Class: FlatKit::Cli

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

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Cli

Returns a new instance of Cli.



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

def initialize
  @parser = nil
end

Instance Attribute Details

#options ⇒ Object (readonly)

Returns the value of attribute options.



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

def options
  @options
end

Class Method Details

.commands_banner ⇒ Object 



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# File 'lib/flat_kit/cli.rb', line 42

def self.commands_banner
  sorted_commands = FlatKit::Command.children.sort_by{ |c| c.name }
  left_width = sorted_commands.map { |c| c.name.length }.sort.last
  banner = StringIO.new
  banner.puts
  banner.puts "Commands:"
  banner.puts

  sorted_commands.each do |command|
    banner.puts "  #{command.name.ljust(left_width)}    #{command.description}"
  end
  banner.string
end

Instance Method Details

#parser ⇒ Object 



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# File 'lib/flat_kit/cli.rb', line 12

def parser
  @parser ||= ::Optimist::Parser.new do
    version ::FlatKit::VERSION

    banner "fk v#{self.version}"

    banner <<~USAGE

    Usage:
      fk <command> [<args>...]
      fk [options]
    USAGE

    banner <<~OPTIONS

    Options:

    OPTIONS

    opt :verbose, "Force debug. Output lots of informtion to standard error", default: false
    opt :list, "List all the commands", default: false, short: :none
    opt :log, "Set the logger output location", default: "<stderr>", short: :none
    opt :help, "Show help message", short: :h
    opt :version, "Print version and exit", short: :none

    stop_on FlatKit::Command.names
    banner Cli.commands_banner
  end
end

#run(argv: ARGV, env: ENV) ⇒ Object 



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

def run(argv: ARGV, env: ENV)
  opts = ::Optimist::with_standard_exception_handling(parser) do
    parser.parse(argv)
  end

  if opts[:log_given] then
    ::FlatKit.log_to(opts[:log])
  end

  if opts[:verbose] then
    ::FlatKit.logger.level = :debug
  else
    ::FlatKit.logger.level = :info
  end

  ::FlatKit.logger.debug opts
  ::FlatKit.logger.debug argv

  command_name  = argv.shift
  if command_name.downcase == "help" then
    parser.educate
    exit 0
  end

  command_klass = FlatKit::Command.for(command_name)
  if command_klass.nil? then
    $stdout.puts "ERROR: Unknown command '#{command_name}'"
    parser.educate
    exit 0
  end

  command       = command_klass.new(argv: argv, logger: ::FlatKit.logger, env: env)
  command.call
end