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# 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 logging
import platform
import re
import struct
import subprocess
import sys
import sysconfig
from importlib.machinery import EXTENSION_SUFFIXES
from typing import (
Any,
Iterable,
Iterator,
Sequence,
Tuple,
cast,
)
from . import _manylinux, _musllinux
logger = logging.getLogger(__name__)
PythonVersion = Sequence[int]
AppleVersion = Tuple[int, int]
INTERPRETER_SHORT_NAMES: dict[str, str] = {
"python": "py", # Generic.
"cpython": "cp",
"pypy": "pp",
"ironpython": "ip",
"jython": "jy",
}
_32_BIT_INTERPRETER = struct.calcsize("P") == 4
class Tag:
"""
A representation of the tag triple for a wheel.
Instances are considered immutable and thus are hashable. Equality checking
is also supported.
"""
__slots__ = ["_abi", "_hash", "_interpreter", "_platform"]
def __init__(self, interpreter: str, abi: str, platform: str) -> None:
self._interpreter = interpreter.lower()
self._abi = abi.lower()
self._platform = platform.lower()
# The __hash__ of every single element in a Set[Tag] will be evaluated each time
# that a set calls its `.disjoint()` method, which may be called hundreds of
# times when scanning a page of links for packages with tags matching that
# Set[Tag]. Pre-computing the value here produces significant speedups for
# downstream consumers.
self._hash = hash((self._interpreter, self._abi, self._platform))
@property
def interpreter(self) -> str:
return self._interpreter
@property
def abi(self) -> str:
return self._abi
@property
def platform(self) -> str:
return self._platform
def __eq__(self, other: object) -> bool:
if not isinstance(other, Tag):
return NotImplemented
return (
(self._hash == other._hash) # Short-circuit ASAP for perf reasons.
and (self._platform == other._platform)
and (self._abi == other._abi)
and (self._interpreter == other._interpreter)
)
def __hash__(self) -> int:
return self._hash
def __str__(self) -> str:
return f"{self._interpreter}-{self._abi}-{self._platform}"
def __repr__(self) -> str:
return f"<{self} @ {id(self)}>"
def __setstate__(self, state: tuple[None, dict[str, Any]]) -> None:
# The cached _hash is wrong when unpickling.
_, slots = state
for k, v in slots.items():
setattr(self, k, v)
self._hash = hash((self._interpreter, self._abi, self._platform))
def parse_tag(tag: str) -> frozenset[Tag]:
"""
Parses the provided tag (e.g. `py3-none-any`) into a frozenset of Tag instances.
Returning a set is required due to the possibility that the tag is a
compressed tag set.
"""
tags = set()
interpreters, abis, platforms = tag.split("-")
for interpreter in interpreters.split("."):
for abi in abis.split("."):
for platform_ in platforms.split("."):
tags.add(Tag(interpreter, abi, platform_))
return frozenset(tags)
def _get_config_var(name: str, warn: bool = False) -> int | str | None:
value: int | str | None = sysconfig.get_config_var(name)
if value is None and warn:
logger.debug(
"Config variable '%s' is unset, Python ABI tag may be incorrect", name
)
return value
def _normalize_string(string: str) -> str:
return string.replace(".", "_").replace("-", "_").replace(" ", "_")
def _is_threaded_cpython(abis: list[str]) -> bool:
"""
Determine if the ABI corresponds to a threaded (`--disable-gil`) build.
The threaded builds are indicated by a "t" in the abiflags.
"""
if len(abis) == 0:
return False
# expect e.g., cp313
m = re.match(r"cp\d+(.*)", abis[0])
if not m:
return False
abiflags = m.group(1)
return "t" in abiflags
def _abi3_applies(python_version: PythonVersion, threading: bool) -> bool:
"""
Determine if the Python version supports abi3.
PEP 384 was first implemented in Python 3.2. The threaded (`--disable-gil`)
builds do not support abi3.
"""
return len(python_version) > 1 and tuple(python_version) >= (3, 2) and not threading
def _cpython_abis(py_version: PythonVersion, warn: bool = False) -> list[str]:
py_version = tuple(py_version) # To allow for version comparison.
abis = []
version = _version_nodot(py_version[:2])
threading = debug = pymalloc = ucs4 = ""
with_debug = _get_config_var("Py_DEBUG", warn)
has_refcount = hasattr(sys, "gettotalrefcount")
# Windows doesn't set Py_DEBUG, so checking for support of debug-compiled
# extension modules is the best option.
# https://github.com/pypa/pip/issues/3383#issuecomment-173267692
has_ext = "_d.pyd" in EXTENSION_SUFFIXES
if with_debug or (with_debug is None and (has_refcount or has_ext)):
debug = "d"
if py_version >= (3, 13) and _get_config_var("Py_GIL_DISABLED", warn):
threading = "t"
if py_version < (3, 8):
with_pymalloc = _get_config_var("WITH_PYMALLOC", warn)
if with_pymalloc or with_pymalloc is None:
pymalloc = "m"
if py_version < (3, 3):
unicode_size = _get_config_var("Py_UNICODE_SIZE", warn)
if unicode_size == 4 or (
unicode_size is None and sys.maxunicode == 0x10FFFF
):
ucs4 = "u"
elif debug:
# Debug builds can also load "normal" extension modules.
# We can also assume no UCS-4 or pymalloc requirement.
abis.append(f"cp{version}{threading}")
abis.insert(0, f"cp{version}{threading}{debug}{pymalloc}{ucs4}")
return abis
def cpython_tags(
python_version: PythonVersion | None = None,
abis: Iterable[str] | None = None,
platforms: Iterable[str] | None = None,
*,
warn: bool = False,
) -> Iterator[Tag]:
"""
Yields the tags for a CPython interpreter.
