Mercurial > hg > mercurial-crew-with-dirclash

annotate mercurial/changegroup.py @ 2569:2264b2b077a1

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run-tests.py: make tests use same python interpreter as test harness. this is wanted because some tests run python interpreter directly. must use same python interpreter in tests as in main harness or problems will happen because of e.g. different python abi if run-tests.py run with python 2.5 but system python is 2.4. fix is to see if system python is used and is named python. if no, put symlink called python at front of shell search path.
author Vadim Gelfer <vadim.gelfer@gmail.com>
date Thu, 06 Jul 2006 10:09:24 -0700
parents fe1689273f84
children 025f68f22ae2
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1981
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1 """
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2 changegroup.py - Mercurial changegroup manipulation functions
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3
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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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802e8a029d99 Added missing gettext import to changegroup.py.
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9 from i18n import gettext as _
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10 from demandload import *
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fe1689273f84 use demandload more.
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11 demandload(globals(), "struct util")
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12
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13 def getchunk(source):
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14 """get a chunk from a changegroup"""
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15 d = source.read(4)
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16 if not d:
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17 return ""
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18 l = struct.unpack(">l", d)[0]
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19 if l <= 4:
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20 return ""
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21 d = source.read(l - 4)
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22 if len(d) < l - 4:
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23 raise util.Abort(_("premature EOF reading chunk"
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24 " (got %d bytes, expected %d)")
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25 % (len(d), l - 4))
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26 return d
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27
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28 def chunkiter(source):
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29 """iterate through the chunks in source"""
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30 while 1:
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31 c = getchunk(source)
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32 if not c:
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33 break
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34 yield c
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35
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36 def genchunk(data):
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37 """build a changegroup chunk"""
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38 header = struct.pack(">l", len(data)+ 4)
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39 return "%s%s" % (header, data)
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40
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41 def closechunk():
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42 return struct.pack(">l", 0)
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43