<HTML>
<HEAD>
<TITLE>XML to DOM Converter Listing 2</TITLE>
<APPLET CODE=com.ms.xml.dso.XMLDSO.class WIDTH=100% HEIGHT=30 ID=xmldso MAYSCRIPT=true>
<PARAM NAME="url" VALUE="someXMLDocument.xml">
</APPLET>
</HEAD>
<BODY>
<SCRIPT>
_root = xmldso.getDocument().root
results = window.document;
// Simple stack ADT
function stack()
{
this.depth = 0;
this.data = new Array();
this.push = push;
this.pop = pop;
this.popTop = popTop;
this.length = length;
this.exists = exists;
return this;
}
// Add an item
function push( item )
{
this.data[ this.depth ++ ] = item;
}
// Remove last item
function pop()
{
if ( this.depth )
{
this.depth --;
return this.data[ this.depth ];
}
return null;
}
// Remove item at head of stack
function popTop()
{
if ( this.depth )
{
// Pop the top item
_j = this.data[ 0 ];
this.depth --;
// Shuffle the stack up a place
for ( _i = 0; _i < this.depth; _i ++ )
{
this.data[ _i ] = this.data[ _i + 1 ]
}
return _j;
}
return null;
}
// Return the size of the stack
function length()
{
return this.depth;
}
// Does the stack hold the specified item?
function exists( obj )
{
for ( _i = 0; _i < this.depth; _i ++ )
{
if ( this.data[ _i ] == obj )
{
return true;
}
}
return false;
}
// Cache the XML root
var root = document.applets.xmldso.getDocument().root;
// Holds XML node objects
var x = new stack();
// Holds incremental document description tags
var y = new stack();
x.push( root );
y.push( "document." + root.tagname + "." );
while ( x.length() != 0 )
{
// Pop top items
var xmlTag = x.popTop();
var docTag = y.popTop();
// If the XML node is a leaf, assign its DOM equivalent its
// textual value; otherwise create a new DOM object
var docString = docTag.substring( 0, docTag.length - 1 ) +
" = ";
// Write out a DOM representation
if ( xmlTag.children.length != 0 )
docString += "new " + xmlTag.tagname + "();<br>";
else
docString += "'" + xmlTag.text + "';<br>";
window.document.writeln( docString );
// Stack children of this XML node
if ( xmlTag.children )
{
// Might seem logical to cache xmlTag.children, but if you
// do XMLDSO won't work properly
for ( i = 0; i < xmlTag.children.length; i ++ )
{
x.push( xmlTag.children.item( i ) );
// How many instances of a given child node at this
// level?
var numInstances = -1;
for ( j = 0; j < xmlTag.children.length; j ++ )
{
if ( xmlTag.children.item( i ).tagName ==
xmlTag.children.item( j ).tagName )
numInstances ++;
}
// Get instance index for current node
var thisInstance = -1;
for ( j = 0; j < i + 1; j ++ )
{
if ( xmlTag.children.item( j ).tagname ==
xmlTag.children.item( i ).tagname )
thisInstance ++;
}
if ( numInstances > 1 )
{
y.push( docTag + xmlTag.children.item( i )
.tagname + "[ " + thisInstance + " ]." );
}
else
{
y.push( docTag + xmlTag.children.item( i )
.tagname + "." );
}
}
}
}
</SCRIPT>
</BODY>
</HTML>
Script Junkie | An XML Document to JavaScript Object Converter (Web Techniques,
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