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@EddieRingle
Created Oct 23, 2011
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A Neat DArray Implementation
/*
* Copyright (c) 2011 Eddie Ringle <eddie@eringle.net>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdlib.h>
#include <string.h>
#include "universal_include.h"
#include "darray.h"
DArray *crb_darray_create() {
DArray *array = malloc(sizeof(DArray));
array->size = 0;
array->capacity = 0;
array->highestIndex = 0;
array->data = NULL;
return array;
}
void crb_darray_destroy(DArray **_array) {
if (_array != NULL && *_array != NULL) {
if ((*_array)->data != NULL) {
free((*_array)->data);
}
free(*_array);
*_array = NULL;
}
}
void crb_darray_grow(DArray *_array) {
void **oldData;
int oldCapacity = _array->capacity;
if (_array->capacity < 1) {
_array->capacity = 32;
} else {
_array->capacity *= 2;
}
oldData = _array->data;
_array->data = calloc(_array->capacity, 1);
if (oldCapacity > 0) {
memcpy(_array->data, oldData, oldCapacity);
}
free(oldData);
}
int crb_darray_insert(DArray *_array, void *_data) {
if (_array != NULL && _data != NULL) {
if (_array->size == _array->capacity) {
crb_darray_grow(_array);
}
_array->highestIndex = _array->size;
_array->data[_array->size] = _data;
return _array->size++;
}
return -1;
}
void *crb_darray_get(DArray *_array, int _index) {
if (_array != NULL && _array->data != NULL) {
if (_index >= 0 && _index < _array->capacity) {
return _array->data[_index];
}
}
return NULL;
}
void *crb_darray_remove(DArray *_array, int _index) {
if (_array != NULL) {
void *data;
if (_index > _array->highestIndex) {
return NULL;
}
data = _array->data[_index];
if (data == NULL) {
return NULL;
}
_array->data[_index] = NULL;
_array->size--;
return data;
}
return NULL;
}
/*
* Copyright (c) 2011 Eddie Ringle <eddie@eringle.net>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __included_darray_h
#define __included_darray_h
#include "universal_include.h"
struct DArray {
int capacity;
int size;
int highestIndex;
void **data;
};
typedef struct DArray DArray;
DArray *crb_darray_create();
void crb_darray_destroy(DArray **_array);
void crb_darray_grow(DArray *_array);
int crb_darray_insert(DArray *_array, void *_data);
void *crb_darray_get(DArray *_array, int _index);
void *crb_darray_remove(DArray *_array, int _index);
#endif /* __included_darray_h */
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