Re: Property resolution in a task

[Upayavira]

[EMAIL PROTECTED] wrote:
Ok, that comes from a guy who works more on DOM-Nodes than me (=nothing) :-)
Should we add that to Project class? (If we are allowed to do that)
Christoper's code required a little work, but here's a method that 
works, should you choose to add it to the Project class.

I now have a Cocoon xpatch task that is successfully replacing 
properties, which will be extremely helpful to us I think.

Regards, Upayavira
   private void replaceProperties(Node n) throws DOMException {
      
       NamedNodeMap attrs = n.getAttributes();
       if (attrs!=null) {
           for (int i = 0; i< attrs.getLength(); i++) {
               Node attr = attrs.item(i);
               
attr.setNodeValue(getProject().replaceProperties(attr.getNodeValue()));    
           }
       }
       switch (n.getNodeType()) {
           case Node.ATTRIBUTE_NODE:
           case Node.CDATA_SECTION_NODE:
           case Node.TEXT_NODE: {
               
n.setNodeValue(getProject().replaceProperties(n.getNodeValue()));
               break;
           }
           case Node.DOCUMENT_NODE:
           case Node.DOCUMENT_FRAGMENT_NODE:
           case Node.ELEMENT_NODE: {
               Node child = n.getFirstChild();
               while (child != null) {
                   replaceProperties(child);
                   child = child.getNextSibling();
               }
               break;
           }
           default: {
               // ignore all other node types
           }
       }
   }

Jan
 

-----Original Message-----
From: Upayavira [mailto:[EMAIL PROTECTED]
Sent: Monday, November 17, 2003 1:02 PM
To: Ant Developers List
Subject: Re: Property resolution in a task
Christopher Lenz wrote:
   

It should be much more efficient (and probably simpler) to just 
traverse the DOM and replace properties in-place:
     

Splendid! This job gets easier by the moment!
Thanks for that.
Regards, Upayavira
   

 public void replaceProperties(Node n) throws DOMException {
   switch (n.getNodeType()) {
     case Node.ATTR_NODE:
     case Node.CDATA_SECTION_NODE:
     case Node.TEXT_NODE: {
       
     

n.setValue(getProject().replaceProperties(n.getNodeValue()));
   

       break;
     }
     case Node.DOCUMENT_NODE:
     case Node.DOCUMENT_FRAGMENT_NODE:
     case Node.ELEMENT_NODE: {
       Node child = n.getFirstChild();
       while (child != null) {
         replaceProperties(child);
         child = child.getNextSibling();
       }
       break;
     }
     default: {
       // ignore all other node types
     }
   }
 }
[disclaimer: this is all untested code]
-chris
[EMAIL PROTECTED] wrote:
     

Is there an Ant way to 'spider' a DOM node, replacing 
         

properties as 
   

it goes?
         

I donīt know such a thing. But you can do:
- write the DOM to a String
- use Project.replace() on that String
- parse the String
- replace the DOM with new one
Jan
       

     

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