The tags consist of:
- cp<python_version>-<abi>-<platform>
- cp<python_version>-abi3-<platform>
- cp<python_version>-none-<platform>
- cp<less than python_version>-abi3-<platform> # Older Python versions down to 3.2.
If python_version only specifies a major version then user-provided ABIs and
the 'none' ABItag will be used.
If 'abi3' or 'none' are specified in 'abis' then they will be yielded at
their normal position and not at the beginning.
"""
if not python_version:
python_version = sys.version_info[:2]
interpreter = f"cp{_version_nodot(python_version[:2])}"
if abis is None:
abis = _cpython_abis(python_version, warn) if len(python_version) > 1 else []
abis = list(abis)
# 'abi3' and 'none' are explicitly handled later.
for explicit_abi in ("abi3", "none"):
try:
abis.remove(explicit_abi)
except ValueError: # noqa: PERF203
pass
platforms = list(platforms or platform_tags())
for abi in abis:
for platform_ in platforms:
yield Tag(interpreter, abi, platform_)
threading = _is_threaded_cpython(abis)
use_abi3 = _abi3_applies(python_version, threading)
if use_abi3:
yield from (Tag(interpreter, "abi3", platform_) for platform_ in platforms)
yield from (Tag(interpreter, "none", platform_) for platform_ in platforms)
if use_abi3:
for minor_version in range(python_version[1] - 1, 1, -1):
for platform_ in platforms:
version = _version_nodot((python_version[0], minor_version))
interpreter = f"cp{version}"
yield Tag(interpreter, "abi3", platform_)
def _generic_abi() -> list[str]:
"""
Return the ABI tag based on EXT_SUFFIX.
"""
# The following are examples of `EXT_SUFFIX`.
# We want to keep the parts which are related to the ABI and remove the
# parts which are related to the platform:
# - linux: '.cpython-310-x86_64-linux-gnu.so' => cp310
# - mac: '.cpython-310-darwin.so' => cp310
# - win: '.cp310-win_amd64.pyd' => cp310
# - win: '.pyd' => cp37 (uses _cpython_abis())
# - pypy: '.pypy38-pp73-x86_64-linux-gnu.so' => pypy38_pp73
# - graalpy: '.graalpy-38-native-x86_64-darwin.dylib'
# => graalpy_38_native
ext_suffix = _get_config_var("EXT_SUFFIX", warn=True)
if not isinstance(ext_suffix, str) or ext_suffix[0] != ".":
raise SystemError("invalid sysconfig.get_config_var('EXT_SUFFIX')")
parts = ext_suffix.split(".")
if len(parts) < 3:
# CPython3.7 and earlier uses ".pyd" on Windows.
return _cpython_abis(sys.version_info[:2])
soabi = parts[1]
if soabi.startswith("cpython"):
# non-windows
abi = "cp" + soabi.split("-")[1]
elif soabi.startswith("cp"):
# windows
abi = soabi.split("-")[0]
elif soabi.startswith("pypy"):
abi = "-".join(soabi.split("-")[:2])
elif soabi.startswith("graalpy"):
abi = "-".join(soabi.split("-")[:3])
elif soabi:
# pyston, ironpython, others?
abi = soabi
else:
return []
return [_normalize_string(abi)]
def generic_tags(
interpreter: str | None = None,
abis: Iterable[str] | None = None,
platforms: Iterable[str] | None = None,
*,
warn: bool = False,
) -> Iterator[Tag]:
"""
Yields the tags for a generic interpreter.
The tags consist of:
- <interpreter>-<abi>-<platform>
The "none" ABI will be added if it was not explicitly provided.
"""
if not interpreter:
interp_name = interpreter_name()
interp_version = interpreter_version(warn=warn)
interpreter = f"{interp_name}{interp_version}"
abis = _generic_abi() if abis is None else list(abis)
platforms = list(platforms or platform_tags())
if "none" not in abis:
abis.append("none")
for abi in abis:
for platform_ in platforms:
yield Tag(interpreter, abi, platform_)
def _py_interpreter_range(py_version: PythonVersion) -> Iterator[str]:
"""
Yields Python versions in descending order.
After the latest version, the major-only version will be yielded, and then
all previous versions of that major version.
"""
if len(py_version) > 1:
yield f"py{_version_nodot(py_version[:2])}"
yield f"py{py_version[0]}"
if len(py_version) > 1:
for minor in range(py_version[1] - 1, -1, -1):
yield f"py{_version_nodot((py_version[0], minor))}"
def compatible_tags(
python_version: PythonVersion | None = None,
interpreter: str | None = None,
platforms: Iterable[str] | None = None,
) -> Iterator[Tag]:
"""
Yields the sequence of tags that are compatible with a specific version of Python.
