include/event2/keyvalq_struct.h

0001 /*
0002  * Copyright (c) 2000-2007 Niels Provos <provos@citi.umich.edu>
0003  * Copyright (c) 2007-2012 Niels Provos and Nick Mathewson
0004  *
0005  * Redistribution and use in source and binary forms, with or without
0006  * modification, are permitted provided that the following conditions
0007  * are met:
0008  * 1. Redistributions of source code must retain the above copyright
0009  *    notice, this list of conditions and the following disclaimer.
0010  * 2. Redistributions in binary form must reproduce the above copyright
0011  *    notice, this list of conditions and the following disclaimer in the
0012  *    documentation and/or other materials provided with the distribution.
0013  * 3. The name of the author may not be used to endorse or promote products
0014  *    derived from this software without specific prior written permission.
0015  *
0016  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
0017  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
0018  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
0019  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
0020  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
0021  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
0022  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
0023  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
0024  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
0025  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
0026  */
0027 #ifndef EVENT2_KEYVALQ_STRUCT_H_INCLUDED_
0028 #define EVENT2_KEYVALQ_STRUCT_H_INCLUDED_
0029
0030 #ifdef __cplusplus
0031 extern "C" {
0032 #endif
0033
0034 /* Fix so that people don't have to run with <sys/queue.h> */
0035 /* XXXX This code is duplicated with event_struct.h */
0036 #ifndef TAILQ_ENTRY
0037 #define EVENT_DEFINED_TQENTRY_
0038 #define TAILQ_ENTRY(type)                       \
0039 struct {                                \
0040     struct type *tqe_next;  /* next element */          \
0041     struct type **tqe_prev; /* address of previous next element */  \
0042 }
0043 #endif /* !TAILQ_ENTRY */
0044
0045 #ifndef TAILQ_HEAD
0046 #define EVENT_DEFINED_TQHEAD_
0047 #define TAILQ_HEAD(name, type)          \
0048 struct name {                   \
0049     struct type *tqh_first;         \
0050     struct type **tqh_last;         \
0051 }
0052 #endif
0053
0054 /*
0055  * Key-Value pairs.  Can be used for HTTP headers but also for
0056  * query argument parsing.
0057  */
0058 struct evkeyval {
0059     TAILQ_ENTRY(evkeyval) next;
0060
0061     char *key;
0062     char *value;
0063 };
0064
0065 TAILQ_HEAD (evkeyvalq, evkeyval);
0066
0067 /* XXXX This code is duplicated with event_struct.h */
0068 #ifdef EVENT_DEFINED_TQENTRY_
0069 #undef TAILQ_ENTRY
0070 #endif
0071
0072 #ifdef EVENT_DEFINED_TQHEAD_
0073 #undef TAILQ_HEAD
0074 #endif
0075
0076 #ifdef __cplusplus
0077 }
0078 #endif
0079
0080 #endif