`terraform plan` で変更行("foo" => "bar" みたいなところ)に色つけるやつ

trview

#!/usr/bin/env ruby

re = Regexp.compile(/^\s+.+:\s+"(.*?)" => "(.*?)"$/)

if File.pipe?(STDIN)
  STDIN.each_line do |line|
    line = line.gsub(/\e\[\d{1,3}[mK]/, '').chomp
    m = re.match(line)

    if m && m[1] != m[2]
      puts "\e[31m#{line}\e[0m"
    else
      puts line
    end
  end
end

# Usage
#
#   $ terraform plan | trview

sed 版 http://gongo.hatenablog.com/entry/2016/07/02/113146