Category : C Source Code
Archive   : F2CSRC.ZIP
Filename : FIO.H

#include "stdio.h"
#ifndef NULL
/* ANSI C */
#include "stddef.h"
#endif

#ifndef SEEK_SET
#define SEEK_SET 0
#define SEEK_CUR 1
#define SEEK_END 2
#endif

#ifdef MSDOS
#ifndef NON_UNIX_STDIO
#define NON_UNIX_STDIO
#endif
#endif

/*units*/
typedef struct
{ FILE *ufd; /*0=unconnected*/
char *ufnm;
#ifndef MSDOS
long uinode;
int udev;
#endif
int url; /*0=sequential*/
flag useek; /*true=can backspace, use dir, ...*/
flag ufmt;
flag uprnt;
flag ublnk;
flag uend;
flag uwrt; /*last io was write*/
flag uscrtch;
} unit;

extern int errno;
extern flag init;
extern cilist *elist; /*active external io list*/
extern flag reading,external,sequential,formatted;
extern int (*getn)(),(*putn)(); /*for formatted io*/
extern long inode();
extern FILE *cf; /*current file*/
extern unit *curunit; /*current unit*/
extern unit units[];
extern VOID sig_die();
#define err(f,m,s) {if(f) errno= m; else fatal(m,s); return(m);}

/*Table sizes*/
#define MXUNIT 100

extern int recpos; /*position in current record*/
extern int cursor; /* offset to move to */
extern int hiwater; /* so TL doesn't confuse us */

#define WRITE 1
#define READ 2
#define SEQ 3
#define DIR 4
#define FMT 5
#define UNF 6
#define EXT 7
#define INT 8

#define buf_end(x) (x->_flag & _IONBF ? x->_ptr : x->_base + BUFSIZ)