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