venv/lib/python3.11/site-packages/werkzeug/user_agent.py

   1 from __future__ import annotations
   2
   3
   4 class UserAgent:
   5     """Represents a parsed user agent header value.
   6
   7     The default implementation does no parsing, only the :attr:`string`
   8     attribute is set. A subclass may parse the string to set the
   9     common attributes or expose other information. Set
  10     :attr:`werkzeug.wrappers.Request.user_agent_class` to use a
  11     subclass.
  12
  13     :param string: The header value to parse.
  14
  15     .. versionadded:: 2.0
  16         This replaces the previous ``useragents`` module, but does not
  17         provide a built-in parser.
  18     """
  19
  20     platform: str | None = None
  21     """The OS name, if it could be parsed from the string."""
  22
  23     browser: str | None = None
  24     """The browser name, if it could be parsed from the string."""
  25
  26     version: str | None = None
  27     """The browser version, if it could be parsed from the string."""
  28
  29     language: str | None = None
  30     """The browser language, if it could be parsed from the string."""
  31
  32     def __init__(self, string: str) -> None:
  33         self.string: str = string
  34         """The original header value."""
  35
  36     def __repr__(self) -> str:
  37         return f"<{type(self).__name__} {self.browser}/{self.version}>"
  38
  39     def __str__(self) -> str:
  40         return self.string
  41
  42     def __bool__(self) -> bool:
  43         return bool(self.browser)
  44
  45     def to_header(self) -> str:
  46         """Convert to a header value."""
  47         return self.string