|
|
# ext-sidedata.py - small extension to test the sidedata logic
|
|
|
#
|
|
|
# Copyright 2019 Pierre-Yves David <pierre-yves.david@octobus.net)
|
|
|
#
|
|
|
# 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 hashlib
|
|
|
import struct
|
|
|
|
|
|
from mercurial import (
|
|
|
extensions,
|
|
|
node,
|
|
|
revlog,
|
|
|
)
|
|
|
|
|
|
from mercurial.revlogutils import (
|
|
|
sidedata,
|
|
|
)
|
|
|
|
|
|
def wrapaddrevision(orig, self, text, transaction, link, p1, p2, *args,
|
|
|
**kwargs):
|
|
|
if kwargs.get('sidedata') is None:
|
|
|
kwargs['sidedata'] = {}
|
|
|
sd = kwargs['sidedata']
|
|
|
## let's store some arbitrary data just for testing
|
|
|
# text length
|
|
|
sd[sidedata.SD_TEST1] = struct.pack('>I', len(text))
|
|
|
# and sha2 hashes
|
|
|
sha256 = hashlib.sha256(text).digest()
|
|
|
sd[sidedata.SD_TEST2] = struct.pack('>32s', sha256)
|
|
|
return orig(self, text, transaction, link, p1, p2, *args, **kwargs)
|
|
|
|
|
|
def wraprevision(orig, self, nodeorrev, *args, **kwargs):
|
|
|
text = orig(self, nodeorrev, *args, **kwargs)
|
|
|
if nodeorrev != node.nullrev and nodeorrev != node.nullid:
|
|
|
sd = self.sidedata(nodeorrev)
|
|
|
if len(text) != struct.unpack('>I', sd[sidedata.SD_TEST1])[0]:
|
|
|
raise RuntimeError('text size mismatch')
|
|
|
expected = sd[sidedata.SD_TEST2]
|
|
|
got = hashlib.sha256(text).digest()
|
|
|
if got != expected:
|
|
|
raise RuntimeError('sha256 mismatch')
|
|
|
return text
|
|
|
|
|
|
def extsetup(ui):
|
|
|
extensions.wrapfunction(revlog.revlog, 'addrevision', wrapaddrevision)
|
|
|
extensions.wrapfunction(revlog.revlog, 'revision', wraprevision)
|
|
|
|