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48 lines
1.4 KiB
Python
48 lines
1.4 KiB
Python
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import typing as t
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class UserAgent:
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"""Represents a parsed user agent header value.
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The default implementation does no parsing, only the :attr:`string`
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attribute is set. A subclass may parse the string to set the
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common attributes or expose other information. Set
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:attr:`werkzeug.wrappers.Request.user_agent_class` to use a
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subclass.
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:param string: The header value to parse.
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.. versionadded:: 2.0
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This replaces the previous ``useragents`` module, but does not
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provide a built-in parser.
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"""
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platform: t.Optional[str] = None
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"""The OS name, if it could be parsed from the string."""
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browser: t.Optional[str] = None
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"""The browser name, if it could be parsed from the string."""
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version: t.Optional[str] = None
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"""The browser version, if it could be parsed from the string."""
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language: t.Optional[str] = None
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"""The browser language, if it could be parsed from the string."""
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def __init__(self, string: str) -> None:
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self.string: str = string
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"""The original header value."""
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def __repr__(self) -> str:
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return f"<{type(self).__name__} {self.browser}/{self.version}>"
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def __str__(self) -> str:
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return self.string
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def __bool__(self) -> bool:
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return bool(self.browser)
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def to_header(self) -> str:
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"""Convert to a header value."""
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return self.string
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