Staging
v0.5.1
v0.5.1
https://github.com/python/cpython
Tip revision: 1da43e5e916949c8e849e656d9d05fa4b9d6836c authored by Benjamin Peterson on 26 June 2009, 13:21:52 UTC
rearrange the sections of the README, so they'll hopefully be more in the order people will interested in
rearrange the sections of the README, so they'll hopefully be more in the order people will interested in
Tip revision: 1da43e5
md5sum.py
#! /usr/bin/env python
"""Python utility to print MD5 checksums of argument files.
"""
bufsize = 8096
fnfilter = None
rmode = 'rb'
usage = """
usage: sum5 [-b] [-t] [-l] [-s bufsize] [file ...]
-b : read files in binary mode (default)
-t : read files in text mode (you almost certainly don't want this!)
-l : print last pathname component only
-s bufsize: read buffer size (default %d)
file ... : files to sum; '-' or no files means stdin
""" % bufsize
import sys
import os
import getopt
import md5
def sum(*files):
sts = 0
if files and isinstance(files[-1], file):
out, files = files[-1], files[:-1]
else:
out = sys.stdout
if len(files) == 1 and not isinstance(files[0], str):
files = files[0]
for f in files:
if isinstance(f, str):
if f == '-':
sts = printsumfp(sys.stdin, '<stdin>', out) or sts
else:
sts = printsum(f, out) or sts
else:
sts = sum(f, out) or sts
return sts
def printsum(filename, out=sys.stdout):
try:
fp = open(filename, rmode)
except IOError as msg:
sys.stderr.write('%s: Can\'t open: %s\n' % (filename, msg))
return 1
if fnfilter:
filename = fnfilter(filename)
sts = printsumfp(fp, filename, out)
fp.close()
return sts
def printsumfp(fp, filename, out=sys.stdout):
m = md5.new()
try:
while 1:
data = fp.read(bufsize)
if not data:
break
m.update(data)
except IOError as msg:
sys.stderr.write('%s: I/O error: %s\n' % (filename, msg))
return 1
out.write('%s %s\n' % (m.hexdigest(), filename))
return 0
def main(args = sys.argv[1:], out=sys.stdout):
global fnfilter, rmode, bufsize
try:
opts, args = getopt.getopt(args, 'blts:')
except getopt.error as msg:
sys.stderr.write('%s: %s\n%s' % (sys.argv[0], msg, usage))
return 2
for o, a in opts:
if o == '-l':
fnfilter = os.path.basename
elif o == '-b':
rmode = 'rb'
elif o == '-t':
rmode = 'r'
elif o == '-s':
bufsize = int(a)
if not args:
args = ['-']
return sum(args, out)
if __name__ == '__main__' or __name__ == sys.argv[0]:
sys.exit(main(sys.argv[1:], sys.stdout))