The tags consist of:
- py*-none-<platform>
- <interpreter>-none-any # ... if `interpreter` is provided.
- py*-none-any
"""
if not python_version:
python_version = sys.version_info[:2]
platforms = list(platforms or platform_tags())
for version in _py_interpreter_range(python_version):
for platform_ in platforms:
yield Tag(version, "none", platform_)
if interpreter:
yield Tag(interpreter, "none", "any")
for version in _py_interpreter_range(python_version):
yield Tag(version, "none", "any")
def _mac_arch(arch: str, is_32bit: bool = _32_BIT_INTERPRETER) -> str:
if not is_32bit:
return arch
if arch.startswith("ppc"):
return "ppc"
return "i386"
def _mac_binary_formats(version: AppleVersion, cpu_arch: str) -> list[str]:
formats = [cpu_arch]
if cpu_arch == "x86_64":
if version < (10, 4):
return []
formats.extend(["intel", "fat64", "fat32"])
elif cpu_arch == "i386":
if version < (10, 4):
return []
formats.extend(["intel", "fat32", "fat"])
elif cpu_arch == "ppc64":
# TODO: Need to care about 32-bit PPC for ppc64 through 10.2?
if version > (10, 5) or version < (10, 4):
return []
formats.append("fat64")
elif cpu_arch == "ppc":
if version > (10, 6):
return []
formats.extend(["fat32", "fat"])
if cpu_arch in {"arm64", "x86_64"}:
formats.append("universal2")
if cpu_arch in {"x86_64", "i386", "ppc64", "ppc", "intel"}:
formats.append("universal")
return formats
def mac_platforms(
version: AppleVersion | None = None, arch: str | None = None
) -> Iterator[str]:
"""
Yields the platform tags for a macOS system.
The `version` parameter is a two-item tuple specifying the macOS version to
generate platform tags for. The `arch` parameter is the CPU architecture to
generate platform tags for. Both parameters default to the appropriate value
for the current system.
"""
version_str, _, cpu_arch = platform.mac_ver()
if version is None:
version = cast("AppleVersion", tuple(map(int, version_str.split(".")[:2])))
if version == (10, 16):
# When built against an older macOS SDK, Python will report macOS 10.16
# instead of the real version.
version_str = subprocess.run(
[
sys.executable,
"-sS",
"-c",
"import platform; print(platform.mac_ver()[0])",
],
check=True,
env={"SYSTEM_VERSION_COMPAT": "0"},
stdout=subprocess.PIPE,
text=True,
).stdout
version = cast("AppleVersion", tuple(map(int, version_str.split(".")[:2])))
if arch is None:
arch = _mac_arch(cpu_arch)
if (10, 0) <= version < (11, 0):
# Prior to Mac OS 11, each yearly release of Mac OS bumped the
# "minor" version number. The major version was always 10.
major_version = 10
for minor_version in range(version[1], -1, -1):
compat_version = major_version, minor_version
binary_formats = _mac_binary_formats(compat_version, arch)
for binary_format in binary_formats:
yield f"macosx_{major_version}_{minor_version}_{binary_format}"
if version >= (11, 0):
# Starting with Mac OS 11, each yearly release bumps the major version
# number. The minor versions are now the midyear updates.
minor_version = 0
for major_version in range(version[0], 10, -1):
compat_version = major_version, minor_version
binary_formats = _mac_binary_formats(compat_version, arch)
for binary_format in binary_formats:
yield f"macosx_{major_version}_{minor_version}_{binary_format}"
if version >= (11, 0):
# Mac OS 11 on x86_64 is compatible with binaries from previous releases.
# Arm64 support was introduced in 11.0, so no Arm binaries from previous
# releases exist.
#
# However, the "universal2" binary format can have a
# macOS version earlier than 11.0 when the x86_64 part of the binary supports
# that version of macOS.
major_version = 10
if arch == "x86_64":
for minor_version in range(16, 3, -1):
compat_version = major_version, minor_version
binary_formats = _mac_binary_formats(compat_version, arch)
for binary_format in binary_formats:
yield f"macosx_{major_version}_{minor_version}_{binary_format}"
else:
for minor_version in range(16, 3, -1):
compat_version = major_version, minor_version
binary_format = "universal2"
yield f"macosx_{major_version}_{minor_version}_{binary_format}"
def ios_platforms(
version: AppleVersion | None = None, multiarch: str | None = None
) -> Iterator[str]:
"""
Yields the platform tags for an iOS system.
:param version: A two-item tuple specifying the iOS version to generate
platform tags for. Defaults to the current iOS version.
:param multiarch: The CPU architecture+ABI to generate platform tags for -
(the value used by `sys.implementation._multiarch` e.g.,
`arm64_iphoneos` or `x84_64_iphonesimulator`). Defaults to the current
multiarch value.
