def _can_add(self, dist):
# type: (Distribution) -> Optional[_RankedDistribution]
filename, ext = os.path.splitext(os.path.basename(dist.location))
if ext.lower() != ".whl":
# This supports resolving pex's own vendored distributions which are vendored in directory
# directory with the project name (`pip/` for pip) and not the corresponding wheel name
# (`pip-19.3.1-py2.py3-none-any.whl/` for pip). Pex only vendors universal wheels for all
# platforms it supports at buildtime and runtime so this is always safe.
return _RankedDistribution.maximum(dist)
# Wheel filename format: https://www.python.org/dev/peps/pep-0427/#file-name-convention
# `{distribution}-{version}(-{build tag})?-{python tag}-{abi tag}-{platform tag}.whl`
wheel_components = filename.split("-")
if len(wheel_components) < 3:
return None
# `{python tag}-{abi tag}-{platform tag}`
wheel_tags = tags.parse_tag("-".join(wheel_components[-3:]))
# There will be multiple parsed tags for compressed tag sets. Ensure we grab the parsed tag
# with highest rank from that expanded set.
rank = max(
self._supported_tags_to_rank.get(tag, -1) for tag in wheel_tags)
if rank == -1:
return None
if self._interpreter_version:
python_requires = dist_metadata.requires_python(dist)
if python_requires and self._interpreter_version not in python_requires:
return None
return _RankedDistribution(rank, dist)
def can_add(self, dist):
filename, ext = os.path.splitext(os.path.basename(dist.location))
if ext.lower() != ".whl":
# This supports resolving pex's own vendored distributions which are vendored in directory
# directory with the project name (`pip/` for pip) and not the corresponding wheel name
# (`pip-19.3.1-py2.py3-none-any.whl/` for pip). Pex only vendors universal wheels for all
# platforms it supports at buildtime and runtime so this is always safe.
return True
# Wheel filename format: https://www.python.org/dev/peps/pep-0427/#file-name-convention
# `{distribution}-{version}(-{build tag})?-{python tag}-{abi tag}-{platform tag}.whl`
wheel_components = filename.split("-")
if len(wheel_components) < 3:
return False
wheel_tags = "-".join(
wheel_components[-3:]) # `{python tag}-{abi tag}-{platform tag}`
if self._supported_tags.isdisjoint(tags.parse_tag(wheel_tags)):
return False
python_requires = dist_metadata.requires_python(dist)
if not python_requires:
return True
return self._interpreter.identity.version_str in python_requires
def test_platform_supported_tags():
platform = Platform.create("macosx-10.13-x86_64-cp-36-m")
# A golden file test. This could break if we upgrade Pip and it upgrades packaging which, from
# time to time, corrects omissions in tag sets.
assert (tuple(
itertools.chain.from_iterable(
tags.parse_tag(tag) for tag in pkgutil.get_data(
__name__, "data/platforms/macosx_10_13_x86_64-cp-36-m.tags.txt"
).decode("utf-8").splitlines()
if not tag.startswith("#"))) == platform.supported_tags())
def can_add(self, dist):
filename, ext = os.path.splitext(os.path.basename(dist.location))
if ext.lower() != '.whl':
# This supports resolving pex's own vendored distributions which are vendored in directory
# directory with the project name (`pip/` for pip) and not the corresponding wheel name
# (`pip-19.3.1-py2.py3-none-any.whl/` for pip). Pex only vendors universal wheels for all
# platforms it supports at buildtime and runtime so this is always safe.
return True
try:
wheel_name_, wheel_raw_version_, wheel_tags = filename.split(
'-', 2)
except ValueError:
return False
return not self._supported_tags.isdisjoint(tags.parse_tag(wheel_tags))
def parse_tags(output):
# type: (bytes) -> Iterator[tags.Tag]
count = None # type: Optional[int]
try:
for line in output.decode("utf-8").splitlines():
if count is None:
match = re.match(r"^Compatible tags: (?P<count>\d+)\s+", line)
if match:
count = int(match.group("count"))
continue
count -= 1
if count < 0:
raise AssertionError("Expected {} tags but got more.".format(count))
for tag in tags.parse_tag(line.strip()):
yield tag
finally:
if count != 0:
raise AssertionError("Finished with count {}.".format(count))
