mirror of
https://github.com/golang/go
synced 2024-11-22 01:34:41 -07:00
118 lines
3.3 KiB
C
118 lines
3.3 KiB
C
/*
|
|
http://code.google.com/p/inferno-os/source/browse/include/bio.h
|
|
|
|
Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
|
|
Revisions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com). All rights reserved.
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
of this software and associated documentation files (the "Software"), to deal
|
|
in the Software without restriction, including without limitation the rights
|
|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
copies of the Software, and to permit persons to whom the Software is
|
|
furnished to do so, subject to the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be included in
|
|
all copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
THE SOFTWARE.
|
|
*/
|
|
|
|
#ifndef _BIO_H_
|
|
#define _BIO_H_ 1
|
|
#if defined(__cplusplus)
|
|
extern "C" {
|
|
#endif
|
|
|
|
#ifdef AUTOLIB
|
|
AUTOLIB(bio)
|
|
#endif
|
|
|
|
#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*);
|
|
Biobuf* Bfdopen(int, int);
|
|
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, unsigned char*, int);
|
|
int Blinelen(Biobuf*);
|
|
off_t Boffset(Biobuf*);
|
|
Biobuf* Bopen(char*, int);
|
|
int Bprint(Biobuf*, char*, ...);
|
|
int Bputc(Biobuf*, int);
|
|
int Bputrune(Biobuf*, long);
|
|
void* Brdline(Biobuf*, int);
|
|
char* Brdstr(Biobuf*, int, int);
|
|
long Bread(Biobuf*, void*, long);
|
|
off_t Bseek(Biobuf*, off_t, int);
|
|
int Bterm(Biobuf*);
|
|
int Bungetc(Biobuf*);
|
|
int Bungetrune(Biobuf*);
|
|
long Bwrite(Biobuf*, void*, long);
|
|
int Bvprint(Biobuf*, char*, va_list);
|
|
|
|
#if defined(__cplusplus)
|
|
}
|
|
#endif
|
|
#endif
|