1 /*
2  * This is free and unencumbered software released into the public domain.
3  *
4  * Anyone is free to copy, modify, publish, use, compile, sell, or
5  * distribute this software, either in source code form or as a compiled
6  * binary, for any purpose, commercial or non-commercial, and by any
7  * means.
8  *
9  * In jurisdictions that recognize copyright laws, the author or authors
10  * of this software dedicate any and all copyright interest in the
11  * software to the public domain. We make this dedication for the benefit
12  * of the public at large and to the detriment of our heirs and
13  * successors. We intend this dedication to be an overt act of
14  * relinquishment in perpetuity of all present and future rights to this
15  * software under copyright law.
16  *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20  * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23  * OTHER DEALINGS IN THE SOFTWARE.
24  */
25 
26 #define BIO_CHUNK	1024
27 struct buffer {
28 	uint8_t		*buf;
29 	size_t		 len;
30 	size_t		 cap;
31 };
32 
33 struct bufio {
34 	int		 fd;
35 	int		 chunked;
36 	struct buffer	 wbuf;
37 	struct buffer	 rbuf;
38 };
39 
40 int	buf_init(struct buffer *);
41 int	buf_write(struct buffer *, const void *, size_t);
42 int	buf_has_line(struct buffer *, const char *);
43 void	buf_drain(struct buffer *, size_t);
44 void	buf_drain_line(struct buffer *, const char *);
45 void	buf_free(struct buffer *);
46 
47 int	bufio_init(struct bufio *);
48 void	bufio_free(struct bufio *);
49 int	bufio_reset(struct bufio *);
50 void	bufio_set_fd(struct bufio *, int);
51 void	bufio_set_chunked(struct bufio *, int);
52 short	bufio_pollev(struct bufio *);
53 ssize_t	bufio_read(struct bufio *);
54 size_t	bufio_drain(struct bufio *, void *, size_t);
55 ssize_t	bufio_write(struct bufio *);
56 int	bufio_compose(struct bufio *, const void *, size_t);
57 int	bufio_compose_str(struct bufio *, const char *);
58 int	bufio_compose_fmt(struct bufio *, const char *, ...)
59 	    __attribute__((__format__ (printf, 2, 3)));