зеркало из https://github.com/github/ruby.git
791 строка
23 KiB
Ruby
791 строка
23 KiB
Ruby
require 'shellwords'
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require 'optparse'
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require 'rake/task_manager'
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require 'rake/file_list'
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require 'rake/thread_pool'
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require 'rake/thread_history_display'
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require 'rake/trace_output'
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require 'rake/win32'
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module Rake
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CommandLineOptionError = Class.new(StandardError)
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##
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# Rake main application object. When invoking +rake+ from the
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# command line, a Rake::Application object is created and run.
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class Application
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include TaskManager
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include TraceOutput
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# The name of the application (typically 'rake')
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attr_reader :name
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# The original directory where rake was invoked.
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attr_reader :original_dir
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# Name of the actual rakefile used.
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attr_reader :rakefile
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# Number of columns on the terminal
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attr_accessor :terminal_columns
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# List of the top level task names (task names from the command line).
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attr_reader :top_level_tasks
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DEFAULT_RAKEFILES = [
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'rakefile',
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'Rakefile',
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'rakefile.rb',
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'Rakefile.rb'
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].freeze
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# Initialize a Rake::Application object.
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def initialize
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super
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@name = 'rake'
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@rakefiles = DEFAULT_RAKEFILES.dup
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@rakefile = nil
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@pending_imports = []
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@imported = []
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@loaders = {}
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@default_loader = Rake::DefaultLoader.new
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@original_dir = Dir.pwd
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@top_level_tasks = []
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add_loader('rb', DefaultLoader.new)
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add_loader('rf', DefaultLoader.new)
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add_loader('rake', DefaultLoader.new)
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@tty_output = STDOUT.tty?
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@terminal_columns = ENV['RAKE_COLUMNS'].to_i
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end
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# Run the Rake application. The run method performs the following
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# three steps:
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#
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# * Initialize the command line options (+init+).
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# * Define the tasks (+load_rakefile+).
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# * Run the top level tasks (+top_level+).
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#
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# If you wish to build a custom rake command, you should call
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# +init+ on your application. Then define any tasks. Finally,
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# call +top_level+ to run your top level tasks.
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def run
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standard_exception_handling do
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init
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load_rakefile
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top_level
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end
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end
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# Initialize the command line parameters and app name.
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def init(app_name='rake')
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standard_exception_handling do
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@name = app_name
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args = handle_options
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collect_command_line_tasks(args)
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end
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end
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# Find the rakefile and then load it and any pending imports.
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def load_rakefile
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standard_exception_handling do
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raw_load_rakefile
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end
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end
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# Run the top level tasks of a Rake application.
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def top_level
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run_with_threads do
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if options.show_tasks
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display_tasks_and_comments
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elsif options.show_prereqs
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display_prerequisites
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else
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top_level_tasks.each { |task_name| invoke_task(task_name) }
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end
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end
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end
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# Run the given block with the thread startup and shutdown.
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def run_with_threads
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thread_pool.gather_history if options.job_stats == :history
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yield
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thread_pool.join
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if options.job_stats
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stats = thread_pool.statistics
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puts "Maximum active threads: #{stats[:max_active_threads]} + main"
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puts "Total threads in play: #{stats[:total_threads_in_play]} + main"
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end
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ThreadHistoryDisplay.new(thread_pool.history).show if
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options.job_stats == :history
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end
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# Add a loader to handle imported files ending in the extension
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# +ext+.
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def add_loader(ext, loader)
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ext = ".#{ext}" unless ext =~ /^\./
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@loaders[ext] = loader
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end
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# Application options from the command line
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def options
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@options ||= OpenStruct.new
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end
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# Return the thread pool used for multithreaded processing.
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def thread_pool # :nodoc:
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@thread_pool ||= ThreadPool.new(options.thread_pool_size || Rake.suggested_thread_count-1)
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end
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# internal ----------------------------------------------------------------
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# Invokes a task with arguments that are extracted from +task_string+
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def invoke_task(task_string) # :nodoc:
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name, args = parse_task_string(task_string)
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t = self[name]
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t.invoke(*args)
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end
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def parse_task_string(string) # :nodoc:
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/^([^\[]+)(?:\[(.*)\])$/ =~ string.to_s
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name = $1
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remaining_args = $2
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return string, [] unless name
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return name, [] if remaining_args.empty?
