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import os
import tarfile
import zipfile
from pkginfo.distribution import Distribution
class SDist(Distribution):
def __init__(self, filename, metadata_version=None):
self.filename = filename
self.metadata_version = metadata_version
self.extractMetadata()
@classmethod
def _get_archive(cls, fqn):
if not os.path.exists(fqn):
raise ValueError('No such file: %s' % fqn)
if fqn.endswith('.zip'):
archive = zipfile.ZipFile(fqn)
names = archive.namelist()
def read_file(name):
return archive.read(name)
elif fqn.endswith('gz') or fqn.endswith('bz2'):
archive = tarfile.TarFile.open(fqn)
names = archive.getnames()
def read_file(name):
return archive.extractfile(name).read()
else:
raise ValueError('Not a known archive format: %s' % fqn)
return archive, names, read_file
def read(self):
fqn = os.path.abspath(
os.path.normpath(self.filename))
archive, names, read_file = self._get_archive(fqn)
try:
tuples = [x.split('/') for x in names if 'PKG-INFO' in x]
schwarz = sorted([(len(x), x) for x in tuples])
for path in [x[1] for x in schwarz]:
candidate = '/'.join(path)
data = read_file(candidate)
if b'Metadata-Version' in data:
return data
finally:
archive.close()
raise ValueError('No PKG-INFO in archive: %s' % fqn)
class UnpackedSDist(SDist):
def __init__(self, filename, metadata_version=None):
if os.path.isdir(filename):
pass
elif os.path.isfile(filename):
filename = os.path.dirname(filename)
else:
raise ValueError('No such file: %s' % filename)
super(UnpackedSDist, self).__init__(
filename, metadata_version=metadata_version)
def read(self):
try:
with open(os.path.join(self.filename, 'PKG-INFO')) as f:
return f.read()
except Exception as e:
raise ValueError('Could not load %s as an unpacked sdist: %s'
% (self.filename, e))