view tests/md5sum.py @ 44718:0680b8a1992a

phabricator: avoid creating unstable children within the review stack

The instability occurred when rebasing something that has already been submitted
onto something that hasn't, and then resubmitting the stack.  Or as the test
shows, just resubmitting and including something earlier that wasn't previously
submitted.

There's a general case here where any children (not just the ones in the range
of commits posted for review) should be re-stabilized.  But handling the
selected commits here will cause the `local:commit` node values that are tracked
on Phabricator to be properly kept in sync.

Differential Revision: https://phab.mercurial-scm.org/D8436

#!/usr/bin/env python
#
# Based on python's Tools/scripts/md5sum.py
#
# This software may be used and distributed according to the terms
# of the PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2, which is
# GPL-compatible.

from __future__ import absolute_import

import hashlib
import os
import sys

try:
    import msvcrt

    msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY)
    msvcrt.setmode(sys.stderr.fileno(), os.O_BINARY)
except ImportError:
    pass

for filename in sys.argv[1:]:
    try:
        fp = open(filename, 'rb')
    except IOError as msg:
        sys.stderr.write('%s: Can\'t open: %s\n' % (filename, msg))
        sys.exit(1)

    m = hashlib.md5()
    try:
        for data in iter(lambda: fp.read(8192), b''):
            m.update(data)
    except IOError as msg:
        sys.stderr.write('%s: I/O error: %s\n' % (filename, msg))
        sys.exit(1)
    sys.stdout.write('%s  %s\n' % (m.hexdigest(), filename))

sys.exit(0)