history_filtered.rb

#!/usr/bin/env ruby
# frozen_string_literal: true

require 'bundler/inline'
require 'resolv'
require 'uri'

gemfile do
  gem 'dry-cli', branch: 'master', git: 'https://github.com/dry-rb/dry-cli', require: 'dry/cli/inline'
end

def history_files
  %w[.bash_history .zsh_history].map do |file|
    history_file = File.join(ENV['HOME'], file)
    File.read(history_file, encoding: 'iso-8859-1') if File.exist?(history_file)
  end
end

option :skip, aliases: %w[s],desc: 'Skip matching commands', type: :array
option :expression, aliases: %w[e], desc: 'Pass your expression to filter any match'

run do |**options|
  history_files.each do |file|
    file.each_line do |line|
      next if options[:skip]&.map { |cmd| line.include?(cmd) }&.any?

      line = line.gsub(/(\S+)=\S+/, '\1=[FILTERED_VALUE]')
      line = line.gsub(Resolv::IPv4::Regex, '[FILTERED_IP]')
      line = line.gsub(Resolv::IPv6::Regex, '[FILTERED_IP]')
      line = line.gsub(URI::DEFAULT_PARSER.make_regexp, '[FILTERED_URI]')
      line = line.gsub(URI::MailTo::EMAIL_REGEXP, '[FILTERED_EMAIL]')

      begin
        line = line.gsub(/#{options[:expression]}/, '[FILTERED_DATA]') if options[:expression]
      rescue RegexpError => e
        puts "#{e.class}: #{e.message}"
        exit(1)
      end

      puts line
    end
  end
end