Function addReplyHelp

app/redis-6.2.6/src/networking.c:901–919

Add an array of C strings as status replies with a heading. * This function is typically invoked by from commands that support * subcommands in response to the 'help' subcommand. The help array * is terminated by NULL sentinel. */

 * subcommands in response to the 'help' subcommand. The help array
 * is terminated by NULL sentinel. */
void addReplyHelp(client *c, const char **help) {
    sds cmd = sdsnew((char*) c->argv[0]->ptr);
    void *blenp = addReplyDeferredLen(c);
    int blen = 0;

    sdstoupper(cmd);
    addReplyStatusFormat(c,
        "%s <subcommand> [<arg> [value] [opt] ...]. Subcommands are:",cmd);
    sdsfree(cmd);

    while (help[blen]) addReplyStatus(c,help[blen++]);

    addReplyStatus(c,"HELP");
    addReplyStatus(c,"    Prints this help.");

    blen += 1;  /* Account for the header. */
    blen += 2;  /* Account for the footer. */
    setDeferredArrayLen(c,blenp,blen);
}

/* Add a suggestive error reply.
 * This function is typically invoked by from commands that support