getline not working



  • I'm porting yet another plugin to R20.
    In this plugin, I have to parse lines that I read, line by line, from a file.
    I was using std functions, namely getline.
    But I'm getting "No matching function for call to 'getline'" errors.
    Is it a limitation of the new coding environment?
    How can I read a stream, line by line and then, parse the line element by element (elements are separated by ', ' (a comma and a space)?



  • Hi Rui, thanks for writing us.

    With regard to the issue reported, it's likely that, being getline defined in the std:: namespace you're invoking it without explicitly using the namespace being the std namespace not being used by default.

    Invoking std::getline() should then fix the issue on your side.

    Being said that, I warmly recommend to get rid of using methods outside of Cinema 4D API and instead to have a look at the InputStream Manual and to ParseHelper::ConvertTextToLines static method.

    Best, Riccardo



  • I will try it, Riccardo.
    The "beauty" of getline is that I can parse value by value, and the line will get shorter automatically, as I read values from it.
    Since I use it to parse OBJ and FBX files, changing methods would require me to recode everything. But, sometimes, we just have to bite the bullet and re-write stuff, I know ;-)



  • I still get the "No matching function for call to 'getlin'" error, for example in this code, even after replacing getline with std::getline:

    void polypaint::read_line_indexes(string line, BaseContainer &bc)
    {
    std::stringstream ss(line);
    std::string field;
    Int32 index;

    while (std::getline(ss, field, ', '))
    {
    	index = atoi(field.c_str());
    
    	bc.SetInt32(store_index_count, index);
    	store_index_count++;
    }
    

    }



  • Hi rui_mac,

    std::getline() in its signature accepts std::basic_istream and not std::stringstream and this is the reason why you're provided back with such an error.

    Riccardo



  • It is so weird that it worked in versions pre R20.
    Well, I will have to find a new solution, then.


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