def compress_each_file_in_folder():
path = './testfiles/'
for filename in listdir(path):
if '_compressed' not in filename and '_decompressed' not in filename:
print(filename)
filename, file_extension = os.path.splitext(filename)
infile = open(f'{path}{filename}{file_extension}', 'rb')
outfile = open(f'{path}{filename}_compressed{file_extension}',
'wb')
h = Huffman(infile, outfile)
h.compress()
def main():
try:
filename = sys.argv[1]
except IndexError:
print("Задайте файл с помощью аргументов командной строки")
return
if not os.path.exists(filename):
print("Файл не найден!")
return
print("Исходный файл: '{}' ({} байт)".format(filename,
os.path.getsize(filename)))
huf = Huffman(filename)
codes_filename, res_filename, zeroes = huf.compress(filename)
print("Сжатый файл: '{}' ({} байт)".format(res_filename,
os.path.getsize(res_filename)))
print("Размер таблицы кодов: {} байт".format(sys.getsizeof(
huf.codes_table)))
print("Нулей дописано в последний байт:", zeroes)
dec_filename = huf.decompress(filename, res_filename, zeroes)
print("Восстановленный файл: '{}' ({} байт)".format(
dec_filename, os.path.getsize(dec_filename)))
def main():
filename = 'ziip.rar' #'test.txt'
print("Исходный файл: '{}' ({} байт)".format(filename,
os.path.getsize(filename)))
huf = Huffman(filename)
res_filename, zeroes = huf.compress(filename)
print("Сжатый файл: '{}' ({} байт)".format(res_filename,
os.path.getsize(res_filename)))
print("Нулей дописано в последний байт:", zeroes)
dec_filename = huf.decompress(filename, res_filename, zeroes)
print("Восстановленный файл: '{}' ({} байт)".format(
dec_filename, os.path.getsize(dec_filename)))
komprimerede fil). Begge filer skal åbnes i “binary mode”. Når en
BitWriter instantieres, skal den have et file object som argument.
Opgave 2:
I opgave 2 skal man bruge metoderne readint32bits()
og readbit() fra klassen BitReader fra det udleverede bibliotek bitIO.py til at læse heltal (for hyppighedstabel) og bits (for
Huffmans-koderne) fra inputfilen (den komprimerede fil). Man skal
bruge kaldet write(bytes([b])) (hvor write() er fra file objects
og bytes() er en built-in funktion) til skrive bytes til outputfilen
(den genskabte originale fil). Her er b et heltal som repræsenterer
den byte, som skal skrives. Begge filer skal ˚abnes i “binary mode”.
Når en BitReader instantieres, skal den have et file object som
argument.
:Gruppe medlemmer:
Mads Emil Falkenstrøm, [email protected]
Mathias Birkebjerg Kristiansen, [email protected]
Patrick Nielsen, [email protected]
"""
import sys
from huffman import Huffman
if __name__ == '__main__':
infile = open(sys.argv[1], 'rb')
outfile = open(sys.argv[2], 'wb')
h = Huffman(infile, outfile)
h.compress()
from huffman import Huffman
import sys
path = 'images\\sample.bmp'
h = Huffman(path)
output_path = h.compress()
print("Compressed file path: " + output_path)
decom_path = h.decompress(output_path)
print("Decompressed file path: " + decom_path)
def compress_files():
infile = open('./testfiles/same.txt', 'rb')
outfile = open('./testfiles/same_compressed.txt', 'wb')
h = Huffman(infile, outfile)
h.compress()
from huffman import Huffman
pathFile = "./tests/data/textesimple.txt"
h = Huffman()
h.compressFile(pathFile)
compressedData = h.compress("Bonjour!!")
def main():
"""
DO NOT change this file
"""
INPUT_FILE = "FDREconomics.txt"
DECRYPT_FILE = "FDREconomicsDecrypt.txt"
ENCRYPT_FILE = "FDREconomicsEncrypt.txt"
DECRYPT_COMPRESS_FILE = "FDREconomicsDecryptComp.txt"
VIGENERE_KEY = "Give PEACE a chance!!"
