Codes_and_Cryptography/testEncoderDecoder.py at main · JasonYuyzy/Codes_and_Cryptography · GitHub

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# Test your encoder and decoder with input file specified by the user

# Usage: python testEncoderDecoder.py testFile
# where testFile.tex is the name of the input tex file

import os
import sys

testFile        = sys.argv[1]
inputFile       = testFile + ".tex"
encodedFile     = testFile + ".lz"
decodedFile     = testFile + "-decoded.tex"


# Size of input file
inputSize = os.path.getsize(inputFile)
print("Input file: \t" + inputFile)
print("Input size: \t" + str(inputSize) + "\n")

# Runs your encoder and prints out size of encoded file
os.system("python encoder.py " + inputFile)
encodedSize = os.path.getsize(encodedFile)
print("Encoded file: \t" + encodedFile)
print("Encoded size: \t" + str(encodedSize) + "\n")


# Runs your decoder and prints out size of decoded file
os.system("python decoder.py " + encodedFile)
decodedSize = os.path.getsize(decodedFile)
print("Decoded file: \t" + decodedFile)
print("Decoded size: \t"  + str(decodedSize) + "\n")

# Checks whether input and decoded files have the same size
if decodedSize != inputSize:
    print("ERROR: Incorrect decoded file size")
else:
    # Checks that input and decoded files are the same
    if open(inputFile,'r').read() != open(decodedFile,'r').read():
        print("\n ERROR: Incorrect decoded file contents")
    else:
        # Files are the same.
        print("\nSUCCESS: Lossless compression" )
        print("COMPRESSION RATIO: \t"  + str(inputSize / encodedSize))