Mercurial > hg
view hgext/lfs/pointer.py @ 45072:a56ba57c837d
scmutil: allowing different files to be prefetched per revision
The old API takes a list of revision separate from the file matcher, and thus
provides no way to fetch different sets of files from each revision. In
preparation for adding one such usage, I'm changing the API to take a list of
(revision, file matcher) tuples instead.
Differential Revision: https://phab.mercurial-scm.org/D8721
author | Rodrigo Damazio Bovendorp <rdamazio@google.com> |
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date | Thu, 09 Jul 2020 18:48:55 -0700 |
parents | 649d3ac37a12 |
children | 6000f5b25c9b |
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# pointer.py - Git-LFS pointer serialization # # Copyright 2017 Facebook, Inc. # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. from __future__ import absolute_import import re from mercurial.i18n import _ from mercurial import ( error, pycompat, ) from mercurial.utils import stringutil class InvalidPointer(error.StorageError): pass class gitlfspointer(dict): VERSION = b'https://git-lfs.github.com/spec/v1' def __init__(self, *args, **kwargs): self[b'version'] = self.VERSION super(gitlfspointer, self).__init__(*args) self.update(pycompat.byteskwargs(kwargs)) @classmethod def deserialize(cls, text): try: return cls(l.split(b' ', 1) for l in text.splitlines()).validate() except ValueError: # l.split returns 1 item instead of 2 raise InvalidPointer( _(b'cannot parse git-lfs text: %s') % stringutil.pprint(text) ) def serialize(self): sortkeyfunc = lambda x: (x[0] != b'version', x) items = sorted(pycompat.iteritems(self.validate()), key=sortkeyfunc) return b''.join(b'%s %s\n' % (k, v) for k, v in items) def oid(self): return self[b'oid'].split(b':')[-1] def size(self): return int(self[b'size']) # regular expressions used by _validate # see https://github.com/git-lfs/git-lfs/blob/master/docs/spec.md _keyre = re.compile(br'\A[a-z0-9.-]+\Z') _valuere = re.compile(br'\A[^\n]*\Z') _requiredre = { b'size': re.compile(br'\A[0-9]+\Z'), b'oid': re.compile(br'\Asha256:[0-9a-f]{64}\Z'), b'version': re.compile(br'\A%s\Z' % stringutil.reescape(VERSION)), } def validate(self): """raise InvalidPointer on error. return self if there is no error""" requiredcount = 0 for k, v in pycompat.iteritems(self): if k in self._requiredre: if not self._requiredre[k].match(v): raise InvalidPointer( _(b'unexpected lfs pointer value: %s=%s') % (k, stringutil.pprint(v)) ) requiredcount += 1 elif not self._keyre.match(k): raise InvalidPointer(_(b'unexpected lfs pointer key: %s') % k) if not self._valuere.match(v): raise InvalidPointer( _(b'unexpected lfs pointer value: %s=%s') % (k, stringutil.pprint(v)) ) if len(self._requiredre) != requiredcount: miss = sorted(set(self._requiredre.keys()).difference(self.keys())) raise InvalidPointer( _(b'missing lfs pointer keys: %s') % b', '.join(miss) ) return self deserialize = gitlfspointer.deserialize