database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-28 23:42:10 +03:00
Code Activity

tsearch2 module

Browse Source
This commit is contained in:
Teodor Sigaev
2003-07-21 10:27:44 +00:00
parent a605382670
commit b88605337e
63 changed files with 16908 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

71
contrib/tsearch2/tsvector.h Normal file
View File

@ -0,0 +1,71 @@
#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 {
uint32
haspos:1,
len:11, /* MAX 2Kb */
pos:20; /* MAX 1Mb */
} WordEntry;
#define MAXSTRLEN ( 1<<11 )
#define MAXSTRPOS ( 1<<20 )
typedef struct {
uint16
weight:2,
pos:14;
} WordEntryPos;
#define MAXENTRYPOS (1<<14)
#define MAXNUMPOS 256
#define LIMITPOS(x) ( ( (x) >= MAXENTRYPOS ) ? (MAXENTRYPOS-1) : (x) )
typedef struct
{
int4 len;
int4 size;
char data[1];
} tsvector;
#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) * ((tsvector*)x)->size ) )
#define STRSIZE(x) ( ((tsvector*)x)->len - DATAHDRSIZE - ( sizeof(WordEntry) * ((tsvector*)x)->size ) )
#define _POSDATAPTR(x,e) (STRPTR(x)+((WordEntry*)(e))->pos+SHORTALIGN(((WordEntry*)(e))->len))
#define POSDATALEN(x,e) ( ( ((WordEntry*)(e))->haspos ) ? (*(uint16*)_POSDATAPTR(x,e)) : 0 )
#define POSDATAPTR(x,e) ( (WordEntryPos*)( _POSDATAPTR(x,e)+sizeof(uint16) ) )
typedef struct {
WordEntry entry;
WordEntryPos *pos;
} WordEntryIN;
typedef struct
{
char *prsbuf;
char *word;
char *curpos;
int4 len;
int4 state;
int4 alen;
WordEntryPos *pos;
bool oprisdelim;
} TI_IN_STATE;
int4 gettoken_tsvector(TI_IN_STATE * state);
#endif