#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#ifndef COMPRESSOR_H
#define COMPRESSOR_H



int compress_1(const char* input_file_name, const char* output_file_name);

int decompress_1(const char* input_file_name, const char* output_file_name);

int compress_2(const char* input_file_name, const char* output_file_name);

int decompress_2(const char* input_file_name, const char* output_file_name);

unsigned char* read_file(const char* file_name, size_t* size);

int write_file(const char* file_name, const unsigned char* buffer, size_t size);


typedef struct HuffmanNode {
    unsigned char symbol;
    size_t frequency;
    struct HuffmanNode* left;
    struct HuffmanNode* right;
} HuffmanNode;

HuffmanNode* build_huffman_tree(const unsigned char* data, size_t size);

void generate_huffman_codes(HuffmanNode* root, char** codes, char* buffer, int depth);

void free_huffman_tree(HuffmanNode* root);

HuffmanNode* deserialize_tree(FILE* file);

#endif