Mercurial > hg
annotate hgext/inotify/common.py @ 9241:d98cef25b5af
Merge with crew-stable
author | Martin Geisler <mg@lazybytes.net> |
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date | Fri, 24 Jul 2009 15:28:29 +0200 |
parents | 3e09bc5fee12 |
children | 95e1867f765b |
rev | line source |
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6239 | 1 # server.py - inotify common protocol code |
2 # | |
3 # Copyright 2006, 2007, 2008 Bryan O'Sullivan <bos@serpentine.com> | |
4 # Copyright 2007, 2008 Brendan Cully <brendan@kublai.com> | |
5 # | |
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6 # This software may be used and distributed according to the terms of the |
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7 # GNU General Public License version 2, incorporated herein by reference. |
6239 | 8 |
9 import cStringIO, socket, struct | |
10 | |
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11 """ |
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12 Protocol between inotify clients and server: |
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13 |
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14 Client sending query: |
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15 1) send protocol version number |
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16 2) send query type (string, 4 letters long) |
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17 3) send query parameters: |
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18 - For STAT, N+1 \0-separated strings: |
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19 1) N different names that need checking |
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20 2) 1 string containing all the status types to match |
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21 - No parameter needed for DBUG |
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22 |
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23 Server sending query answer: |
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24 1) send protocol version number |
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25 2) send query type |
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26 3) send struct.pack'ed headers describing the length of the content: |
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27 e.g. for STAT, receive 8 integers describing the length of the |
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28 8 \0-separated string lists ( one list for each lmar!?ic status type ) |
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29 |
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30 """ |
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31 |
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32 version = 2 |
6239 | 33 |
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34 resphdrfmts = { |
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35 'STAT': '>llllllll', # status requests |
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36 'DBUG': '>l' # debugging queries |
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37 } |
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38 resphdrsizes = dict((k, struct.calcsize(v)) |
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39 for k, v in resphdrfmts.iteritems()) |
6239 | 40 |
41 def recvcs(sock): | |
42 cs = cStringIO.StringIO() | |
43 s = True | |
44 try: | |
45 while s: | |
46 s = sock.recv(65536) | |
47 cs.write(s) | |
48 finally: | |
49 sock.shutdown(socket.SHUT_RD) | |
50 cs.seek(0) | |
51 return cs |