Class: Mongrel::Command::Registry

Inherits:
Object
  • Object
show all
Includes:
Singleton
Defined in:
lib/mongrel/command.rb

Overview

A Singleton class that manages all of the available commands and handles running them.

Instance Method Summary collapse

Instance Method Details

#commands ⇒ Object

Builds a list of possible commands from the Command derivates list



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# File 'lib/mongrel/command.rb', line 129

def commands
  list = Command.derivatives()
  match = Regexp.new("(.*::.*)|(.*command.*)", Regexp::IGNORECASE)
  
  results = []
  list.keys.each do |key|
    results << key.to_s unless match.match(key.to_s)
  end
  
  return results.sort
end

#print_command_list ⇒ Object

Prints a list of available commands.



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# File 'lib/mongrel/command.rb', line 142

def print_command_list
  puts "Available commands are:\n\n"
  
  self.commands.each do |name|
    puts " - #{name}\n"
  end
  
  puts "\nEach command takes -h as an option to get help."
  
end

#run(args) ⇒ Object

Runs the args against the first argument as the command name. If it has any errors it returns a false, otherwise it return true.



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# File 'lib/mongrel/command.rb', line 156

def run(args)
  # find the command and change the program's name to reflect it
  cmd_name = args.shift
  $0 = "#{cmd_name}"
  
  if cmd_name == "?" or cmd_name == "help"
    print_command_list
    return true
  end
  
  # command exists, set it up and validate it
  begin
    command = Command.create(cmd_name, args)
  rescue FactoryError
    STDERR.puts "INVALID COMMAND: #$!"
    print_command_list
    return
  end
  
  # Normally the command is NOT valid right after being created
  # but sometimes (like with -h or -v) there's no further processing
  # needed so the command is already valid so we can skip it.
  if not command.done_validating
    if not command.validate
      STDERR.puts "#{cmd_name} reported an error. Use -h to get help."
      return false
    else
      command.run
    end
  end
  return true
end