Class: CloudInfo::CLI

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

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(args) ⇒ CLI 



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# File 'lib/cloud_info/cli.rb', line 19

def initialize(args)
  @args = args.dup
end

Instance Attribute Details

#args ⇒ Object (readonly)

The array of (unparsed) command-line options



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

def args
  @args
end

#options ⇒ Object (readonly)

The hash of (parsed) command-line options



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# File 'lib/cloud_info/cli.rb', line 17

def options
  @options
end

Class Method Details

.run(args) ⇒ Object 



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# File 'lib/cloud_info/cli.rb', line 8

def self.run(args)
  cli = new(args)
  cli.parse_options!
  cli.run
end

Instance Method Details

#extract_environment_variables! ⇒ Object

Extracts name=value pairs from the remaining command-line arguments and assigns them as environment variables.



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# File 'lib/cloud_info/cli.rb', line 73

def extract_environment_variables! #:nodoc:
  args.delete_if do |arg|
    next unless arg.match(/^(\w+)=(.*)$/)
    ENV[$1] = $2
  end
end

#option_parser ⇒ Object

Return an OptionParser instance that defines the acceptable command line switches for cloud_info, and what their corresponding behaviors are.



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# File 'lib/cloud_info/cli.rb', line 26

def option_parser
  # @logger = Logger.new
  @option_parser ||= OptionParser.new do |opts|
    opts.banner = "Usage: #{File.basename($0)} [options] action ..."
    
    opts.on("-d", "--debug",
      "Debug mode, more output"
    ) { |value| options[:debug] = true }
    
    opts.on("-u", "--user USER",
      "ssh user"
    ) { |value| options[:user] = value }
    
    opts.on("-h", "--help", "Display this help message.") do
      puts opts
      exit
    end

    opts.on("-V", "--version",
      "Display the cloud_info version, and exit."
    ) do
      require 'cloud_info/version'
      puts "CloudInfo v#{CloudInfo::Version}"
      exit
    end

  end
end

#parse_options! ⇒ Object 



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# File 'lib/cloud_info/cli.rb', line 55

def parse_options!
  @options = {:actions => []}
  
  if args.empty?
    warn "Please specifiy an action to execute."
    warn option_parser
    exit 1
  end
  
  option_parser.parse!(args)
  coerce_variable_types!
  extract_environment_variables!
  
  options[:actions].concat(args)
end

#run ⇒ Object 



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# File 'lib/cloud_info/cli.rb', line 80

def run
  puts "TODO FINISH LOGIC"
  pp options
end