Subj : Re: Executing a line of C code in javascript
To   : Heath Raftery <hraftery@myrealbox.com>
From : Brendan Eich <brendan@meer.net>
Date : Thu Aug 21 2003 12:54 pm

Heath Raftery wrote:

>I noticed that previously in comp.lang.javascript, people have claimed 
>that C++/C functions are tricky to execute in javascript, possibly 
>requiring ActiveX interfaces or JNI work. However, Mozilla seems to do 
>it fine.
>

Yeah, we don't need no steeking Active X! ;-)

>So, how would I achieve this without including most of mozilla in my 
>application? Is there a simpler way of achieving the same? I just want 
>to resolve a host name! Or even simpler - I just want to parse a PAC 
>file!
>

Did you read the http://www.mozilla.org/js/spidermonkey/ docs, 
especially the embedding tutorial?  Or look at js.c?  You can write a 
native function pretty easily.  It's the thing that takes the (JSContext 
*cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) parameters and 
returns a JSBool (false means you reported an error or set a pending 
exception, true means it succeeded).

/be

.