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"""hasher function that will calculate sha1 hash
directory contents
"""
import hashlib, os
import logging
def get_hash_of_dirs(dirs):
"""Hasher function for a directory and its files"""
sha_hash = hashlib.sha1()
for directory in dirs:
if not os.path.exists (directory):
return -1
try:
for root, dirs, files in os.walk(directory):
for names in files:
filepath = os.path.join(root, names)
try:
file_obj = open(filepath, 'rb')
except Exception, error:
# You can't open the file for some reason
logging.critical(
'cannot open file %s: %s',
filepath,
error
)
file_obj.close()
continue
while 1:
# Read file in as little chunks
buf = file_obj.read(4096)
if not buf : break
sha_hash.update(hashlib.sha1(buf).hexdigest())
file_obj.close()
except Exception:
import traceback
# Print the stack traceback
traceback.print_exc()
return -2
return sha_hash.hexdigest()
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