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comparison mercurial/revlogutils/sidedata.py @ 43035:ea83abf95630

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sidedata: add a function to write sidedata into a raw text Differential Revision: https://phab.mercurial-scm.org/D6891
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Wed, 04 Sep 2019 01:20:54 +0200
parents 294afb982a88
children e8bc4c3d9a0b
comparison
equal deleted inserted replaced
43034:294afb982a88 43035:ea83abf95630
39 from .. import error 39 from .. import error
40 40
41 SIDEDATA_HEADER = struct.Struct('>H') 41 SIDEDATA_HEADER = struct.Struct('>H')
42 SIDEDATA_ENTRY = struct.Struct('>HL20s') 42 SIDEDATA_ENTRY = struct.Struct('>HL20s')
43 43
44 def sidedatawriteprocessor(rl, text, sidedata):
45 sidedata = list(sidedata.items())
46 sidedata.sort()
47 rawtext = [SIDEDATA_HEADER.pack(len(sidedata))]
48 for key, value in sidedata:
49 digest = hashlib.sha1(value).digest()
50 rawtext.append(SIDEDATA_ENTRY.pack(key, len(value), digest))
51 for key, value in sidedata:
52 rawtext.append(value)
53 rawtext.append(bytes(text))
54 return ''.join(rawtext), False
55
44 def sidedatareadprocessor(rl, text): 56 def sidedatareadprocessor(rl, text):
45 sidedata = {} 57 sidedata = {}
46 offset = 0 58 offset = 0
47 nbentry, = SIDEDATA_HEADER.unpack(text[:SIDEDATA_HEADER.size]) 59 nbentry, = SIDEDATA_HEADER.unpack(text[:SIDEDATA_HEADER.size])
48 offset += SIDEDATA_HEADER.size 60 offset += SIDEDATA_HEADER.size