// Handle command line arguments

if (argc != 3) {

std::cerr << "Usage: " << argv[0] << " InputFile OutputFile" << std::endl;

return EXIT_FAILURE;

}

const char *inputFile = argv[1];

const char *outputFile = argv[2];

// Perform file decompression

std::ifstream in(inputFile, std::ios::binary);

std::ofstream out(outputFile, std::ios::binary);

BitInputStream bin(in);

try {

// Read frequency table

SimpleFrequencyTable freqs(std::vector<uint32_t>(257, 0));

for (uint32_t i = 0; i < 256; i++) {

uint32_t freq = 0;

for (int j = 0; j < 32; j++)

freq = (freq << 1) | bin.readNoEof(); // Big endian

freqs.set(i, freq);

}

freqs.increment(256); // EOF symbol

ArithmeticDecoder dec(32, bin);

while (true) {

uint32_t symbol = dec.read(freqs);

if (symbol == 256) // EOF symbol

break;

int b = static_cast<int>(symbol);

if (std::numeric_limits<char>::is_signed)

b -= (b >> 7) << 8;

out.put(static_cast<char>(b));

}

return EXIT_SUCCESS;

} catch (const char *msg) {

std::cerr << msg << std::endl;

return EXIT_FAILURE;

}