Function geoposCommand

src/geo.cpp:933–959

GEOPOS key ele1 ele2 ... eleN * * Returns an array of two-items arrays representing the x,y position of each * element specified in the arguments. For missing elements NULL is returned. */

 * Returns an array of two-items arrays representing the x,y position of each
 * element specified in the arguments. For missing elements NULL is returned. */
void geoposCommand(client *c) {
    int j;

    /* Look up the requested zset */
    robj_roptr zobj = lookupKeyRead(c->db, c->argv[1]);
    if (checkType(c, zobj, OBJ_ZSET)) return;

    /* Report elements one after the other, using a null bulk reply for
     * missing elements. */
    addReplyArrayLen(c,c->argc-2);
    for (j = 2; j < c->argc; j++) {
        double score;
        if (!zobj || zsetScore(zobj, szFromObj(c->argv[j]), &score) == C_ERR) {
            addReplyNullArray(c);
        } else {
            /* Decode... */
            double xy[2];
            if (!decodeGeohash(score,xy)) {
                addReplyNullArray(c);
                continue;
            }
            addReplyArrayLen(c,2);
            addReplyHumanLongDouble(c,xy[0]);
            addReplyHumanLongDouble(c,xy[1]);
        }
    }
}

/* GEODIST key ele1 ele2 [unit]
 *