annotate contrib/debugcmdserver.py @ 41404:43f9b8c0574b

notify: be more defensive aboute None values encoding.strtolocal is the identity function on Python 2 but an actual string manipulation routine on Python 3. In some cases, we were passing None, which caused Python 3 to barf. Let's change the code to react properly when the value is None. Differential Revision: https://phab.mercurial-scm.org/D5713
author Gregory Szorc <gregory.szorc@gmail.com>
date Sat, 26 Jan 2019 10:22:09 -0800
parents cd03fbd5ab57
children 2372284d9457
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1 #!/usr/bin/env python
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2 #
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3 # Dumps output generated by Mercurial's command server in a formatted style to a
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4 # given file or stderr if '-' is specified. Output is also written in its raw
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5 # format to stdout.
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6 #
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7 # $ ./hg serve --cmds pipe | ./contrib/debugcmdserver.py -
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8 # o, 52 -> 'capabilities: getencoding runcommand\nencoding: UTF-8'
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9
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cd03fbd5ab57 debugcmdserver: use absolute_import and print_function
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10 from __future__ import absolute_import, print_function
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11 import struct
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12 import sys
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14 if len(sys.argv) != 2:
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15 print('usage: debugcmdserver.py FILE')
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16 sys.exit(1)
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17
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18 outputfmt = '>cI'
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19 outputfmtsize = struct.calcsize(outputfmt)
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20
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21 if sys.argv[1] == '-':
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22 log = sys.stderr
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23 else:
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24 log = open(sys.argv[1], 'a')
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25
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26 def read(size):
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27 data = sys.stdin.read(size)
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28 if not data:
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29 raise EOFError
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30 sys.stdout.write(data)
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31 sys.stdout.flush()
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32 return data
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33
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34 try:
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35 while True:
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36 header = read(outputfmtsize)
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37 channel, length = struct.unpack(outputfmt, header)
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38 log.write('%s, %-4d' % (channel, length))
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39 if channel in 'IL':
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40 log.write(' -> waiting for input\n')
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41 else:
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42 data = read(length)
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43 log.write(' -> %r\n' % data)
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44 log.flush()
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45 except EOFError:
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46 pass
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47 finally:
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48 if log != sys.stderr:
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49 log.close()