Class: Launchy::Cli

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

Overview

Internal: Command line interface for Launchy

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 11

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 9

def options
  @options
end

Instance Method Details

#error_output(error) ⇒ Object 



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# File 'lib/launchy/cli.rb', line 70

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."
  false
end

#good_run(argv, env) ⇒ Object 



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# File 'lib/launchy/cli.rb', line 63

def good_run(argv, env)
  return false unless parse(argv, env)

  Launchy.open(argv.shift, options) { |e| error_output(e) }
  true
end

#parse(argv, _env) ⇒ Object 



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# File 'lib/launchy/cli.rb', line 56

def parse(argv, _env)
  parser.parse!(argv)
  true
rescue ::OptionParser::ParseError => e
  error_output(e)
end

#parser ⇒ Object 



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# File 'lib/launchy/cli.rb', line 15

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("-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 80

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