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