view tests/md5sum.py @ 4193:9e3121017fb2

Optimize return value of util._matcher for common command line case This will trigger every time somebody runs something like "hg diff" or "hg status" without any arguments. The important part here is returning util.always as the match function, which is a much simpler (and faster) function than the usual return value, and allows other code to just skip the filtering if it knows all files will match.
author Alexis S. L. Carvalho <alexis@cecm.usp.br>
date Sat, 10 Mar 2007 23:01:00 -0300
parents 306055f5b65c
children
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#!/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
import os
import md5

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.new()
    try:
        while 1:
            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)