/*
 * This is free and unencumbered software released into the public domain.
 *
 * Anyone is free to copy, modify, publish, use, compile, sell, or
 * distribute this software, either in source code form or as a compiled
 * binary, for any purpose, commercial or non-commercial, and by any
 * means.
 *
 * In jurisdictions that recognize copyright laws, the author or authors
 * of this software dedicate any and all copyright interest in the
 * software to the public domain. We make this dedication for the benefit
 * of the public at large and to the detriment of our heirs and
 * successors. We intend this dedication to be an overt act of
 * relinquishment in perpetuity of all present and future rights to this
 * software under copyright law.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */

#define BIO_CHUNK	1024
struct buffer {
	uint8_t		*buf;
	size_t		 len;
	size_t		 cap;
};

struct bufio {
	int		 fd;
	int		 chunked;
	struct buffer	 wbuf;
	struct buffer	 rbuf;
};

int	buf_init(struct buffer *);
int	buf_write(struct buffer *, const void *, size_t);
int	buf_has_line(struct buffer *, const char *);
void	buf_drain(struct buffer *, size_t);
void	buf_drain_line(struct buffer *, const char *);
void	buf_free(struct buffer *);

int	bufio_init(struct bufio *);
void	bufio_free(struct bufio *);
int	bufio_reset(struct bufio *);
void	bufio_set_fd(struct bufio *, int);
void	bufio_set_chunked(struct bufio *, int);
short	bufio_pollev(struct bufio *);
ssize_t	bufio_read(struct bufio *);
size_t	bufio_drain(struct bufio *, void *, size_t);
ssize_t	bufio_write(struct bufio *);
int	bufio_compose(struct bufio *, const void *, size_t);
int	bufio_compose_str(struct bufio *, const char *);
int	bufio_compose_fmt(struct bufio *, const char *, ...)
	    __attribute__((__format__ (printf, 2, 3)));