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Is there a way to to assign command line parameters to capsule attributes? [message #1754265]

Wed, 15 February 2017 17:19

Eclipse User

I use a capsule attribute to store a delay value for timeouts used in transitions in the state machine. I want to run the application with different delays passed via the command line. Is there a way to do that? Smile

Re: Is there a way to to assign command line parameters to capsule attributes? [message #1754356 is a reply to message #1754265]

Thu, 16 February 2017 12:13

Eclipse User

Hi. There are a couple of utility functions in the API to access command-line arguments. They are defined in umlrtmain.hh, as static methods of the UMLRTMain class.

The useful ones are these:

    // Get the number of user command-line arguments.
    static int getArgCount ( );

    // Get the i-th command-line argument.
    static const char * getArg ( int index );

    static int argCount ( ) { return argc; }
    static const char * * argStrings ( ) { return argv; }

So in your capsule you should add, under the Properties View->Profile, the "CapsuleProperties" stereotype, and in the "headerPreface" add the following statement:

#include "umlrtmain.hh"

Then in your action code you can use them. For example, you can do:

const char *arg1 = UMLRTMain::getArg(1);

Re: Is there a way to to assign command line parameters to capsule attributes? [message #1777127 is a reply to message #1754356]

Fri, 24 November 2017 13:37

Eclipse User

One correction and one addition appear necessary:

const char *arg1 = UMLRTMain::getArg(1);

should be

const char *arg1 = UMLRTMain::getArg(0);

Also, on the command line invoke the executable using the '-u' command line option as in, e.g.,

$ ./TopMain.exe -u 3

Re: Is there a way to to assign command line parameters to capsule attributes? [message #1777137 is a reply to message #1777127]

Fri, 24 November 2017 15:15

Eclipse User

Would that be a good addition to define a service port to do that rather than using C++ functions?

Nicolas

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