JS XML Parser

generic recursive XML parsing.js

var indent_level = 0

function indent()
{
    var spaces = ""
    for( var i=0; i<indent_level; ++i)
        spaces = spaces + " "
    return spaces
}

function get_attributes( node,output,is_root)
{
    indent_level++
    var node_name = node.get( "nodeName")
    var attributes = node.get( "attributes")
    var length = attributes.get( "length")

    if( is_root) node_name = "root"

    for( var i = 0; i < length; ++i)
    {
        var attr = attributes.get( "item", i)
        var attr_name = attr.get( "nodeName")
        var attr_value = attr.get( "nodeValue")

        output[ attr_name] = attr_value
    }
    indent_level--
}

function recurse_children( node, output)
{
    indent_level++

    var child_nodes = node.get( "childNodes")
    var length = child_nodes.get( "length")

    for( var i = 0; i < length; ++i)
    {
        var c_node = child_nodes.get( "item", i)
        var c_name = c_node.get( "nodeName")
        var c_index = 0

        // add text nodes as value of parent node (output)
        if( c_name == '#text')
        {
            output._value_ = c_node.get( "nodeValue")
        }
        // skip comment nodes and other crap
        if( c_name[0] == '#') continue

        if( output[ c_name] == undefined){
            output[ c_name] = []
        }

        var index = output[ c_name].length
        output[ c_name][index] = []
        get_attributes( c_node, output[ c_name][index] )
        recurse_children( c_node, output[ c_name][index] )
    }
    indent_level--
}

function getNodeValue( node, searchValue){
    var child_nodes = node.getElementsByTagName( searchValue)
    var first_element = child_nodes.get( "item",0)
    var first_element_text = first_element.get( "text")
    //print ("first_element_text = " + first_element_text)
    return first_element_text
}

function ParseXML( file_name, root)
{
    var file = new File()
    file.Open( file_name)
    var text = file.Read()

    var doc = new ActiveX( "Microsoft.XMLDOM")
    doc.loadXML( text)
    var root_node = doc.get( "documentElement")
    recurse_children( root_node, root)
    doc.close;
}

// This is just a print function to show the output
// after compressing all of the data into array format
function recurse_nodes( node, display)
{
    for( x in node){
        new_display = display + x
        if( node[x] != '')
            print( new_display + " = " + node[x] + "\n")
        recurse_nodes( node[x], new_display + ".")
    }
}

function TestParser(file_path, printToLog)
{
    // Initialize the "root" array
    var root = new Array();

    ParseXML( file_path, root)

    // After all of the parsing pass root into the print function
    if (printToLog)
        recurse_nodes( root, "root.")

    // examples of how to get values out of the hash
    print( "*_*_*_*_*_*_*_*_*_*_*_*_*_*" + "\n");

    return root;
}

implementation.js

var root = new Array();
    
ParseXML(working_input_file, root)
var numProjects = root["project"].length

input.xml

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<run  id="13AM1202050" attribute_1="none">
  <project seq="1" id="13AMBC799">
    <l_plate id="A13BEE11213465"/>
    <e_block id="M13AMZ12025001"/>
    <e_block id="M13AMZ12025002"/>
  </project>
  <project seq="2" id="13AMBC797">
    <l_plate id ="A13BEE11213480"/>
    <e_block id="M13AMZ12025002" />
    <e_block id="M13AMZ12025001" />
    <e_block id="M13AMZ12025002" />
    <e_block id="M13AMZ12025001" />
  </project>
  <project seq="3" id="13AMBC796">
    <l_plate id="A13BEE11213502" />
    <e_block id="M13AMZ12025002" />
    <e_block id="M13AMZ12025001" />
    <e_block id="M13AMZ12025002" />
    <e_block id="M13AMZ12025001" />
    <e_block id="M13AMZ12025002" />
  </project>
</run>