Class: MozConfig::TUI

Inherits:
Object
  • Object
show all
Defined in:
lib/mozconfig.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ TUI

Returns a new instance of TUI.



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# File 'lib/mozconfig.rb', line 12

def initialize
  check_options

  unless File.exist?("mozconfig")
    $stderr.puts "Error: mozconfig not found."
    exit 1
  end

  # Fix whitespace-only lines and split by paragraph, then each paragraph
  # into lines
  @mozconfig = File.read("mozconfig")
    .gsub(/^\s+$/, "")
    .split(/\n{2,}/)
    .map { |p| p.lines.map(&:strip_beginning) }

  # Only paragraphs that begin with a comment are recognized as configs;
  # anything else will remain active globally.
  configs, @globals = @mozconfig.partition { |p| p.first.commented? }
  # Form configs into a hash with the names as keys
  @configs = configs.to_h { |cfg| [cfg.first.uncomment.strip, cfg[1..]] }
  # Globals won't be manipulated further so we can rejoin them
  @globals.map!(&:join)

  # Find the active config
  @active = @configs.find { |_, options| !options.first.commented? }.first
end

Instance Method Details

#run ⇒ Object 



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# File 'lib/mozconfig.rb', line 39

def run
  selection = begin
    TTY::Prompt.new.select("Pick a configuration", @configs, default: @active)
  rescue TTY::Reader::InputInterrupt
    $stderr.puts "\nProcess interrupted. Closing"
    exit 130
  end

  output = "#{@globals.join("\n\n")}\n\n"

  output << @configs.map do |name, options|
    action = options == selection ? :uncomment : :comment
    "#{name.comment}\n#{options.map(&action).join}"
  end.join("\n\n")

  File.write("mozconfig", output)
end