Copy Config Files

copy_config_files

#!/usr/bin/env ruby
require 'find'
require 'fileutils'

def main
  example_files = gather_example_files(ARGV[1])

  case ARGV[0]
  when 'copy' then copy_and_rename(example_files)
  when 'validate' then validate_config_files_presence(example_files)
  else
    raise "Unknown option\n
    Usage: copy_config_files <command> <path>\n
    Commands:
    copy: finds all files in the given path ending in '.example', copies them, and renames them, omitting the '.example'
    validate: finds all files in the given path ending in '.example' and ensures that a copy exists with a name that lacks '.example'"
  end
end

def gather_example_files(dir)
  config_files = []
  Find.find("#{dir}") do |path|
    config_files << path if path =~ /.*\.example$/
  end
  config_files
end

def copy_and_rename(files)
  files.each do |src_file|
    dest_file = strip_example(src_file)
    FileUtils.copy(src_file, dest_file) unless File.exists?(dest_file)
  end
end

def validate_config_files_presence(files)
  valid = true
  files.each do |org_file|
    new_file = strip_example(org_file)
    valid = false unless File.exists?(new_file)
  end
  exit false unless valid
end

def strip_example(file)
  file.sub(/\.example$/, '')
end

main()