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Extend StringMobject.select_unisolated_substring to work for regular expressions

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Grant Sanderson 2022-12-29 14:18:46 -08:00
parent a54a81744d
commit 13fc8daba9
1 changed files with 6 additions and 3 deletions
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9
manimlib/mobject/svg/string_mobject.py
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@ -547,7 +547,7 @@ class StringMobject(SVGMobject, ABC):
def select_parts(self, selector: Selector) -> VGroup: def select_parts(self, selector: Selector) -> VGroup:
specified_substrings = self.get_specified_substrings() specified_substrings = self.get_specified_substrings()
if isinstance(selector, str) and selector not in specified_substrings: if isinstance(selector, (str, re.Pattern)) and selector not in specified_substrings:
return self.select_unisolated_substring(selector) return self.select_unisolated_substring(selector)
indices_list = self.get_submob_indices_lists_by_selector(selector) indices_list = self.get_submob_indices_lists_by_selector(selector)
return self.build_parts_from_indices_lists(indices_list) return self.build_parts_from_indices_lists(indices_list)
@ -563,11 +563,14 @@ class StringMobject(SVGMobject, ABC):
def substr_to_path_count(self, substr: str) -> int: def substr_to_path_count(self, substr: str) -> int:
return len(re.sub(R"\s", "", substr)) return len(re.sub(R"\s", "", substr))
def select_unisolated_substring(self, substr: str) -> VGroup: def select_unisolated_substring(self, pattern: str | re.Pattern) -> VGroup:
if isinstance(pattern, str):
pattern = re.compile(re.escape(pattern))
result = [] result = []
for match in re.finditer(re.escape(substr), self.string): for match in re.finditer(pattern, self.string):
index = match.start() index = match.start()
start = self.substr_to_path_count(self.string[:index]) start = self.substr_to_path_count(self.string[:index])
substr = match.group()
end = start + self.substr_to_path_count(substr) end = start + self.substr_to_path_count(substr)
result.append(self[start:end]) result.append(self[start:end])
return VGroup(*result) return VGroup(*result)