gistfile1.js

function uriCompressor() 
	for(var i = 0, this.convArray = []; i <= 61; i++) {
		if(i < 10) {
			this.convArray.push(i)
		} else if(i < 36) {
			this.convArray.push(i.toString(36))
		} else {
			this.convArray.push((i - 26).toString(36).toUpperCase()
		}
	}
	this.character = this.build = this.order = null
}

uriCompressor.prototype.parseURI = function(uri) {
	var parts = uri.split('/'), compressedURI = !!(parts[1] != undefined && parts[1].length !== 28)
	// complete reset before we parse
	this.character = this.build = this.order = null
	if(parts[0] != undefined)
		this.character = parts[0]
	if(parts[1] != undefined)
		this.build = compressedURI ? this.buildDecompress(parts[1]) : parts[1]
	if(parts[2] != undefined)
		this.order = compressedURI ? this.orderDecompress(parts[2]) : parts[2]
}

uriCompressor.prototype.buildCompress = function(build) {
	return parseInt(build, 2).toString(36)
}

uriCompressor.prototype.buildDecompress = function(buildStr) {
	return parseInt(build, 36).toString(2)
}

// @param Array<int>
uriCompressor.prototype.orderCompress = function(order) {
	var res = []
	for(key in order) {
		if(order.hasOwnProperty(key)) 
			res.push(this.convArray[order[key]])
	}
	return res.join('')
}

// @param string
uriCompressor.prototype.orderDecompress = function(orderStr) {
	var order = orderStr.split(''), res = []
	for(key in order) {
		if(order.hasOwnProperty(key))
			res.push(this.convArray.indexOf(order[key]))
	}
	return res
}