Is it possible to make a while error or while no error Matlab

Hello !

In my matlab script i'm parsing a text file with a specific tag structure and creating Simulink Block for each occurence of a special Tag i found. A simple example i have this :

[Link]
  Link_Name : On/Off 
  Link_ID : _sZfSkku9Eemg_bhrv2HEbw

[Link] 
  Link_Name : On/Off
  Link_ID : _qsYbsVeeEemna8dVWPKMTw

You can see that this is not the same Object but they have the same name and so when in matlab i create a simulink block for each Link i found i have an error

"can't create a new On/Off Block"

something like that.

So i put the ID in the description of the Block and if it's the same i just update the name in case of if the user changed the name in the text file :

  set_param(gcb,'Name', link_NameValue);

If it's different i create a new Block :

  add_block('simulink/Ports & Subsystems/In1',[component_NameValue '/' link_NameValue], 'MakeNameUnique', 'on');

The problem is with " 'MakeNameUnique', 'on' " it will create an infinity of Block if i run my script many times

and with set_param i have an error

The name 'On_Off' already exists

So i would like to make a while loop like this :

while error "can't create a new block"  
    add a "x" at the end of the name of the new block
end

or

while error "The name 'On_Off' already exists"
    add a "x" at the end of the name of the existing block 
end

So even if i have 4 [Link] with the name On/Off it will create On/Off, On/Offx, On/Offxx, On/Offxxx or with number at the end if it's possible.

Thanks for helping ! I tried to explain as short as i could.

Answer 1

[Ben Cunningham]

I don't quite follow the use of 'while' here but if I understand correctly then hopefully the following will be useful.

You can parse errors using 'try - catch' then switch based on any errors generated.

So something like :

try 
    % <your parse / create block code>
catch ME
    switch ME.message
        case "can't create a new block"
            % add a "x" at the end of the name of the new block
        case "The name 'On_Off' already exists"
            % add a "x" at the end of the name of the existing block 
        otherwise
            rethrow(ME)
    end
end

[Lucas S]

This can definitively help me but i have to modify all my code so i will think about it. Thanks !