Hello,
See below a program that will go through a directory and for each file
print user, group, size and md5sum.
A few questions:
1) It seems to fall over if I pass "." as a directory - how can I stop this?
2) When I wrote the methods I decided to do isafile() checks there,
but subsequently realised that in __main__ it would print out None for
each non-file, so I put the check in here too. Which is better? Or
is there a better approach?
3) How can I get this to print in a format that makes it easy to read?
ie tabulated so that the info is presented in aligned columns?
Code follows:
#!/usr/bin/env python
# Standard library imports
import unittest, os, sys, pwd, grp, md5
# Global defines
wp = sys.argv[1]
# Exception classes
# Utility functions
def getSize(fn):
"""Get the size of a file in kb"""
fp = os.path.join(wp, fn)
if os.path.isfile(fp):
return os.stat(fp).st_size
def getUser(fn):
"""Get username of file owner."""
fp = os.path.join(wp, fn)
if os.path.isfile(fp):
uid = os.stat(fp).st_uid
return pwd.getpwuid(uid).pw_name
def getGroup(fn):
"""Get the group name of the file owner."""
fp = os.path.join(wp, fn)
if os.path.isfile(fp):
gid = os.stat(fp).st_gid
return grp.getgrgid(gid).gr_name
def md5Sum(fn):
"""Get md5sum for a file."""
fp = os.path.join(wp, fn)
if os.path.isfile(fp):
try:
fo = open(fp, 'rb')
except (IOError, OSError):
print "Could not open file '%s', skipping..." % fp
return None
else:
m = md5.new(fo.read()).hexdigest()
fo.close()
return m
# Classes
# Unit tests
class UnitTests(unittest.TestCase):
"""Do not taunt unit tests."""
def testGetSize(self):
"""Get the size of a file in kb"""
self.assertEqual(getSize("foo"), 24)
def testGetUser(self):
"""Get the username of the file owner"""
self.assertEqual(getUser("foo"), "nelsonst")
def testGetGroup(self):
"""Get the group name of the file owner"""
self.assertEqual(getGroup("foo"), "staff")
def testMd5Sum(self):
"""Get md5sum for file."""
self.assertEqual(md5Sum("foo"), "faac88479f39ba498e827622a2a4d649")
def doTests():
suite = unittest.makeSuite(UnitTests,'test')
runner = unittest.TextTestRunner()
result = runner.run(suite)
if __name__ == "__main__":
doTests()
for f in os.listdir(wp):
if os.path.isfile(os.path.join(wp, f)):
print f, getSize(f), getUser(f), getGroup(f), md5Sum(f)
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