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args = []
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begin
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/((?:[^\\,]|\\.)*?)\s*(?:,\s*(.*))?$/ =~ remaining_args
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remaining_args = $2
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args << $1.gsub(/\\(.)/, '\1')
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end while remaining_args
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return name, args
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end
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# Provide standard exception handling for the given block.
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def standard_exception_handling # :nodoc:
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yield
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rescue SystemExit
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# Exit silently with current status
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raise
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rescue OptionParser::InvalidOption => ex
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$stderr.puts ex.message
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exit(false)
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rescue Exception => ex
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# Exit with error message
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display_error_message(ex)
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exit_because_of_exception(ex)
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end
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# Exit the program because of an unhandle exception.
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# (may be overridden by subclasses)
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def exit_because_of_exception(ex) # :nodoc:
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exit(false)
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end
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# Display the error message that caused the exception.
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def display_error_message(ex) # :nodoc:
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trace "#{name} aborted!"
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display_exception_details(ex)
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trace "Tasks: #{ex.chain}" if has_chain?(ex)
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trace "(See full trace by running task with --trace)" unless
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options.backtrace
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end
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def display_exception_details(ex) # :nodoc:
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seen = Thread.current[:rake_display_exception_details_seen] ||= []
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return if seen.include? ex
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seen << ex
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display_exception_message_details(ex)
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display_exception_backtrace(ex)
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display_exception_details(ex.cause) if has_cause?(ex)
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end
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def has_cause?(ex) # :nodoc:
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ex.respond_to?(:cause) && ex.cause
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end
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def display_exception_message_details(ex) # :nodoc:
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if ex.instance_of?(RuntimeError)
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trace ex.message
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else
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trace "#{ex.class.name}: #{ex.message}"
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end
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end
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def display_exception_backtrace(ex) # :nodoc:
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if options.backtrace
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trace ex.backtrace.join("\n")
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else
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trace Backtrace.collapse(ex.backtrace).join("\n")
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end
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end
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# Warn about deprecated usage.
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#
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# Example:
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# Rake.application.deprecate("import", "Rake.import", caller.first)
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#
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def deprecate(old_usage, new_usage, call_site) # :nodoc:
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unless options.ignore_deprecate
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$stderr.puts "WARNING: '#{old_usage}' is deprecated. " +
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"Please use '#{new_usage}' instead.\n" +
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" at #{call_site}"
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end
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end
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# Does the exception have a task invocation chain?
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def has_chain?(exception) # :nodoc:
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exception.respond_to?(:chain) && exception.chain
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end
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private :has_chain?
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# True if one of the files in RAKEFILES is in the current directory.
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# If a match is found, it is copied into @rakefile.
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def have_rakefile # :nodoc:
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@rakefiles.each do |fn|
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if File.exist?(fn)
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others = FileList.glob(fn, File::FNM_CASEFOLD)
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return others.size == 1 ? others.first : fn
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elsif fn == ''
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return fn
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end
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end
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return nil
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end
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# True if we are outputting to TTY, false otherwise
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def tty_output? # :nodoc:
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@tty_output
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end
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# Override the detected TTY output state (mostly for testing)
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def tty_output=(tty_output_state) # :nodoc:
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@tty_output = tty_output_state
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end
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# We will truncate output if we are outputting to a TTY or if we've been
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# given an explicit column width to honor
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def truncate_output? # :nodoc:
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tty_output? || @terminal_columns.nonzero?
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end
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# Display the tasks and comments.
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def display_tasks_and_comments # :nodoc:
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displayable_tasks = tasks.select { |t|
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(options.show_all_tasks || t.comment) &&
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t.name =~ options.show_task_pattern
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}
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case options.show_tasks
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when :tasks
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width = displayable_tasks.map { |t| t.name_with_args.length }.max || 10
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if truncate_output?
