fzy.c

/*
 * fzy.c
 */

#include "postgres.h"

#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <sys/stat.h>
#include <unistd.h>

#include "funcapi.h"
#include "fzy_native/src/match.c"

#ifndef unlikely
#define unlikely(x) __builtin_expect((x), 0)
#endif


PG_MODULE_MAGIC;

Datum fzy(PG_FUNCTION_ARGS);
PG_FUNCTION_INFO_V1(fzy);

Datum fzy(PG_FUNCTION_ARGS) {
    char *needle   = PG_GETARG_CSTRING(0);
    char *haystack = PG_GETARG_CSTRING(1);

    int32_t result = 0;

    if (has_match(needle, haystack, 0)) {
        if (unlikely(strcasecmp(needle, haystack) == 0)) {
            result = INT32_MAX;
        } else {
            result = (int32_t)(match(needle, haystack, 0) * 1000);
        }
    }

    PG_RETURN_INT32(result);
}