view tests/testlib/sigpipe-worker.py @ 48851:d739cd69bb6a

revlog: return 0 for the fast_rank of nullrev By convention, the rank of the null revision is 0. This particular revision is never "physically" stored in the changelog, so it is a special case. For consistency, the value `None` is still being returned for revlogs which do not store the fast_rank property for any revision. Differential Revision: https://phab.mercurial-scm.org/D12208
author pacien <pacien.trangirard@pacien.net>
date Mon, 21 Feb 2022 15:53:03 +0100
parents 27ff81547d35
children 6000f5b25c9b
line wrap: on
line source

#!/usr/bin/env python3
#
# This is literally `cat` but in python, one char at a time.
#
# see sigpipe-remote.py for details.
from __future__ import print_function

import io
import os
import sys


if isinstance(sys.stdout.buffer, io.BufferedWriter):
    print('SIGPIPE-WORKER: script need unbuffered output', file=sys.stderr)
    sys.exit(255)

while True:
    c = os.read(sys.stdin.fileno(), 1)
    os.write(sys.stdout.fileno(), c)