hadoop0202.rb

require 'formula'

class Hadoop0202 < Formula
  url 'http://archive.apache.org/dist/hadoop/common/hadoop-0.20.2/hadoop-0.20.2.tar.gz'
  homepage 'http://hadoop.apache.org/'
  sha1 'c15d89f8f379e5ef242e36a881e45e79c934bfd7'

  keg_only "Conflicts with hadoop in core."

  def shim_script target
    <<-EOS.undent
    #!/bin/bash
    exec #{libexec}/bin/#{target} $*
    EOS
  end

  def install
    rm_f Dir["bin/*.bat"]
    libexec.install %w[bin conf lib webapps contrib]
    libexec.install Dir['*.jar']
    bin.write_exec_script Dir["#{libexec}/bin/*"]
    # But don't make rcc visible, it conflicts with Qt
    (bin/'rcc').unlink

    inreplace "#{libexec}/conf/hadoop-env.sh",
      "# export JAVA_HOME=/usr/lib/j2sdk1.5-sun",
      "export JAVA_HOME=\"$(/usr/libexec/java_home)\""
  end

  def caveats; <<-EOS.undent
    In Hadoop's config file:
      #{libexec}/conf/hadoop-env.sh
    $JAVA_HOME has been set to be the output of:
      /usr/libexec/java_home
    EOS
  end
end