[Click] read handler with parameters

[sam barker]

Hi Eddie,
I saw that we can only pass a string to the function.

Suppose I want to pass pointers as arguments[Packet *].
Should I convert it into string and then pass it to my function.?

Cheers ,
Sam

On Jan 16, 2008 1:09 PM, sam barker <sam.barker0 at gmail.com> wrote:

> Thanks Eddie.
>
>
> On Jan 16, 2008 12:41 PM, Eddie Kohler <kohler at cs.ucla.edu> wrote:
>
> > The argument gets passed in as a single string.  You can parse multiple
> > arguments out of it by, for example, separating at spaces, via
> > cp_space_kparse.
> >
> > Eddie
> >
> >
> > sam barker wrote:
> > > Hi Eddie,
> > > Thanks for the tip.I am able to pass a value.
> > >
> > > Is it possible to for me to pass more that one argument through the
> > > set_handler?
> > >
> > > Cheers,
> > > Sam
> > >
> > > On Jan 16, 2008 10:24 AM, Eddie Kohler < kohler at cs.ucla.edu
> > > <mailto:kohler at cs.ucla.edu>> wrote:
> > >
> > >     If you want your read handler to take parameters, you need to use
> > >     set_handler() and supply Handler::OP_READ | Handler::READ_PARAM.
> > >
> > >     http://www.read.cs.ucla.edu/click/doxygen/classElement.html#4b0cd1711fb51b8aba0f2e01f3eba9c0
> >
> > >
> > >     Eddie
> > >
> > >
> > >     sam barker wrote:
> > >      > Hi Beyers,
> > >      > I tried it but got the error "read handlers does not take
> > >     parameters".
> > >      >
> > >      > Is there anyway way to call the read handler with
> > >     parameters.[Suppose if you
> > >      > want to return  a value  corresponding to the passed parameter]
> > >      >
> > >      > I was going through a manual called coding concepts which
> > clearly
> > >     states
> > >      > that "You can't call a ReadHandler with arguments"
> > >      >
> > >      >
> > >      > Cheers,
> > >      > Sam
> > >      > On Jan 15, 2008 9:01 PM, Beyers Cronje < bcronje at gmail.com
> > >     <mailto:bcronje at gmail.com>> wrote:
> > >      >
> > >      >> Hi Sam,
> > >      >>
> > >      >> I've never passed a parameter to a read handler before, so
> > this
> > >     might be
> > >      >> wrong....
> > >      >>
> > >      >> Your telnet command should be:
> > >      >>
> > >      >> read readelement_name.a_handle 1
> > >      >>
> > >      >> Also I believe the prototype of add_handlers is onle 'virtual
> > void
> > >      >> add_handlers();'
> > >      >>
> > >      >> Beyers
> > >      >>
> > >      >> On Jan 15, 2008 4:11 AM, sam barker <sam.barker0 at gmail.com
> > >     <mailto:sam.barker0 at gmail.com>> wrote:
> > >      >>
> > >      >>> Hi All,
> > >      >>> I was trying out the read handler with a parameter and I seem
> >
> > >     to be
> > >      >>> stuck.
> > >      >>>
> > >      >>> Basically I wan t to  pass an int parameter to my_func().
> > >      >>>
> > >      >>> After I telnet into the localhost how do I call the
> > function?.
> > >      >>> I had used  read readelement_name.a_handle(1);
> > >      >>>
> > >      >>> The the partial code of my .cc file is below
> > >      >>>
> > >      >>>
> > >      >>> String readelement::handle(Element *e, void *thunk){
> > >      >>>    readelement * me = (readelement *) e;
> > >      >>>
> > >      >>>    int *i;
> > >      >>>    i=(int *)thunk;
> > >      >>>    return me->my_func(i);
> > >      >>> }
> > >      >>> void readelement::add_handlers(void * thunk){
> > >      >>>    add_read_handler("a_handle", &handle, (void *)thunk);
> > >      >>> }
> > >      >>>
> > >      >>> Regards,
> > >      >>> Sam
> > >      >>> _______________________________________________
> > >      >>> click mailing list
> > >      >>> click at amsterdam.lcs.mit.edu <mailto:
> > click at amsterdam.lcs.mit.edu>
> > >      >>> https://amsterdam.lcs.mit.edu/mailman/listinfo/click
> > >      >>>
> > >      >>
> > >      > _______________________________________________
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> > >      > click at amsterdam.lcs.mit.edu <mailto:click at amsterdam.lcs.mit.edu
> > >
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> > >
> > >
> >
>
>