Mercurial > hg
view contrib/debugcmdserver.py @ 44972:9e5f598fd29b stable
py3: fix comparison between int and None
If stop is None, the condition was always false on Python 2, as None compares
smaller than ints. Therefore we make the condition false if stop is None.
author | Manuel Jacob <me@manueljacob.de> |
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date | Tue, 16 Jun 2020 14:38:50 +0200 |
parents | 2372284d9457 |
children | c102b704edb5 |
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#!/usr/bin/env python # # Dumps output generated by Mercurial's command server in a formatted style to a # given file or stderr if '-' is specified. Output is also written in its raw # format to stdout. # # $ ./hg serve --cmds pipe | ./contrib/debugcmdserver.py - # o, 52 -> 'capabilities: getencoding runcommand\nencoding: UTF-8' from __future__ import absolute_import, print_function import struct import sys if len(sys.argv) != 2: print('usage: debugcmdserver.py FILE') sys.exit(1) outputfmt = '>cI' outputfmtsize = struct.calcsize(outputfmt) if sys.argv[1] == '-': log = sys.stderr else: log = open(sys.argv[1], 'a') def read(size): data = sys.stdin.read(size) if not data: raise EOFError sys.stdout.write(data) sys.stdout.flush() return data try: while True: header = read(outputfmtsize) channel, length = struct.unpack(outputfmt, header) log.write('%s, %-4d' % (channel, length)) if channel in 'IL': log.write(' -> waiting for input\n') else: data = read(length) log.write(' -> %r\n' % data) log.flush() except EOFError: pass finally: if log != sys.stderr: log.close()