Subj : Re: possible Rhino bug with long lined scripts?
To   : Igor Bukanov <igor3@apochta.com>
From : Jon Collis <joncollisusa@netscape.net>
Date : Fri May 09 2003 08:06 am



Igor Bukanov wrote:
> Jon Collis wrote:
> 
>> Sorry about the confusion.
>>
>> I am reading the script in from the web. It is in an HTML page which I 
>> store in a string. When I come across a script, I use 
>> String.substring() to cut it out of the HTML text and then pass it on 
>> to Rhino. Here is the  line of code in which I add the script:
>>
>> Object o = contex.evaluateString(scope, js, "", 1, null);
>>
> 
> I tried the attched program which reads the suplied file into string and 
>  call cx.evaluateString(scope, js, "", 1, null); and got no errors after 
> running
> java Test longlines.js
> 
> BTW, which encoding do you use to convert HTML to String?
> 
> Regards, Igor
> 
> 
> ------------------------------------------------------------------------
> 
> import java.io.*;
> import org.mozilla.javascript.*;
> 
> 
> public class Test {
> 
> 	
> 	static String readAll(Reader r) throws IOException {
> 		char[] buffer = new char[4096];
> 		int offset = 0;
> 		for (;;) {
> 			int n = r.read(buffer, offset, buffer.length - offset);
> 			if (n < 0) { break; }
> 			offset += n;
> 			if (offset == buffer.length) {
> 				char[] tmp = new char[buffer.length * 2];
> 				System.arraycopy(buffer, 0, tmp, 0, offset);
> 				buffer = tmp;
> 			}
> 		}
> 		return new String(buffer, 0, offset);
> 	}
> 	
> 	public static void main(String[] args)
> 		throws Exception
> 	{
> 		Context cx = Context.enter();
> 		try {
> 			Scriptable scope = cx.initStandardObjects(null);
> 			byte[] array = new byte[4096];
> 			Reader r = new InputStreamReader(new FileInputStream(args[0]));
> 			String js;
> 			try {
> 				js = readAll(r);
> 			} finally {
> 				r.close();
> 			}
> 			cx.evaluateString(scope, js, "", 1, null); 
> 		} finally { 
> 			Context.exit();
> 		}
> 	}
> }


Thanks for the code sample for testing. Well, I compared this to what I 
was doing and found that the only difference was that I was setting the 
language version like so:

// Set version to JavaScript1.2 so that we get object-literal style
// printing instead of "[object Object]"
cx.setLanguageVersion(Context.VERSION_1_2);

I think that I must have got this from an example that came with Rhino, 
but it was causing this problem as well as some other weird anomalies. I 
went ahead and commented it out..

Thank you for all the help,
Jon Collis

.