dbus-cplusplus-devel

[dbus-cplusplus-devel] Variant type handling

[Or G. <ob...@gm...>]

Hi

How do I assign a value to a new variant type ?

For example:

::DBus::Variant Server::get(const std::string& key) {
    ::DBus::Variant var;

    // var = std::string("test"); // not this way

    // var.writer() << std::string("test"); // not this way either

    return var;
}

Next question - suppose a Variant contains an array of strings, how do I
detect that + how do I parse that ?

For example:

void Server::set(const std::string& key, const ::DBus::Variant& value) {
    if (value.signature().c_str()[0] == 'a') {
        // array
        //Am I suppose to parse the signature here ?
} else {
        // basic type
        std::string str = value;
        std::cout << str << std::endl;
    }
}

Thanks,
 Or

Re: [dbus-cplusplus-devel] Variant type handling

[Andreas V. <li...@br...>]

Am Sun, 25 Jul 2010 10:52:50 +0300 schrieb Or Goshen:

> Hi
> 
> How do I assign a value to a new variant type ?
> 
> For example:
> 
> ::DBus::Variant Server::get(const std::string& key) {
>     ::DBus::Variant var;
> 
>     // var = std::string("test"); // not this way
> 
>     // var.writer() << std::string("test"); // not this way either
> 
>     return var;
> }
> 
> Next question - suppose a Variant contains an array of strings, how
> do I detect that + how do I parse that ?
> 
> For example:
> 
> void Server::set(const std::string& key, const ::DBus::Variant&
> value) { if (value.signature().c_str()[0] == 'a') {
>         // array
>         //Am I suppose to parse the signature here ?
> } else {
>         // basic type
>         std::string str = value;
>         std::cout << str << std::endl;
>     }
> }

Hello Or,

see here some code how I use dbus-c++ with Obex. There's a usage of
Variant:

  ObexClient obexClient (conn);

  ::DBus::Variant v;
  ::DBus::MessageIter m = v.writer();
  m.append_string("00:21:AB:D6:25:3F");

  ::DBus::Variant v2;
  ::DBus::MessageIter m2 = v2.writer();
  m2.append_string("PBAP");

  map <std::string, ::DBus::Variant> sessionParam;
  sessionParam["Destination"] = v;
  sessionParam["Target"] = v2;

  ::DBus::Path session_path = obexClient.CreateSession (sessionParam);

  cout << "Session Path: " << session_path << endl;

  PhonebookAccess pbap (conn, session_path);

  ObexSession obexSession (conn, session_path);

  pbap.Select ("SIM", "och");

  pbap.SetFormat ("vcard30");

  string ret = pbap.PullAll ();

  cout << ret << endl;

If you've still some questions then please assign to the list. I
allowed your mail even if you're not assigned this one time.

regards
	Andreas