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pyeclib/test/ec_pyeclib_decode.py

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2013-10-01 17:26:27 -07:00
# Copyright (c) 2013, Kevin Greenan (kmgreen2@gmail.com)
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# Redistributions of source code must retain the above copyright notice, this
# list of conditions and the following disclaimer.
#
# Redistributions in binary form must reproduce the above copyright notice, this
# list of conditions and the following disclaimer in the documentation and/or
# other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY
# THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
# EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
# INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
import ec_iface
import ec_iface.ec
import ec_iface.ec_pyeclib as ec_pyeclib
from ec_iface.ec import ECDriver
import pyeclib
import random
import string
import sys
import os
import argparse
parser = argparse.ArgumentParser(description='Decoder for PyECLib.')
parser.add_argument('k', type=int, help='number of data elements')
parser.add_argument('m', type=int, help='number of parity elements')
parser.add_argument('type', help='EC algorithm used')
parser.add_argument('fragments', metavar='fragment', nargs='+',
help='fragments to decode')
parser.add_argument('filename', help='output file')
args = parser.parse_args()
print args.k
print args.m
print args.type
print args.fragments
print args.filename
ec_driver = ECDriver("ec_iface.ec_pyeclib.ECPyECLibDriver", k=args.k, m=args.m, type=args.type)
fragment_list = []
for fragment in args.fragments:
fp = open("%s" % fragment, "r")
fragment_list.append(fp.read())
fp.close()
fp = open("%s.decoded" % args.filename, "w")
decoded_file=ec_driver.decode(fragment_list)
fp.write(decoded_file)
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fp.close()