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import glob
import os
import sys
import warnings
from pkginfo.distribution import Distribution
from pkginfo._compat import STRING_TYPES
class Installed(Distribution):
def __init__(self, package, metadata_version=None):
if isinstance(package, STRING_TYPES):
self.package_name = package
try:
__import__(package)
except ImportError:
package = None
else:
package = sys.modules[package]
else:
self.package_name = package.__name__
self.package = package
self.metadata_version = metadata_version
self.extractMetadata()
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__
pattern = '%s*.egg-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, 'EGG-INFO')) # egg?
_add_candidate(opj(entry, pattern)) # dist-installed?
dir, name = os.path.split(self.package.__file__)
_add_candidate(opj(dir, pattern))
_add_candidate(opj(dir, '..', pattern))
for candidate in candidates:
if os.path.isdir(candidate):
path = opj(candidate, 'PKG-INFO')
else:
path = candidate
if os.path.exists(path):
with open(path) as f:
return f.read()
warnings.warn('No PKG-INFO found for package: %s' % self.package_name)