Vito Sansevero
d0ab5680d9
Every read-only SQLite open now uses one URI helper, so a library on a Windows network share works in backups, restores, moves and history reads. Unloading a model no longer blocks the server. A malformed /save body gets a 400, not a 500.
26 lines
987 B
Python
26 lines
987 B
Python
"""The read-only SQLite URI of a path, safe for Windows network shares."""
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import ntpath
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import os
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from pathlib import PurePosixPath, PureWindowsPath
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from urllib.parse import quote
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def readonly_uri(db_path, *, windows=None):
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"""The ``mode=ro`` SQLite URI of *db_path*, on this platform or the given one.
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pathlib spells a UNC path ``\\\\server\\share\\x.db`` as
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``file://server/share/x.db``, a remote authority SQLite refuses to open.
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With an empty authority (``file:////server/share/x.db``) SQLite hands
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Windows the ``//server/share`` path, which it opens as the UNC path.
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"""
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if windows is None:
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windows = os.name == "nt"
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db_path = os.path.abspath(db_path)
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if not windows:
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return PurePosixPath(db_path).as_uri() + "?mode=ro"
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path = PureWindowsPath(db_path)
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if ntpath.splitdrive(str(path))[0].startswith("\\\\"):
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return "file:" + quote("//" + path.as_posix()) + "?mode=ro"
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return path.as_uri() + "?mode=ro"
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