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/*
* Copyright 2003-2019 Gentoo Foundation
* Distributed under the terms of the GNU General Public License v2
*
* Copyright 2003-2007 Ned Ludd - <solar@gentoo.org>
* Copyright 2004-2014 Mike Frysinger - <vapier@gentoo.org>
* Copyright 2018- Fabian Groffen - <grobian@gentoo.org>
*/
#ifndef _XARRAY_H
#define _XARRAY_H 1
#include <stdlib.h>
#include <xalloc.h>
typedef struct {
void **eles;
size_t num;
size_t len;
} array_t;
#define xrealloc_array(ptr, size, ele_size) xrealloc(ptr, (size) * (ele_size))
/* The assignment after the check is unfortunate as we do a non-NULL check (we
* already do not permit pushing of NULL pointers), but we can't put it in the
* increment phase as that will cause a load beyond the bounds of valid memory.
*/
/* TODO: remove ele = NULL after checking all consumers don't rely on this */
#define array_for_each(arr, n, ele) \
for (n = 0, ele = NULL; n < array_cnt(arr) && (ele = (arr)->eles[n]); n++)
#define array_for_each_rev(arr, n, ele) \
for (n = array_cnt(arr); n-- > 0 && (ele = (arr)->eles[n]); /*nothing*/)
#define array_get_elem(arr, n) (arr->eles[n])
#define array_init_decl { .eles = NULL, .num = 0, }
#define array_cnt(arr) (arr)->num
#define DECLARE_ARRAY(arr) array_t _##arr = array_init_decl, *arr = &_##arr
#define DEFINE_ARRAY(arr) array_t *arr;
#define xarraypush_str(arr, ele) xarraypush(arr, ele, strlen(ele) + 1 /*NUL*/)
#define xarraypush_struct(arr, ele) xarraypush(arr, ele, sizeof(*(ele)))
void *xarrayget(array_t *arr, size_t idx);
void *xarraypush_ptr(array_t *arr, void *ele);
void *xarraypush(array_t *arr, const void *ele, size_t ele_len);
void xarraysort(array_t *arr, int (*compar)(const void *, const void *));
void xarraydelete_ptr(array_t *arr, size_t elem);
void xarraydelete(array_t *arr, size_t elem);
void xarrayfree_int(array_t *arr);
void xarrayfree(array_t *arr);
#endif
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