NHProf Ruby Update script

# Note that the unzip app that i'm using is in my path from an Oracle installation.
# You can get unzip here: http://info-zip.org/UnZip.html and put it in your path
# Or replace the `unzip -o #{zipfile}` command with the unzip command line of your choice

# Personally, I also have an update.bat file which I use to run this script which I have indexed in launchy 

require 'uri'
require 'net/http'
require 'fileutils'

def get_http
	return Net::HTTP.start("builds.hibernatingrhinos.com")
end

def download(link, zipfile)
	puts link
	Net::HTTP.start(URI.parse(link).host) do |http|
		file = open(zipfile, "wb")
		resp = http.get(URI.parse(link).path)
		file.write(resp.body)
		file.close
	end
end

def unzip(zipfile)
	`unzip -o #{zipfile}`
end

def get_redirected_filename(link)
	new_link = ""
	get_http.get(link).body.split("\r\n").each do |line|
		if (line.index("a href").nil? == false)
			new_link = line.split("\"")[1]
		end
	end
	return new_link
end

def download_and_unzip(link, zipfile)
	FileUtils.rm zipfile if (File.exists?(zipfile))
	redirected_filename = get_redirected_filename(link.split("\"")[1])
	download(redirected_filename, zipfile)
	unzip zipfile
end

resp = get_http.get("/builds/NHProf")

is_not_downloaded = true
resp.body.split("\r\n").each do |line|
	if (line.index("NHibernate.Profiler-Build").nil? == false && is_not_downloaded)
		download_and_unzip line, "nhprof.zip"
		is_not_downloaded = false
	end
end