solr.rb

require 'formula'
require 'fileutils'

SOLR_START_SCRIPT = <<-end_script
#!/bin/sh
if [ -z "$1" ]; then
  echo "Usage: $ solr path/to/config/dir"
else 
  cd %s/example && java -Dsolr.solr.home=$1 -jar start.jar
fi
end_script

class Solr <Formula
  url 'http://apache.deathculture.net/lucene/solr/1.4.0/apache-solr-1.4.0.tgz'
  head 'http://svn.apache.org/repos/asf/lucene/dev/trunk/'
  homepage 'http://lucene.apache.org/solr/'
  if ARGV.include? "--HEAD"
    depends_on 'apache-ant'
  else
    md5 '1cc3783316aa1f95ba5e250a4c1d0451'
  end

  
  def download_strategy
    if ARGV.include? "--HEAD"
      SubversionDownloadStrategy
    else
      super()
    end
  end
  
  def install
    prefix.mkpath
    old_dir = Dir.pwd
    begin
      if ARGV.include? "--HEAD"
        Dir.chdir('solr')
        system('ant dist')
        Dir.mkdir('example/webapps') unless File.exists?('example/webapps')
        warfile = Dir['dist/apache-solr-*.war'].first
        FileUtils.copy(warfile,'example/webapps/solr.war')
      end
      Dir.mkdir('example/logs') unless File.exists?('example/logs')
      system('touch example/logs/solr.log')
      prefix.install Dir['*']
    ensure
      Dir.chdir(old_dir)
    end
    (bin+'solr').write(SOLR_START_SCRIPT % prefix)
  end

  def caveats
    <<-END_CAVEATS
To start solr: 
    $ solr path/to/solr/config/dir

See the solr homepage for more setup information:
    $ brew home solr

    END_CAVEATS
  end
end