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# Copyright 2013 Tres Seaver
# Copyright 2015 Ian Cordasco
# This code was originally licensed under the Python Software Foudation
# License by Tres Seaver. In order to facilitate finding the metadata of
# installed packages, part of the most current implementation of the
# pkginfo.Installed class is reproduced here with bug fixes from
# https://bugs.launchpad.net/pkginfo/+bug/1437570.
import glob
import os
import sys
import warnings
import pkginfo
class Installed(pkginfo.Installed):
def read(self):
opj = os.path.join
if self.package is not None:
package = self.package.__package__
if package is None:
package = self.package.__name__
egg_pattern = '%s*.egg-info' % package
dist_pattern = '%s*.dist-info' % package
file = getattr(self.package, '__file__', None)
if file is not None:
candidates = []
def _add_candidate(where):
candidates.extend(glob.glob(where))
for entry in sys.path:
if file.startswith(entry):
_add_candidate(opj(entry, 'METADATA')) # egg?
_add_candidate(opj(entry, 'EGG-INFO')) # egg?
# dist-installed?
_add_candidate(opj(entry, egg_pattern))
_add_candidate(opj(entry, dist_pattern))
dir, name = os.path.split(self.package.__file__)
_add_candidate(opj(dir, egg_pattern))
_add_candidate(opj(dir, dist_pattern))
_add_candidate(opj(dir, '..', egg_pattern))
_add_candidate(opj(dir, '..', dist_pattern))
for candidate in candidates:
if os.path.isdir(candidate):
path = opj(candidate, 'PKG-INFO')
if not os.path.exists(path):
path = opj(candidate, 'METADATA')
else:
path = candidate
if os.path.exists(path):
with open(path) as f:
return f.read()
warnings.warn('No PKG-INFO or METADATA found for package: %s' %
self.package_name)