Is it possible to define a CAPL function returning a text string?

string syntax capl

Dmitry Grigoryev · Jun 19, 2015 · Viewed 17.3k times · Source

I develop CAPL scripts in Vector CANoe, and I need to define several functions returning text strings. In C, I would write something like this:

char * ErrorCodeToMsg(int code)

char [] ErrorCodeToMsg(int code)

In CAPL, both definitions fail with a parse error. The only working solution I came up with so far is:

variables {
  char retval[256];
}

void ErrorCodeToMsg(int code) {
  char [] msg = "Hello word";
  strncpy(retval, msg, 256);
}

Of course this is very ugly, because each call to ErrorCodeToMsg requires two statements instead of one. Is there a better way?

Answer

You have to do it as you would do with string-based functions :

 void ErrorCodeToMsg(char buffer[], int code){
 buffer = myListOfCodes[code];
 }

The value will be stored in the buffer using its reference value. It is not possible to return string in Capl. This is why you can't access String System variables using the @ Selector.

Is it possible to define a CAPL function returning a text string?

Answer

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