xref: /freebsd/contrib/libevent/include/event2/keyvalq_struct.h (revision 5f4c09dd85bff675e0ca63c55ea3c517e0fddfcc)
1 /*
2  * Copyright (c) 2000-2007 Niels Provos <provos@citi.umich.edu>
3  * Copyright (c) 2007-2012 Niels Provos and Nick Mathewson
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 3. The name of the author may not be used to endorse or promote products
14  *    derived from this software without specific prior written permission.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26  */
27 #ifndef EVENT2_KEYVALQ_STRUCT_H_INCLUDED_
28 #define EVENT2_KEYVALQ_STRUCT_H_INCLUDED_
29 
30 #ifdef __cplusplus
31 extern "C" {
32 #endif
33 
34 /* Fix so that people don't have to run with <sys/queue.h> */
35 /* XXXX This code is duplicated with event_struct.h */
36 #ifndef TAILQ_ENTRY
37 #define EVENT_DEFINED_TQENTRY_
38 #define TAILQ_ENTRY(type)						\
39 struct {								\
40 	struct type *tqe_next;	/* next element */			\
41 	struct type **tqe_prev;	/* address of previous next element */	\
42 }
43 #endif /* !TAILQ_ENTRY */
44 
45 #ifndef TAILQ_HEAD
46 #define EVENT_DEFINED_TQHEAD_
47 #define TAILQ_HEAD(name, type)			\
48 struct name {					\
49 	struct type *tqh_first;			\
50 	struct type **tqh_last;			\
51 }
52 #endif
53 
54 /*
55  * Key-Value pairs.  Can be used for HTTP headers but also for
56  * query argument parsing.
57  */
58 struct evkeyval {
59 	TAILQ_ENTRY(evkeyval) next;
60 
61 	char *key;
62 	char *value;
63 };
64 
65 TAILQ_HEAD (evkeyvalq, evkeyval);
66 
67 /* XXXX This code is duplicated with event_struct.h */
68 #ifdef EVENT_DEFINED_TQENTRY_
69 #undef TAILQ_ENTRY
70 #endif
71 
72 #ifdef EVENT_DEFINED_TQHEAD_
73 #undef TAILQ_HEAD
74 #endif
75 
76 #ifdef __cplusplus
77 }
78 #endif
79 
80 #endif
81