/** @license 2023 Neil Edelman, distributed under the terms of the
 [MIT License](https://opensource.org/licenses/MIT).

 Temporary strings duplicated from substrings.

 @std C89 */

#include "lorem.h"
#include <assert.h>
#include <errno.h>

/*#define ARRAY_NAME block
#define ARRAY_TYPE char *
#include "array.h"*/

#define POOL_NAME char
#define POOL_TYPE char
#include "pool.h"

static struct char_pool pool;

const char *lorem_dup(const struct substring sub) {
	char *string;
	if(!sub.sub) { errno = EDOM; return 0; }
	if(sub.size == ~(size_t)0) { errno = ERANGE; return 0; }
	if(!char_pool_buffer(&pool, sub.size + 1)) return 0;
	assert(pool.capacity0 - pool.slots.data[0].size >= sub.size + 1);
	string = pool.slots.data[0].slab + pool.slots.data[0].size;
	memcpy(string, sub.sub, sub.size);
	string[sub.size] = '\0';
	pool.slots.data[0].size += sub.size + 1;
	return string;
}

void lorem_(void) { char_pool_(&pool); }