Mercurial > hg
view hgext/lfs/pointer.py @ 40589:054d0fcba2c4
commandserver: add experimental option to use separate message channel
This is loosely based on the idea of the TortoiseHg's pipeui extension,
which attaches ui.label to message text so the command-server client can
capture prompt text, for example.
https://bitbucket.org/tortoisehg/thg/src/4.7.2/tortoisehg/util/pipeui.py
I was thinking that this functionality could be generalized to templating,
but changed mind as doing template stuff would be unnecessarily complex.
It's merely a status message, a simple serialization option should suffice.
Since this slightly changes the command-server protocol, it's gated by a
config knob. If the config is enabled, and if it's supported by the server,
"message-encoding: <name>" is advertised so the client can stop parsing
'o'/'e' channel data and read encoded messages from the 'm' channel. As we
might add new message encodings in future releases, client can specify a list
of encoding names in preferred order.
This patch includes 'cbor' encoding as example. Perhaps, 'json' should be
supported as well.
author | Yuya Nishihara <yuya@tcha.org> |
---|---|
date | Sun, 18 Jan 2015 18:49:59 +0900 |
parents | b63dee7bd0d9 |
children | 2372284d9457 |
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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 = 'https://git-lfs.github.com/spec/v1' def __init__(self, *args, **kwargs): self['version'] = self.VERSION super(gitlfspointer, self).__init__(*args) self.update(pycompat.byteskwargs(kwargs)) @classmethod def deserialize(cls, text): try: return cls(l.split(' ', 1) for l in text.splitlines()).validate() except ValueError: # l.split returns 1 item instead of 2 raise InvalidPointer(_('cannot parse git-lfs text: %s') % stringutil.pprint(text)) def serialize(self): sortkeyfunc = lambda x: (x[0] != 'version', x) items = sorted(self.validate().iteritems(), key=sortkeyfunc) return ''.join('%s %s\n' % (k, v) for k, v in items) def oid(self): return self['oid'].split(':')[-1] def size(self): return int(self['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 = { 'size': re.compile(br'\A[0-9]+\Z'), 'oid': re.compile(br'\Asha256:[0-9a-f]{64}\Z'), '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 self.iteritems(): if k in self._requiredre: if not self._requiredre[k].match(v): raise InvalidPointer( _('unexpected lfs pointer value: %s=%s') % (k, stringutil.pprint(v))) requiredcount += 1 elif not self._keyre.match(k): raise InvalidPointer(_('unexpected lfs pointer key: %s') % k) if not self._valuere.match(v): raise InvalidPointer(_('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(_('missing lfs pointer keys: %s') % ', '.join(miss)) return self deserialize = gitlfspointer.deserialize