Custom server URL

[Brawl345]

Using a custom server URL without recompiling should be possible. It should be read from the feeds.xml from the <url> attribute of the <rss> tag (like this: <rss url="http://u.wiidb.de/rssmii/rss_test_displayer.php">

The code already has the basics, but I suck at C and mxmlElementGetAttr wants a const char * 🤔

[GaryOderNichts]

I guess you mean this compiler warning: warning: assignment discards ‘const’ qualifier from pointer target type
A const pointer means that the memory this pointer is pointing to should not be modified once assigned.
You have two options to get rid of this warning:

1. Ignore the warning by just casting it to a char*implicitly
   server_url = (char*) mxmlElementGetAttr(rss, "url");
2. Copy the contents of the result into you server_url pointer

    char* server_url;
    const char* tmp_server_url = mxmlElementGetAttr(rss, "url");
    if (tmp_server_url != NULL) 
    {
        size_t url_lenght = strlen(tmp_server_url);
        server_url = malloc(url_lenght + 1); // allocate memory for the string and the null terminator
        strcpy(server_url, tmp_server_url);
    }
    else
    {
        server_url = "http://u.wiidb.de/rssmii/rss_displayer.php";
    }

Edit: this is better or else you cannot free your server url:

    const char* default_server_url = "http://u.wiidb.de/rssmii/rss_displayer.php";
    char* server_url;
    const char* tmp_server_url = mxmlElementGetAttr(rss, "url");
    if (tmp_server_url != NULL) 
    {
        size_t url_lenght = strlen(tmp_server_url);
        server_url = malloc(url_lenght + 1); // allocate memory for the string and the null terminator
        strcpy(server_url, tmp_server_url);
    }
    else
    {
        size_t url_lenght = strlen(default_server_url);
        server_url = malloc(url_lenght + 1); // allocate memory for the string and the null terminator
        strcpy(server_url, default_server_url);
    }