ref: 5611a46d8fb04ec3fd60c05a1486743cea98a311
dir: /include/bio.h/
#pragma src "/usr/inferno/libbio"
typedef struct Biobuf Biobuf;
enum
{
Bsize = 8*1024,
Bungetsize = UTFmax+1, /* 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 */
vlong 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];
};
/* 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(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*);
vlong Boffset(Biobuf*);
Biobuf* Bopen(char*, int);
int Bprint(Biobuf*, char*, ...);
int Bvprint(Biobuf*, char*, va_list);
int Bputc(Biobuf*, int);
int Bputrune(Biobuf*, long);
void* Brdline(Biobuf*, int);
char* Brdstr(Biobuf*, int, int);
long Bread(Biobuf*, void*, long);
vlong Bseek(Biobuf*, vlong, int);
int Bterm(Biobuf*);
int Bungetc(Biobuf*);
int Bungetrune(Biobuf*);
long Bwrite(Biobuf*, void*, long);
#pragma varargck argpos Bprint 2