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/* GNU mailutils - a suite of utilities for electronic mail
Copyright (C) 1999, 2000 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Library Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <errno.h>
#include <stdlib.h>
#include <mailutils/list.h>
#include <iterator0.h>
int
iterator_create (iterator_t *piterator, list_t list)
{
iterator_t iterator;
if (piterator == NULL || list == NULL)
return EINVAL;
iterator = calloc (sizeof (*iterator), 1);
if (iterator == NULL)
return ENOMEM;
iterator->list = list;
*piterator = iterator;
return 0;
}
void
iterator_destroy (iterator_t *piterator)
{
if (piterator && *piterator)
{
free (*piterator);
*piterator = NULL;
}
}
int
iterator_first (iterator_t iterator)
{
iterator->index = 0;
return 0;
}
int
iterator_next (iterator_t iterator)
{
iterator->index++;
return 0;
}
int
iterator_current (iterator_t iterator, void **pitem)
{
return list_get (iterator->list, iterator->index, pitem);
}
int
iterator_is_done (iterator_t iterator)
{
size_t count;
int status;
if (iterator == NULL)
return 1;
status = list_count (iterator->list, &count);
if (status != 0)
return 1;
return (iterator->index >= count);
}
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