feat: indie status page MVP -- FastAPI + SQLite

- 8 DB models (services, incidents, monitors, subscribers, etc.)
- Full CRUD API for services, incidents, monitors
- Public status page with live data
- Incident detail page with timeline
- API key authentication
- Uptime monitoring scheduler
- 13 tests passing
- TECHNICAL_DESIGN.md with full spec

venv/lib/python3.11/site-packages/packaging/utils.py

@@ -0,0 +1,296 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import annotations
+
+import re
+from typing import NewType, Tuple, Union, cast
+
+from .tags import Tag, UnsortedTagsError, parse_tag
+from .version import InvalidVersion, Version, _TrimmedRelease
+
+__all__ = [
+    "BuildTag",
+    "InvalidName",
+    "InvalidSdistFilename",
+    "InvalidWheelFilename",
+    "NormalizedName",
+    "canonicalize_name",
+    "canonicalize_version",
+    "is_normalized_name",
+    "parse_sdist_filename",
+    "parse_wheel_filename",
+]
+
+
+def __dir__() -> list[str]:
+    return __all__
+
+
+BuildTag = Union[Tuple[()], Tuple[int, str]]
+
+NormalizedName = NewType("NormalizedName", str)
+"""
+A :class:`typing.NewType` of :class:`str`, representing a normalized name.
+"""
+
+
+class InvalidName(ValueError):
+    """
+    An invalid distribution name; users should refer to the packaging user guide.
+    """
+
+
+class InvalidWheelFilename(ValueError):
+    """
+    An invalid wheel filename was found, users should refer to PEP 427.
+    """
+
+
+class InvalidSdistFilename(ValueError):
+    """
+    An invalid sdist filename was found, users should refer to the packaging user guide.
+    """
+
+
+# Core metadata spec for `Name`
+_validate_regex = re.compile(
+    r"[a-z0-9]|[a-z0-9][a-z0-9._-]*[a-z0-9]", re.IGNORECASE | re.ASCII
+)
+_normalized_regex = re.compile(r"[a-z0-9]|[a-z0-9]([a-z0-9-](?!--))*[a-z0-9]", re.ASCII)
+# PEP 427: The build number must start with a digit.
+_build_tag_regex = re.compile(r"(\d+)(.*)", re.ASCII)
+
+
+def canonicalize_name(name: str, *, validate: bool = False) -> NormalizedName:
+    """
+    This function takes a valid Python package or extra name, and returns the
+    normalized form of it.
+
+    The return type is typed as :class:`NormalizedName`. This allows type
+    checkers to help require that a string has passed through this function
+    before use.
+
+    If **validate** is true, then the function will check if **name** is a valid
+    distribution name before normalizing.
+
+    :param str name: The name to normalize.
+    :param bool validate: Check whether the name is a valid distribution name.
+    :raises InvalidName: If **validate** is true and the name is not an
+        acceptable distribution name.
+
+    >>> from packaging.utils import canonicalize_name
+    >>> canonicalize_name("Django")
+    'django'
+    >>> canonicalize_name("oslo.concurrency")
+    'oslo-concurrency'
+    >>> canonicalize_name("requests")
+    'requests'
+    """
+    if validate and not _validate_regex.fullmatch(name):
+        raise InvalidName(f"name is invalid: {name!r}")
+    # Ensure all ``.`` and ``_`` are ``-``
+    # Emulates ``re.sub(r"[-_.]+", "-", name).lower()`` from PEP 503
+    # Much faster than re, and even faster than str.translate
+    value = name.lower().replace("_", "-").replace(".", "-")
+    # Condense repeats (faster than regex)
+    while "--" in value:
+        value = value.replace("--", "-")
+    return cast("NormalizedName", value)
+
+
+def is_normalized_name(name: str) -> bool:
+    """
+    Check if a name is already normalized (i.e. :func:`canonicalize_name` would
+    roundtrip to the same value).
+
+    :param str name: The name to check.
+
+    >>> from packaging.utils import is_normalized_name
+    >>> is_normalized_name("requests")
+    True
+    >>> is_normalized_name("Django")
+    False
+    """
+    return _normalized_regex.fullmatch(name) is not None
+
+
+def canonicalize_version(
+    version: Version | str, *, strip_trailing_zero: bool = True
+) -> str:
+    """Return a canonical form of a version as a string.
+
+    This function takes a string representing a package version (or a
+    :class:`~packaging.version.Version` instance), and returns the
+    normalized form of it. By default, it strips trailing zeros from
+    the release segment.
+
+    >>> from packaging.utils import canonicalize_version
+    >>> canonicalize_version('1.0.1')
+    '1.0.1'
+
+    Per PEP 625, versions may have multiple canonical forms, differing
+    only by trailing zeros.
+
+    >>> canonicalize_version('1.0.0')
+    '1'
+    >>> canonicalize_version('1.0.0', strip_trailing_zero=False)
+    '1.0.0'
+
+    Invalid versions are returned unaltered.
+
+    >>> canonicalize_version('foo bar baz')
+    'foo bar baz'
+
+    >>> canonicalize_version('1.4.0.0.0')
+    '1.4'
+    """
+    if isinstance(version, str):
+        try:
+            version = Version(version)
+        except InvalidVersion:
+            return str(version)
+    return str(_TrimmedRelease(version) if strip_trailing_zero else version)
+
+
+def parse_wheel_filename(
+    filename: str,
+    *,
+    validate_order: bool = False,
+) -> tuple[NormalizedName, Version, BuildTag, frozenset[Tag]]:
+    """
