Function georadiusGetKeys

app/redis-6.2.6/src/db.c:1794–1826

Helper function to extract keys from following commands: * GEORADIUS key x y radius unit [WITHDIST] [WITHHASH] [WITHCOORD] [ASC|DESC] * [COUNT count] [STORE key] [STOREDIST key] * GEORADIUSBYMEMBER key member radius unit ... options ... */

 *                             [COUNT count] [STORE key] [STOREDIST key]
 * GEORADIUSBYMEMBER key member radius unit ... options ... */
int georadiusGetKeys(struct redisCommand *cmd, robj **argv, int argc, getKeysResult *result) {
    int i, num, *keys;
    UNUSED(cmd);

    /* Check for the presence of the stored key in the command */
    int stored_key = -1;
    for (i = 5; i < argc; i++) {
        char *arg = argv[i]->ptr;
        /* For the case when user specifies both "store" and "storedist" options, the
         * second key specified would override the first key. This behavior is kept
         * the same as in georadiusCommand method.
         */
        if ((!strcasecmp(arg, "store") || !strcasecmp(arg, "storedist")) && ((i+1) < argc)) {
            stored_key = i+1;
            i++;
        }
    }
    num = 1 + (stored_key == -1 ? 0 : 1);

    /* Keys in the command come from two places:
     * argv[1] = key,
     * argv[5...n] = stored key if present
     */
    keys = getKeysPrepareResult(result, num);

    /* Add all key positions to keys[] */
    keys[0] = 1;
    if(num > 1) {
         keys[1] = stored_key;
    }
    result->numkeys = num;
    return num;
}

/* LCS ... [KEYS <key1> <key2>] ... */
int lcsGetKeys(struct redisCommand *cmd, robj **argv, int argc, getKeysResult *result) {