mirror of
https://github.com/richgel999/ufo_data.git
synced 2024-10-01 01:45:37 -04:00
151 lines
4.1 KiB
C
151 lines
4.1 KiB
C
/* array.h - automatic dynamic array for pointers */
|
|
|
|
/*
|
|
* Copyright (c) 2008, Natacha Porté
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#ifndef LITHIUM_ARRAY_H
|
|
#define LITHIUM_ARRAY_H
|
|
|
|
#include <stdlib.h>
|
|
|
|
|
|
/********************
|
|
* TYPE DEFINITIONS *
|
|
********************/
|
|
|
|
/* struct array • generic linear array */
|
|
struct array {
|
|
void* base;
|
|
int size;
|
|
int asize;
|
|
size_t unit; };
|
|
|
|
|
|
/* struct parray • array of pointers */
|
|
struct parray {
|
|
void ** item;
|
|
int size;
|
|
int asize; };
|
|
|
|
|
|
/* array_cmp_fn • comparison functions for sorted arrays */
|
|
typedef int (*array_cmp_fn)(void *key, void *array_entry);
|
|
|
|
|
|
|
|
/***************************
|
|
* GENERIC ARRAY FUNCTIONS *
|
|
***************************/
|
|
|
|
/* arr_adjust • shrink the allocated memory to fit exactly the needs */
|
|
int
|
|
arr_adjust(struct array *);
|
|
|
|
/* arr_free • frees the structure contents (buf NOT the struct itself) */
|
|
void
|
|
arr_free(struct array *);
|
|
|
|
/* arr_grow • increases the array size to fit the given number of elements */
|
|
int
|
|
arr_grow(struct array *, int);
|
|
|
|
/* arr_init • initialization of the contents of the struct */
|
|
void
|
|
arr_init(struct array *, size_t);
|
|
|
|
/* arr_insert • inserting elements nb before the nth one */
|
|
int
|
|
arr_insert(struct array *, int nb, int n);
|
|
|
|
/* arr_item • returns a pointer to the n-th element */
|
|
void *
|
|
arr_item(struct array *, int);
|
|
|
|
/* arr_newitem • returns the index of a new element appended to the array */
|
|
int
|
|
arr_newitem(struct array *);
|
|
|
|
/* arr_remove • removes the n-th elements of the array */
|
|
void
|
|
arr_remove(struct array *, int);
|
|
|
|
/* arr_sorted_find • O(log n) search in a sorted array, returning entry */
|
|
/* equivalent to bsearch(key, arr->base, arr->size, arr->unit, cmp) */
|
|
void *
|
|
arr_sorted_find(struct array *, void *key, array_cmp_fn cmp);
|
|
|
|
/* arr_sorted_find_i • O(log n) search in a sorted array,
|
|
* returning index of the smallest element larger than the key */
|
|
int
|
|
arr_sorted_find_i(struct array *, void *key, array_cmp_fn cmp);
|
|
|
|
|
|
/***************************
|
|
* POINTER ARRAY FUNCTIONS *
|
|
***************************/
|
|
|
|
/* parr_adjust • shrinks the allocated memory to fit exactly the needs */
|
|
int
|
|
parr_adjust(struct parray *);
|
|
|
|
/* parr_free • frees the structure contents (buf NOT the struct itself) */
|
|
void
|
|
parr_free(struct parray *);
|
|
|
|
/* parr_grow • increases the array size to fit the given number of elements */
|
|
int
|
|
parr_grow(struct parray *, int);
|
|
|
|
/* parr_init • initialization of the struct (which is equivalent to zero) */
|
|
void
|
|
parr_init(struct parray *);
|
|
|
|
/* parr_insert • inserting nb elements before the nth one */
|
|
int
|
|
parr_insert(struct parray *, int nb, int n);
|
|
|
|
/* parr_pop • pops the last item of the array and returns it */
|
|
void *
|
|
parr_pop(struct parray *);
|
|
|
|
/* parr_push • pushes a pointer at the end of the array (= append) */
|
|
int
|
|
parr_push(struct parray *, void *);
|
|
|
|
/* parr_remove • removes the n-th element of the array and returns it */
|
|
void *
|
|
parr_remove(struct parray *, int);
|
|
|
|
/* parr_sorted_find • O(log n) search in a sorted array, returning entry */
|
|
void *
|
|
parr_sorted_find(struct parray *, void *key, array_cmp_fn cmp);
|
|
|
|
/* parr_sorted_find_i • O(log n) search in a sorted array,
|
|
* returning index of the smallest element larger than the key */
|
|
int
|
|
parr_sorted_find_i(struct parray *, void *key, array_cmp_fn cmp);
|
|
|
|
/* parr_top • returns the top the stack (i.e. the last element of the array) */
|
|
void *
|
|
parr_top(struct parray *);
|
|
|
|
|
|
#endif /* ndef LITHIUM_ARRAY_H */
|
|
|
|
/* vim: set filetype=c: */
|