Ruby script for creating new Tapestry 5 projects

One thing with building lots of demos for upcoming presentations, labs, & etc. is that I'm having to use mvn archetype:create a lot and that command line is just hideous.

So I took a deep breath, stepped back, and wrote a Ruby script, newproj to simplify the process:

#!/usr/bin/ruby

require 'getoptlong'

opts = GetoptLong.new(
  [ "--group", "-g", GetoptLong::REQUIRED_ARGUMENT ],
  [ "--artifact", "-a", GetoptLong::REQUIRED_ARGUMENT ],
  [ "--package", "-p", GetoptLong::OPTIONAL_ARGUMENT ],
  [ "--version", "-v", GetoptLong::OPTIONAL_ARGUMENT ]
)

group = nil
artifact = nil
package = nil
version = "1.0.0-SNAPSHOT"
error = false

begin
  opts.each do | opt, arg |
    case opt
      when "--group" 
        group = arg
      when "--artifact" 
        artifact = arg
      when "--package" 
        package = arg
      when "--version" 
        version = arg
    end
end
rescue GetoptLong::Error
  error = true
end

if error || ARGV.length != 0 || group == nil || artifact == nil
  puts "newproj: --group groupId --artifact arifactId [--package package] [--version version]"
  exit 0
end

package = package || "#{group}.#{artifact}"

command = "mvn archetype:create -DarchetypeGroupId=org.apache.tapestry -DarchetypeArtifactId=quickstart -DarchetypeVersion=5.0.3"
command << " -DgroupId=#{group} -DartifactId=#{artifact} -DpackageName=#{package} -Dversion=#{version}"

puts command

Kernel::exec(command)

I'll eventually add to this; it needs the option to control the mvn -o (offline) flag, and further in the future, the ability to choose the correct archetype (once we add more than just quickstart). But this sure beats copying and pasting out of the documentation, like I've been doing.