postgresql/contrib/tsearch/txtidx.h
Tom Lane b57705673d txtidx datatype for full text indexing with GiST.
From Oleg Bartunov and Teodor Sigaev.
2001-10-12 23:19:09 +00:00

47 lines
922 B
C

#ifndef __TXTIDX_H__
#define __TXTIDX_H__
/*
#define TXTIDX_DEBUG
*/
#include "postgres.h"
#include "access/gist.h"
#include "access/itup.h"
#include "utils/elog.h"
#include "utils/palloc.h"
#include "utils/builtins.h"
#include "storage/bufpage.h"
typedef struct {
uint16 len;
uint16 pos;
} WordEntry;
typedef struct {
int4 len;
int4 size;
char data[1];
} txtidx;
#define DATAHDRSIZE (sizeof(int4)*2)
#define CALCDATASIZE(x, lenstr) ( x * sizeof(WordEntry) + DATAHDRSIZE + lenstr )
#define ARRPTR(x) ( (WordEntry*) ( (char*)x + DATAHDRSIZE ) )
#define STRPTR(x) ( (char*)x + DATAHDRSIZE + ( sizeof(WordEntry) * ((txtidx*)x)->size ) )
#define STRSIZE(x) ( ((txtidx*)x)->len - DATAHDRSIZE - ( sizeof(WordEntry) * ((txtidx*)x)->size ) )
typedef struct {
char *prsbuf;
char *word;
char *curpos;
int4 len;
int4 state;
bool oprisdelim;
} TI_IN_STATE;
int4 gettoken_txtidx( TI_IN_STATE *state );
#endif