Mercurial > repos > guerler > hhblits
comparison lib/python3.8/site-packages/pip/_internal/commands/hash.py @ 0:9e54283cc701 draft
"planemo upload commit d12c32a45bcd441307e632fca6d9af7d60289d44"
| author | guerler |
|---|---|
| date | Mon, 27 Jul 2020 03:47:31 -0400 |
| parents | |
| children |
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| -1:000000000000 | 0:9e54283cc701 |
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| 1 # The following comment should be removed at some point in the future. | |
| 2 # mypy: disallow-untyped-defs=False | |
| 3 | |
| 4 from __future__ import absolute_import | |
| 5 | |
| 6 import hashlib | |
| 7 import logging | |
| 8 import sys | |
| 9 | |
| 10 from pip._internal.cli.base_command import Command | |
| 11 from pip._internal.cli.status_codes import ERROR | |
| 12 from pip._internal.utils.hashes import FAVORITE_HASH, STRONG_HASHES | |
| 13 from pip._internal.utils.misc import read_chunks, write_output | |
| 14 | |
| 15 logger = logging.getLogger(__name__) | |
| 16 | |
| 17 | |
| 18 class HashCommand(Command): | |
| 19 """ | |
| 20 Compute a hash of a local package archive. | |
| 21 | |
| 22 These can be used with --hash in a requirements file to do repeatable | |
| 23 installs. | |
| 24 """ | |
| 25 | |
| 26 usage = '%prog [options] <file> ...' | |
| 27 ignore_require_venv = True | |
| 28 | |
| 29 def __init__(self, *args, **kw): | |
| 30 super(HashCommand, self).__init__(*args, **kw) | |
| 31 self.cmd_opts.add_option( | |
| 32 '-a', '--algorithm', | |
| 33 dest='algorithm', | |
| 34 choices=STRONG_HASHES, | |
| 35 action='store', | |
| 36 default=FAVORITE_HASH, | |
| 37 help='The hash algorithm to use: one of %s' % | |
| 38 ', '.join(STRONG_HASHES)) | |
| 39 self.parser.insert_option_group(0, self.cmd_opts) | |
| 40 | |
| 41 def run(self, options, args): | |
| 42 if not args: | |
| 43 self.parser.print_usage(sys.stderr) | |
| 44 return ERROR | |
| 45 | |
| 46 algorithm = options.algorithm | |
| 47 for path in args: | |
| 48 write_output('%s:\n--hash=%s:%s', | |
| 49 path, algorithm, _hash_of_file(path, algorithm)) | |
| 50 | |
| 51 | |
| 52 def _hash_of_file(path, algorithm): | |
| 53 """Return the hash digest of a file.""" | |
| 54 with open(path, 'rb') as archive: | |
| 55 hash = hashlib.new(algorithm) | |
| 56 for chunk in read_chunks(archive): | |
| 57 hash.update(chunk) | |
| 58 return hash.hexdigest() |