view tests/md5sum.py @ 18134:6c35b53cd28b

copies: separate moves via directory renames from explicit copies

Currently the "copy" dict contains both explicit copies/moves made by a
context and pending moves that need to happen because the other context moved
the directory the file was in. For explicit copies, the dict stores a
destination to source map, while for pending moves via directory renames, it
stores a source to destination map. The merge code uses this fact in a non-
obvious way to differentiate between these two cases.

We make this explicit by storing these pending moves in a separate dict. The
dict still has a source to destination map, but that is called out in the
docstring.

#!/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.

import sys, os

try:
    from hashlib import md5
except ImportError:
    from md5 import md5

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, msg:
        sys.stderr.write('%s: Can\'t open: %s\n' % (filename, msg))
        sys.exit(1)

    m = md5()
    try:
        while True:
            data = fp.read(8192)
            if not data:
                break
            m.update(data)
    except IOError, 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)