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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 defined HAVE_STRINGS_H && !defined _STRING_H && !defined __USE_BSD
# 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 *arr;
arr = (struct array_list*)calloc(1, sizeof(struct array_list));
if(!arr) return NULL;
arr->size = ARRAY_LIST_DEFAULT_SIZE;
arr->length = 0;
arr->free_fn = free_fn;
if(!(arr->array = (void**)calloc(sizeof(void*), arr->size))) {
free(arr);
return NULL;
}
return arr;
}
extern void
array_list_free(struct array_list *arr)
{
int i;
for(i = 0; i < arr->length; i++)
if(arr->array[i]) arr->free_fn(arr->array[i]);
free(arr->array);
free(arr);
}
void*
array_list_get_idx(struct array_list *arr, int i)
{
if(i >= arr->length) return NULL;
return arr->array[i];
}
static int array_list_expand_internal(struct array_list *arr, int max)
{
void *t;
int new_size;
if(max < arr->size) return 0;
new_size = json_max(arr->size << 1, max);
if(!(t = realloc(arr->array, new_size*sizeof(void*)))) return -1;
arr->array = (void**)t;
(void)memset(arr->array + arr->size, 0, (new_size-arr->size)*sizeof(void*));
arr->size = new_size;
return 0;
}
int
array_list_put_idx(struct array_list *arr, int idx, void *data)
{
if(array_list_expand_internal(arr, idx)) return -1;
if(arr->array[idx]) arr->free_fn(arr->array[idx]);
arr->array[idx] = data;
if(arr->length <= idx) arr->length = idx + 1;
return 0;
}
int
array_list_add(struct array_list *arr, void *data)
{
return array_list_put_idx(arr, arr->length, data);
}
int
array_list_length(struct array_list *arr)
{
return arr->length;
}
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