[chuck-users] removing shreds by name from within chuck

[Spencer Salazar]

Hi Atte,
ChucK's shred management functionality is still somewhat  
underdeveloped at this stage.  The full extent of what is possible is  
detailed here:
http://chuck.cs.princeton.edu/doc/language/spork.html

But I think this is some interesting functionality that you've  
suggested--ChucK could certainly use some more advanced shred  
management utilities.  Personally Id like to be able to rename  
shreds, as I get sick of seeing a bunch of "spork~exp"'s.

However, I think that it is possible to accomplish what you are  
trying to do with currently available functionality.  Suppose we have  
an array of of chuck files that are to be used in this system:

["vocals.ck", "guitar.ck", "bass.ck", "drums.ck" ] @=> 
string  
filenames[];

Lets also have an associative array saying whether or not a file is  
running; if it is running, the value of the array will be the shred  
number.  If not, the value will be 0.

int is_running[1];

E.g. is_running["vocals.ck"] will be 0 to start out with, and then  
the shred number once it gets started.  A bug in chuck behooves us to  
have at least 1 iterative element in the array even if we are only  
using the associative part.

Lets initialize the is_running array:

for( 0 => int i; i < filenames.cap(); i++ )
     0 => is_running[filenames[i]];

Now, we can write your code from below like this:

if( is_running[filename] )
{
     Machine.remove( is_running[filename] );
     0 => is_running[filename];
}

else
{
     Machine.add( filename ) => is_running[filename];
}

Let me know if this is what you were going for, or if I am completely  
off track.

spencer

On Nov 26, 2006, at 3:45 PM, Atte André Jensen wrote:

> Hi
>
> I'm trying to write a little something that'll load/unload files from
> within chuck. I've assigned different filenames to each of the keys  
> a-z
> and now when a key is pressed I want to:
>
> if(file_is_running(filename)){
> 	machine.remove(filename2id(filename));
> } else {
> 	machine.add(filename);
> }
>
> So basically: how do I figure out if a shred is running with a certain
> filename and how do I get the id? To be clear: This information is
> available in the terminal if I kick chuck with "chuck ^", but I  
> want to
> access this information inside chuck...
>
> -- 
> peace, love & harmony
> Atte
>
> http://www.atte.dk      | quintet:      http://www.anagrammer.dk
>                          | compositions: http://www.atte.dk/ 
> compositions
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