1 f7012583 2003-11-25 devnull #ifndef _BIO_H_
 2 f7012583 2003-11-25 devnull #define _BIO_H_ 1
 3 f7012583 2003-11-25 devnull #if defined(__cplusplus)
 4 f7012583 2003-11-25 devnull extern "C" { 
 5 f7012583 2003-11-25 devnull #endif
 6 b2cfc4e2 2003-09-30 devnull 
 7 1a0954ab 2005-01-04 devnull AUTOLIB(bio)
 8 1a0954ab 2005-01-04 devnull 
 9 b2cfc4e2 2003-09-30 devnull #include <sys/types.h>	/* for off_t */
10 b2cfc4e2 2003-09-30 devnull #include <fcntl.h>	/* for O_RDONLY, O_WRONLY */
11 b2cfc4e2 2003-09-30 devnull 
12 b2cfc4e2 2003-09-30 devnull typedef	struct	Biobuf	Biobuf;
13 b2cfc4e2 2003-09-30 devnull 
14 b2cfc4e2 2003-09-30 devnull enum
15 b2cfc4e2 2003-09-30 devnull {
16 b2cfc4e2 2003-09-30 devnull 	Bsize		= 8*1024,
17 b2cfc4e2 2003-09-30 devnull 	Bungetsize	= 4,		/* space for ungetc */
18 b2cfc4e2 2003-09-30 devnull 	Bmagic		= 0x314159,
19 b2cfc4e2 2003-09-30 devnull 	Beof		= -1,
20 b2cfc4e2 2003-09-30 devnull 	Bbad		= -2,
21 b2cfc4e2 2003-09-30 devnull 
22 b2cfc4e2 2003-09-30 devnull 	Binactive	= 0,		/* states */
23 b2cfc4e2 2003-09-30 devnull 	Bractive,
24 b2cfc4e2 2003-09-30 devnull 	Bwactive,
25 b2cfc4e2 2003-09-30 devnull 	Bracteof,
26 b2cfc4e2 2003-09-30 devnull 
27 b2cfc4e2 2003-09-30 devnull 	Bend
28 b2cfc4e2 2003-09-30 devnull };
29 b2cfc4e2 2003-09-30 devnull 
30 b2cfc4e2 2003-09-30 devnull struct	Biobuf
31 b2cfc4e2 2003-09-30 devnull {
32 b2cfc4e2 2003-09-30 devnull 	int	icount;		/* neg num of bytes at eob */
33 b2cfc4e2 2003-09-30 devnull 	int	ocount;		/* num of bytes at bob */
34 b2cfc4e2 2003-09-30 devnull 	int	rdline;		/* num of bytes after rdline */
35 669250d1 2003-12-03 devnull 	int	runesize;	/* num of bytes of last getrune */
36 b2cfc4e2 2003-09-30 devnull 	int	state;		/* r/w/inactive */
37 b2cfc4e2 2003-09-30 devnull 	int	fid;		/* open file */
38 b2cfc4e2 2003-09-30 devnull 	int	flag;		/* magic if malloc'ed */
39 b2cfc4e2 2003-09-30 devnull 	off_t	offset;		/* offset of buffer in file */
40 b2cfc4e2 2003-09-30 devnull 	int	bsize;		/* size of buffer */
41 b2cfc4e2 2003-09-30 devnull 	unsigned char*	bbuf;		/* pointer to beginning of buffer */
42 b2cfc4e2 2003-09-30 devnull 	unsigned char*	ebuf;		/* pointer to end of buffer */
43 b2cfc4e2 2003-09-30 devnull 	unsigned char*	gbuf;		/* pointer to good data in buf */
44 b2cfc4e2 2003-09-30 devnull 	unsigned char	b[Bungetsize+Bsize];
45 b2cfc4e2 2003-09-30 devnull };
46 b2cfc4e2 2003-09-30 devnull 
47 b2cfc4e2 2003-09-30 devnull #define	BGETC(bp)\
