Class: Testjour::CLI::Parser

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

Class Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Class Attribute Details

.commands ⇒ Object

Returns the value of attribute commands.



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

def commands
  @commands
end

Class Method Details

.register_command(klass) ⇒ Object 



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# File 'lib/testjour/cli.rb', line 28

def register_command(klass)
  @commands << klass
end

Instance Method Details

#command_klass ⇒ Object 



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# File 'lib/testjour/cli.rb', line 47

def command_klass
  self.class.commands.detect do |command_klass|
    command_klass.command == command_name
  end
end

#command_listing ⇒ Object 



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# File 'lib/testjour/cli.rb', line 74

def command_listing
  self.class.commands.sort_by { |c| c.command }.map do |command_klass|
    "  " + command_klass.command
  end
end

#command_name ⇒ Object 



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# File 'lib/testjour/cli.rb', line 53

def command_name
  ARGV.first
end

#execute ⇒ Object 



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# File 'lib/testjour/cli.rb', line 35

def execute
  raise NoCommandGiven if ARGV.empty?
  raise UnknownCommand.new(command_name) unless command_klass
  
  args = ARGV.dup
  args.shift # Remove subcommand name
  
  command_klass.new(self, args).run
rescue NoCommandGiven, UnknownCommand
  exit_with_usage
end

#exit_with_usage ⇒ Object 



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# File 'lib/testjour/cli.rb', line 57

def exit_with_usage
  $stderr.puts "ERROR: #{$!.message}"
  $stderr.puts usage
  exit 1
end

#usage ⇒ Object 



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

def usage
  message = []
  message << "usage: testjour <SUBCOMMAND> [OPTIONS] [ARGS...]"
  message << "Type 'testjour help <SUBCOMMAND>' for help on a specific subcommand."
  message << "Type 'testjour version' to get this program's version."
  message << ""
  message << "Available subcommands are:"
  message += command_listing
  message.map { |line| line.chomp }.join("\n")
end