Module: Grump::Plugin::Maven

Defined in:
lib/grump-maven.rb

Instance Method Summary collapse

Instance Method Details

#download(url) ⇒ Object 



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# File 'lib/grump-maven.rb', line 14

def download(url)
  FileUtils.mkdir_p(@temp)
  d = Digest::MD5.hexdigest(url)
  if File.exists?("#{@temp}/#{d}")
    return File.read("#{@temp}/#{d}")
  end
  temp = nil
  open(url) do |io|
    temp = io.read
  end
  File.open("#{@temp}/#{d}", "w") do |file|
    file.write(temp)
  end
  temp
end

#maven(*args) ⇒ Object 



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# File 'lib/grump-maven.rb', line 30

def maven(*args)
  (@maven ||= []) << args.join(':')
end

#maven_artifact(dependency) ⇒ Object 



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# File 'lib/grump-maven.rb', line 38

def maven_artifact(dependency)
  group, artifact, version = dependency.split(':')
  File.join(maven_root, group.gsub('.','/'), artifact, version,  artifact + '-' + version)
end

#maven_download ⇒ Object 



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# File 'lib/grump-maven.rb', line 97

def maven_download
  FileUtils.mkdir_p(@java_libs)
  maven_tree.each do |dependency|
    jar = maven_jar(dependency)
    file = File.join(@java_libs, File.basename(jar))
    `curl -o #{file} #{jar}` unless File.exists?(file)
  end
end

#maven_jar(dependency) ⇒ Object 



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# File 'lib/grump-maven.rb', line 47

def maven_jar(dependency)
  maven_artifact(dependency) + '.jar'
end

#maven_latest(dependency) ⇒ Object 



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# File 'lib/grump-maven.rb', line 51

def maven_latest(dependency)
  group, artifact = dependency.split(':')
  xml = download(File.join(maven_root, group.gsub('.','/'), artifact, 'maven-metadata.xml'))
  xml = REXML::Document.new(xml)
  (REXML::XPath.match(xml, '/metadata/versioning/latest').first || REXML::XPath.match(xml, '/metadata/version').first).text
end

#maven_plugin_setup ⇒ Object 



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# File 'lib/grump-maven.rb', line 9

def maven_plugin_setup
  plugin(:java)
  @temp = File.join(path, '.grump', 'temp')
end

#maven_pom(dependency) ⇒ Object 



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# File 'lib/grump-maven.rb', line 43

def maven_pom(dependency)
  maven_artifact(dependency) + '.pom'
end

#maven_root ⇒ Object 



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# File 'lib/grump-maven.rb', line 34

def maven_root
  'http://central.maven.org/maven2'
end

#maven_subst(xml, str) ⇒ Object 



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# File 'lib/grump-maven.rb', line 58

def maven_subst(xml, str)
  str.gsub(/\$\{([^\}]+)\}/) { |var| var = var.split('.').last; REXML::XPath.match(xml, "/project/parent/#{var}").first.text }
end

#maven_tree ⇒ Object 



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# File 'lib/grump-maven.rb', line 62

def maven_tree
  @maven.each do |artifact|

    xml = download(maven_pom(artifact))
    xml = REXML::Document.new(xml)

    REXML::XPath.match(xml, '/project/dependencies/dependency').each do |dependency|

      next if dependency.elements['optional'] && dependency.elements['optional'].text == 'true'
      next if dependency.elements['scope'] && dependency.elements['scope'].text == 'test'

      group = dependency.elements['groupId'].text
      group = maven_subst(xml, group)

      artifact = dependency.elements['artifactId'].text
      artifact = maven_subst(xml, artifact)

      if dependency.elements['version']
        version = dependency.elements['version'].text
        version = maven_subst(xml, version)
      else
        version = maven_latest(group + ':' + artifact)
      end

      id = "#{group}:#{artifact}:#{version}"

      unless @maven.include?(id)
        maven(group, artifact, version)
      end
    end

  end
  @maven
end