ircd-hybrid/src/metadata.c

/*
 *  ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
 *  metadata.c: metadata system
 *
 *  Copyright (C) 2005 by the past and present ircd coders, and others.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 *  USA
 *
 *  $Id$
 */

#include "stdinc.h"
#include "metadata.h"

struct Metadata *
add_metadata_str(dlink_list *list, char *key, char *strval)
{
        struct Metadata *mdptr;

        assert(key != NULL);
        assert(strval != NULL);

        if (find_metadata(list, key) != NULL)
                return NULL;

        mdptr = MyMalloc(sizeof(struct Metadata));
        memset(mdptr, 0, sizeof(struct Metadata));
        DupString(key, mdptr->key);
        DupString(strval, mdptr->u.strval);

        dlinkAdd(mdptr, make_dlink_node(), list);

        return mdptr;
}

struct Metadata *
add_metadata_int(dlink_list *list, char *key, int intval)
{
        struct Metadata *mdptr;

        assert(key != NULL);

        if (find_metadata(list, key) != NULL)
                return NULL;

        mdptr = MyMalloc(sizeof(struct Metadata));
        memset(mdptr, 0, sizeof(struct Metadata));
        DupString(key, mdptr->key);
        mdptr->u.intval = intval;

        dlinkAdd(mdptr, make_dlink_node(), list);

        return mdptr;
}

struct Metadata *
find_metadata(dlink_list *list, char *key)
{
        dlink_node *n;

        assert(key != NULL);

        DLINK_FOREACH(n, list->head)
        {
                struct Metadata *md = (struct Metadata *) n->data;

                if (!irccmp(key, md->key))
                        return md;
        }

        return NULL;
}

void
destroy_metadata(dlink_list *list, char *key)
{
        struct Metadata *md;

        assert(key != NULL);

        if ((md = find_metadata(list, key)) == NULL)
                return;

        if (md->u.strval != NULL)
                MyFree(md->u.strval);

        dlinkFindDelete(list, md);

        MyFree(md);
}
Revision:	296
Committed:	Mon Dec 5 20:41:51 2005 UTC (20 years, 8 months ago) by nenolod
Content type:	text/x-csrc
File size:	2284 byte(s)
Log Message:	- Add a simple metadata API for extending channel/client/whatever structs via adding a single dlink_list to the structure you wish to make extensible. Reviewed by db.
#	User	Rev	Content
1	nenolod	296	/*
2			* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3			* metadata.c: metadata system
4			*
5			* Copyright (C) 2005 by the past and present ircd coders, and others.
6			*
7			* This program is free software; you can redistribute it and/or modify
8			* it under the terms of the GNU General Public License as published by
9			* the Free Software Foundation; either version 2 of the License, or
10			* (at your option) any later version.
11			*
12			* This program is distributed in the hope that it will be useful,
13			* but WITHOUT ANY WARRANTY; without even the implied warranty of
14			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15			* GNU General Public License for more details.
16			*
17			* You should have received a copy of the GNU General Public License
18			* along with this program; if not, write to the Free Software
19			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20			* USA
21			*
22			* $Id$
23			*/
24
25			#include "stdinc.h"
26			#include "metadata.h"
27
28			struct Metadata *
29			add_metadata_str(dlink_list list, char key, char *strval)
30			{
31			struct Metadata *mdptr;
32
33			assert(key != NULL);
34			assert(strval != NULL);
35
36			if (find_metadata(list, key) != NULL)
37			return NULL;
38
39			mdptr = MyMalloc(sizeof(struct Metadata));
40			memset(mdptr, 0, sizeof(struct Metadata));
41			DupString(key, mdptr->key);
42			DupString(strval, mdptr->u.strval);
43
44			dlinkAdd(mdptr, make_dlink_node(), list);
45
46			return mdptr;
47			}
48
49			struct Metadata *
50			add_metadata_int(dlink_list list, char key, int intval)
51			{
52			struct Metadata *mdptr;
53
54			assert(key != NULL);
55
56			if (find_metadata(list, key) != NULL)
57			return NULL;
58
59			mdptr = MyMalloc(sizeof(struct Metadata));
60			memset(mdptr, 0, sizeof(struct Metadata));
61			DupString(key, mdptr->key);
62			mdptr->u.intval = intval;
63
64			dlinkAdd(mdptr, make_dlink_node(), list);
65
66			return mdptr;
67			}
68
69			struct Metadata *
70			find_metadata(dlink_list list, char key)
71			{
72			dlink_node *n;
73
74			assert(key != NULL);
75
76			DLINK_FOREACH(n, list->head)
77			{
78			struct Metadata md = (struct Metadata ) n->data;
79
80			if (!irccmp(key, md->key))
81			return md;
82			}
83
84			return NULL;
85			}
86
87			void
88			destroy_metadata(dlink_list list, char key)
89			{
90			struct Metadata *md;
91
92			assert(key != NULL);
93
94			if ((md = find_metadata(list, key)) == NULL)
95			return;
96
97			if (md->u.strval != NULL)
98			MyFree(md->u.strval);
99
100			dlinkFindDelete(list, md);
101
102			MyFree(md);
103			}