tests/md5sum.py

mq: fix qrefresh case sensitivity (issue3271)

When calling qrefresh with filenames, the filenames were being
treated as case-sensistive on case-insensitive file systems.
So 'qrefresh foo' would not match file 'Foo', and it failed silently.
This fix makes it work correctly on case-insensitive file systems.

Previously the matching function was applied directly to the filenames.
Now we apply the matching function through repo.status, which handles
the case logic for us. A side effect of using repo.status is that
if the qrefresh file doesn't exist, there is output stating it
doesn't exist.

Adds a test to an existing mq refresh case test.

#!/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)