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58 lines (46 loc) · 1.64 KB
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/********************************************
fin.h
copyright 1991,2014-2016 Michael D. Brennan
This is a source file for mawk, an implementation of
the AWK programming language.
Mawk is distributed without warranty under the terms of
the GNU General Public License, version 3, 2007.
If you import elements of this code into another product,
you agree to not name that product mawk.
********************************************/
/* fin.h */
#ifndef FIN_H
#define FIN_H
/* structure to control input files */
typedef struct {
int fd ;
FILE *fp ;
char *buff ; /* base */
char *start ; /* start of next record */
char* end ; /* end of data in buff[] */
size_t buffsz ; /* size of buff[] */
int flags ;
int close_val ; /* return value for close */
} FIN ;
/* fd and fp in FIN: three possiblities.
interactive -- reading with fgets, fp is valid fd is -1
block reading a file -- fd is valid >= 0, fp is 0
block reading an input pipe -- fd is valid, used for read
fp is valid, used for pclose()
*/
#define MAIN_FLAG 1 /* part of main input stream if on */
#define EOF_FLAG 2
#define START_FLAG 4 /* used when RS == "" */
FIN * FINdopen(int, int) ;
FIN * FINopen(const char *, int) ;
FIN* FINpopen(const char*) ;
int FINclose(FIN *) ;
void FINsemi_close(FIN *) ;
char* FINgets(FIN *, size_t *) ;
size_t fillbuff(int, char *, size_t) ;
extern FIN *main_fin ; /* for the main input stream */
void open_main(void) ;
FIN* next_main(int) ;
#define setmode setmode_ /* avoid conflict with declaration in <unistd.h> on BitRig BSD */
void setmode(int,int) ;
#endif /* FIN_H */