#include "strings.h"
#include <stdlib.h>

int strprefix(const char* prefix, const char* str) {
	return strncmp(prefix, str, strlen(prefix)) == 0;
}

int streq(const char* a, const char* b) {
	return strncmp(a, b, strlen(a)) == 0;
}

char* concat_array(const char** array, size_t size, size_t *output_size) {
	if (array == NULL || size == 0) return NULL;

	size_t total_size = 0;
	for (size_t i = 0; i < size; i++)
		total_size += strlen(array[i]);

	if (total_size == 0) return NULL;

	char* result = malloc(total_size + 1);
	size_t current_index = 0;

	for (size_t i = 0; i < size; i++) {
		size_t curr_len = strlen(array[i]);
		strncpy(result + current_index, array[i], curr_len);
		current_index += curr_len;
	}

	if (output_size != NULL) *output_size = total_size;
	return result;
}