"""
if version is None:
# if iOS is the current platform, ios_ver *must* be defined. However,
# it won't exist for CPython versions before 3.13, which causes a mypy
# error.
_, release, _, _ = platform.ios_ver() # type: ignore[attr-defined, unused-ignore]
version = cast("AppleVersion", tuple(map(int, release.split(".")[:2])))
if multiarch is None:
multiarch = sys.implementation._multiarch
multiarch = multiarch.replace("-", "_")
ios_platform_template = "ios_{major}_{minor}_{multiarch}"
# Consider any iOS major.minor version from the version requested, down to
# 12.0. 12.0 is the first iOS version that is known to have enough features
# to support CPython. Consider every possible minor release up to X.9. There
# highest the minor has ever gone is 8 (14.8 and 15.8) but having some extra
# candidates that won't ever match doesn't really hurt, and it saves us from
# having to keep an explicit list of known iOS versions in the code. Return
# the results descending order of version number.
# If the requested major version is less than 12, there won't be any matches.
if version[0] < 12:
return
# Consider the actual X.Y version that was requested.
yield ios_platform_template.format(
major=version[0], minor=version[1], multiarch=multiarch
)
# Consider every minor version from X.0 to the minor version prior to the
# version requested by the platform.
for minor in range(version[1] - 1, -1, -1):
yield ios_platform_template.format(
major=version[0], minor=minor, multiarch=multiarch
)
for major in range(version[0] - 1, 11, -1):
for minor in range(9, -1, -1):
yield ios_platform_template.format(
major=major, minor=minor, multiarch=multiarch
)
def android_platforms(
api_level: int | None = None, abi: str | None = None
) -> Iterator[str]:
"""
Yields the :attr:`~Tag.platform` tags for Android. If this function is invoked on
non-Android platforms, the ``api_level`` and ``abi`` arguments are required.
:param int api_level: The maximum `API level
<https://developer.android.com/tools/releases/platforms>`__ to return. Defaults
to the current system's version, as returned by ``platform.android_ver``.
:param str abi: The `Android ABI <https://developer.android.com/ndk/guides/abis>`__,
e.g. ``arm64_v8a``. Defaults to the current system's ABI , as returned by
``sysconfig.get_platform``. Hyphens and periods will be replaced with
underscores.
"""
if platform.system() != "Android" and (api_level is None or abi is None):
raise TypeError(
"on non-Android platforms, the api_level and abi arguments are required"
)
if api_level is None:
# Python 3.13 was the first version to return platform.system() == "Android",
# and also the first version to define platform.android_ver().
api_level = platform.android_ver().api_level # type: ignore[attr-defined]
if abi is None:
abi = sysconfig.get_platform().split("-")[-1]
abi = _normalize_string(abi)
# 16 is the minimum API level known to have enough features to support CPython
# without major patching. Yield every API level from the maximum down to the
# minimum, inclusive.
min_api_level = 16
for ver in range(api_level, min_api_level - 1, -1):
yield f"android_{ver}_{abi}"
def _linux_platforms(is_32bit: bool = _32_BIT_INTERPRETER) -> Iterator[str]:
linux = _normalize_string(sysconfig.get_platform())
if not linux.startswith("linux_"):
# we should never be here, just yield the sysconfig one and return
yield linux
return
if is_32bit:
if linux == "linux_x86_64":
linux = "linux_i686"
elif linux == "linux_aarch64":
linux = "linux_armv8l"
_, arch = linux.split("_", 1)
archs = {"armv8l": ["armv8l", "armv7l"]}.get(arch, [arch])
yield from _manylinux.platform_tags(archs)
yield from _musllinux.platform_tags(archs)
for arch in archs:
yield f"linux_{arch}"
def _generic_platforms() -> Iterator[str]:
yield _normalize_string(sysconfig.get_platform())
def platform_tags() -> Iterator[str]:
"""
Provides the platform tags for this installation.
"""
if platform.system() == "Darwin":
return mac_platforms()
elif platform.system() == "iOS":
return ios_platforms()
elif platform.system() == "Android":
return android_platforms()
elif platform.system() == "Linux":
return _linux_platforms()
else:
return _generic_platforms()
def interpreter_name() -> str:
"""
Returns the name of the running interpreter.
Some implementations have a reserved, two-letter abbreviation which will
be returned when appropriate.
"""
name = sys.implementation.name
return INTERPRETER_SHORT_NAMES.get(name) or name
def interpreter_version(*, warn: bool = False) -> str:
"""
Returns the version of the running interpreter.
"""
version = _get_config_var("py_version_nodot", warn=warn)
return str(version) if version else _version_nodot(sys.version_info[:2])
def _version_nodot(version: PythonVersion) -> str:
return "".join(map(str, version))
def sys_tags(*, warn: bool = False) -> Iterator[Tag]:
"""
Returns the sequence of tag triples for the running interpreter.
The order of the sequence corresponds to priority order for the
interpreter, from most to least important.
"""
interp_name = interpreter_name()
if interp_name == "cp":
yield from cpython_tags(warn=warn)
else:
yield from generic_tags()
if interp_name == "pp":
interp = "pp3"
elif interp_name == "cp":
interp = "cp" + interpreter_version(warn=warn)
else:
interp = None
yield from compatible_tags(interpreter=interp)

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# 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, parse_tag
from .version import InvalidVersion, Version, _TrimmedRelease
BuildTag = Union[Tuple[()], Tuple[int, str]]
NormalizedName = NewType("NormalizedName", str)
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)
_normalized_regex = re.compile(r"[a-z0-9]|[a-z0-9]([a-z0-9-](?!--))*[a-z0-9]")
# PEP 427: The build number must start with a digit.
_build_tag_regex = re.compile(r"(\d+)(.*)")
def canonicalize_name(name: str, *, validate: bool = False) -> NormalizedName:
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:
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.