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max_column = terminal_width - name.size - width - 7
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else
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max_column = nil
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end
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displayable_tasks.each do |t|
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printf("#{name} %-#{width}s # %s\n",
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t.name_with_args,
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max_column ? truncate(t.comment, max_column) : t.comment)
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end
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when :describe
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displayable_tasks.each do |t|
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puts "#{name} #{t.name_with_args}"
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comment = t.full_comment || ""
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comment.split("\n").each do |line|
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puts " #{line}"
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end
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puts
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end
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when :lines
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displayable_tasks.each do |t|
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t.locations.each do |loc|
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printf "#{name} %-30s %s\n", t.name_with_args, loc
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end
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end
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else
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fail "Unknown show task mode: '#{options.show_tasks}'"
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end
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end
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def terminal_width # :nodoc:
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if @terminal_columns.nonzero?
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result = @terminal_columns
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else
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result = unix? ? dynamic_width : 80
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end
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(result < 10) ? 80 : result
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rescue
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80
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end
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# Calculate the dynamic width of the
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def dynamic_width # :nodoc:
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@dynamic_width ||= (dynamic_width_stty.nonzero? || dynamic_width_tput)
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end
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def dynamic_width_stty # :nodoc:
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%x{stty size 2>/dev/null}.split[1].to_i
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end
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def dynamic_width_tput # :nodoc:
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%x{tput cols 2>/dev/null}.to_i
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end
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def unix? # :nodoc:
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RbConfig::CONFIG['host_os'] =~
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/(aix|darwin|linux|(net|free|open)bsd|cygwin|solaris|irix|hpux)/i
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end
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def windows? # :nodoc:
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Win32.windows?
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end
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def truncate(string, width) # :nodoc:
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if string.nil?
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""
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elsif string.length <= width
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string
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else
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(string[0, width - 3] || "") + "..."
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end
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end
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# Display the tasks and prerequisites
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def display_prerequisites # :nodoc:
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tasks.each do |t|
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puts "#{name} #{t.name}"
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t.prerequisites.each { |pre| puts " #{pre}" }
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end
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end
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def trace(*strings) # :nodoc:
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options.trace_output ||= $stderr
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trace_on(options.trace_output, *strings)
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end
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def sort_options(options) # :nodoc:
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options.sort_by { |opt|
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opt.select { |o| o =~ /^-/ }.map { |o| o.downcase }.sort.reverse
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}
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end
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private :sort_options
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# A list of all the standard options used in rake, suitable for
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# passing to OptionParser.
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def standard_rake_options # :nodoc:
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sort_options(
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[
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['--all', '-A',
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"Show all tasks, even uncommented ones (in combination with -T or -D)",
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lambda { |value|
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options.show_all_tasks = value
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}
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],
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['--backtrace=[OUT]',
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"Enable full backtrace. OUT can be stderr (default) or stdout.",
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lambda { |value|
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options.backtrace = true
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select_trace_output(options, 'backtrace', value)
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}
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],
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['--build-all', '-B',
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"Build all prerequisites, including those which are up-to-date.",
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lambda { |value|
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options.build_all = true
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}
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],
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['--comments',
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"Show commented tasks only",
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lambda { |value|
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options.show_all_tasks = !value
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}
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],
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['--describe', '-D [PATTERN]',
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"Describe the tasks (matching optional PATTERN), then exit.",
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lambda { |value|
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select_tasks_to_show(options, :describe, value)
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}
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],
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['--dry-run', '-n',
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"Do a dry run without executing actions.",
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lambda { |value|
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Rake.verbose(true)
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Rake.nowrite(true)
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options.dryrun = true
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options.trace = true
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}
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],
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['--execute', '-e CODE',
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"Execute some Ruby code and exit.",
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lambda { |value|
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eval(value)
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exit
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}
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],
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['--execute-print', '-p CODE',
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"Execute some Ruby code, print the result, then exit.",
