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/*
* $Id: arraylist.c,v 1.4 2006/01/26 02:16:28 mclark Exp $
*
* Copyright (c) 2004, 2005 Metaparadigm Pte. Ltd.
* Michael Clark <michael@metaparadigm.com>
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the MIT license. See COPYING for details.
*
*/
#include "config.h"
#if STDC_HEADERS
# include <stdlib.h>
# include <string.h>
#endif /* STDC_HEADERS */
#if HAVE_STRINGS_H
# include <strings.h>
#endif /* HAVE_STRINGS_H */
#include "bits.h"
#include "arraylist.h"
struct array_list*
array_list_new(array_list_free_fn *free_fn)
{
struct array_list *this;
if(!(this = calloc(1, sizeof(struct array_list)))) return NULL;
this->size = ARRAY_LIST_DEFAULT_SIZE;
this->length = 0;
this->free_fn = free_fn;
if(!(this->array = calloc(sizeof(void*), this->size))) {
free(this);
return NULL;
}
return this;
}
extern void
array_list_free(struct array_list *this)
{
int i;
for(i = 0; i < this->length; i++)
if(this->array[i]) this->free_fn(this->array[i]);
free(this->array);
free(this);
}
void*
array_list_get_idx(struct array_list *this, int i)
{
if(i >= this->length) return NULL;
return this->array[i];
}
static int array_list_expand_internal(struct array_list *this, int max)
{
void *t;
int new_size;
if(max < this->size) return 0;
new_size = max(this->size << 1, max);
if(!(t = realloc(this->array, new_size*sizeof(void*)))) return -1;
this->array = t;
(void)memset(this->array + this->size, 0, (new_size-this->size)*sizeof(void*));
this->size = new_size;
return 0;
}
int
array_list_put_idx(struct array_list *this, int idx, void *data)
{
if(array_list_expand_internal(this, idx)) return -1;
if(this->array[idx]) this->free_fn(this->array[idx]);
this->array[idx] = data;
if(this->length <= idx) this->length = idx + 1;
return 0;
}
int
array_list_add(struct array_list *this, void *data)
{
return array_list_put_idx(this, this->length, data);
}
int
array_list_length(struct array_list *this)
{
return this->length;
}
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