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/*
* IRC - Internet Relay Chat, include/dbuf.h
* Copyright (C) 1990 Markku Savela
*
* 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, 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef INCLUDED_dbuf_h
#define INCLUDED_dbuf_h
#ifndef INCLUDED_sys_types_h
#include <sys/types.h> /* size_t */
#define INCLUDED_sys_types_h
#endif
/*
* These two globals should be considered read only
*/
extern int DBufAllocCount; /* GLOBAL - count of dbufs allocated */
extern int DBufUsedCount; /* GLOBAL - count of dbufs in use */
struct DBufBuffer;
struct DBuf {
size_t length; /* Current number of bytes stored */
struct DBufBuffer *head; /* First data buffer, if length > 0 */
struct DBufBuffer *tail; /* last data buffer, if length > 0 */
};
/*
* DBufLength - Returns the current number of bytes stored into the buffer.
*/
#define DBufLength(dyn) ((dyn)->length)
/*
* DBufClear - Scratch the current content of the buffer.
* Release all allocated buffers and make it empty.
*/
#define DBufClear(dyn) dbuf_delete((dyn), DBufLength(dyn))
/*
* Prototypes
*/
extern void dbuf_delete(struct DBuf *dyn, size_t length);
extern int dbuf_put(struct DBuf *dyn, const char *buf, size_t length);
extern const char *dbuf_map(const struct DBuf *dyn, size_t *length);
extern size_t dbuf_get(struct DBuf *dyn, char *buf, size_t length);
extern size_t dbuf_getmsg(struct DBuf *dyn, char *buf, size_t length);
extern void dbuf_count_memory(size_t *allocated, size_t *used);
#endif /* INCLUDED_dbuf_h */
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