Class: Launchy::Cli

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Cli

Returns a new instance of Cli.



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# File 'lib/launchy/cli.rb', line 7

def initialize
  @options = {}
end

Instance Attribute Details

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/launchy/cli.rb', line 6

def options
  @options
end

Instance Method Details

#error_output(error) ⇒ Object 



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# File 'lib/launchy/cli.rb', line 75

def error_output( error )
  $stderr.puts "ERROR: #{error}"
  Launchy.log "ERROR: #{error}"
  error.backtrace.each do |bt|
    Launchy.log bt
  end
  $stderr.puts "Try `#{parser.program_name} --help' for more information."
  return false
end

#good_run(argv, env) ⇒ Object 



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# File 'lib/launchy/cli.rb', line 66

def good_run( argv, env )
  if parse( argv, env ) then
    Launchy.open( argv.shift, options ) { |e| error_output( e ) }
    return true
  else
    return false
  end
end

#parse(argv, env) ⇒ Object 



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# File 'lib/launchy/cli.rb', line 59

def parse( argv, env )
  parser.parse!( argv )
  return true
rescue ::OptionParser::ParseError => pe
  error_output( pe )
end

#parser ⇒ Object 



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# File 'lib/launchy/cli.rb', line 11

def parser
  @parser ||= OptionParser.new do |op|
    op.banner = "Usage: launchy [options] thing-to-launch"

    op.separator ""
    op.separator "Launch Options:"

    op.on( "-a", "--application APPLICATION", 
           "Explicitly specify the application class to use in the launch") do |app|
      @options[:application] = app
    end

    op.on( "-d", "--debug", 
           "Force debug. Output lots of information.") do |d|
      @options[:debug] = true
    end

    op.on( "-e", "--engine RUBY_ENGINE",
           "Force launchy to behave as if it was on a particular ruby engine.") do |e|
      @options[:ruby_engine] = e
    end

    op.on( "-n", "--dry-run", "Don't launchy, print the command to be executed on stdout" ) do |x|
      @options[:dry_run] = true
    end

    op.on( "-o", "--host-os HOST_OS", 
           "Force launchy to behave as if it was on a particular host os.") do |os|
      @options[:host_os] = os
    end


    op.separator ""
    op.separator "Standard Options:"

    op.on( "-h", "--help", "Print this message.") do |h|
      $stdout.puts op.to_s
      exit 0
    end

    op.on( "-v", "--version", "Output the version of Launchy") do |v|
      $stdout.puts "Launchy version #{Launchy::VERSION}"
      exit 0
    end

  end
end

#run(argv = ARGV, env = ENV) ⇒ Object 



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# File 'lib/launchy/cli.rb', line 85

def run( argv = ARGV, env = ENV )
  exit 1 unless good_run( argv, env )
end