Class: Constancy::CLI::PullCommand

Inherits:
Object
  • Object
show all
Defined in:
lib/constancy/cli/pull_command.rb

Class Method Summary collapse

Class Method Details

.pull_dir(diff) ⇒ Object 



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# File 'lib/constancy/cli/pull_command.rb', line 41

def pull_dir(diff)
  diff.items_to_change.each do |item|
    case item.op
    when :create
      print "CREATE".bold.green + " " + item.display_filename
      begin
        FileUtils.mkdir_p(File.dirname(item.filename))
        # attempt to write atomically-ish
        tmpfile = item.filename + ".constancy-tmp"
        File.open(tmpfile, "w") do |f|
          f.write(item.remote_content)
        end
        FileUtils.move(tmpfile, item.filename)
        puts "   OK".bold
      rescue => e
        puts "   ERROR".bold.red
        puts "  #{e}"
      end

    when :update
      print "UPDATE".bold.blue + " " + item.display_filename
      begin
        # attempt to write atomically-ish
        tmpfile = item.filename + ".constancy-tmp"
        File.open(tmpfile, "w") do |f|
          f.write(item.remote_content)
        end
        FileUtils.move(tmpfile, item.filename)
        puts "   OK".bold
      rescue => e
        puts "   ERROR".bold.red
        puts "  #{e}"
      end

    when :delete
      print "DELETE".bold.red + " " + item.display_filename
      begin
        File.unlink(item.filename)
        puts "   OK".bold
      rescue => e
        puts "   ERROR".bold.red
        puts "  #{e}"
      end

    else
      if Constancy.config.verbose?
        STDERR.puts "constancy: WARNING: unexpected operation '#{item.op}' for #{item.display_filename}"
        next
      end

    end
  end
end

.pull_file(diff) ⇒ Object 



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# File 'lib/constancy/cli/pull_command.rb', line 95

def pull_file(diff)
  # build and write the file
  filename_list = diff.items_to_change.collect(&:filename).uniq
  if filename_list.length != 1
    raise Constancy::InternalError.new("Multiple filenames found for a 'file' type sync target. Something has gone wrong.")
  end
  filename = filename_list.first
  display_filename = filename.trim_path

  if File.exist?(filename)
    print "UPDATE".bold.blue + " " + display_filename
  else
    print "CREATE".bold.green + " " + display_filename
  end

  begin
    FileUtils.mkdir_p(File.dirname(filename))
    # attempt to write atomically-ish
    tmpfile = filename + ".constancy-tmp"
    File.open(tmpfile, "w") do |f|
      f.write(diff.final_items.to_yaml)
    end
    FileUtils.move(tmpfile, filename)
    puts "   OK".bold
  rescue => e
    puts "   ERROR".bold.red
    puts "  #{e}"
  end
end

.run(args) ⇒ Object 



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# File 'lib/constancy/cli/pull_command.rb', line 7

def run(args)
  Constancy::CLI.configure
  STDOUT.sync = true

  Constancy.config.sync_targets.each do |target|
    diff = target.diff(:pull)

    diff.print_report

    if not diff.any_changes?
      puts
      puts "Everything is in sync. No changes need to be made to this sync target."
      next
    end

    puts
    puts "Do you want to pull these changes?"
    print "  Enter '" + "yes".bold + "' to continue: "
    answer = args.include?('--yes') ? 'yes' : gets.chomp

    if answer.downcase != "yes"
      puts
      puts "Pull cancelled. No changes will be made to this sync target."
      next
    end

    puts
    case target.type
    when :dir then self.pull_dir(diff)
    when :file then self.pull_file(diff)
    end
  end
end