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- /*
- * This file is part of the UCB release of Plan 9. It is subject to the license
- * terms in the LICENSE file found in the top-level directory of this
- * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
- * part of the UCB release of Plan 9, including this file, may be copied,
- * modified, propagated, or distributed except according to the terms contained
- * in the LICENSE file.
- */
- #pragma src "/sys/src/lib/bio"
- #pragma lib "libbio.a"
- typedef struct Biobuf Biobuf;
- typedef struct Biobufhdr Biobufhdr;
- enum
- {
- Bsize = 8*1024,
- Bungetsize = UTFmax+1, /* space for ungetc */
- Bmagic = 0x314159,
- Beof = -1,
- Bbad = -2,
- Binactive = 0, /* states */
- Bractive,
- Bwactive,
- Bracteof,
- };
- struct Biobufhdr
- {
- 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 */
- int64_t offset; /* offset of buffer in file */
- int bsize; /* size of buffer */
- uint8_t* bbuf; /* pointer to beginning of buffer */
- uint8_t* ebuf; /* pointer to end of buffer */
- uint8_t* gbuf; /* pointer to good data in buf */
- };
- struct Biobuf
- {
- Biobufhdr;
- uint8_t b[Bungetsize+Bsize];
- };
- /* Dregs, redefined as functions for backwards compatibility */
- #define BGETC(bp) Bgetc(bp)
- #define BPUTC(bp,c) Bputc(bp,c)
- #define BOFFSET(bp) Boffset(bp)
- #define BLINELEN(bp) Blinelen(bp)
- #define BFILDES(bp) Bfildes(bp)
- int Bbuffered(Biobufhdr*);
- int Bfildes(Biobufhdr*);
- int Bflush(Biobufhdr*);
- int Bgetc(Biobufhdr*);
- int Bgetd(Biobufhdr*, double*);
- int32_t Bgetrune(Biobufhdr*);
- int Binit(Biobuf*, int, int);
- int Binits(Biobufhdr*, int, int, uint8_t*, int);
- int Blinelen(Biobufhdr*);
- int64_t Boffset(Biobufhdr*);
- Biobuf* Bopen(char*, int);
- Biobuf* Bfdopen(int, int);
- int Bprint(Biobufhdr*, char*, ...);
- int Bvprint(Biobufhdr*, char*, va_list);
- int Bputc(Biobufhdr*, int);
- int Bputrune(Biobufhdr*, int32_t);
- void* Brdline(Biobufhdr*, int);
- char* Brdstr(Biobufhdr*, int, int);
- int32_t Bread(Biobufhdr*, void*, int32_t);
- int64_t Bseek(Biobufhdr*, int64_t, int);
- int Bterm(Biobufhdr*);
- int Bungetc(Biobufhdr*);
- int Bungetrune(Biobufhdr*);
- int32_t Bwrite(Biobufhdr*, void*, int32_t);
- #pragma varargck argpos Bprint 2
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