#!/usr/bin/ruby

def loud_system(command)
  $stderr.puts command
  system command or raise
end

releaseName = ARGV[0]
releaseTag = releaseName.gsub(/(\d)(\w)/, '\1_\2').gsub('.', '_')
IO.popen('svn info') do |svn|
  svn.each_line do |line|
    if line =~ /Repository Root:\s*(\S*)/
      SVN = $1
      break
    end
  end
end

TRUNK = File.join(SVN, 'trunk')
TAG   = File.join(SVN, 'tags', releaseTag)

loud_system "svn cp -m 'Releasing #{releaseName}' #{TRUNK} #{TAG}"