readTree

<!-- Read tree from indented file --> 
<script>
var data = {}

var x = new XMLHttpRequest()
x.open('get', 'classicmodels.tree')
x.overrideMimeType('text/plain')
x.onload = function(){
	var stack = [-1];
	var ids = [ null ];
	var id = 0;
	for(var line of x.response.split(/\r?\n/g)){
		var p = line.search(/\S/)
		if(p==stack[stack.length-1]){
			stack.pop()
			ids.pop()
		}
		if(p>=stack[stack.length-1]){
			stack.push(p)
			ids.push(id++)
		}
		while(p<stack[stack.length-1]){
			stack.pop()
			ids.pop()
		}
		if(p>=0){
			var parent = ids[ids.length-1]
			if(parent){
				data[id] = { parent: parent, child: [], text: line.trim() }
				data[parent].child.push(id)
			}else
				data[id] = { child: [], text: line.trim() }
		}
	}
	console.log(data)
}
x.send()

</script>