Update 2025-04-13_16:43:49

venv/lib/python3.11/site-packages/starlette/convertors.py

@@ -0,0 +1,89 @@
+from __future__ import annotations
+
+import math
+import typing
+import uuid
+
+T = typing.TypeVar("T")
+
+
+class Convertor(typing.Generic[T]):
+    regex: typing.ClassVar[str] = ""
+
+    def convert(self, value: str) -> T:
+        raise NotImplementedError()  # pragma: no cover
+
+    def to_string(self, value: T) -> str:
+        raise NotImplementedError()  # pragma: no cover
+
+
+class StringConvertor(Convertor[str]):
+    regex = "[^/]+"
+
+    def convert(self, value: str) -> str:
+        return value
+
+    def to_string(self, value: str) -> str:
+        value = str(value)
+        assert "/" not in value, "May not contain path separators"
+        assert value, "Must not be empty"
+        return value
+
+
+class PathConvertor(Convertor[str]):
+    regex = ".*"
+
+    def convert(self, value: str) -> str:
+        return str(value)
+
+    def to_string(self, value: str) -> str:
+        return str(value)
+
+
+class IntegerConvertor(Convertor[int]):
+    regex = "[0-9]+"
+
+    def convert(self, value: str) -> int:
+        return int(value)
+
+    def to_string(self, value: int) -> str:
+        value = int(value)
+        assert value >= 0, "Negative integers are not supported"
+        return str(value)
+
+
+class FloatConvertor(Convertor[float]):
+    regex = r"[0-9]+(\.[0-9]+)?"
+
+    def convert(self, value: str) -> float:
+        return float(value)
+
+    def to_string(self, value: float) -> str:
+        value = float(value)
+        assert value >= 0.0, "Negative floats are not supported"
+        assert not math.isnan(value), "NaN values are not supported"
+        assert not math.isinf(value), "Infinite values are not supported"
+        return ("%0.20f" % value).rstrip("0").rstrip(".")
+
+
+class UUIDConvertor(Convertor[uuid.UUID]):
+    regex = "[0-9a-fA-F]{8}-?[0-9a-fA-F]{4}-?[0-9a-fA-F]{4}-?[0-9a-fA-F]{4}-?[0-9a-fA-F]{12}"
+
+    def convert(self, value: str) -> uuid.UUID:
+        return uuid.UUID(value)
+
+    def to_string(self, value: uuid.UUID) -> str:
+        return str(value)
+
+
+CONVERTOR_TYPES: dict[str, Convertor[typing.Any]] = {
+    "str": StringConvertor(),
+    "path": PathConvertor(),
+    "int": IntegerConvertor(),
+    "float": FloatConvertor(),
+    "uuid": UUIDConvertor(),
+}
+
+
+def register_url_convertor(key: str, convertor: Convertor[typing.Any]) -> None:
+    CONVERTOR_TYPES[key] = convertor