Class: Racker::CLI

Inherits:
Object
  • Object
show all
Includes:
LogSupport
Defined in:
lib/racker/cli.rb

Overview

The CLI is a class responsible for handling the command line interface logic.

Constant Summary collapse

STDOUT_TOKEN = 
'-'

Instance Method Summary collapse

Methods included from LogSupport

level=, log4r_level_for, logger, #logger

Constructor Details

#initialize(argv) ⇒ CLI

Returns a new instance of CLI.



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# File 'lib/racker/cli.rb', line 16

def initialize(argv)
  @argv = argv
end

Instance Method Details

#execute! ⇒ Object 



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# File 'lib/racker/cli.rb', line 20

def execute!
  # Parse our arguments
  option_parser.parse!(@argv)

  # Set the logging level specified by the command line
  Racker::LogSupport.level = options[:log_level]

  # Display the options if a minimum of 1 template and an output file is not provided
  if @argv.length < 2
    puts option_parser
    Kernel.exit!(1)
  end

  # Set the output file to the last arg. A single dash can be supplied to
  # indicate that the compiled template should be written to STDOUT. Output
  # to STDOUT assumes the quiet option.
  options[:output] = output = @argv.pop
  logger.debug("Output file set to: #{output}")

  # Output to STDOUT assumes quiet mode
  @options[:quiet] = true if output == STDOUT_TOKEN

  # Set the input files to the remaining args
  options[:templates] = @argv

  # Run through Racker
  logger.debug('Executing the Racker Processor...')
  template = Processor.new(options).execute!

  write(output, template)

  # Thats all folks!
  logger.debug('Processing complete.')
  puts "Processing complete!" unless options[:quiet]
  puts "Packer file generated: #{options[:output]}" unless options[:quiet]

  return 0
end