print("(1) Read in original file from " + INPUT_FILE)
print(" Print the original file:")
print()
file_str = open(INPUT_FILE, 'r').read()
print(file_str)
print()
print("(2) Encrypt original file using key: " + VIGENERE_KEY)
print()
vig = Vigenere(VIGENERE_KEY)
en_file_str = vig.encrypt(file_str)
print("(3) Write out the encrypted file to " + ENCRYPT_FILE)
print()
codecs.open(ENCRYPT_FILE, 'w', encoding='utf8').write(en_file_str)
print("(4) Read in encrypted original file from " + ENCRYPT_FILE)
print(" Decrypt encrypted file using key")
print(" Print out decrypted file:")
print()
en_file_str = codecs.open(ENCRYPT_FILE, 'r', encoding='utf8').read()
message = vig.decrypt(en_file_str)
print(message)
print()
print("(5) Write out the decrypted file to " + DECRYPT_FILE)
print()
open(DECRYPT_FILE, 'w').write(message)
print("(6) Compress the original file and save in string")
print()
huff = Huffman()
binary_str = huff.compress(file_str)
print("(7) Decompress compressed file from the string")
print(" Print out decompressed file")
print()
message = huff.decompress(binary_str)
print(message)
print()
print("(8) Encrypt original file using key")
print()
vig = Vigenere(VIGENERE_KEY)
en_file_str = vig.encrypt(file_str)
print("(9) Compress the encrypted file and save in string")
print()
huff = Huffman()
binary_str = huff.compress(en_file_str)
print("(10) Decompress compressed encrypted file from the string")
print()
message = huff.decompress(binary_str)
print("(11) Decrypt decompressed encrypted file using key")
print(" Print out decrypted decompressed encrypted file")
print()
file_str = vig.decrypt(message)
print(file_str)
print()
print("(12) Write out the decrypted decompressed file to " +
DECRYPT_COMPRESS_FILE)
open(DECRYPT_COMPRESS_FILE, 'w').write(file_str)
def main():
"""
"""
INPUT_FILE = "FDREconomics.txt"
DECRYPT_FILE = "FDREconomicsDecrypt.txt"
ENCRYPT_FILE = "FDREconomicsEncrypt.txt"
COMPRESS_DAT_FILE = "FDREconomicsComp.dat"
ENCRYPT_COMPRESS_DAT_FILE = "FDREconomicsEncryptComp.dat"
DECRYPT_COMPRESS_FILE = "FDREconomicsDecryptComp.txt"
VIGENERE_KEY = "I love the USA!!"
print("(1) Read in original file: Using " + INPUT_FILE)
print(" Print the original file:")
print()
file_str = open(INPUT_FILE, 'r').read()
print(file_str)
print()
print("(2) Encrypt original file using key: '{}'".format(VIGENERE_KEY))
print()
vig = Vigenere(VIGENERE_KEY)
en_file_str = vig.encrypt(file_str)
print("(3) Write out the encrypted file without compression")
print(" Encrypted original file: Using " + ENCRYPT_FILE)
print()
open(ENCRYPT_FILE, 'w').write(en_file_str)
print("(4) Read in encrypted original file: " + ENCRYPT_FILE)
print(" Decrypt encrypted file using key")
print(" Print out decrypted file:")
print()
en_file_str = open(ENCRYPT_FILE, 'r').read()
message = vig.decrypt(en_file_str)
print(message)
print()
print("(5) Write out the decrypted file")
print(" Decrypted file: Using " + DECRYPT_FILE)
print()
open(DECRYPT_FILE, 'w').write(message)
print("(6) Compress the original file without encryption")
print(" Write out the file compressed without encryption")
print(" Compressed original file: Using " + COMPRESS_DAT_FILE)
print()
huff = Huffman()
binary_str = huff.compress(file_str)
if BITARRAY_EXISTS:
write_bin_file(COMPRESS_DAT_FILE, binary_str)
print("(7) Read in compressed original file without encryption")
print(" Decompress compressed file")
print(" Print out decompressed file")
print()
if BITARRAY_EXISTS:
binary_str = read_bin_file(COMPRESS_DAT_FILE)
message = huff.decompress(binary_str)
print(message)
print()
print("(8) Encrypt original file using key")
print()
vig = Vigenere(VIGENERE_KEY)
en_file_str = vig.encrypt(file_str)
print("(9) Compress the encrypted file")
print(" Write out the compressed encrypted file")
print(" Compressed encrypted file: Using " + ENCRYPT_COMPRESS_DAT_FILE)
print()
huff = Huffman()
binary_str = huff.compress(en_file_str)
if BITARRAY_EXISTS:
write_bin_file(ENCRYPT_COMPRESS_DAT_FILE, binary_str)
print("(10) Decompress compressed encrypted file")
print(" Read in compressed encrypted file")
print(" Compressed encrypted file: Using " + ENCRYPT_COMPRESS_DAT_FILE)
print()
if BITARRAY_EXISTS:
binary_str = read_bin_file(ENCRYPT_COMPRESS_DAT_FILE)
message = huff.decompress(binary_str)
print()
print("(11) Decrypt decompressed file using key")
print(" Print out decrypted decompressed file")
print()
file_str = vig.decrypt(message)
print(file_str)
print()
print("(12) Write out the decrypted decompressed file")
print(" Decrypted decompressed file: Using " + DECRYPT_COMPRESS_FILE)
open(DECRYPT_COMPRESS_FILE, 'w').write(file_str)
import cv2 import numpy as np import matplotlib.pyplot as plt from skimage import exposure import math from selffunc import * from jpg import JPEGEncode from rel import RLE from huffman import Huffman j = JPEGEncode() j.compress(0.2) j.compress(0.6) j.compress(0.8) rle = RLE() rle.compress() h = Huffman() h.compress(8) h.compress(16) h.compress(32)