>>> 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'
"""
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,
) -> tuple[NormalizedName, Version, BuildTag, frozenset[Tag]]:
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 = ()
tags = parse_tag(parts[-1])
return (name, version, build, tags)
def parse_sdist_filename(filename: str) -> tuple[NormalizedName, Version]:
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)

View File

@@ -0,0 +1,792 @@
# 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.
"""
.. testsetup::
from pip._vendor.packaging.version import parse, Version
"""
from __future__ import annotations
import re
import sys
import typing
from typing import (
Any,
Callable,
Literal,
NamedTuple,
SupportsInt,
Tuple,
TypedDict,
Union,
)
from ._structures import Infinity, InfinityType, NegativeInfinity, NegativeInfinityType
if typing.TYPE_CHECKING:
from typing_extensions import Self, Unpack
if sys.version_info >= (3, 13): # pragma: no cover
from warnings import deprecated as _deprecated
elif typing.TYPE_CHECKING:
from typing_extensions import deprecated as _deprecated
else: # pragma: no cover
import functools
import warnings
def _deprecated(message: str) -> object:
def decorator(func: object) -> object:
@functools.wraps(func)
def wrapper(*args: object, **kwargs: object) -> object:
warnings.warn(
message,
category=DeprecationWarning,
stacklevel=2,
)
return func(*args, **kwargs)
return wrapper
return decorator
_LETTER_NORMALIZATION = {
"alpha": "a",
"beta": "b",
"c": "rc",
"pre": "rc",
"preview": "rc",
"rev": "post",
"r": "post",
}
__all__ = ["VERSION_PATTERN", "InvalidVersion", "Version", "parse"]
LocalType = Tuple[Union[int, str], ...]
CmpPrePostDevType = Union[InfinityType, NegativeInfinityType, Tuple[str, int]]
CmpLocalType = Union[
NegativeInfinityType,
Tuple[Union[Tuple[int, str], Tuple[NegativeInfinityType, Union[int, str]]], ...],
]
CmpKey = Tuple[
int,
Tuple[int, ...],
CmpPrePostDevType,
CmpPrePostDevType,
CmpPrePostDevType,
CmpLocalType,
]
VersionComparisonMethod = Callable[[CmpKey, CmpKey], bool]
class _VersionReplace(TypedDict, total=False):
epoch: int | None
release: tuple[int, ...] | None
pre: tuple[Literal["a", "b", "rc"], int] | None
post: int | None
dev: int | None
local: str | None
def parse(version: str) -> Version:
"""Parse the given version string.
>>> parse('1.0.dev1')
<Version('1.0.dev1')>
:param version: The version string to parse.
:raises InvalidVersion: When the version string is not a valid version.
"""
return Version(version)
class InvalidVersion(ValueError):
"""Raised when a version string is not a valid version.
>>> Version("invalid")
Traceback (most recent call last):
...
packaging.version.InvalidVersion: Invalid version: 'invalid'
"""
class _BaseVersion:
__slots__ = ()
# This can also be a normal member (see the packaging_legacy package);
# we are just requiring it to be readable. Actually defining a property
# has runtime effect on subclasses, so it's typing only.
if typing.TYPE_CHECKING:
@property
def _key(self) -> tuple[Any, ...]: ...
def __hash__(self) -> int:
return hash(self._key)
# Please keep the duplicated `isinstance` check
# in the six comparisons hereunder
# unless you find a way to avoid adding overhead function calls.
def __lt__(self, other: _BaseVersion) -> bool:
if not isinstance(other, _BaseVersion):
return NotImplemented
return self._key < other._key
def __le__(self, other: _BaseVersion) -> bool:
if not isinstance(other, _BaseVersion):
return NotImplemented
return self._key <= other._key
def __eq__(self, other: object) -> bool:
if not isinstance(other, _BaseVersion):
return NotImplemented
return self._key == other._key
def __ge__(self, other: _BaseVersion) -> bool:
if not isinstance(other, _BaseVersion):
return NotImplemented
return self._key >= other._key
def __gt__(self, other: _BaseVersion) -> bool:
if not isinstance(other, _BaseVersion):
return NotImplemented
return self._key > other._key
def __ne__(self, other: object) -> bool:
if not isinstance(other, _BaseVersion):
return NotImplemented
return self._key != other._key
# Deliberately not anchored to the start and end of the string, to make it
# easier for 3rd party code to reuse
# Note that ++ doesn't behave identically on CPython and PyPy, so not using it here
_VERSION_PATTERN = r"""
v?+ # optional leading v
(?:
(?:(?P<epoch>[0-9]+)!)?+ # epoch
(?P<release>[0-9]+(?:\.[0-9]+)*+) # release segment
(?P<pre> # pre-release
[._-]?+
(?P<pre_l>alpha|a|beta|b|preview|pre|c|rc)
[._-]?+
(?P<pre_n>[0-9]+)?
)?+
(?P<post> # post release
(?:-(?P<post_n1>[0-9]+))
|
(?:
[._-]?
