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Add support for __contains__ in the ResourceFork class #12

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Add support for __contains__ in the ResourceFork class #12

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21 changes: 15 additions & 6 deletions rsrcdump/resfork.py
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Original file line number Diff line number Diff line change
Expand Up @@ -72,6 +72,16 @@ def ordered_flat_list(self):
flat.append(self.tree[res_type][res_id])
return sorted(flat, key=lambda r: r.order)

def lint_resource_key(self, key: str | bytes):
if type(key) is str:
return parse_type_name(key)
if type(key) is not bytes:
raise TypeError("restype must convert to a bytes object")
if len(key) != 4:
raise ValueError("restype isn't 4 bytes")

return key

def __repr__(self) -> str:
s = ""
prefix = "ResourceFork("
Expand All @@ -82,13 +92,12 @@ def __repr__(self) -> str:
s += ")"
return s

def __contains__(self, key: str | bytes):
key = self.lint_resource_key(key)
return key in self.tree

def __getitem__(self, key: str | bytes) -> dict[int, Resource]:
if type(key) is str:
key = parse_type_name(key)
if type(key) is not bytes:
raise TypeError("restype must convert to a bytes object")
if len(key) != 4:
raise ValueError("restype isn't 4 bytes")
key = self.lint_resource_key(key)
return self.tree[key]

@staticmethod
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