FM / utils

/usr/lib/python2.6/site-packages/pip-8.1.1-py2.6.egg/pip/utils/

/usr/lib/python2.6/site-packages/pip-8.1.1-py2.6.egg/pip/utils

Name	Size	Mode	Actions
appdirs.py	7896	0644	edit dl rm
appdirs.pyc	7905	0644	edit dl rm
build.py	1312	0644	edit dl rm
build.pyc	1868	0644	edit dl rm
deprecation.py	2239	0644	edit dl rm
deprecation.pyc	2488	0644	edit dl rm
encoding.py	971	0644	edit dl rm
encoding.pyc	1331	0644	edit dl rm
filesystem.py	899	0644	edit dl rm
filesystem.pyc	832	0644	edit dl rm
hashes.py	2866	0644	edit dl rm
hashes.pyc	4271	0644	edit dl rm
logging.py	3327	0644	edit dl rm
logging.pyc	5203	0644	edit dl rm
outdated.py	5455	0644	edit dl rm
outdated.pyc	5487	0644	edit dl rm
setuptools_build.py	240	0644	edit dl rm
setuptools_build.pyc	343	0644	edit dl rm
ui.py	11597	0644	edit dl rm
ui.pyc	12495	0644	edit dl rm
__init__.py	27531	0644	edit dl rm
__init__.pyc	29695	0644	edit dl rm

Edit: /usr/lib/python2.6/site-packages/pip-8.1.1-py2.6.egg/pip/utils/hashes.py (2866B)

from __future__ import absolute_import

import hashlib

from pip.exceptions import HashMismatch, HashMissing, InstallationError
from pip.utils import read_chunks
from pip._vendor.six import iteritems, iterkeys, itervalues

# The recommended hash algo of the moment. Change this whenever the state of
# the art changes; it won't hurt backward compatibility.
FAVORITE_HASH = 'sha256'

# Names of hashlib algorithms allowed by the --hash option and ``pip hash``
# Currently, those are the ones at least as collision-resistant as sha256.
STRONG_HASHES = ['sha256', 'sha384', 'sha512']

class Hashes(object):
    """A wrapper that builds multiple hashes at once and checks them against
    known-good values

"""
    def __init__(self, hashes=None):
        """
        :param hashes: A dict of algorithm names pointing to lists of allowed
            hex digests
        """
        self._allowed = {} if hashes is None else hashes

def check_against_chunks(self, chunks):
        """Check good hashes against ones built from iterable of chunks of
        data.

Raise HashMismatch if none match.

"""
        gots = {}
        for hash_name in iterkeys(self._allowed):
            try:
                gots[hash_name] = hashlib.new(hash_name)
            except (ValueError, TypeError):
                raise InstallationError('Unknown hash name: %s' % hash_name)

for chunk in chunks:
            for hash in itervalues(gots):
                hash.update(chunk)

for hash_name, got in iteritems(gots):
            if got.hexdigest() in self._allowed[hash_name]:
                return
        self._raise(gots)

def _raise(self, gots):
        raise HashMismatch(self._allowed, gots)

def check_against_file(self, file):
        """Check good hashes against a file-like object

Raise HashMismatch if none match.

"""
        return self.check_against_chunks(read_chunks(file))

def check_against_path(self, path):
        with open(path, 'rb') as file:
            return self.check_against_file(file)

def __nonzero__(self):
        """Return whether I know any known-good hashes."""
        return bool(self._allowed)

def __bool__(self):
        return self.__nonzero__()

class MissingHashes(Hashes):
    """A workalike for Hashes used when we're missing a hash for a requirement

It computes the actual hash of the requirement and raises a HashMissing
    exception showing it to the user.

"""
    def __init__(self):
        """Don't offer the ``hashes`` kwarg."""
        # Pass our favorite hash in to generate a "gotten hash". With the
        # empty list, it will never match, so an error will always raise.
        super(MissingHashes, self).__init__(hashes={FAVORITE_HASH: []})

def _raise(self, gots):
        raise HashMissing(gots[FAVORITE_HASH].hexdigest())

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