xref: /freebsd/contrib/libevent/include/event2/keyvalq_struct.h (revision c6879c6c14eedbd060ba588a3129a6c60ebbe783)
1*c43e99fdSEd Maste /*
2*c43e99fdSEd Maste  * Copyright (c) 2000-2007 Niels Provos <provos@citi.umich.edu>
3*c43e99fdSEd Maste  * Copyright (c) 2007-2012 Niels Provos and Nick Mathewson
4*c43e99fdSEd Maste  *
5*c43e99fdSEd Maste  * Redistribution and use in source and binary forms, with or without
6*c43e99fdSEd Maste  * modification, are permitted provided that the following conditions
7*c43e99fdSEd Maste  * are met:
8*c43e99fdSEd Maste  * 1. Redistributions of source code must retain the above copyright
9*c43e99fdSEd Maste  *    notice, this list of conditions and the following disclaimer.
10*c43e99fdSEd Maste  * 2. Redistributions in binary form must reproduce the above copyright
11*c43e99fdSEd Maste  *    notice, this list of conditions and the following disclaimer in the
12*c43e99fdSEd Maste  *    documentation and/or other materials provided with the distribution.
13*c43e99fdSEd Maste  * 3. The name of the author may not be used to endorse or promote products
14*c43e99fdSEd Maste  *    derived from this software without specific prior written permission.
15*c43e99fdSEd Maste  *
16*c43e99fdSEd Maste  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17*c43e99fdSEd Maste  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18*c43e99fdSEd Maste  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19*c43e99fdSEd Maste  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20*c43e99fdSEd Maste  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21*c43e99fdSEd Maste  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22*c43e99fdSEd Maste  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23*c43e99fdSEd Maste  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24*c43e99fdSEd Maste  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25*c43e99fdSEd Maste  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26*c43e99fdSEd Maste  */
27*c43e99fdSEd Maste #ifndef EVENT2_KEYVALQ_STRUCT_H_INCLUDED_
28*c43e99fdSEd Maste #define EVENT2_KEYVALQ_STRUCT_H_INCLUDED_
29*c43e99fdSEd Maste 
30*c43e99fdSEd Maste #ifdef __cplusplus
31*c43e99fdSEd Maste extern "C" {
32*c43e99fdSEd Maste #endif
33*c43e99fdSEd Maste 
34*c43e99fdSEd Maste /* Fix so that people don't have to run with <sys/queue.h> */
35*c43e99fdSEd Maste /* XXXX This code is duplicated with event_struct.h */
36*c43e99fdSEd Maste #ifndef TAILQ_ENTRY
37*c43e99fdSEd Maste #define EVENT_DEFINED_TQENTRY_
38*c43e99fdSEd Maste #define TAILQ_ENTRY(type)						\
39*c43e99fdSEd Maste struct {								\
40*c43e99fdSEd Maste 	struct type *tqe_next;	/* next element */			\
41*c43e99fdSEd Maste 	struct type **tqe_prev;	/* address of previous next element */	\
42*c43e99fdSEd Maste }
43*c43e99fdSEd Maste #endif /* !TAILQ_ENTRY */
44*c43e99fdSEd Maste 
45*c43e99fdSEd Maste #ifndef TAILQ_HEAD
46*c43e99fdSEd Maste #define EVENT_DEFINED_TQHEAD_
47*c43e99fdSEd Maste #define TAILQ_HEAD(name, type)			\
48*c43e99fdSEd Maste struct name {					\
49*c43e99fdSEd Maste 	struct type *tqh_first;			\
50*c43e99fdSEd Maste 	struct type **tqh_last;			\
51*c43e99fdSEd Maste }
52*c43e99fdSEd Maste #endif
53*c43e99fdSEd Maste 
54*c43e99fdSEd Maste /*
55*c43e99fdSEd Maste  * Key-Value pairs.  Can be used for HTTP headers but also for
56*c43e99fdSEd Maste  * query argument parsing.
57*c43e99fdSEd Maste  */
58*c43e99fdSEd Maste struct evkeyval {
59*c43e99fdSEd Maste 	TAILQ_ENTRY(evkeyval) next;
60*c43e99fdSEd Maste 
61*c43e99fdSEd Maste 	char *key;
62*c43e99fdSEd Maste 	char *value;
63*c43e99fdSEd Maste };
64*c43e99fdSEd Maste 
65*c43e99fdSEd Maste TAILQ_HEAD (evkeyvalq, evkeyval);
66*c43e99fdSEd Maste 
67*c43e99fdSEd Maste /* XXXX This code is duplicated with event_struct.h */
68*c43e99fdSEd Maste #ifdef EVENT_DEFINED_TQENTRY_
69*c43e99fdSEd Maste #undef TAILQ_ENTRY
70*c43e99fdSEd Maste #endif
71*c43e99fdSEd Maste 
72*c43e99fdSEd Maste #ifdef EVENT_DEFINED_TQHEAD_
73*c43e99fdSEd Maste #undef TAILQ_HEAD
74*c43e99fdSEd Maste #endif
75*c43e99fdSEd Maste 
76*c43e99fdSEd Maste #ifdef __cplusplus
77*c43e99fdSEd Maste }
78*c43e99fdSEd Maste #endif
79*c43e99fdSEd Maste 
80*c43e99fdSEd Maste #endif
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