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Loic_aigon
Loic_aigon
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[JS CS3] BridgeTalk : bt.body = x.toSource() vs a bt.body = a String

Jul 27, 2009 1:26 PM

Hi,

I found a script on this page

http://d.hatena.ne.jp/kamiseto/

 

The author uses this line :

bt.body = toInDesign.toSource()+"("+contents.toSource()+","+gb.toSource()+","+kumi.toSource()+");";

I tried to use this syntax and my script didn't produce any result.

I found another approach based on an old Harbs's post. The syntax is like :
theScript = "...";
theScript += "...";
bt.body = theScript;
And it runs well.

However, as I don't like to saty ignorant, what is the reason of the toSource() error ?

Thanks in advance for explanation.

Loic

612 Views   4 Replies   Latest reply: Loic_aigon, Jul 28, 2009 5:05 AM
 
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  • [Jongware]
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    1. [Jongware],
    Jul 27, 2009 3:00 PM   in reply to Loic_aigon
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    It looks to me as if "toSource" uses a single static buffer!

     
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  • Loic_aigon
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    2. Loic_aigon,
    Jul 28, 2009 1:45 AM   in reply to [Jongware]
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    Hi Jongware,

     

    I needed the help of the engineers of my office to understand what was a single static buffer :-) but accordingly to their explanation, your guess is relevant.

     

    The only doubt that stays deals with the nature of the buffer error (dynamic/static or buffer overflow).

     

    As the web page was japanese, maybe the poster was explaining it did'nt get any result with this toSource() method after all !. Nevertheless, I get my script working with the string approach and that's what is important to me. But as I said I didn't want to stay ignorant and you gave me a good input.

     

    Thanks Jongware !

     

    Loic

     
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  • [Jongware]
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    3. [Jongware],
    Jul 28, 2009 3:34 AM   in reply to Loic_aigon
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    I tried to write a sample to show this kind of error in pure javascript, using something like

     

    var buf;
alert ("What happens now? "+fn("a", buf)+fn("b", buf));
newstr = "And now?"+fn("c", buf);
newstr += fn("d", buf);
alert (newstr);
function fn (str, dest)
{
 dest = "["+str+"]";
 return dest;
}

     

    -- but I couldn't get it not to work ...

     

    I recognized the symptoms because I also write in the programming language C/C++, and there it's perfectly possible to mess up a program with such constructions. Done that a dozen times and more. I think the correct approach of writing such routines is called "thread-safe" (since the same problem occurs in a multi-threading environment, where each function needs a buffer for itself, even if that same function is called twice).

     

    Oh, enough with the side tracking.

     
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  • Loic_aigon
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    4. Loic_aigon,
    Jul 28, 2009 5:05 AM   in reply to [Jongware]
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    Woaw, that's a lesson ;-)

     

    Thans l a lot for taking time to explain things a bit further. As I am not a genuine coder, this kind of considerations is new to me but you help me going through it.

    Thanks for your care.

    Loic

     
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