(?P<post_l>post|rev|r)
[._-]?
(?P<post_n2>[0-9]+)?
)
)?+
(?P<dev> # dev release
[._-]?+
(?P<dev_l>dev)
[._-]?+
(?P<dev_n>[0-9]+)?
)?+
)
(?:\+
(?P<local> # local version
[a-z0-9]+
(?:[._-][a-z0-9]+)*+
)
)?+
"""
_VERSION_PATTERN_OLD = _VERSION_PATTERN.replace("*+", "*").replace("?+", "?")
# Possessive qualifiers were added in Python 3.11.
# CPython 3.11.0-3.11.4 had a bug: https://github.com/python/cpython/pull/107795
# Older PyPy also had a bug.
VERSION_PATTERN = (
_VERSION_PATTERN_OLD
if (sys.implementation.name == "cpython" and sys.version_info < (3, 11, 5))
or (sys.implementation.name == "pypy" and sys.version_info < (3, 11, 13))
or sys.version_info < (3, 11)
else _VERSION_PATTERN
)
"""
A string containing the regular expression used to match a valid version.
The pattern is not anchored at either end, and is intended for embedding in larger
expressions (for example, matching a version number as part of a file name). The
regular expression should be compiled with the ``re.VERBOSE`` and ``re.IGNORECASE``
flags set.
:meta hide-value:
"""
# Validation pattern for local version in replace()
_LOCAL_PATTERN = re.compile(r"[a-z0-9]+(?:[._-][a-z0-9]+)*", re.IGNORECASE)
def _validate_epoch(value: object, /) -> int:
epoch = value or 0
if isinstance(epoch, int) and epoch >= 0:
return epoch
msg = f"epoch must be non-negative integer, got {epoch}"
raise InvalidVersion(msg)
def _validate_release(value: object, /) -> tuple[int, ...]:
release = (0,) if value is None else value
if (
isinstance(release, tuple)
and len(release) > 0
and all(isinstance(i, int) and i >= 0 for i in release)
):
return release
msg = f"release must be a non-empty tuple of non-negative integers, got {release}"
raise InvalidVersion(msg)
def _validate_pre(value: object, /) -> tuple[Literal["a", "b", "rc"], int] | None:
if value is None:
return value
if (
isinstance(value, tuple)
and len(value) == 2
and value[0] in ("a", "b", "rc")
and isinstance(value[1], int)
and value[1] >= 0
):
return value
msg = f"pre must be a tuple of ('a'|'b'|'rc', non-negative int), got {value}"
raise InvalidVersion(msg)
def _validate_post(value: object, /) -> tuple[Literal["post"], int] | None:
if value is None:
return value
if isinstance(value, int) and value >= 0:
return ("post", value)
msg = f"post must be non-negative integer, got {value}"
raise InvalidVersion(msg)
def _validate_dev(value: object, /) -> tuple[Literal["dev"], int] | None:
if value is None:
return value
if isinstance(value, int) and value >= 0:
return ("dev", value)
msg = f"dev must be non-negative integer, got {value}"
raise InvalidVersion(msg)
def _validate_local(value: object, /) -> LocalType | None:
if value is None:
return value
if isinstance(value, str) and _LOCAL_PATTERN.fullmatch(value):
return _parse_local_version(value)
msg = f"local must be a valid version string, got {value!r}"
raise InvalidVersion(msg)
# Backward compatibility for internals before 26.0. Do not use.
class _Version(NamedTuple):
epoch: int
release: tuple[int, ...]
dev: tuple[str, int] | None
pre: tuple[str, int] | None
post: tuple[str, int] | None
local: LocalType | None
class Version(_BaseVersion):
"""This class abstracts handling of a project's versions.
A :class:`Version` instance is comparison aware and can be compared and
sorted using the standard Python interfaces.
>>> v1 = Version("1.0a5")
>>> v2 = Version("1.0")
>>> v1
<Version('1.0a5')>
>>> v2
<Version('1.0')>
>>> v1 < v2
True
>>> v1 == v2
False
>>> v1 > v2
False
>>> v1 >= v2
False
>>> v1 <= v2
True
"""
__slots__ = ("_dev", "_epoch", "_key_cache", "_local", "_post", "_pre", "_release")
__match_args__ = ("_str",)
_regex = re.compile(r"\s*" + VERSION_PATTERN + r"\s*", re.VERBOSE | re.IGNORECASE)
_epoch: int
_release: tuple[int, ...]
_dev: tuple[str, int] | None
_pre: tuple[str, int] | None
_post: tuple[str, int] | None
_local: LocalType | None
_key_cache: CmpKey | None
def __init__(self, version: str) -> None:
"""Initialize a Version object.
:param version:
The string representation of a version which will be parsed and normalized
before use.
:raises InvalidVersion:
If the ``version`` does not conform to PEP 440 in any way then this
exception will be raised.
