Module: CbzTools::SystemDependencies

Defined in:
lib/cbz_tools/system_dependencies.rb

Defined Under Namespace

Classes: MissingExecutableError

Class Method Summary collapse

Class Method Details

.find_executable(name) ⇒ Object 



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# File 'lib/cbz_tools/system_dependencies.rb', line 7

def self.find_executable(name)
  extensions = Gem.win_platform? ? ENV.fetch("PATHEXT", "").split(";") : [""]

  ENV.fetch("PATH", "").split(File::PATH_SEPARATOR).each do |directory|
    extensions.each do |extension|
      path = File.join(directory, "#{name}#{extension}")
      return path if File.file?(path) && File.executable?(path)
    end
  end

  nil
end

.unrar! ⇒ Object 



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# File 'lib/cbz_tools/system_dependencies.rb', line 20

def self.unrar!
  find_executable("unrar") ||
    raise(
      MissingExecutableError,
      "`unrar` is required for CBR conversion but was not found in PATH. " \
      "Install unrar using your system's package manager."
    )
end