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File Content: `read_only.py`

from __future__ import annotations

import os.path

from virtualenv.util.lock import NoOpFileLock

from .via_disk_folder import AppDataDiskFolder, PyInfoStoreDisk


class ReadOnlyAppData(AppDataDiskFolder):
    can_update = False

    def __init__(self, folder: str) -> None:
        if not os.path.isdir(folder):
            msg = f"read-only app data directory {folder} does not exist"
            raise RuntimeError(msg)
        super().__init__(folder)
        self.lock = NoOpFileLock(folder)

    def reset(self) -> None:
        msg = "read-only app data does not support reset"
        raise RuntimeError(msg)

    def py_info_clear(self) -> None:
        raise NotImplementedError

    def py_info(self, path):
        return _PyInfoStoreDiskReadOnly(self.py_info_at, path)

    def embed_update_log(self, distribution, for_py_version):
        raise NotImplementedError


class _PyInfoStoreDiskReadOnly(PyInfoStoreDisk):
    def write(self, content):  # noqa: ARG002
        msg = "read-only app data python info cannot be updated"
        raise RuntimeError(msg)


__all__ = [
    "ReadOnlyAppData",
]

Name	Size	Permission
__pycache__	---	0755
__init__.py	1467 bytes	0644
base.py	2083 bytes	0644
na.py	1500 bytes	0644
read_only.py	1113 bytes	0644
via_disk_folder.py	5469 bytes	0644
via_tempdir.py	811 bytes	0644

File Content: read_only.py

File Content: `read_only.py`