DTangler -> Flare Converter. Converts DTangler cmdline output to the JSON format understood used by Flare

converter.rb

class Item
	def initialize(name, *deps)
		@name = name
		@deps = deps || []
	end
	
	def name
		@name
	end
	
	def deps
		@deps
	end
	
	def to_s
		name
	end
end

class DSM
	
	def initialize
		@items = []
	end

	def items
		@items
	end
	
	def parse(dtangle_output)
		tmp_deps = {}
		
		# parse lines and create items
		dtangle_output.each_line do |line|
			md = /^\s*(\d+)\s+(.*)\s\(\s*(\d+)\)\s\|(.*)\|$/.match line
			if (md)
				row_item_idx = md[1].to_i
				row_item_name = md[2]
				row_item_num_subitems = md[3].to_i
				row_item_cols = md[4]
				
				#puts "add item: #{row_item_idx} #{row_item_name} #{row_item_num_subitems}"
				item = Item.new (row_item_name)
				@items << item
				
				# for each column remember the dependencies in tmp_deps
				row_item_cols.split('|').each_with_index do |col_value, col_idx|
					next if (col_value.empty? || col_value.include?('#'))
					num_deps = col_value.strip.gsub('C','').to_i
					if (num_deps > 0)
						col_item_idx = col_idx+1
						#puts " item(#{col_item_idx}) has #{num_deps} dependencies on #{item}"		
						(tmp_deps[col_item_idx] ||= []) << row_item_idx
					end
				end
			end
		end
		
		# establish dependencies
		tmp_deps.each_pair do |col_item_idx, row_item_idxs|
			row_item_idxs.each do |row_item_idx|
				@items[col_item_idx-1].deps << @items[row_item_idx-1]
			end
		end
	end
end

def to_flare_json(items)
	s = String.new
	s << "var data = [\n"
	items.each do |item|
		s << "{\"name\":\"#{format(item)}\", \"size\":0, \"imports\":["
		item.deps.each do |dep|
			s << "\"#{format(dep)}\","
		end
		s << "]},\n"
	end
	s << "];"
	s
end

def format(item)
	# for jars filenames -> use only filename
	# item.name.gsub('.jar','_jar').gsub(/.*\\([^\\]+_jar)/, '\1')
	# for package names -> show only last 4 levels of nesting
	item.name #.gsub(/^\.\.\.?/,'').split('.')[0..3].join('.')
end


dsm = DSM.new
# dsm.parse IO.read('mnet-dependencies-jar-level.txt')
dsm.parse IO.read('mnet-dependencies-package-level.txt')
puts to_flare_json(dsm.items.sort {|x,y| x.name <=> y.name })