/*
 * The library function implemented in this module looks up 4-digit short
 * dialing numbers in ThemWi number db to determine their disposition.
 */

#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include "../include/number_db_v2.h"

extern struct numdb_file_hdr numdb_hdr;
extern struct short_number_rec *numdb_short_numbers;

static int
compare_short_num(p1, p2)
	uint16_t *p1, *p2;
{
	if (*p1 < *p2)
		return(-1);
	if (*p1 > *p2)
		return(1);
	return(0);
}

struct short_number_rec *
numdb_lookup_short(numstr)
	char *numstr;
{
	uint16_t key;

	if (!numdb_short_numbers || !numdb_hdr.short_number_count)
		return(0);
	key = digits4_to_uint16(numstr);
	return bsearch(&key, numdb_short_numbers, numdb_hdr.short_number_count,
			sizeof(struct short_number_rec), compare_short_num);
}