htmlparser-user

[Htmlparser-user] Bug in HTMLFrameTag ?

[Elodie T. <et...@in...>]

Hi,

I want to modify attributes of some HTMLTags that I get. I'm using the following code just to see how the parser works. The problem is that it doesn't detect the <frame> tags, although it gets the other tags (a, img, frameset). I tested it with a HTML document that have 2 or 3 frame tags, and it sees none of them !

What can I do ?

Thanx in advance for your help.



HTMLReader htmlReader = new HTMLReader ( buffer, len );
HTMLParser parser = new HTMLParser(htmlReader);
parser.registerScanners();

HTMLEnumeration e = parser.elements();
while ( e.hasMoreNodes() ) {

  HTMLNode node = e.nextHTMLNode();
			
  	if ( node instanceof HTMLLinkTag) {
	   logger.debug ( " href = " + ((HTMLLinkTag) node).getLink() );
	} else {
	   if ( node instanceof HTMLImageTag) {
		logger.debug ( " srcImg = " + ((HTMLImageTag) node).getImageURL() );
	   } else {
		if ( node instanceof HTMLFrameSetTag) {
		   logger.debug ( " srcFrameSet = " + ((HTMLFrameSetTag) node).getFrameLocation() );
		} else {
		   if ( node instanceof HTMLFrameTag) {
			logger.debug ( " srcFrame = " + ((HTMLFrameSetTag) node).getFrameLocation() );
		   } else {
			if ( node instanceof HTMLTag)
		        	logger.debug ( " HTMLTag = " + ( (HTMLTag) node).toHTML() );
		   }
		}
	   }
	}
}

Re: [Htmlparser-user] Bug in HTMLFrameTag ?

[Elodie T. <et...@in...>]

I answer to myself ;o) I think I've found the source of my problem.
I've added :

parser.addScanner( new HTMLFrameSetScanner() );
parser.addScanner( new HTMLFrameScanner() );

to my code, and it seems to work now.
But I've discored another problem : if there is one or many <frameset> tags included in a <frameset>, they are not detected (only the <frame> tags).

Could someone confirm me that, or I'm totally wrong ?

Thanx.




> Hi,
> 
> I want to modify attributes of some HTMLTags that I get. I'm using the following code just to see how the parser works. The problem is that it doesn't detect the <frame> tags, although it gets the other tags (a, img, frameset). I tested it with a HTML document that have 2 or 3 frame tags, and it sees none of them !
> 
> What can I do ?
> 
> Thanx in advance for your help.
> 
> 
> 
> HTMLReader htmlReader = new HTMLReader ( buffer, len );
> HTMLParser parser = new HTMLParser(htmlReader);
> parser.registerScanners();
> 
> HTMLEnumeration e = parser.elements();
> while ( e.hasMoreNodes() ) {
> 
>   HTMLNode node = e.nextHTMLNode();
> 			
>   	if ( node instanceof HTMLLinkTag) {
> 	   logger.debug ( " href = " + ((HTMLLinkTag) node).getLink() );
> 	} else {
> 	   if ( node instanceof HTMLImageTag) {
> 		logger.debug ( " srcImg = " + ((HTMLImageTag) node).getImageURL() );
> 	   } else {
> 		if ( node instanceof HTMLFrameSetTag) {
> 		   logger.debug ( " srcFrameSet = " + ((HTMLFrameSetTag) node).getFrameLocation() );
> 		} else {
> 		   if ( node instanceof HTMLFrameTag) {
> 			logger.debug ( " srcFrame = " + ((HTMLFrameSetTag) node).getFrameLocation() );
> 		   } else {
> 			if ( node instanceof HTMLTag)
> 		        	logger.debug ( " HTMLTag = " + ( (HTMLTag) node).toHTML() );
> 		   }
> 		}
> 	   }
> 	}
> }
> 
> 
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> 

Re: [Htmlparser-user] Bug in HTMLFrameTag ?

[Somik R. <so...@ya...>]

--- Elodie Tasia <et...@in...> wrote:
> I answer to myself ;o) I think I've found the source
> of my problem.
> I've added :
> 
> parser.addScanner( new HTMLFrameSetScanner() );
> parser.addScanner( new HTMLFrameScanner() );
> 
> to my code, and it seems to work now.
> But I've discored another problem : if there is one
> or many <frameset> tags included in a <frameset>,
> they are not detected (only the <frame> tags).
> 
> Could someone confirm me that, or I'm totally wrong
> ?

There are many ways to get to the child tags. Here are
some :
Assuming you have got the first frameset tag
for (SimpleEnumeration e =
firstFrameSetTag.children(); e.hasMoreNodes(); ) {
	HTMLNode node = e.nextNode();
	if (node instanceof HTMLFrameSetTag) {
		HTMLFrameSetTag frameSetTag =
			(HTMLFrameSetTag)node;
	}
	if (node instanceof HTMLFrameTag) {
		HTMLFrameTag frameTag =
			(HTMLFrameTag)node;	
	}
}

ALTERNATIVELY:
If you are only interested in frameset tags,
parser = new HTMLParser(..);
parser.registerScanners();
HTMLNode [] frameSetTags =
	parser.extractAllNodesThatAre(HTMLFrameSetTag.class);

If you are interested in both frameset and frame, a
cleaner approach is :
public class MyParserVisitor extends HTMLVisitor {
	public void visitTag(HTMLTag tag) {
		if (tag.getTagName().equals("FRAMESET") ||
		    tag.getTagName().equals("FRAME") {
			// Do what you want to do.
		}
	}
	public void get..() {
	}
}

parser = new HTMLParser(..);
MyParserVisitor myParserVisitor = new
MyParserVisitor();
parser.visitAllNodesWith(myParserVisitor);
myParserVisitor.get..();

Regards,
Somik

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[Htmlparser-user] FrameTag : why wouldn't be there a setFrameLocation ?

[Elodie T. <et...@in...>]

Hi,

I noticed that some of the Tag classes have a method that permit to modify (or I guess they do) the "source" attribute (like href or src). These methods are, for example : setBaseURL,  setImageURL, setLink...

It seems perfect to me, as I have to modify all relative path in a html... but I can't find method that set source location in a frame tag, nor in an input tag (when type=image).

What can I do ? Would it be too complex for me if I tried to add such a method in the HTMLFrameTag class ?

Regards,
Elodie

[Htmlparser-user] strip comments HTML source

[Aminudin K. <ami...@mi...>]

Hi,

Is there any  way / class  that could  strip all comments from HTML 
source and  produce plain and clean HTML source without any comment .

Thanks