Method rfind

modules/gui/gui/src/backend/text_server/ustring.cpp:3688–3744

}

int String::rfind(const String& p_str, int p_from) const
{
    // establish a limit
    int limit = length() - p_str.length();
    if (limit < 0)
    {
        return -1;
    }

    // establish a starting point
    if (p_from < 0)
    {
        p_from = limit;
    }
    else if (p_from > limit)
    {
        p_from = limit;
    }

    int src_len = p_str.length();
    int len     = length();

    if (src_len == 0 || len == 0)
    {
        return -1; // won't find anything!
    }

    const char32_t* src = get_data();

    for (int i = p_from; i >= 0; i--)
    {
        bool found = true;
        for (int j = 0; j < src_len; j++)
        {
            int read_pos = i + j;

            if (read_pos >= len)
            {
                ERR_PRINT("read_pos>=len");
                return -1;
            }

            if (src[read_pos] != p_str[j])
            {
                found = false;
                break;
            }
        }

        if (found)
        {
            return i;
        }
    }

    return -1;
}