"""
# Validate the version and parse it into pieces
match = self._regex.fullmatch(version)
if not match:
raise InvalidVersion(f"Invalid version: {version!r}")
self._epoch = int(match.group("epoch")) if match.group("epoch") else 0
self._release = tuple(map(int, match.group("release").split(".")))
self._pre = _parse_letter_version(match.group("pre_l"), match.group("pre_n"))
self._post = _parse_letter_version(
match.group("post_l"), match.group("post_n1") or match.group("post_n2")
)
self._dev = _parse_letter_version(match.group("dev_l"), match.group("dev_n"))
self._local = _parse_local_version(match.group("local"))
# Key which will be used for sorting
self._key_cache = None
def __replace__(self, **kwargs: Unpack[_VersionReplace]) -> Self:
epoch = _validate_epoch(kwargs["epoch"]) if "epoch" in kwargs else self._epoch
release = (
_validate_release(kwargs["release"])
if "release" in kwargs
else self._release
)
pre = _validate_pre(kwargs["pre"]) if "pre" in kwargs else self._pre
post = _validate_post(kwargs["post"]) if "post" in kwargs else self._post
dev = _validate_dev(kwargs["dev"]) if "dev" in kwargs else self._dev
local = _validate_local(kwargs["local"]) if "local" in kwargs else self._local
if (
epoch == self._epoch
and release == self._release
and pre == self._pre
and post == self._post
and dev == self._dev
and local == self._local
):
return self
new_version = self.__class__.__new__(self.__class__)
new_version._key_cache = None
new_version._epoch = epoch
new_version._release = release
new_version._pre = pre
new_version._post = post
new_version._dev = dev
new_version._local = local
return new_version
@property
def _key(self) -> CmpKey:
if self._key_cache is None:
self._key_cache = _cmpkey(
self._epoch,
self._release,
self._pre,
self._post,
self._dev,
self._local,
)
return self._key_cache
@property
@_deprecated("Version._version is private and will be removed soon")
def _version(self) -> _Version:
return _Version(
self._epoch, self._release, self._dev, self._pre, self._post, self._local
)
@_version.setter
@_deprecated("Version._version is private and will be removed soon")
def _version(self, value: _Version) -> None:
self._epoch = value.epoch
self._release = value.release
self._dev = value.dev
self._pre = value.pre
self._post = value.post
self._local = value.local
self._key_cache = None
def __repr__(self) -> str:
"""A representation of the Version that shows all internal state.
>>> Version('1.0.0')
<Version('1.0.0')>
"""
return f"<Version('{self}')>"
def __str__(self) -> str:
"""A string representation of the version that can be round-tripped.
>>> str(Version("1.0a5"))
'1.0a5'
"""
# This is a hot function, so not calling self.base_version
version = ".".join(map(str, self.release))
# Epoch
if self.epoch:
version = f"{self.epoch}!{version}"
# Pre-release
if self.pre is not None:
version += "".join(map(str, self.pre))
# Post-release
if self.post is not None:
version += f".post{self.post}"
# Development release
if self.dev is not None:
version += f".dev{self.dev}"
# Local version segment
if self.local is not None:
version += f"+{self.local}"
return version
@property
def _str(self) -> str:
"""Internal property for match_args"""
return str(self)
@property
def epoch(self) -> int:
"""The epoch of the version.
>>> Version("2.0.0").epoch
0
>>> Version("1!2.0.0").epoch
1
"""
return self._epoch
@property
def release(self) -> tuple[int, ...]:
"""The components of the "release" segment of the version.
>>> Version("1.2.3").release
(1, 2, 3)
>>> Version("2.0.0").release
(2, 0, 0)
>>> Version("1!2.0.0.post0").release
(2, 0, 0)
Includes trailing zeroes but not the epoch or any pre-release / development /
post-release suffixes.
"""
return self._release
@property
def pre(self) -> tuple[str, int] | None:
"""The pre-release segment of the version.
>>> print(Version("1.2.3").pre)
None
>>> Version("1.2.3a1").pre
('a', 1)
>>> Version("1.2.3b1").pre
('b', 1)
>>> Version("1.2.3rc1").pre
('rc', 1)
"""
return self._pre
@property
def post(self) -> int | None:
"""The post-release number of the version.
>>> print(Version("1.2.3").post)
None
>>> Version("1.2.3.post1").post
1
"""
return self._post[1] if self._post else None
@property
def dev(self) -> int | None:
"""The development number of the version.
>>> print(Version("1.2.3").dev)
None
>>> Version("1.2.3.dev1").dev
1
"""
return self._dev[1] if self._dev else None
@property
def local(self) -> str | None:
"""The local version segment of the version.
>>> print(Version("1.2.3").local)
None
>>> Version("1.2.3+abc").local
'abc'
"""
if self._local:
return ".".join(str(x) for x in self._local)
else:
return None
@property
def public(self) -> str:
"""The public portion of the version.
>>> Version("1.2.3").public
'1.2.3'
>>> Version("1.2.3+abc").public
'1.2.3'
>>> Version("1!1.2.3dev1+abc").public
'1!1.2.3.dev1'
"""
return str(self).split("+", 1)[0]
@property
def base_version(self) -> str:
"""The "base version" of the version.
>>> Version("1.2.3").base_version
'1.2.3'
>>> Version("1.2.3+abc").base_version
'1.2.3'
>>> Version("1!1.2.3dev1+abc").base_version
'1!1.2.3'
The "base version" is the public version of the project without any pre or post
release markers.
