def distros_for_location(location, basename, metadata=None):
"""Yield egg or source distribution objects based on basename"""
if basename.endswith('.egg.zip'):
basename = basename[:-4] # strip the .zip
if basename.endswith('.egg') and '-' in basename:
# only one, unambiguous interpretation
return [Distribution.from_location(location, basename, metadata)]
if basename.endswith('.whl') and '-' in basename:
wheel = Wheel(basename)
if not wheel.is_compatible():
return []
return [
Distribution(
location=location,
project_name=wheel.project_name,
version=wheel.version,
# Increase priority over eggs.
precedence=EGG_DIST + 1,
)
]
if basename.endswith('.exe'):
win_base, py_ver, platform = parse_bdist_wininst(basename)
if win_base is not None:
return interpret_distro_name(location, win_base, metadata, py_ver,
BINARY_DIST, platform)
# Try source distro extensions (.zip, .tgz, etc.)
#
for ext in EXTENSIONS:
if basename.endswith(ext):
basename = basename[:-len(ext)]
return interpret_distro_name(location, basename, metadata)
return [] # no extension matched
def _convert_metadata(zf, destination_eggdir, dist_info, egg_info):
def get_metadata(name):
with zf.open(posixpath.join(dist_info, name)) as fp:
value = fp.read().decode('utf-8') if PY3 else fp.read()
return email.parser.Parser().parsestr(value)
wheel_metadata = get_metadata('WHEEL')
# Check wheel format version is supported.
wheel_version = parse_version(wheel_metadata.get('Wheel-Version'))
wheel_v1 = (
parse_version('1.0') <= wheel_version < parse_version('2.0dev0')
)
if not wheel_v1:
raise ValueError(
'unsupported wheel format version: %s' % wheel_version)
# Extract to target directory.
os.mkdir(destination_eggdir)
zf.extractall(destination_eggdir)
# Convert metadata.
dist_info = os.path.join(destination_eggdir, dist_info)
dist = Distribution.from_location(
destination_eggdir, dist_info,
metadata=PathMetadata(destination_eggdir, dist_info),
)
# Note: Evaluate and strip markers now,
# as it's difficult to convert back from the syntax:
# foobar; "linux" in sys_platform and extra == 'test'
def raw_req(req):
req.marker = None
return str(req)
install_requires = list(sorted(map(raw_req, dist.requires())))
extras_require = {
extra: sorted(
req
for req in map(raw_req, dist.requires((extra,)))
if req not in install_requires
)
for extra in dist.extras
}
os.rename(dist_info, egg_info)
os.rename(
os.path.join(egg_info, 'METADATA'),
os.path.join(egg_info, 'PKG-INFO'),
)
setup_dist = SetuptoolsDistribution(
attrs=dict(
install_requires=install_requires,
extras_require=extras_require,
),
)
write_requirements(
setup_dist.get_command_obj('egg_info'),
None,
os.path.join(egg_info, 'requires.txt'),
)