Lubos Vrba wrote:
> Thanks for advice, but I just don't know how use it.
> May be I definition of my problem was pure. I'll try to do it better:
> In next.tcl isn't only one puts commands!
i hope :-)
> I don't want tcl script print some messages!
ok, but i suppose you want to retrieve some value returned by your script
next.tcl?
> I dont want to use some procedures in tcl (if it's possible).
I dont know how to do it without proc ...
> I don't know how to use getResult().toString(), it still returns nothing!
here is the sources i am using (in which getResult().toString() returns
something):
the shell in java:
[...]
// start shell interpretation
while(!theCommand.equals("exit")) {
System.out.print("> ");
// try to readln the command typed
try {
StringBuffer theLineRead = new StringBuffer(
(new BufferedReader(new InputStreamReader(System.in))).readLine()
);
theCommand = theLineRead.toString();
} catch (IOException e ){
e.printStackTrace();
}
// try to evaluate command read
try {
theInterpretor.eval(theCommand);
System.out.println("returned value = '"+
theInterpretor.getResult().toString() + "'");
} catch (TclException e) {
e.printStackTrace();
}
}
[...]
if you use a shell interpreting like that, you can type:
> puts foo
foo
returned value = ''
> return foo
tcl.lang.TclException
at tcl.lang.ReturnCmd.cmdProc(ReturnCmd.java:99)
at tcl.lang.Parser.evalObjv(Parser.java:740)
at tcl.lang.Parser.eval2(Parser.java:1138)
at tcl.lang.Parser.evalTokens(Parser.java:930)
at tcl.lang.Parser.eval2(Parser.java:1125)
at tcl.lang.Interp.eval(Interp.java:1781)
at tcl.lang.Interp.eval(Interp.java:1810)
at com.odisei.application.tcl.ShellTcl.<init>(ShellTcl.java:87)
at com.odisei.application.tcl.ShellTcl.main(ShellTcl.java:34)
> proc bar {} {return foo}
returned value = ''
> bar
foo
returned value = 'foo'
>
I don't know if it helps you, but i means :
- puts do not set the result of the interpretor, it simply prints something on
stdout (then its not interesting)
- retrurn can not be used outside a proc
- if a proc return something, the returned value can be retrieved using
interp.getResult() (then you have to use a proc!)
conclusion, if you want to get a value evaluated by a script, you should write
next.tcl like that:
----------------------------
proc myProc {parameters} {
evalutate whateverYouWant
return theEvaluatedValue
}
myProc {"foo" "bar"}
----------------------------
write in your java shell implementation
theInterpretor.eval("source next.tcl");
System.out.println("returned value = '"+ theInterpretor.getResult().toString()
+ "'");
and you will get the value evaluated by your script. i hope this is a solution
to your problem.
philippe - france
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