| 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980 |
- #ifndef _BIOH_
- #define _BIOH_ 1
- #include <sys/types.h> /* for off_t */
- #include <fcntl.h> /* for O_RDONLY, O_WRONLY */
- 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 */
- off_t offset; /* offset of buffer in file */
- int bsize; /* size of buffer */
- unsigned char* bbuf; /* pointer to beginning of buffer */
- unsigned char* ebuf; /* pointer to end of buffer */
- unsigned char* gbuf; /* pointer to good data in buf */
- unsigned char 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*);
- int Binit(Biobuf*, int, int);
- int Binits(Biobuf*, int, int, unsigned char*, int);
- int Blinelen(Biobuf*);
- off_t Boffset(Biobuf*);
- Biobuf* Bopen(char*, int);
- int Bprint(Biobuf*, char*, ...);
- int Bputc(Biobuf*, int);
- void* Brdline(Biobuf*, int);
- long Bread(Biobuf*, void*, long);
- off_t Bseek(Biobuf*, off_t, int);
- int Bterm(Biobuf*);
- int Bungetc(Biobuf*);
- long Bwrite(Biobuf*, void*, long);
- long Bgetrune(Biobuf*);
- int Bputrune(Biobuf*, long);
- int Bungetrune(Biobuf*);
- #endif
|
