Module: KnifeCloudformation::Utils::PathSelector

Included in:
Chef::Knife::CloudformationImport
Defined in:
lib/knife-cloudformation/utils/path_selector.rb

Overview

Helper methods for path selection

Instance Method Summary collapse

Instance Method Details

#humanize_path_basename(path) ⇒ String

Humanize the base name of path

Parameters:

  • path (String)

Returns:

  • (String) 


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# File 'lib/knife-cloudformation/utils/path_selector.rb', line 13

def humanize_path_basename(path)
  File.basename(path).sub(
    File.extname(path), ''
  ).split(/[-_]/).map(&:capitalize).join(' ')
end

#prompt_for_file(directory, opts = {}) ⇒ String

Prompt user for file selection

Parameters:

  • directory (String) —

    path to directory

  • opts (Hash) (defaults to: {}) —

    options

Options Hash (opts):

  • :ignore_directories (Array<String>) —

    directory names

  • :directories_name (String) —

    title for directories

  • :files_name (String) —

    title for files

  • :filter_prefix (String) —

    only return results matching filter

Returns:

  • (String) —

    file path



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# File 'lib/knife-cloudformation/utils/path_selector.rb', line 28

def prompt_for_file(directory, opts={})
  file_list = Dir.glob(File.join(directory, '**', '**', '*')).find_all do |file|
    File.file?(file)
  end
  if(opts[:filter_prefix])
    file_list = file_list.find_all do |file|
      file.start_with?(options[:filter_prefix])
    end
  end
  directories = file_list.map do |file|
    File.dirname(file)
  end.uniq
  files = file_list.find_all do |path|
    path.sub(directory, '').split('/').size == 2
  end
  if(opts[:ignore_directories])
    directories.delete_if do |dir|
      opts[:ignore_directories].include?(File.basename(dir))
    end
  end
  if(directories.empty? && files.empty?)
    ui.fatal 'No formation paths discoverable!'
  else
    output = ['Please select an entry']
    output << '(or directory to list):' unless directories.empty?
    ui.info output.join(' ')
    output.clear
    idx = 1
    valid = {}
    unless(directories.empty?)
      output << ui.color("#{opts.fetch(:directories_name, 'Directories')}:", :bold)
      directories.each do |dir|
        valid[idx] = {:path => dir, :type => :directory}
        output << [idx, humanize_path_basename(dir)]
        idx += 1
      end
    end
    unless(files.empty?)
      output << ui.color("#{opts.fetch(:files_name, 'Files')}:", :bold)
      files.each do |file|
        valid[idx] = {:path => file, :type => :file}
        output << [idx, humanize_path_basename(file)]
        idx += 1
      end
    end
    max = idx.to_s.length
    output.map! do |o|
      if(o.is_a?(Array))
        "  #{o.first}.#{' ' * (max - o.first.to_s.length)} #{o.last}"
      else
        o
      end
    end
    ui.info "#{output.join("\n")}\n"
    response = ask_question('Enter selection: ').to_i
    unless(valid[response])
      ui.fatal 'How about using a real value'
      exit 1
    else
      entry = valid[response.to_i]
      if(entry[:type] == :directory)
        prompt_for_file(entry[:path], opts)
      else
        "/#{entry[:path]}"
      end
    end
  end
end