Class: TemplateBuilder::App::Main

Inherits:
Object
  • Object
show all
Defined in:
lib/template_builder/app.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(opts = {}) ⇒ Main

Create a new Main application instance. Options can be passed to configuret he stdout and stderr IO streams (very useful for testing).



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# File 'lib/template_builder/app.rb', line 26

def initialize( opts = {} )
  opts[:stdout] ||= $stdout
  opts[:stderr] ||= $stderr

  @opts = opts
  @stdout = opts[:stdout]
  @stderr = opts[:stderr]
end

Instance Attribute Details

#stderr ⇒ Object (readonly)

Returns the value of attribute stderr.



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# File 'lib/template_builder/app.rb', line 21

def stderr
  @stderr
end

#stdout ⇒ Object (readonly)

Returns the value of attribute stdout.



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# File 'lib/template_builder/app.rb', line 20

def stdout
  @stdout
end

Instance Method Details

#help ⇒ Object

Show the toplevel Template builder help message.



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# File 'lib/template_builder/app.rb', line 76

def help
  msg = "NAME\n  Template_builder v\#{::TemplateBuilder.version}\n\nDESCRIPTION\n  Template-builder is a handy tool that builds a template for your new Ruby\n  on Rails projects. The template contains all you need to build the RoR \n  project that you want.\n\n  Usage:\ntemplate_builder -h/--help\ntemplate_builder -v/--version\ntemplate_builder [command] [parameter type parameter type] [options]\n\n  Examples:\ntemplate_builder new <new_template_file>\ntemplate_builder edit<old_template_file>\n\n  Commands:\n  MSG\n fmt = lambda { |cmd|\n         if @all_commands[cmd] < ::TemplateBuilder::App::Command\n           msg << \"    template_builder %-15s %s\\n\" % [cmd, @all_commands[cmd].summary]\n           puts msg\n         end\n       }\n ary = [:new, :show, :add]\n ary.each(&fmt)\n (@all_commands.keys - ary).each(&fmt)\n  msg.concat <<-MSG\n\n  Further Help:\nEach command has a '--help' option that will provide detailed\ninformation for that command.\n\nhttp://github.com/alaibe/template_builder\n\n  MSG\n\nstdout.puts msg\nend\n"

#run(args) ⇒ Object

Parse the desired user command and run that command object.



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# File 'lib/template_builder/app.rb', line 37

def run( args )
  commands = []
  @all_commands = ::TemplateBuilder::App.plugins
  @all_commands.each { |k,v| commands << k.to_s if v < ::TemplateBuilder::App::Command }
  cmd_str = args.shift
  cmd = case cmd_str
    when *commands
      key = cmd_str.to_sym
      @all_commands[key].new @opts       
    when nil, '-h', '--help'
      help
    when '-v', '--version'
      stdout.puts "TemplateBuilder v#{::TemplateBuilder.version}"
    else
      help
      raise Error, "Unknown command #{cmd_str.inspect}"
    end

  if cmd
    cmd.parse args
    cmd.run
  end

rescue TemplateBuilder::App::Error => err
  stderr.puts "ERROR:  While executing template builder ..."
  stderr.puts "    #{err.message}"
  exit 1
rescue StandardError => err
  stderr.puts "ERROR:  While executing template builder ... (#{err.class})"
  stderr.puts "    #{err.to_s}"
  exit 1
rescue Exception => err
  stderr.puts "ERROR:  While executing template builder ... (#{err.class})"
  stderr.puts "    #{err.to_s}"
  exit 1
end