class Covered::Summary

def print_partial_summary(output = $stdout, before: 4, after: 4)
	statistics = Statistics.new
	
	self.each do |coverage|
		line_offset = 1
		output.puts "", Rainbow(coverage.path).bold.underline
		
		counts = coverage.counts
		
		File.open(coverage.path, "r") do |file|
			file.each_line do |line|
				range = Range.new([line_offset - before, 0].max, line_offset+after)
				
				if counts[range]&.include?(0)
					count = counts[line_offset]
					
					prefix = "#{line_offset} ".rjust(8) + "#{count} ".rjust(8)
					
					if count == nil
						output.write prefix
						output.write Rainbow(line).faint
					elsif count == 0
						output.write Rainbow(prefix).background(:darkred)
						output.write Rainbow(line).red
					else
						output.write Rainbow(prefix).background(:darkgreen)
						output.write Rainbow(line).green
					end
					
					# If there was no newline at end of file, we add one:
					unless line.end_with? $/
						output.puts
					end
				end
				
				line_offset += 1
			end
		end
		
		coverage.print_summary(output)
	end
	
	output.puts
	@statistics.print_summary(output)
end