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field.h
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/********************************************
field.h
copyright 2009-2010,2014 Thomas E. Dickey
copyright 1991-1995,2014 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 2, 1991.
********************************************/
/*
* $MawkId: field.h,v 1.12 2014/08/22 00:51:01 tom Exp $
* @Log: field.h,v @
* Revision 1.2 1995/06/18 19:42:16 mike
* Remove some redundant declarations and add some prototypes
*
* Revision 1.1.1.1 1993/07/03 18:58:12 mike
* move source to cvs
*
* Revision 5.2 1992/01/06 08:10:24 brennan
* set_binmode() proto for MSDOS
*
* Revision 5.1 91/12/05 07:59:16 brennan
* 1.1 pre-release
*
*/
/* field.h */
#ifndef MAWK_FIELD_H
#define MAWK_FIELD_H 1
#include "nstd.h"
#include "types.h"
extern void set_field0(char *, size_t);
extern void split_field0(void);
extern void field_assign(CELL *, CELL *);
extern char *is_string_split(PTR, SLen *);
extern void slow_cell_assign(CELL *, CELL *);
extern CELL *slow_field_ptr(int);
extern int field_addr_to_index(CELL *);
extern void set_binmode(int);
#define NUM_PFIELDS 5
extern CELL field[FBANK_SZ + NUM_PFIELDS];
/* $0, $1 ... $(FBANK_SZ-1), NF, RS, RS, CONVFMT, OFMT */
/* more fields if needed go here */
extern CELL **fbankv; /* fbankv[0] == field */
/* index to CELL * for a field */
#define field_ptr(i) ((i) < FBANK_SZ ? field + (i) : slow_field_ptr(i))
/* some, such as RS may be defined in system-headers */
#undef NF
#undef RS
#undef FS
#undef CONVFMT
#undef OFMT
/* some compilers choke on (NF-field) in a case statement
even though it's constant so ...
*/
#define NF_field FBANK_SZ
#define RS_field (FBANK_SZ + 1)
#define FS_field (FBANK_SZ + 2)
#define CONVFMT_field (FBANK_SZ + 3)
#define OFMT_field (FBANK_SZ + 4)
/* the pseudo fields, assignment has side effects */
#define NF (field + NF_field) /* must be first */
#define RS (field + RS_field)
#define FS (field + FS_field)
#define CONVFMT (field + CONVFMT_field)
#define OFMT (field + OFMT_field) /* must be last */
#define LAST_PFIELD OFMT
extern int nf; /* shadows NF */
/* a shadow type for RS and FS */
#define SEP_SPACE 0
#define SEP_CHAR 1
#define SEP_STR 2
#define SEP_RE 3
#define SEP_MLR 4
typedef struct {
char type;
char c;
PTR ptr; /* STRING* or RE machine* */
} SEPARATOR;
extern SEPARATOR rs_shadow;
extern CELL fs_shadow;
/* types for splitting overflow */
typedef struct spov {
struct spov *link;
STRING *sval;
} SPLIT_OV;
extern SPLIT_OV *split_ov_list;
#endif /* MAWK_FIELD_H */