jamie

I am trying to work out how to display the contents of an external's containing

    x = (t_test *)newobject(test_class); 

    x->patcher = ((t_symbol *)gensym("

        if(ispatcher (x->patcher))

            rv = binbuf_totext (((t_patcher *)x->patcher)->p_box->b_binbuf, buf_text,

This just crashes Max when the external is loaded. The test ispatcher() succeeds,

but the call to binbuf_totext() results in a memory fault 'KERN_INVALID_ADDRESS'.

I am trying to work out how to display the contents of an external's containing
patch as text. So far I have:

void *test_new (float n){
	t_test *x;
	char **buf_text = newhandle(0);
	long buf_size;
	char rv;

	x = (t_test *)newobject(test_class); 
	x->patcher = ((t_symbol *)gensym("

	if(x->patcher){
		if(ispatcher (x->patcher))
			rv = binbuf_totext (((t_patcher *)x->patcher)->p_box->b_binbuf, buf_text,
&buf_size);
	}

This just crashes Max when the external is loaded. The test ispatcher() succeeds,
but the call to binbuf_totext() results in a memory fault 'KERN_INVALID_ADDRESS'.

using-binbuf_totext-to-read-patcher-contents

Just off the top of my head, but I had some problems with the

line-length in the binbufs, but I think that was on the writing

> I am trying to work out how to display the contents of an

>     char **buf_text = newhandle(0);

>     x = (t_test *)newobject(test_class);

>     x->patcher = ((t_symbol *)gensym("#P"))->s_thing;

>         if(ispatcher (x->patcher))

>             rv = binbuf_totext (((t_patcher

> *)x->patcher)->p_box->b_binbuf, buf_text,

> This just crashes Max when the external is loaded. The test

> but the call to binbuf_totext() results in a memory fault

> Anyone got an idea what could be wrong?

Just off the top of my head, but I had some problems with the
line-length in the binbufs, but I think that was on the writing
side of things.

>
> Hi,
>
> I am trying to work out how to display the contents of an
> external's containing
> patch as text. So far I have:
>
> void *test_new (float n){
> 	t_test *x;
> 	char **buf_text = newhandle(0);
> 	long buf_size;
> 	char rv;
>
> 	x = (t_test *)newobject(test_class);
> 	x->patcher = ((t_symbol *)gensym("#P"))->s_thing;
>
> 	if(x->patcher){
> 		if(ispatcher (x->patcher))
> 			rv = binbuf_totext (((t_patcher
> *)x->patcher)->p_box->b_binbuf, buf_text,
> &buf_size);
> 	}
>
> 	return (x);
> }
>
> This just crashes Max when the external is loaded. The test
> ispatcher() succeeds,
> but the call to binbuf_totext() results in a memory fault
> 'KERN_INVALID_ADDRESS'.
>
> Anyone got an idea what could be wrong?
>
> Jamie
>

I was looking through some code and I got the binbuf for a patch like this:

where p is a valid pointer to a patcher object

perhaps try binbuf_totext() on this binbuf

and maybe initialise your buf_size variable to 0 before calling it.

where p is a valid pointer to a patcher object
bb is a binbuf obtained via binbuf_new()

perhaps try binbuf_totext() on this binbuf
and maybe initialise your buf_size variable to 0 before calling it.

On Thu Mar 8 9:22 , Martin Robinson sent:

>I was looking through some code and I got the binbuf for a patch like this:

Thanks, that works like a charm! It just took me a few attempts to work out that

the call to the mess1() macro needs to be made after the class has been

On Thu Mar  8  9:22 , Martin Robinson  sent:

>I was looking through some code and I got the binbuf for a patch like this:
>
>mess1((Object *)p,gensym("save"),bb);
>

Thanks, that works like a charm! It just took me a few attempts to work out that
the call to the mess1() macro needs to be made after the class has been
instantiated i.e. outside of test_new().

Yes, I seem to call discovering (after many crashes) that the binbuf stored in a box/patcher is not often valid. But sending the "save" message should work since I guessed that's how Max gets the binbuf when it saves your patch.

The code I got this from was an object I made a few years ago called teleport which converted the enclosing patcher to binbuf/text then transmitted it via OSC and rebuilt the patch at he other end (including performing a loadbang).

The code I got this from was an object I made a few years ago called teleport which converted the enclosing patcher to binbuf/text then transmitted it via OSC and rebuilt the patch at  he other end (including performing a loadbang).


Using binbuf_totext to read patcher contents