Class: RubyFromExcel::Process

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(&block) ⇒ Process

Returns a new instance of Process.



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# File 'lib/rubyfromexcel.rb', line 40

def initialize(&block)
  instance_eval(&block) if block
  load_from_checkpoint
end

Instance Attribute Details

#checkpoint_directory ⇒ Object

Returns the value of attribute checkpoint_directory.



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# File 'lib/rubyfromexcel.rb', line 36

def checkpoint_directory
  @checkpoint_directory
end

#convert_independent_of_input_sheets ⇒ Object

Returns the value of attribute convert_independent_of_input_sheets.



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# File 'lib/rubyfromexcel.rb', line 35

def convert_independent_of_input_sheets
  @convert_independent_of_input_sheets
end

#debug_dont_write_checkpoint_after_stage ⇒ Object

Returns the value of attribute debug_dont_write_checkpoint_after_stage.



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# File 'lib/rubyfromexcel.rb', line 38

def debug_dont_write_checkpoint_after_stage
  @debug_dont_write_checkpoint_after_stage
end

#prune_except_output_sheets ⇒ Object

Returns the value of attribute prune_except_output_sheets.



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# File 'lib/rubyfromexcel.rb', line 34

def prune_except_output_sheets
  @prune_except_output_sheets
end

#skip_tests ⇒ Object

Returns the value of attribute skip_tests.



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# File 'lib/rubyfromexcel.rb', line 33

def skip_tests
  @skip_tests
end

#source_excel_directory ⇒ Object

Returns the value of attribute source_excel_directory.



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# File 'lib/rubyfromexcel.rb', line 30

def source_excel_directory
  @source_excel_directory
end

#stage ⇒ Object

Returns the value of attribute stage.



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# File 'lib/rubyfromexcel.rb', line 37

def stage
  @stage
end

#target_ruby_directory ⇒ Object

Returns the value of attribute target_ruby_directory.



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

def target_ruby_directory
  @target_ruby_directory
end

#workbook ⇒ Object

Returns the value of attribute workbook.



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# File 'lib/rubyfromexcel.rb', line 32

def workbook
  @workbook
end

Instance Method Details

#checkpoint(checkpoint_number) ⇒ Object 



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# File 'lib/rubyfromexcel.rb', line 147

def checkpoint(checkpoint_number)
  puts
  if self.stage > checkpoint_number
    puts "Stage #{checkpoint_number} already completed, skipping..."
    return
  else
    puts "Stage #{checkpoint_number}"
  end
  yield
  save_checkpoint if checkpoint_directory  # Then create a check point
  self.stage = checkpoint_number + 1
end

#checkpoint_filename ⇒ Object 



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# File 'lib/rubyfromexcel.rb', line 192

def checkpoint_filename
  File.join(checkpoint_directory,"checkpoint#{self.stage}.marshal")
end

#load_from_checkpoint ⇒ Object 



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# File 'lib/rubyfromexcel.rb', line 172

def load_from_checkpoint
  unless checkpoint_directory
    puts "No checkpoint directory given"
    return false
  end
  checkpoint_filenames = Dir.entries(checkpoint_directory)
  highest_stage_checkpoint = checkpoint_filenames.map { |filename| filename =~ /checkpoint(\d+)/ ? $1.to_i : 0 }.max
  checkpoint_to_open = File.join(checkpoint_directory,"checkpoint#{highest_stage_checkpoint}.marshal")
  unless File.exists?(checkpoint_to_open)
    puts "No checkpoint file found"
    return false
  end
  dumped_objects = Marshal.load(File.open(checkpoint_to_open))
  self.stage = dumped_objects.shift + 1
  self.workbook = dumped_objects.shift
  SheetNames.instance.replace(dumped_objects.shift)
  SharedStrings.instance.replace(dumped_objects.shift)
  puts "Stage #{self.stage-1} checkpoint found and loaded."
end

#prepare_destination_folder ⇒ Object 



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# File 'lib/rubyfromexcel.rb', line 131

def prepare_destination_folder
  FileUtils.mkpath(File.join(target_ruby_directory,'specs'))
  FileUtils.mkpath(File.join(target_ruby_directory,'sheets'))
end

#reset_global_classes ⇒ Object

FIXME: Urgh. Global variables. Need to eliminate these!



