pyeclib/tools/pyeclib_encode.py

# 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:
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# 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
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# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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import pyeclib
from pyeclib.ec_iface import ECDriver
import random
import string
import sys
import os
import argparse

parser = argparse.ArgumentParser(description='Encoder 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('file_dir', help='directory with the file')
parser.add_argument('filename', help='file to encode')
parser.add_argument('fragment_dir', help='directory to drop encoded fragments')

args = parser.parse_args()

print args.k
print args.m
print args.type
print args.filename

ec_driver = ECDriver(
    "pyeclib.core.ECPyECLibDriver",
    k=args.k,
    m=args.m,
    type=args.type)

fp = open("%s/%s" % (args.file_dir, args.filename), "r")

whole_file_str = fp.read()

fragments = ec_driver.encode(whole_file_str)

fp.close()

i = 0
for fragment in fragments:
    fp = open("%s/%s.%d" % (args.fragment_dir, args.filename, i), "w")
    fp.write(fragment)
    fp.close()
    i += 1