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Contents
module Albacore
module CliDSL
def self.included klass
klass.extend ClassMethods
klass.send :include, InstanceMethods
end
class CommandError < StandardError
end
module InstanceMethods
# Calls an instance method defined via the ::command class method.
# Raises CommandError if the command does not exist.
def run_command(command)
method_name = "#{self.class.command_prefix}#{command}"
if self.class.method_defined?(method_name)
send method_name
else
raise CommandError, "invalid command #{command}"
end
end
end
module ClassMethods
# Defines an instance method based on the first command name.
# The method executes the code of the given block.
# Aliases methods for any subsequent command names.
def command(*command_names, &block)
method_name = "#{command_prefix}#{command_names.shift}"
define_method method_name, &block
command_names.each do |c|
alias_method "#{command_prefix}#{c}", method_name
end
end
# The prefix for any instance method defined by the ::command method.
def command_prefix
:_run_
end
end
end
end
Version data entries
68 entries across 68 versions & 1 rubygems