annotate mercurial/changegroup.py @ 2283:e506c14382fd

deprecate 'update -m'. use 'merge' instead.
author Vadim Gelfer <vadim.gelfer@gmail.com>
date Sun, 14 May 2006 21:07:34 -0700
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
1997
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