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# Rake DSL functions.
require 'rake/file_utils_ext'
module Rake
##
# DSL is a module that provides #task, #desc, #namespace, etc. Use this
# when you'd like to use rake outside the top level scope.
module DSL
#--
# Include the FileUtils file manipulation functions in the top
# level module, but mark them private so that they don't
# unintentionally define methods on other objects.
#++
include FileUtilsExt
private(*FileUtils.instance_methods(false))
private(*FileUtilsExt.instance_methods(false))
private
# Declare a basic task.
#
# Example:
# task :clobber => [:clean] do
# rm_rf "html"
# end
#
def task(*args, &block)
Rake::Task.define_task(*args, &block)
end
# Declare a file task.
#
# Example:
# file "config.cfg" => ["config.template"] do
# open("config.cfg", "w") do |outfile|
# open("config.template") do |infile|
# while line = infile.gets
# outfile.puts line
# end
# end
# end
# end
#
def file(*args, &block)
Rake::FileTask.define_task(*args, &block)
end
# Declare a file creation task.
# (Mainly used for the directory command).
def file_create(*args, &block)
Rake::FileCreationTask.define_task(*args, &block)
end
# Declare a set of files tasks to create the given directories on
# demand.
#
# Example:
# directory "testdata/doc"
#
def directory(*args, &block)
result = file_create(*args, &block)
dir, _ = *Rake.application.resolve_args(args)
Rake.each_dir_parent(dir) do |d|
file_create d do |t|
mkdir_p t.name unless File.exist?(t.name)
end
end
result
end
# Declare a task that performs its prerequisites in
# parallel. Multitasks does *not* guarantee that its prerequisites
# will execute in any given order (which is obvious when you think
# about it)
#
# Example:
# multitask :deploy => [:deploy_gem, :deploy_rdoc]
#
def multitask(*args, &block)
Rake::MultiTask.define_task(*args, &block)
end
# Create a new rake namespace and use it for evaluating the given
# block. Returns a NameSpace object that can be used to lookup
# tasks defined in the namespace.
#
# E.g.
#
# ns = namespace "nested" do
# task :run
# end
# task_run = ns[:run] # find :run in the given namespace.
#
def namespace(name=nil, &block)
name = name.to_s if name.kind_of?(Symbol)
name = name.to_str if name.respond_to?(:to_str)
unless name.kind_of?(String) || name.nil?
raise ArgumentError, "Expected a String or Symbol for a namespace name"
end
Rake.application.in_namespace(name, &block)
end
# Declare a rule for auto-tasks.
#
# Example:
# rule '.o' => '.c' do |t|
# sh %{cc -o #{t.name} #{t.source}}
# end
#
def rule(*args, &block)
Rake::Task.create_rule(*args, &block)
end
# Describe the next rake task.
# Duplicate descriptions are discarded.
#
# Example:
# desc "Run the Unit Tests"
# task :test => [:build]
# runtests
# end
#
def desc(description)
Rake.application.last_description = description
end
# Import the partial Rakefiles +fn+. Imported files are loaded
# _after_ the current file is completely loaded. This allows the
# import statement to appear anywhere in the importing file, and yet
# allowing the imported files to depend on objects defined in the
# importing file.
#
# A common use of the import statement is to include files
# containing dependency declarations.
#
# See also the --rakelibdir command line option.
#
# Example:
# import ".depend", "my_rules"
#
def import(*fns)
fns.each do |fn|
Rake.application.add_import(fn)
end
end
end
extend FileUtilsExt
end
# Extend the main object with the DSL commands. This allows top-level
# calls to task, etc. to work from a Rakefile without polluting the
# object inheritance tree.
self.extend Rake::DSL
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