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 78e51a8c 2005-01-14 devnull #ifdef AUTOLIB
 8 1a0954ab 2005-01-04 devnull AUTOLIB(bio)
 9 78e51a8c 2005-01-14 devnull #endif
10 1a0954ab 2005-01-04 devnull 
11 b2cfc4e2 2003-09-30 devnull #include <fcntl.h>	/* for O_RDONLY, O_WRONLY */
12 b2cfc4e2 2003-09-30 devnull 
13 b2cfc4e2 2003-09-30 devnull typedef	struct	Biobuf	Biobuf;
14 b2cfc4e2 2003-09-30 devnull 
15 b2cfc4e2 2003-09-30 devnull enum
16 b2cfc4e2 2003-09-30 devnull {
17 b2cfc4e2 2003-09-30 devnull 	Bsize		= 8*1024,
18 b2cfc4e2 2003-09-30 devnull 	Bungetsize	= 4,		/* space for ungetc */
19 b2cfc4e2 2003-09-30 devnull 	Bmagic		= 0x314159,
20 b2cfc4e2 2003-09-30 devnull 	Beof		= -1,
21 b2cfc4e2 2003-09-30 devnull 	Bbad		= -2,
22 b2cfc4e2 2003-09-30 devnull 
23 b2cfc4e2 2003-09-30 devnull 	Binactive	= 0,		/* states */
24 b2cfc4e2 2003-09-30 devnull 	Bractive,
25 b2cfc4e2 2003-09-30 devnull 	Bwactive,
26 b2cfc4e2 2003-09-30 devnull 	Bracteof,
27 b2cfc4e2 2003-09-30 devnull 
28 b2cfc4e2 2003-09-30 devnull 	Bend
29 b2cfc4e2 2003-09-30 devnull };
30 b2cfc4e2 2003-09-30 devnull 
31 b2cfc4e2 2003-09-30 devnull struct	Biobuf
32 b2cfc4e2 2003-09-30 devnull {
33 b2cfc4e2 2003-09-30 devnull 	int	icount;		/* neg num of bytes at eob */
34 b2cfc4e2 2003-09-30 devnull 	int	ocount;		/* num of bytes at bob */
35 b2cfc4e2 2003-09-30 devnull 	int	rdline;		/* num of bytes after rdline */
36 669250d1 2003-12-03 devnull 	int	runesize;	/* num of bytes of last getrune */
37 b2cfc4e2 2003-09-30 devnull 	int	state;		/* r/w/inactive */
38 b2cfc4e2 2003-09-30 devnull 	int	fid;		/* open file */
39 b2cfc4e2 2003-09-30 devnull 	int	flag;		/* magic if malloc'ed */
40 f533d4e0 2008-06-03 rsc 	long long	offset;		/* offset of buffer in file */
41 b2cfc4e2 2003-09-30 devnull 	int	bsize;		/* size of buffer */
42 b2cfc4e2 2003-09-30 devnull 	unsigned char*	bbuf;		/* pointer to beginning of buffer */
43 b2cfc4e2 2003-09-30 devnull 	unsigned char*	ebuf;		/* pointer to end of buffer */
44 b2cfc4e2 2003-09-30 devnull 	unsigned char*	gbuf;		/* pointer to good data in buf */
45 b2cfc4e2 2003-09-30 devnull 	unsigned char	b[Bungetsize+Bsize];
46 b2cfc4e2 2003-09-30 devnull };
47 b2cfc4e2 2003-09-30 devnull 
48 b2cfc4e2 2003-09-30 devnull #define	BGETC(bp)\
49 b2cfc4e2 2003-09-30 devnull 	((bp)->icount?(bp)->bbuf[(bp)->bsize+(bp)->icount++]:Bgetc((bp)))
50 b2cfc4e2 2003-09-30 devnull #define	BPUTC(bp,c)\
51 b2cfc4e2 2003-09-30 devnull 	((bp)->ocount?(bp)->bbuf[(bp)->bsize+(bp)->ocount++]=(c),0:Bputc((bp),(c)))
52 b2cfc4e2 2003-09-30 devnull #define	BOFFSET(bp)\
53 b2cfc4e2 2003-09-30 devnull 	(((bp)->state==Bractive)?\
54 b2cfc4e2 2003-09-30 devnull 		(bp)->offset + (bp)->icount:\
55 b2cfc4e2 2003-09-30 devnull 	(((bp)->state==Bwactive)?\
56 b2cfc4e2 2003-09-30 devnull 		(bp)->offset + ((bp)->bsize + (bp)->ocount):\
57 b2cfc4e2 2003-09-30 devnull 		-1))
58 b2cfc4e2 2003-09-30 devnull #define	BLINELEN(bp)\
59 b2cfc4e2 2003-09-30 devnull 	(bp)->rdline
60 b2cfc4e2 2003-09-30 devnull #define	BFILDES(bp)\
61 b2cfc4e2 2003-09-30 devnull 	(bp)->fid
62 b2cfc4e2 2003-09-30 devnull 
63 b2cfc4e2 2003-09-30 devnull int	Bbuffered(Biobuf*);
64 986b36bc 2003-11-23 devnull Biobuf*	Bfdopen(int, int);
65 b2cfc4e2 2003-09-30 devnull int	Bfildes(Biobuf*);
66 b2cfc4e2 2003-09-30 devnull int	Bflush(Biobuf*);
67 b2cfc4e2 2003-09-30 devnull int	Bgetc(Biobuf*);
68 b2cfc4e2 2003-09-30 devnull int	Bgetd(Biobuf*, double*);
69 623ae4f9 2004-12-28 devnull long	Bgetrune(Biobuf*);
70 b2cfc4e2 2003-09-30 devnull int	Binit(Biobuf*, int, int);
71 b2cfc4e2 2003-09-30 devnull int	Binits(Biobuf*, int, int, unsigned char*, int);
72 b2cfc4e2 2003-09-30 devnull int	Blinelen(Biobuf*);
73 f533d4e0 2008-06-03 rsc long long	Boffset(Biobuf*);
74 b2cfc4e2 2003-09-30 devnull Biobuf*	Bopen(char*, int);
75 b2cfc4e2 2003-09-30 devnull int	Bprint(Biobuf*, char*, ...);
76 b2cfc4e2 2003-09-30 devnull int	Bputc(Biobuf*, int);
77 623ae4f9 2004-12-28 devnull int	Bputrune(Biobuf*, long);
78 b2cfc4e2 2003-09-30 devnull void*	Brdline(Biobuf*, int);
79 623ae4f9 2004-12-28 devnull char*	Brdstr(Biobuf*, int, int);
80 b2cfc4e2 2003-09-30 devnull long	Bread(Biobuf*, void*, long);
81 f533d4e0 2008-06-03 rsc long long	Bseek(Biobuf*, long long, int);
82 b2cfc4e2 2003-09-30 devnull int	Bterm(Biobuf*);
83 b2cfc4e2 2003-09-30 devnull int	Bungetc(Biobuf*);
84 522b0689 2003-09-30 devnull int	Bungetrune(Biobuf*);
85 b2cfc4e2 2003-09-30 devnull long	Bwrite(Biobuf*, void*, long);
86 623ae4f9 2004-12-28 devnull int	Bvprint(Biobuf*, char*, va_list);
87 b2cfc4e2 2003-09-30 devnull 
88 f7012583 2003-11-25 devnull #if defined(__cplusplus)
89 f7012583 2003-11-25 devnull }
90 b2cfc4e2 2003-09-30 devnull #endif
91 f7012583 2003-11-25 devnull #endif