mirror of
https://github.com/matrix-construct/construct
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61b517ca3c
* To benefit from the precompiled-header (PCH) it MUST provide "the first C token." Advantages: Never worry about the include stack again. Remember, this means one less thing for random module developers, community people learning C++, and new developers to deal with. It should reduce the learning curve and barrier for participation. Disadvantages: Makes overall compilation a bit slower, especially without any additional work to improve it again. There are several opportunities, places where the PCH is probably being ignored, etc that can be addressed.
102 lines
3.5 KiB
C++
102 lines
3.5 KiB
C++
/*
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* charybdis - an advanced ircd.
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* Copyright (c) 2016 William Pitcock <nenolod@dereferenced.org>.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice is present in all copies.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#define HAVE_IRCD_MSGBUF_H
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#define MAXPARA (15)
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#ifdef __cplusplus
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namespace ircd {
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/* a key-value structure for each message tag. */
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struct MsgTag {
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const char *key; /* the key of the tag (must be set) */
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const char *value; /* the value of the tag or NULL */
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unsigned int capmask; /* the capability mask this tag belongs to (used only when sending) */
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};
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struct MsgBuf {
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size_t n_tags; /* the number of tags in the MsgBuf */
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struct MsgTag tags[MAXPARA]; /* the tags themselves, upto MAXPARA tags available */
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const char *origin; /* the origin of the message (or NULL) */
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const char *target; /* the target of the message (either NULL, or custom defined) */
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const char *cmd; /* the cmd/verb of the message (either NULL, or para[0]) */
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size_t parselen; /* the length of the message */
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size_t n_para; /* the number of parameters (always at least 1 if a full message) */
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const char *para[MAXPARA]; /* parameters vector (starting with cmd as para[0]) */
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};
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/*
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* parse a message into a MsgBuf.
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* returns 0 on success, 1 on error.
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*/
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int msgbuf_parse(struct MsgBuf *msgbuf, char *line);
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/*
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* unparse a pure MsgBuf into a buffer.
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* if origin is NULL, me.name will be used.
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* cmd may not be NULL.
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* returns 0 on success, 1 on error.
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*/
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int msgbuf_unparse(char *buf, size_t buflen, struct MsgBuf *msgbuf, unsigned int capmask);
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/*
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* unparse a MsgBuf header plus payload into a buffer.
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* if origin is NULL, me.name will be used.
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* cmd may not be NULL.
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* returns 0 on success, 1 on error.
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*/
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int msgbuf_unparse_fmt(char *buf, size_t buflen, struct MsgBuf *head, unsigned int capmask, const char *fmt, ...) AFP(5, 6);
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int msgbuf_vunparse_fmt(char *buf, size_t buflen, struct MsgBuf *head, unsigned int capmask, const char *fmt, va_list va);
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void msgbuf_unparse_prefix(char *buf, size_t buflen, struct MsgBuf *msgbuf, unsigned int capmask);
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static inline void
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msgbuf_init(struct MsgBuf *msgbuf)
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{
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memset(msgbuf, 0, sizeof(*msgbuf));
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}
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static inline void
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msgbuf_append_tag(struct MsgBuf *msgbuf, const char *key, const char *value, unsigned int capmask)
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{
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s_assert(msgbuf->n_tags < MAXPARA);
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msgbuf->tags[msgbuf->n_tags].key = key;
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msgbuf->tags[msgbuf->n_tags].value = value;
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msgbuf->tags[msgbuf->n_tags].capmask = capmask;
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msgbuf->n_tags++;
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}
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static inline void
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msgbuf_append_para(struct MsgBuf *msgbuf, const char *para)
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{
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s_assert(msgbuf->n_para < MAXPARA);
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msgbuf->para[msgbuf->n_para] = para;
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msgbuf->n_para++;
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}
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} // namespace ircd
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#endif // __cplusplus
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