Class: Jank::Janker

Inherits:
Object
  • Object
show all
Defined in:
lib/janker.rb

Instance Method Summary collapse

Constructor Details

#initialize(config) ⇒ Janker

Returns a new instance of Janker.



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# File 'lib/janker.rb', line 6

def initialize(config)
  @config = config
end

Instance Method Details



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# File 'lib/janker.rb', line 10

def link
  return false if !@config.janked
  mark_janked_package
  sync_packages
  true
end

#location_of_package(pkg) ⇒ Object 



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# File 'lib/janker.rb', line 31

def location_of_package(pkg)
  local_gp = nil
  path = nil

  # Find location in gopath
  (@config.janked_gopaths + @config.gopaths).each do |gp|
    path = "#{gp}/src/#{pkg}"
    next if !File.exist?(path) || !File.directory?(path)
    local_gp = gp
    break
  end

  return "" if local_gp == nil

  # Translate path if janked
  root = "#{local_gp}/src"
  dir = path
  janked_path = nil
  janked_location = nil

  while dir != root
    jankfile = "#{dir}/JANKED"
    if File.exist?(jankfile)
      janked_path = dir
      janked_location = File.read(jankfile)
      break
    end

    dir = File.realpath("#{dir}/..")
  end

  if janked_path != nil
    return path.gsub(/^#{janked_path}/, janked_location)
  end

  return path
end

#mark_janked_package ⇒ Object 



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# File 'lib/janker.rb', line 85

def mark_janked_package
  if @config.janked_local_path.start_with? @config.janked_gopath
    raise "Trying to link a package already inside the gopath!"
  end

  FileUtils.mkdir_p(@config.janked_gopath)
  File.open("#{@config.janked_gopath}/JANKED", 'w') {|f| f.write(@config.janked_local_path) }
end

#package_for_location(path) ⇒ Object 



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# File 'lib/janker.rb', line 24

def package_for_location(path)
  Dir.chdir(File.realpath(path)) do
    conf = Config.new
    return conf.package
  end
end

#rsync(src, dest) ⇒ Object 



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# File 'lib/janker.rb', line 116

def rsync(src, dest)
  return if src == dest

  exclude = %w{JANKED .bzr .bzringore .hg .hgignore .git .gitignore .nfs}
  opts = "--delete"
  exclude.each {|e| opts += " --exclude #{e}"}

  `rsync -az #{opts} "#{src}/" "#{dest}"`
end

#sync_packages ⇒ Object 



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# File 'lib/janker.rb', line 100

def sync_packages
  walk_janked_packages do |package, local_path, go_path|
    if File.exist?(local_path) && File.directory?(local_path) && ! File.symlink?(local_path)
      rsync(local_path, go_path)
    else
      FileUtils.rm_rf(go_path)
    end
  end
end

#unlink ⇒ Object 



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# File 'lib/janker.rb', line 17

def unlink
  return false if !@config.janked
  unmark_janked_package
  sync_packages
  true
end

#unlink_all ⇒ Object 



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# File 'lib/janker.rb', line 110

def unlink_all
  walk_janked_packages do |package, local_path, go_path|
    FileUtils.rm_rf(go_path)
  end
end

#unmark_janked_package ⇒ Object 



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# File 'lib/janker.rb', line 94

def unmark_janked_package
  if File.exist?(@config.janked_gopath)
    FileUtils.rm_rf(@config.janked_gopath)
  end
end

#walk_janked_packages ⇒ Object 



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# File 'lib/janker.rb', line 69

def walk_janked_packages
  @config.gopaths.each do |gp|
    Find.find("#{gp}/src") do |path|
      next if !FileTest.directory?(path)
      Find.prune if File.basename(path).start_with? '.'

      janked_file = "#{path}/JANKED"
      if File.exist?(janked_file)
        package = path.slice(gp.length+5..path.length)
        yield package, File.read(janked_file), path
        Find.prune
      end
    end
  end
end