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require 'rbconfig'
class Thor
module Base
# Returns the shell used in all Thor classes. If you are in a Unix platform
# it will use a colored log, otherwise it will use a basic one without color.
#
def self.shell
@shell ||= if ENV['THOR_SHELL'] && ENV['THOR_SHELL'].size > 0
Thor::Shell.const_get(ENV['THOR_SHELL'])
elsif ((RbConfig::CONFIG['host_os'] =~ /mswin|mingw/) && !(ENV['ANSICON']))
Thor::Shell::Basic
else
Thor::Shell::Color
end
end
# Sets the shell used in all Thor classes.
#
def self.shell=(klass)
@shell = klass
end
end
module Shell
SHELL_DELEGATED_METHODS = [:ask, :error, :set_color, :yes?, :no?, :say, :say_status, :print_in_columns, :print_table, :print_wrapped, :file_collision, :terminal_width]
autoload :Basic, 'thor/shell/basic'
autoload :Color, 'thor/shell/color'
autoload :HTML, 'thor/shell/html'
# Add shell to initialize config values.
#
# ==== Configuration
# shell<Object>:: An instance of the shell to be used.
#
# ==== Examples
#
# class MyScript < Thor
# argument :first, :type => :numeric
# end
#
# MyScript.new [1.0], { :foo => :bar }, :shell => Thor::Shell::Basic.new
#
def initialize(args=[], options={}, config={})
super
self.shell = config[:shell]
self.shell.base ||= self if self.shell.respond_to?(:base)
end
# Holds the shell for the given Thor instance. If no shell is given,
# it gets a default shell from Thor::Base.shell.
def shell
@shell ||= Thor::Base.shell.new
end
# Sets the shell for this thor class.
def shell=(shell)
@shell = shell
end
# Common methods that are delegated to the shell.
SHELL_DELEGATED_METHODS.each do |method|
module_eval <<-METHOD, __FILE__, __LINE__
def #{method}(*args,&block)
shell.#{method}(*args,&block)
end
METHOD
end
# Yields the given block with padding.
def with_padding
shell.padding += 1
yield
ensure
shell.padding -= 1
end
protected
# Allow shell to be shared between invocations.
#
def _shared_configuration #:nodoc:
super.merge!(:shell => self.shell)
end
end
end
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