#pragma	src	"/usr/inferno/libbio" typedef	struct	Biobuf	Biobuf; enum{	Bsize		= 8*1024,	Bungetsize	= 4,		/* space for ungetc */	Bmagic		= 0x314159,	Beof		= -1,	Bbad		= -2, 	Binactive	= 0,		/* states */	Bractive,	Bwactive,	Bracteof, 	Bend}; struct	Biobuf{	int	icount;		/* neg num of bytes at eob */	int	ocount;		/* num of bytes at bob */	int	rdline;		/* num of bytes after rdline */	int	runesize;	/* num of bytes of last getrune */	int	state;		/* r/w/inactive */	int	fid;		/* open file */	int	flag;		/* magic if malloc'ed */	long	offset;		/* offset of buffer in file */	int	bsize;		/* size of buffer */	uchar*	bbuf;		/* pointer to beginning of buffer */	uchar*	ebuf;		/* pointer to end of buffer */	uchar*	gbuf;		/* pointer to good data in buf */	uchar	b[Bungetsize+Bsize];}; #define	BGETC(bp)\	((bp)->icount?(bp)->bbuf[(bp)->bsize+(bp)->icount++]:Bgetc((bp)))#define	BPUTC(bp,c)\	((bp)->ocount?(bp)->bbuf[(bp)->bsize+(bp)->ocount++]=(c),0:Bputc((bp),(c)))#define	BOFFSET(bp)\	(((bp)->state==Bractive)?\		(bp)->offset + (bp)->icount:\	(((bp)->state==Bwactive)?\		(bp)->offset + ((bp)->bsize + (bp)->ocount):\		-1))#define	BLINELEN(bp)\	(bp)->rdline#define	BFILDES(bp)\	(bp)->fid int	Bbuffered(Biobuf*);int	Bfildes(Biobuf*);int	Bflush(Biobuf*);int	Bgetc(Biobuf*);int	Bgetd(Biobuf*, double*);long	Bgetrune(Biobuf*);int	Binit(Biobuf*, int, int);int	Binits(Biobuf*, int, int, uchar*, int);int	Blinelen(Biobuf*);long	Boffset(Biobuf*);Biobuf*	Bopen(char*, int);int	Bprint(Biobuf*, char*, ...);int	Bputc(Biobuf*, int);int	Bputrune(Biobuf*, long);void*	Brdline(Biobuf*, int);long	Bread(Biobuf*, void*, long);long	Bseek(Biobuf*, long, int);int	Bterm(Biobuf*);int	Bungetc(Biobuf*);int	Bungetrune(Biobuf*);long	Bwrite(Biobuf*, void*, long); #pragma	varargck	argpos	Bprint	2