Add a fake host for development purposes (See related posts)

#!/usr/local/bin/ruby

HOSTS_FILE = "/etc/hosts"
VHOSTS_FILE = "/Library/Apache2/conf/extra/httpd-vhosts.conf"

if $*.size < 2
  puts %{addhost.rb - creates a fake domain and bind it to the working rails app
    
USAGE: addhost development_hostname mongrel_port

Example: if you have a rails app on a localhost:3002 and you want
         to bind it to the myrailsapp.dev than run:
         addhost myrailsapp.dev 3002
  }
  
  exit 1
end

dev_host = $*[0]
mongrel_port = $*[1]

# Adding to the hosts file (absolute path must be in the HOSTS_FILE; usually /etc/hosts)
unless IO.read(HOSTS_FILE) =~ /^127.0.0.1\t#{dev_host}$/
  File.open(HOSTS_FILE, "a") do |file|
    file << "\n127.0.0.1\t#{dev_host}"
  end
end

unless IO.read(VHOSTS_FILE) =~ /^\tServerName #{dev_host}$/
  File.open(VHOSTS_FILE, "a") do |file|
    file << %{
<VirtualHost *:80>
  ServerName #{dev_host}
  
  ProxyPass / http://#{dev_host}:#{mongrel_port}/
  ProxyPassReverse / http://#{dev_host}:#{mongrel_port}
  ProxyPreserveHost on
</VirtualHost>
    }
  end
end