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# File 'lib/rubyfromexcel.rb', line 126

def reset_global_classes
  SheetNames.instance.clear
  SharedStrings.instance.clear
end

#save_checkpoint ⇒ Object 



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# File 'lib/rubyfromexcel.rb', line 160

def save_checkpoint
  if debug_dont_write_checkpoint_after_stage && (self.stage > debug_dont_write_checkpoint_after_stage)
    puts "Debug mode: Not writing checkpoint for stage #{checkpoint_number}"
    return
  else
    puts "Writing checkpoint for stage #{self.stage}"
    FileUtils.mkpath(checkpoint_directory)
    objects_to_dump = [self.stage,self.workbook,SheetNames.instance.to_hash,SharedStrings.instance.to_a]
    File.open(checkpoint_filename,'w') { |f| f.puts Marshal.dump(objects_to_dump) }
  end
end

#start!(starting_stage = nil) ⇒ Object 



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# File 'lib/rubyfromexcel.rb', line 49

def start!(starting_stage = nil)
  self.stage = starting_stage || self.stage || 0
  
  checkpoint 0 do
    reset_global_classes
  
    time "Preparing destination folder..." do
      prepare_destination_folder
    end

    time "Loading..." do
      self.workbook = Workbook.new(workbook_filename)
    end
  end

  time "Pruning..." do    
    
    if prune_except_output_sheets || convert_independent_of_input_sheets
      workbook.work_out_dependencies
    end
    
    checkpoint 1 do
      if convert_independent_of_input_sheets
        workbook.convert_cells_to_values_when_independent_of_input_sheets(*convert_independent_of_input_sheets)
      end
    end
    
    checkpoint 2 do
      if prune_except_output_sheets
        workbook.prune_cells_not_needed_for_output_sheets(*prune_except_output_sheets)
      end
    end
    
  end
    
  time "Workbook contains #{workbook.worksheets.size} sheets:\n" do
    
    checkpoint 3 do
      puts "0) Generating ruby for the workbook"
      write "spreadsheet.rb" do
        workbook.to_ruby
      end
    end

    checkpoint 4 do
      i = 0
      workbook.worksheets.each do |variable_name, worksheet|
        time "#{i+=1}) Generating ruby for #{variable_name}..." do
          write 'sheets', "#{variable_name}.rb" do
            worksheet.to_ruby
          end
        end
      end
    end

    checkpoint 5 do
      unless skip_tests
        i = 0
        workbook.worksheets.each do |variable_name, worksheet|
          time "#{i+=1}) Generating spec for #{variable_name}..." do
            write 'specs',"#{variable_name}_rspec.rb" do
              worksheet.to_test
            end
          end
        end
      end # skip tests
    end # 5 
    
  end
  
  unless skip_tests
    puts "Running tests of generated files"
    puts `rspec -fp #{File.join(target_ruby_directory,'specs',"*")}`
  end
end

#time(message) ⇒ Object 



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# File 'lib/rubyfromexcel.rb', line 196

def time(message)
  print message
  STDOUT.flush
  start_time = Time.now
  yield
  puts "took #{(Time.now-start_time).to_i} seconds."
end

#workbook_filename ⇒ Object 



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# File 'lib/rubyfromexcel.rb', line 45

def workbook_filename
  File.join(source_excel_directory,'xl','workbook.xml')
end

#write(*filenames) ⇒ Object 



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# File 'lib/rubyfromexcel.rb', line 136

def write(*filenames)
  target_filename = File.join(target_ruby_directory,*filenames)
  if checkpoint_directory && !debug_dont_write_checkpoint_after_stage && File.exists?(target_filename)
    print "skipping #{File.basename(target_filename)}, already exists and checkpoints are on..."
    return nil
  end
  File.open(target_filename,'w') do |f|
    f.puts yield.to_s
  end
end