#!/usr/bin/env ruby

require 'isna'

STDIN.each_line do |stack_line|
  filepath, line = stack_line.split(':')
  puts ''
  puts '-' * 80
  puts "file: #{filepath}" 
  puts "line: #{line}" 

  line = line.to_i
  range_left = ((line - 5)..line).to_a
  range_right = (line..(line + 5)).to_a
  full_range = (range_left + range_right).sort

  if File.exist?(filepath)
    file_line = 0
    File.read(filepath).each_line do |fline|
      file_line += 1
      if full_range.include?(file_line)
        if line == file_line
          r = "%10.f | %s" % [file_line, fline]
          puts r.chomp.to_ansi.red.to_s
        else
          puts "%10.f | %s" % [file_line, fline]
        end
      end
    end
  end
end