48 b2cfc4e2 2003-09-30 devnull 	((bp)->icount?(bp)->bbuf[(bp)->bsize+(bp)->icount++]:Bgetc((bp)))
49 b2cfc4e2 2003-09-30 devnull #define	BPUTC(bp,c)\
50 b2cfc4e2 2003-09-30 devnull 	((bp)->ocount?(bp)->bbuf[(bp)->bsize+(bp)->ocount++]=(c),0:Bputc((bp),(c)))
51 b2cfc4e2 2003-09-30 devnull #define	BOFFSET(bp)\
52 b2cfc4e2 2003-09-30 devnull 	(((bp)->state==Bractive)?\
53 b2cfc4e2 2003-09-30 devnull 		(bp)->offset + (bp)->icount:\
54 b2cfc4e2 2003-09-30 devnull 	(((bp)->state==Bwactive)?\
55 b2cfc4e2 2003-09-30 devnull 		(bp)->offset + ((bp)->bsize + (bp)->ocount):\
56 b2cfc4e2 2003-09-30 devnull 		-1))
57 b2cfc4e2 2003-09-30 devnull #define	BLINELEN(bp)\
58 b2cfc4e2 2003-09-30 devnull 	(bp)->rdline
59 b2cfc4e2 2003-09-30 devnull #define	BFILDES(bp)\
60 b2cfc4e2 2003-09-30 devnull 	(bp)->fid
61 b2cfc4e2 2003-09-30 devnull 
62 b2cfc4e2 2003-09-30 devnull int	Bbuffered(Biobuf*);
63 986b36bc 2003-11-23 devnull Biobuf*	Bfdopen(int, int);
64 b2cfc4e2 2003-09-30 devnull int	Bfildes(Biobuf*);
65 b2cfc4e2 2003-09-30 devnull int	Bflush(Biobuf*);
66 b2cfc4e2 2003-09-30 devnull int	Bgetc(Biobuf*);
67 b2cfc4e2 2003-09-30 devnull int	Bgetd(Biobuf*, double*);
68 623ae4f9 2004-12-28 devnull long	Bgetrune(Biobuf*);
69 b2cfc4e2 2003-09-30 devnull int	Binit(Biobuf*, int, int);
70 b2cfc4e2 2003-09-30 devnull int	Binits(Biobuf*, int, int, unsigned char*, int);
71 b2cfc4e2 2003-09-30 devnull int	Blinelen(Biobuf*);
72 b2cfc4e2 2003-09-30 devnull off_t	Boffset(Biobuf*);
73 b2cfc4e2 2003-09-30 devnull Biobuf*	Bopen(char*, int);
74 b2cfc4e2 2003-09-30 devnull int	Bprint(Biobuf*, char*, ...);
75 b2cfc4e2 2003-09-30 devnull int	Bputc(Biobuf*, int);
76 623ae4f9 2004-12-28 devnull int	Bputrune(Biobuf*, long);
77 b2cfc4e2 2003-09-30 devnull void*	Brdline(Biobuf*, int);
78 623ae4f9 2004-12-28 devnull char*	Brdstr(Biobuf*, int, int);
79 b2cfc4e2 2003-09-30 devnull long	Bread(Biobuf*, void*, long);
80 b2cfc4e2 2003-09-30 devnull off_t	Bseek(Biobuf*, off_t, int);
81 b2cfc4e2 2003-09-30 devnull int	Bterm(Biobuf*);
82 b2cfc4e2 2003-09-30 devnull int	Bungetc(Biobuf*);
83 522b0689 2003-09-30 devnull int	Bungetrune(Biobuf*);
84 b2cfc4e2 2003-09-30 devnull long	Bwrite(Biobuf*, void*, long);
85 623ae4f9 2004-12-28 devnull int	Bvprint(Biobuf*, char*, va_list);
86 b2cfc4e2 2003-09-30 devnull 
87 f7012583 2003-11-25 devnull #if defined(__cplusplus)
88 f7012583 2003-11-25 devnull }
89 b2cfc4e2 2003-09-30 devnull #endif
90 f7012583 2003-11-25 devnull #endif