#ifndef NONBLOCK_H
#define NONBLOCK_H

#include <sys/types.h>
#include "fd.h"

typedef struct buffer_s
{
	fd_t *in_fd, *out_fd;
	list_t in_fd_list, out_fd_list;
	notifier_t readok, writeok, in_misc, out_misc;
	int offset, used, size, eof;
	int in_error, in_active, out_error, out_active;
	int chunk_size;
	char *buffer;
	void *arg;

	void (*notify_data)(struct buffer_s *this);
	void (*notify_full)(struct buffer_s *this);
	void (*notify_empty)(struct buffer_s *this);
	void (*notify_eof)(struct buffer_s *this);
	void (*notify_readerror)(struct buffer_s *this);
	void (*notify_writeerror)(struct buffer_s *this);
	void (*notify_finished)(struct buffer_s *this);
} buffer_t;

buffer_t *buffer_alloc(void);
extern void buffer_init_incoming(buffer_t *buf, fd_t *fd, int size, void *arg);
extern void buffer_init_outgoing(buffer_t *buf, fd_t *fd, int size, void *arg);
extern void buffer_init_passthrough(buffer_t *buf, 
	fd_t *in_fd, fd_t *out_fd, int size, void *arg);

extern int buffer_extract_chars(buffer_t *buf, char *dst, int size);
extern int buffer_append_chars(buffer_t *buf, char *src, int size);

#endif