hbase

heirloom base
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bio.h (2124B)


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