Writing Attribute

Writing Attribute
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+Writing an attribute is similar to writing text to a new element. In + this case, we'll add a reference URI to our + document. Full code:Appendix F, Code for Add Attribute Example.

+ A reference is a child of the story + element, so finding the place to put our new element and attribute is + simple. As soon as we do the error-checking test in our + parseDoc, we are in the right spot to add our + element. But before we do that, we need to make a declaration using a + data type we have not seen yet: +

+	xmlAttrPtr newattr;
+

+ We also need an extra xmlNodePtr: +

+	xmlNodePtr newnode;
+

+ The rest of parseDoc is the same as before until we + check to see if our root element is story. If it is, + then we know we are at the right spot to add our element: + +

+	 newnode = xmlNewTextChild (cur, NULL, "reference", NULL);
+	 newattr = xmlNewProp (newnode, "uri", uri);	
+

First we add a new node at the location of the current node + pointer, cur. using the xmlNewTextChild function.

Once the node is added, the file is written to disk just as in the + previous example in which we added an element with text content.

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