#pragma once

#include <stdint.h>
#include <stdlib.h>

typedef char *string; // differentiate null-terminated C-string from bytes

/**
 * Analog to `strstr()`, for non-C-string haystacks.
 */
char *memstr(char *haystack, size_t n, string needle);

/**
 * Safe version of `strtoul()`
 *
 * Will return the result of strtoul, unless an error occurs.
 * In that case, the given message will be printed before exiting the program.
 */
uint16_t safe_strtoul(const char *restrict nptr, char **restrict endptr,
                      int base, const string message);

/**
 * creates a 16 bit hash value of the given buffer
 * @param buffer
 * @param buf_len
 * @return the 16 bit hash
 */
uint16_t pseudo_hash(const unsigned char *buffer, size_t buf_len);