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



115
116
117
118
119
 
# File 'lib/mongrel/command.rb', line 115

def commands
  pmgr = PluginManager.instance
  list = pmgr.available["/commands"]
  return list.sort
end

#print_command_list ⇒ Object

Prints a list of available commands.



122
123
124
125
126
127
128
129
130
131
 
# File 'lib/mongrel/command.rb', line 122

def print_command_list
  puts "Available commands are:\n\n"
  
  self.commands.each do |name|
    puts " - #{name[1 .. -1]}\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.



136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
 
# File 'lib/mongrel/command.rb', line 136

def run(args)
  # find the command
  cmd_name = args.shift
  
  if !cmd_name or cmd_name == "?" or cmd_name == "help"
    print_command_list
    return true
  end
  
  # command exists, set it up and validate it
  begin
    command = PluginManager.instance.create("/commands/#{cmd_name}", :argv => args)
  rescue
    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