70 lines
1.6 KiB
C++
70 lines
1.6 KiB
C++
#include <cstring>
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#include <fstream>
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#include <vector>
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#include <cstdint>
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#include <iostream>
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#include "huffman.hpp"
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std::vector<std::uint8_t> read_file(char *filename)
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{
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std::ifstream input_file{ filename, std::ios::binary | std::ios::in };
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input_file.exceptions(std::ios::badbit | std::ios::failbit);
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return std::vector<std::uint8_t>{ std::istreambuf_iterator<char>(input_file), {} };
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}
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enum class direction {
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compress,
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decompress
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};
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int show_usage()
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{
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std::cerr << "Usage: huffman (compress|decompress) input_file output_file." << std::endl;
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return 1;
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}
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int main(int argc, char **argv)
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{
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direction operation;
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if (argc != 4)
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{
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return show_usage();
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}
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if (std::strcmp(argv[1], "compress") == 0)
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{
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operation = direction::compress;
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}
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else if (std::strcmp(argv[1], "decompress") == 0)
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{
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operation = direction::decompress;
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}
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else
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{
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return show_usage();
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}
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std::vector<std::uint8_t> input;
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try
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{
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input = read_file(argv[2]);
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}
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catch (std::iostream::failure& exception)
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{
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std::cerr << "Error opening file \"" << argv[2] << "\" for reading." << std::endl;
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return 2;
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}
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std::ofstream output_file{ argv[3], std::ios::binary | std::ios::out | std::ios::trunc };
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output_file.exceptions(std::ios::badbit | std::ios::failbit);
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switch (operation)
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{
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case direction::compress:
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compress(input, output_file);
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break;
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case direction::decompress:
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decompress(input, output_file);
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break;
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}
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return 0;
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}
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