hash.h

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#pragma once
#include "io.h"
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>

#ifndef SYS_HASH_SIZE
#define SYS_HASH_SIZE 32
#endif

#ifndef SYS_HASH_CAPACITY
#ifdef SYSTEM_NAME_PICO
#define SYS_HASH_CAPACITY 1
#else
#define SYS_HASH_CAPACITY 4
#endif
#endif

#ifdef __cplusplus
extern "C" {
#endif

// TYPES

typedef enum sys_hash_algorithm_t {
  sys_hash_md5 = 1, 
  sys_hash_sha256,  
} sys_hash_algorithm_t;

typedef struct sys_hash_t sys_hash_t;

// LIFECYCLE

sys_hash_t *sys_hash_init(sys_hash_algorithm_t algorithm);

void sys_hash_deinit(sys_hash_t *hash);

// PUBLIC METHODS

size_t sys_hash_size(const sys_hash_t *hash);

bool sys_hash_update(sys_hash_t *hash, sys_iostream_t *stream, size_t size);

const uint8_t *sys_hash_finalize(sys_hash_t *hash);

uintptr_t sys_hash_djb2(const char *str);

#ifdef __cplusplus
}
#endif