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import os
import zipfile
from pkginfo.distribution import Distribution
class BDist(Distribution):
def __init__(self, filename, metadata_version=None):
self.filename = filename
self.metadata_version = metadata_version
self.extractMetadata()
def read(self):
fqn = os.path.abspath(
os.path.normpath(self.filename))
if not os.path.exists(fqn):
raise ValueError('No such file: %s' % fqn)
if fqn.endswith('.egg'):
archive = zipfile.ZipFile(fqn)
names = archive.namelist()
def read_file(name):
return archive.read(name)
else:
raise ValueError('Not a known archive format: %s' % 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)