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/*
* libmowgli: A collection of useful routines for programming.
* mowgli_object_metadata.c: Object metadata.
*
* Copyright (c) 2007 William Pitcock <nenolod -at- sacredspiral.co.uk>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice is present in all copies.
*
* 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 "mowgli.h"
void mowgli_object_metadata_associate(mowgli_object_t *self, const char *key, void *value)
{
mowgli_object_metadata_entry_t *e = NULL;
mowgli_node_t *n;
if (self == NULL)
mowgli_throw_exception(mowgli.object_metadata.invalid_object_exception);
if (key == NULL)
mowgli_throw_exception(mowgli.null_pointer_exception);
MOWGLI_LIST_FOREACH(n, self->metadata.head)
{
e = (mowgli_object_metadata_entry_t *) n->data;
if (!strcasecmp(e->name, key))
break;
}
if (e != NULL)
{
e->data = value;
return;
}
e = mowgli_alloc(sizeof(mowgli_object_metadata_entry_t));
e->name = strdup(key);
e->data = value;
mowgli_node_add(e, mowgli_node_create(), &self->metadata);
}
void mowgli_object_metadata_dissociate(mowgli_object_t *self, const char *key)
{
mowgli_object_metadata_entry_t *e;
mowgli_node_t *n, *tn;
if (self == NULL)
mowgli_throw_exception(mowgli.object_metadata.invalid_object_exception);
if (key == NULL)
mowgli_throw_exception(mowgli.null_pointer_exception);
MOWGLI_LIST_FOREACH_SAFE(n, tn, self->metadata.head)
{
e = (mowgli_object_metadata_entry_t *) n->data;
if (!strcasecmp(e->name, key))
{
mowgli_node_delete(n, &self->metadata);
mowgli_node_free(n);
mowgli_free(e->name);
mowgli_free(e);
}
}
}
void *mowgli_object_metadata_retrieve(mowgli_object_t *self, const char *key)
{
mowgli_object_metadata_entry_t *e;
mowgli_node_t *n;
if (self == NULL)
mowgli_throw_exception_val(mowgli.object_metadata.invalid_object_exception, NULL);
if (key == NULL)
mowgli_throw_exception_val(mowgli.null_pointer_exception, NULL);
MOWGLI_LIST_FOREACH(n, self->metadata.head)
{
e = (mowgli_object_metadata_entry_t *) n->data;
if (!strcasecmp(e->name, key))
return e->data;
}
return NULL;
}
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