"""
release_segment = ".".join(map(str, self.release))
return f"{self.epoch}!{release_segment}" if self.epoch else release_segment
@property
def is_prerelease(self) -> bool:
"""Whether this version is a pre-release.
>>> Version("1.2.3").is_prerelease
False
>>> Version("1.2.3a1").is_prerelease
True
>>> Version("1.2.3b1").is_prerelease
True
>>> Version("1.2.3rc1").is_prerelease
True
>>> Version("1.2.3dev1").is_prerelease
True
"""
return self.dev is not None or self.pre is not None
@property
def is_postrelease(self) -> bool:
"""Whether this version is a post-release.
>>> Version("1.2.3").is_postrelease
False
>>> Version("1.2.3.post1").is_postrelease
True
"""
return self.post is not None
@property
def is_devrelease(self) -> bool:
"""Whether this version is a development release.
>>> Version("1.2.3").is_devrelease
False
>>> Version("1.2.3.dev1").is_devrelease
True
"""
return self.dev is not None
@property
def major(self) -> int:
"""The first item of :attr:`release` or ``0`` if unavailable.
>>> Version("1.2.3").major
1
"""
return self.release[0] if len(self.release) >= 1 else 0
@property
def minor(self) -> int:
"""The second item of :attr:`release` or ``0`` if unavailable.
>>> Version("1.2.3").minor
2
>>> Version("1").minor
0
"""
return self.release[1] if len(self.release) >= 2 else 0
@property
def micro(self) -> int:
"""The third item of :attr:`release` or ``0`` if unavailable.
>>> Version("1.2.3").micro
3
>>> Version("1").micro
0
"""
return self.release[2] if len(self.release) >= 3 else 0
class _TrimmedRelease(Version):
__slots__ = ()
def __init__(self, version: str | Version) -> None:
if isinstance(version, Version):
self._epoch = version._epoch
self._release = version._release
self._dev = version._dev
self._pre = version._pre
self._post = version._post
self._local = version._local
self._key_cache = version._key_cache
return
super().__init__(version) # pragma: no cover
@property
def release(self) -> tuple[int, ...]:
"""
Release segment without any trailing zeros.
>>> _TrimmedRelease('1.0.0').release
(1,)
>>> _TrimmedRelease('0.0').release
(0,)
"""
# This leaves one 0.
rel = super().release
len_release = len(rel)
i = len_release
while i > 1 and rel[i - 1] == 0:
i -= 1
return rel if i == len_release else rel[:i]
def _parse_letter_version(
letter: str | None, number: str | bytes | SupportsInt | None
) -> tuple[str, int] | None:
if letter:
# We normalize any letters to their lower case form
letter = letter.lower()
# We consider some words to be alternate spellings of other words and
# in those cases we want to normalize the spellings to our preferred
# spelling.
letter = _LETTER_NORMALIZATION.get(letter, letter)
# We consider there to be an implicit 0 in a pre-release if there is
# not a numeral associated with it.
return letter, int(number or 0)
if number:
# We assume if we are given a number, but we are not given a letter
# then this is using the implicit post release syntax (e.g. 1.0-1)
return "post", int(number)
return None
_local_version_separators = re.compile(r"[\._-]")
def _parse_local_version(local: str | None) -> LocalType | None:
"""
Takes a string like abc.1.twelve and turns it into ("abc", 1, "twelve").
"""
if local is not None:
return tuple(
part.lower() if not part.isdigit() else int(part)
for part in _local_version_separators.split(local)
)
return None
def _cmpkey(
epoch: int,
release: tuple[int, ...],
pre: tuple[str, int] | None,
post: tuple[str, int] | None,
dev: tuple[str, int] | None,
local: LocalType | None,
) -> CmpKey:
# When we compare a release version, we want to compare it with all of the
# trailing zeros removed. We will use this for our sorting key.
len_release = len(release)
i = len_release
while i and release[i - 1] == 0:
i -= 1
_release = release if i == len_release else release[:i]
# We need to "trick" the sorting algorithm to put 1.0.dev0 before 1.0a0.
# We'll do this by abusing the pre segment, but we _only_ want to do this
# if there is not a pre or a post segment. If we have one of those then
# the normal sorting rules will handle this case correctly.
if pre is None and post is None and dev is not None:
_pre: CmpPrePostDevType = NegativeInfinity
# Versions without a pre-release (except as noted above) should sort after
# those with one.
elif pre is None:
_pre = Infinity
else:
_pre = pre
# Versions without a post segment should sort before those with one.
if post is None:
_post: CmpPrePostDevType = NegativeInfinity
else:
_post = post
# Versions without a development segment should sort after those with one.
if dev is None:
_dev: CmpPrePostDevType = Infinity
else:
_dev = dev
if local is None:
# Versions without a local segment should sort before those with one.
_local: CmpLocalType = NegativeInfinity
else:
# Versions with a local segment need that segment parsed to implement
# the sorting rules in PEP440.
# - Alpha numeric segments sort before numeric segments
# - Alpha numeric segments sort lexicographically
# - Numeric segments sort numerically
# - Shorter versions sort before longer versions when the prefixes
# match exactly
_local = tuple(
(i, "") if isinstance(i, int) else (NegativeInfinity, i) for i in local
)
return epoch, _release, _pre, _post, _dev, _local