Class: TreeRb::CliJson

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

Constant Summary collapse

SUCCESS = 
0
FAILURE = 
1

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.run ⇒ Object 



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# File 'lib/tree_rb/cli/cli_json.rb', line 12

def self.run
  self.new.parse_args(ARGV)
end

Instance Method Details

#options_parser(options) ⇒ Object 



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# File 'lib/tree_rb/cli/cli_json.rb', line 16

def options_parser(options)
  parser        = OptionParser.new
  parser.banner = 'Usage: rjson.rb [options] [directory]'
  parser.separator 'pretty format json file'
  parser.separator 'Code https://github.com/tokiro/treevisitor. Feedback to [email protected]'

  parser.on('-o [FILE]', '--output [FILE]', String) do |v|
    if options[:output]
      puts 'only one file of output can be used'
      options[:exit] = true
    end
    options[:output] = v
  end

  options[:force_overwrite_output] = false
  parser.on('--force', 'overwrite output') do
    options[:force_overwrite_output] = true
  end
  parser.on_tail('--help', 'Show this message') do
    puts parser
    options[:exit] = SUCCESS
  end

  parser.on_tail("--version", "Show the version") do
    puts "tree.rb version #{TreeRb::VERSION}"
    options[:exit] = SUCCESS
  end

  parser
end

#parse_args(argv) ⇒ Object 



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# File 'lib/tree_rb/cli/cli_json.rb', line 47

def parse_args(argv)
  options = { :verbose => true, :force => false, :output_plugins => 'build-dir' }
  parser  = options_parser(options)

  begin
    rest = parser.parse(argv)
  rescue OptionParser::InvalidOption => e
    $stderr.puts e.to_s
    $stderr.puts "try --help for help"
    return FAILURE
  rescue OptionParser::MissingArgument => e
    $stderr.puts e.to_s
    $stderr.puts "try --help for help"
    return FAILURE
  end

  unless options[:exit].nil?
    return options[:exit]
  end

  ##
  ## option: output, force
  ##
  output = $stdout
  if options[:output]
    filename = options[:output]
    if File.exist?(filename) and not options[:force_overwrite_output]
      $stderr.puts "catalog '#{filename}' exists use --force to overwrite"
      return FAILURE
    end
    output = File.open(filename, "w")
    $stderr.puts "Writing file '#{filename}'"
  end

  if rest.length < 1
    $stderr.puts 'missing arg'
    return FAILURE
  else
    filename = rest[0]
  end

  show_input = false

  unless File.exists?(filename)
    $stderr.puts "input file not exists '#{filename}'"
    exit
  end

  my_json_str = File.read(filename)

  if show_input
    $stderr.puts '*************************'
    $stderr.puts my_json_str
    $stderr.puts '*************************'
  end

  begin
    my_json = JSON(my_json_str)
  rescue JSON::ParserError
    $stderr.puts 'json is malformed'
    return FAILURE
  end

  output.puts JSON.pretty_generate(my_json)

  SUCCESS
end