dict_tmpl.c.in

PostgreSQL 8.1.4的源码 适用于Linux下的开源数据库系统

/* 
 * example of dictionary 
 * Teodor Sigaev <[e-mail]>
 */
#include <errno.h>
#include <stdlib.h>
#include <string.h>

#include "postgres.h"

#include "dict.h"
#include "common.h"

#include "subinclude.h"

HASINIT typedef struct {
HASINIT 	StopList	stoplist;
HASINIT } DictExample;


HASINIT PG_FUNCTION_INFO_V1(dinit_CFG_MODNAME);
HASINIT Datum dinit_CFG_MODNAME(PG_FUNCTION_ARGS);

HASINIT Datum 
HASINIT dinit_CFG_MODNAME(PG_FUNCTION_ARGS) {
HASINIT 	DictExample	*d = (DictExample*)malloc( sizeof(DictExample) );
HASINIT 
HASINIT 	if ( !d )
HASINIT			ereport(ERROR,
HASINIT					(errcode(ERRCODE_OUT_OF_MEMORY),
HASINIT					 errmsg("out of memory")));
HASINIT 	memset(d,0,sizeof(DictExample));
HASINIT 
HASINIT 	d->stoplist.wordop=lowerstr;
HASINIT 	
HASINIT 	/* Your INIT code */
HASINIT 	
HASINIT 	if ( !PG_ARGISNULL(0) && PG_GETARG_POINTER(0)!=NULL ) {
HASINIT 		text       *in = PG_GETARG_TEXT_P(0);
HASINIT 		readstoplist(in, &(d->stoplist));
HASINIT 		sortstoplist(&(d->stoplist));
HASINIT 		PG_FREE_IF_COPY(in, 0);
HASINIT 	}
HASINIT 
HASINIT 	PG_RETURN_POINTER(d);
HASINIT }

PG_FUNCTION_INFO_V1(dlexize_CFG_MODNAME);
Datum dlexize_CFG_MODNAME(PG_FUNCTION_ARGS);
Datum
dlexize_CFG_MODNAME(PG_FUNCTION_ARGS) {
HASINIT 	DictExample *d = (DictExample*)PG_GETARG_POINTER(0);
	char       *in = (char*)PG_GETARG_POINTER(1);
	char *txt = pnstrdup(in, PG_GETARG_INT32(2));
	TSLexeme	*res=palloc(sizeof(TSLexeme*)*2);

	/* Your LEXIZE dictionary code */
HASINIT 	if ( *txt=='\0' || searchstoplist(&(d->stoplist),txt) ) {
HASINIT 		pfree(txt);
HASINIT 		res[0].lexeme=NULL;
HASINIT 	} else 
		res[0].lexeme=txt;
	res[1].lexeme=NULL;

	PG_RETURN_POINTER(res);
}