+    This function takes the filename of a wheel file, and parses it,
+    returning a tuple of name, version, build number, and tags.
+
+    The name part of the tuple is normalized and typed as
+    :class:`NormalizedName`. The version portion is an instance of
+    :class:`~packaging.version.Version`. The build number is ``()`` if
+    there is no build number in the wheel filename, otherwise a
+    two-item tuple of an integer for the leading digits and
+    a string for the rest of the build number. The tags portion is a
+    frozen set of :class:`~packaging.tags.Tag` instances (as the tag
+    string format allows multiple tags to be combined into a single
+    string).
+
+    If **validate_order** is true, compressed tag set components are
+    checked to be in sorted order as required by PEP 425.
+
+    :param str filename: The name of the wheel file.
+    :param bool validate_order: Check whether compressed tag set components
+        are in sorted order.
+    :raises InvalidWheelFilename: If the filename in question
+        does not follow the :ref:`wheel specification
+        <pypug:binary-distribution-format>`.
+
+    >>> from packaging.utils import parse_wheel_filename
+    >>> from packaging.tags import Tag
+    >>> from packaging.version import Version
+    >>> name, ver, build, tags = parse_wheel_filename("foo-1.0-py3-none-any.whl")
+    >>> name
+    'foo'
+    >>> ver == Version('1.0')
+    True
+    >>> tags == {Tag("py3", "none", "any")}
+    True
+    >>> not build
+    True
+
+    .. versionadded:: 26.1
+       The *validate_order* parameter.
+    """
+    if not filename.endswith(".whl"):
+        raise InvalidWheelFilename(
+            f"Invalid wheel filename (extension must be '.whl'): {filename!r}"
+        )
+
+    filename = filename[:-4]
+    dashes = filename.count("-")
+    if dashes not in (4, 5):
+        raise InvalidWheelFilename(
+            f"Invalid wheel filename (wrong number of parts): {filename!r}"
+        )
+
+    parts = filename.split("-", dashes - 2)
+    name_part = parts[0]
+    # See PEP 427 for the rules on escaping the project name.
+    if "__" in name_part or re.match(r"^[\w\d._]*$", name_part, re.UNICODE) is None:
+        raise InvalidWheelFilename(f"Invalid project name: {filename!r}")
+    name = canonicalize_name(name_part)
+
+    try:
+        version = Version(parts[1])
+    except InvalidVersion as e:
+        raise InvalidWheelFilename(
+            f"Invalid wheel filename (invalid version): {filename!r}"
+        ) from e
+
+    if dashes == 5:
+        build_part = parts[2]
+        build_match = _build_tag_regex.match(build_part)
+        if build_match is None:
+            raise InvalidWheelFilename(
+                f"Invalid build number: {build_part} in {filename!r}"
+            )
+        build = cast("BuildTag", (int(build_match.group(1)), build_match.group(2)))
+    else:
+        build = ()
+    tag_str = parts[-1]
+    try:
+        tags = parse_tag(tag_str, validate_order=validate_order)
+    except UnsortedTagsError:
+        raise InvalidWheelFilename(
+            f"Invalid wheel filename (compressed tag set components must be in "
+            f"sorted order per PEP 425): {filename!r}"
+        ) from None
+    return (name, version, build, tags)
+
+
+def parse_sdist_filename(filename: str) -> tuple[NormalizedName, Version]:
+    """
+    This function takes the filename of a sdist file (as specified
+    in the `Source distribution format`_ documentation), and parses
+    it, returning a tuple of the normalized name and version as
+    represented by an instance of :class:`~packaging.version.Version`.
+
+    :param str filename: The name of the sdist file.
+    :raises InvalidSdistFilename: If the filename does not end
+        with an sdist extension (``.zip`` or ``.tar.gz``), or if it does not
+        contain a dash separating the name and the version of the distribution.
+
+    >>> from packaging.utils import parse_sdist_filename
+    >>> from packaging.version import Version
+    >>> name, ver = parse_sdist_filename("foo-1.0.tar.gz")
+    >>> name
+    'foo'
+    >>> ver == Version('1.0')
+    True
+
+    .. _Source distribution format: https://packaging.python.org/specifications/source-distribution-format/#source-distribution-file-name
+    """
+    if filename.endswith(".tar.gz"):
+        file_stem = filename[: -len(".tar.gz")]
+    elif filename.endswith(".zip"):
+        file_stem = filename[: -len(".zip")]
+    else:
+        raise InvalidSdistFilename(
+            f"Invalid sdist filename (extension must be '.tar.gz' or '.zip'):"
+            f" {filename!r}"
+        )
+
+    # We are requiring a PEP 440 version, which cannot contain dashes,
+    # so we split on the last dash.
+    name_part, sep, version_part = file_stem.rpartition("-")
+    if not sep:
+        raise InvalidSdistFilename(f"Invalid sdist filename: {filename!r}")
+
+    name = canonicalize_name(name_part)
+
+    try:
+        version = Version(version_part)
+    except InvalidVersion as e:
+        raise InvalidSdistFilename(
+            f"Invalid sdist filename (invalid version): {filename!r}"
+        ) from e
+
+    return (name, version)