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/* $Id: buffer.h,v 1.2 2000-03-31 20:09:19 rjkaes Exp $
*
* See 'buffer.c' for a detailed description.
*
* Copyright (C) 1999 Robert James Kaes (rjkaes@flarenet.com)
*
* 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.
*/
#ifndef __BUFFER_H_
#define __BUFFER_H_ 1
#define MAXBUFFSIZE 20480
struct bufline_s {
unsigned char *string; /* the actual string of data */
struct bufline_s *next; /* pointer to next in linked list */
unsigned int length; /* length of the string of data */
unsigned int pos; /* start sending from this offset */
};
struct buffer_s {
struct bufline_s *head; /* top of the buffer */
struct bufline_s *tail; /* bottom of the buffer */
unsigned long int size; /* total size of the buffer */
unsigned char *working_string; /* needed for building a new line incr. */
unsigned int working_length; /* length of working line */
};
#define buffer_head(x) (((struct buffer_s *)(x))->head)
#define buffer_tail(x) (((struct buffer_s *)(x))->tail)
#define buffer_size(x) (((struct buffer_s *)(x))->size)
/* Create and delete buffers */
extern struct buffer_s *new_buffer(void);
extern void delete_buffer(struct buffer_s *buffptr);
/* Operate on the end of the list */
extern struct bufline_s *push_buffer(struct buffer_s *buffptr,
unsigned char *data, unsigned int length);
extern struct bufline_s *pop_buffer(struct buffer_s *buffptr);
/* Operate on the head of the list */
extern struct bufline_s *unshift_buffer(struct buffer_s *buffptr,
unsigned char *data,
unsigned int length);
extern struct bufline_s *shift_buffer(struct buffer_s *buffptr);
/* Free a buffer line */
extern void free_line(struct bufline_s *line);
/* Read/Write the buffer to a socket */
extern int readbuff(int fd, struct buffer_s *buffptr);
extern int writebuff(int fd, struct buffer_s *buffptr);
#endif /* __BUFFER_H_ */
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