Class: CodePicture::Cli

Inherits:

Object

• Object
• CodePicture::Cli

Defined in:

lib/code_picture/cli.rb,
lib/code_picture/cli/options.rb,
lib/code_picture/cli/commands/help.rb,
lib/code_picture/cli/commands/version.rb,
lib/code_picture/cli/commands/take_picture.rb,
lib/code_picture/cli/commands/result/failure.rb,
lib/code_picture/cli/commands/result/success.rb

Defined Under Namespace

Modules: Commands

Constant Summary

Options =

Data.define(:command, :command_options) do
  def self.empty = new(command: nil, command_options: Commands::TakePicture::Options.default)

  def self.from(argv)
    options = Cli::Options.empty

    opt_parser = OptionParser.new do |parser|
      parser.banner = "Usage: code-picture path-to-file.rb [options]"

      parser.on("-p", "--pixel-size=SIZE", Integer, "Define the pixel size of the generated image") do |size|
        command_options = options.command_options.with(pixel_size: size)
        options = options.with(command_options:)
      end

      parser.on("-r", "--max-pixels-per-row=SIZE", Integer, "Define the maximum number of pixels per row") do |size|
        command_options = options.command_options.with(max_pixels_per_row: size)
        options = options.with(command_options:)
      end

      parser.on("-t", "--theme=THEME", String, "Define the theme of the generated image [options: one-dark-pro (default), random, or a path to a YAML file]") do |theme|
        command_options = options.command_options.with(theme: theme)
        options = options.with(command_options:)
      end

      parser.on("-o", "--output=FILE", String, "Write the generated image to the given file path") do |file|
        command_options = options.command_options.with(output_file_path: file)
        options = options.with(command_options:)
      end

      parser.on("-v", "--version", "Displays app version") do
        options = options.with(command: Commands::Version, command_options: nil)
      end
      parser.on("-h", "--help", "Prints this help") do
        options = Cli::Options.new(
          command: Commands::Help,
          command_options: Commands::Help::Options.new(help_text: parser.to_s)
        )
      end
    end

    begin
      opt_parser.parse!(argv)
    rescue OptionParser::InvalidOption
      options = Cli::Options.new(
        command: Commands::Help,
        command_options: Commands::Help::Options.new(help_text: opt_parser.to_s)
      )
    end

    if (input_file_path = argv.first)
      options.with(
        command: Commands::TakePicture,
        command_options: options.command_options.with(input_file_path:)
      )
    elsif options.command.nil?
      options.with(
        command: Commands::Help,
        command_options: Commands::Help::Options.new(
          error: "Missing input file path",
          help_text: opt_parser.to_s
        )
      )
    else
      options
    end
  end
end

Instance Method Summary

• #call(argv) ⇒ Object

Instance Method Details

#call(argv) ⇒ Object

# File 'lib/code_picture/cli.rb', line 5

def call(argv)
  Options
    .from(argv)
    .then { _1.command.call(_1.command_options) }
end