revlog: introduce an explicit NodeMap class for pure code
This class make the "pure" nodemap raise the same exception than the C-extension
one.
This is a step toward unifying nodemap and index, the class is not meant to
survive on the long run.
This work is part of a refactoring to unify the revlog index and the nodemap.
This unification prepare the use of a persistent nodemap.
There is a new `isinstance` call, it will be cleaned up in coming changesets.
Differential Revision: https://phab.mercurial-scm.org/D7312
#!/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)