lines
2.9 KiB
Python
import regex
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import re
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class RegexMoveToCol:
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def __init__(self, match: str, to: str, with_input_iteration: list[str]|None = None):
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self.match = match
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self.to = to
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if with_input_iteration is not None:
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with_input_iteration = (
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[[with_input_iteration]]
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if isinstance(with_input_iteration, str)
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else [
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x if isinstance(x, list) else [x]
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for x in (with_input_iteration if isinstance(with_input_iteration, (list, tuple)) else [with_input_iteration])
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]
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)
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self.with_input_iteration = with_input_iteration
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self.__operation_input_depth = self.__find_operation_input_depth()
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def __find_operation_input_depth(self):
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if not self.with_input_iteration:
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return None
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return max(len(option) for option in self.with_input_iteration)
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@staticmethod
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def _get_merged_groups(regex_pattern: str, value: str) -> str:
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match = regex.search(regex_pattern, value)
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if not match:
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return None
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return "".join(g for g in match.groups() if g is not None)
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@staticmethod
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def _remove_regex_groups(pattern, value):
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regex = re.compile(pattern)
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def repl(m):
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s = m.group(0)
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# remove all group spans from the full match
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spans = [m.span(i) for i in range(1, len(m.groups()) + 1) if m.span(i) != (-1, -1)]
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spans.sort(reverse=True)
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for start, end in spans:
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rel_start = start - m.start()
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rel_end = end - m.start()
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s = s[:rel_start] + s[rel_end:]
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return s
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return regex.sub(repl, value)
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def do_changes(self, source_coll: str, used_regex: str, row: dict[str, str], changes={}):
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current_to = changes.get(self.to, row[source_coll].value)
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current_source = changes.get(source_coll, row[source_coll].value)
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pending_res_to = self._get_merged_groups(used_regex, current_to)
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if pending_res_to is not None:
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changes[self.to] = pending_res_to
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changes[source_coll] = self._remove_regex_groups(used_regex, current_source)
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return changes
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def execute_on_row(self, row: dict[str, str], source_coll: str = None):
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if not source_coll:
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raise ValueError("source_col required")
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if self.with_input_iteration:
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changes = {}
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for iteration in self.with_input_iteration:
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used_regex = self.match
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for operation_id in range(0, self.__operation_input_depth):
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used_regex = used_regex.replace(f"{{{{% {operation_id} %}}}}", iteration[operation_id])
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changes = self.do_changes(source_coll, used_regex, row, changes)
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return changes
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else:
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return self.do_changes(source_coll, self.match, row) |