Mercurial > hg > mercurial-crew-with-dirclash

annotate mercurial/changegroup.py @ 2161:12e11413ca19

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Fix just introduced possible old-http bug My last patch changed httprangereader.read to read only the specified amount of data from the connection, to prevent it from returning more than what was asked. I just realized that this could lead to the connection not being closed. In practice, it looks like the connection is closed just fine, but it's probably safer to read everything and then return only what's necessary.
author Alexis S. L. Carvalho <alexis@cecm.usp.br>
date Sun, 30 Apr 2006 18:50:53 +0200
parents 802e8a029d99
children fe1689273f84
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1981
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1 """
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2 changegroup.py - Mercurial changegroup manipulation functions
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4 Copyright 2006 Matt Mackall <mpm@selenic.com>
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5
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6 This software may be used and distributed according to the terms
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7 of the GNU General Public License, incorporated herein by reference.
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8 """
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9 import struct
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802e8a029d99 Added missing gettext import to changegroup.py.
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10 from i18n import gettext as _
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11 from demandload import *
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12 demandload(globals(), "util")
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13
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14 def getchunk(source):
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15 """get a chunk from a changegroup"""
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16 d = source.read(4)
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17 if not d:
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18 return ""
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19 l = struct.unpack(">l", d)[0]
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20 if l <= 4:
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21 return ""
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22 d = source.read(l - 4)
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23 if len(d) < l - 4:
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24 raise util.Abort(_("premature EOF reading chunk"
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25 " (got %d bytes, expected %d)")
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26 % (len(d), l - 4))
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27 return d
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28
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29 def chunkiter(source):
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30 """iterate through the chunks in source"""
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31 while 1:
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32 c = getchunk(source)
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33 if not c:
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34 break
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35 yield c
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36
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37 def genchunk(data):
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38 """build a changegroup chunk"""
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39 header = struct.pack(">l", len(data)+ 4)
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40 return "%s%s" % (header, data)
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41
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42 def closechunk():
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43 return struct.pack(">l", 0)
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44