forked from s434650/CatOrNot
58 lines
1.6 KiB
Python
58 lines
1.6 KiB
Python
|
from __future__ import absolute_import
|
||
|
|
|
||
|
|
import hashlib
|
||
|
|
import logging
|
||
|
|
import sys
|
||
|
|
|
||
|
|
from pip.basecommand import Command
|
||
|
|
from pip.status_codes import ERROR
|
||
|
|
from pip.utils import read_chunks
|
||
|
|
from pip.utils.hashes import FAVORITE_HASH, STRONG_HASHES
|
||
|
|
|
||
|
|
|
||
|
|
logger = logging.getLogger(__name__)
|
||
|
|
|
||
|
|
|
||
|
|
class HashCommand(Command):
|
||
|
|
"""
|
||
|
|
Compute a hash of a local package archive.
|
||
|
|
|
||
|
|
These can be used with --hash in a requirements file to do repeatable
|
||
|
|
installs.
|
||
|
|
|
||
|
|
"""
|
||
|
|
name = 'hash'
|
||
|
|
usage = '%prog [options] <file> ...'
|
||
|
|
summary = 'Compute hashes of package archives.'
|
||
|
|
|
||
|
|
def __init__(self, *args, **kw):
|
||
|
|
super(HashCommand, self).__init__(*args, **kw)
|
||
|
|
self.cmd_opts.add_option(
|
||
|
|
'-a', '--algorithm',
|
||
|
|
dest='algorithm',
|
||
|
|
choices=STRONG_HASHES,
|
||
|
|
action='store',
|
||
|
|
default=FAVORITE_HASH,
|
||
|
|
help='The hash algorithm to use: one of %s' %
|
||
|
|
', '.join(STRONG_HASHES))
|
||
|
|
self.parser.insert_option_group(0, self.cmd_opts)
|
||
|
|
|
||
|
|
def run(self, options, args):
|
||
|
|
if not args:
|
||
|
|
self.parser.print_usage(sys.stderr)
|
||
|
|
return ERROR
|
||
|
|
|
||
|
|
algorithm = options.algorithm
|
||
|
|
for path in args:
|
||
|
|
logger.info('%s:\n--hash=%s:%s',
|
||
|
|
path, algorithm, _hash_of_file(path, algorithm))
|
||
|
|
|
||
|
|
|
||
|
|
def _hash_of_file(path, algorithm):
|
||
|
|
"""Return the hash digest of a file."""
|
||
|
|
with open(path, 'rb') as archive:
|
||
|
|
hash = hashlib.new(algorithm)
|
||
|
|
for chunk in read_chunks(archive):
|
||
|
|
hash.update(chunk)
|
||
|
|
return hash.hexdigest()
|