Mercurial > hg
annotate contrib/debugcmdserver.py @ 46192:25d11b24dedf
upgrade: move printing of unused optimizations to UpgradeOperation class
Differential Revision: https://phab.mercurial-scm.org/D9578
author | Pulkit Goyal <7895pulkit@gmail.com> |
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date | Mon, 14 Dec 2020 13:48:25 +0530 |
parents | c102b704edb5 |
children | 6000f5b25c9b |
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global: use python3 in shebangs
Gregory Szorc <gregory.szorc@gmail.com>
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1 #!/usr/bin/env python3 |
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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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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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13 |
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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 |
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27 def read(size): |
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28 data = sys.stdin.read(size) |
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29 if not data: |
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30 raise EOFError |
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31 sys.stdout.write(data) |
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32 sys.stdout.flush() |
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33 return data |
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34 |
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35 |
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36 try: |
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37 while True: |
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38 header = read(outputfmtsize) |
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39 channel, length = struct.unpack(outputfmt, header) |
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40 log.write('%s, %-4d' % (channel, length)) |
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41 if channel in 'IL': |
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42 log.write(' -> waiting for input\n') |
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43 else: |
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44 data = read(length) |
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45 log.write(' -> %r\n' % data) |
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46 log.flush() |
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47 except EOFError: |
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48 pass |
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49 finally: |
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50 if log != sys.stderr: |
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51 log.close() |