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lambda { |value|
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puts eval(value)
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exit
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}
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],
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['--execute-continue', '-E CODE',
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"Execute some Ruby code, " +
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"then continue with normal task processing.",
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lambda { |value| eval(value) }
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],
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['--jobs', '-j [NUMBER]',
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"Specifies the maximum number of tasks to execute in parallel. " +
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"(default is number of CPU cores + 4)",
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lambda { |value|
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if value.nil? || value == ''
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value = FIXNUM_MAX
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elsif value =~ /^\d+$/
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value = value.to_i
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else
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value = Rake.suggested_thread_count
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end
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value = 1 if value < 1
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options.thread_pool_size = value - 1
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}
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],
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['--job-stats [LEVEL]',
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"Display job statistics. " +
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"LEVEL=history displays a complete job list",
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lambda { |value|
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if value =~ /^history/i
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options.job_stats = :history
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else
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options.job_stats = true
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end
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}
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],
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['--libdir', '-I LIBDIR',
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"Include LIBDIR in the search path for required modules.",
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lambda { |value| $:.push(value) }
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],
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['--multitask', '-m',
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"Treat all tasks as multitasks.",
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lambda { |value| options.always_multitask = true }
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],
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['--no-search', '--nosearch',
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'-N', "Do not search parent directories for the Rakefile.",
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lambda { |value| options.nosearch = true }
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],
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['--prereqs', '-P',
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"Display the tasks and dependencies, then exit.",
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lambda { |value| options.show_prereqs = true }
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],
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['--quiet', '-q',
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"Do not log messages to standard output.",
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lambda { |value| Rake.verbose(false) }
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],
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['--rakefile', '-f [FILENAME]',
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"Use FILENAME as the rakefile to search for.",
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lambda { |value|
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value ||= ''
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@rakefiles.clear
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@rakefiles << value
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}
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],
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['--rakelibdir', '--rakelib', '-R RAKELIBDIR',
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"Auto-import any .rake files in RAKELIBDIR. " +
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"(default is 'rakelib')",
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lambda { |value|
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options.rakelib = value.split(File::PATH_SEPARATOR)
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}
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],
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['--require', '-r MODULE',
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"Require MODULE before executing rakefile.",
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lambda { |value|
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begin
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require value
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rescue LoadError => ex
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begin
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rake_require value
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rescue LoadError
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raise ex
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end
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end
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}
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],
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['--rules',
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"Trace the rules resolution.",
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lambda { |value| options.trace_rules = true }
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],
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['--silent', '-s',
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"Like --quiet, but also suppresses the " +
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"'in directory' announcement.",
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lambda { |value|
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Rake.verbose(false)
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options.silent = true
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}
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],
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['--suppress-backtrace PATTERN',
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"Suppress backtrace lines matching regexp PATTERN. " +
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"Ignored if --trace is on.",
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lambda { |value|
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options.suppress_backtrace_pattern = Regexp.new(value)
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}
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],
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['--system', '-g',
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"Using system wide (global) rakefiles " +
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"(usually '~/.rake/*.rake').",
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lambda { |value| options.load_system = true }
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],
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['--no-system', '--nosystem', '-G',
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"Use standard project Rakefile search paths, " +
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"ignore system wide rakefiles.",
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lambda { |value| options.ignore_system = true }
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],
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['--tasks', '-T [PATTERN]',
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"Display the tasks (matching optional PATTERN) " +
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"with descriptions, then exit.",
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lambda { |value|
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select_tasks_to_show(options, :tasks, value)
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}
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],
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['--trace=[OUT]', '-t',
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"Turn on invoke/execute tracing, enable full backtrace. " +
|
|
"OUT can be stderr (default) or stdout.",
|
|
lambda { |value|
|
|
options.trace = true
|
|
options.backtrace = true
|
|
select_trace_output(options, 'trace', value)
|
|
Rake.verbose(true)
|
|
}
|
|
],
|
|
['--verbose', '-v',
|
|
"Log message to standard output.",
|
|
lambda { |value| Rake.verbose(true) }
|
|
],
|
|
['--version', '-V',
|
|
"Display the program version.",
|
|
lambda { |value|
|
|
puts "rake, version #{RAKEVERSION}"
|
|
exit
|
|
}
|
|
],
|
|
['--where', '-W [PATTERN]',
|
|
"Describe the tasks (matching optional PATTERN), then exit.",
|
|
lambda { |value|
|
|
select_tasks_to_show(options, :lines, value)
|
|
options.show_all_tasks = true
|
|
}
|
|
],
|
|
['--no-deprecation-warnings', '-X',
|
|
"Disable the deprecation warnings.",
|
|
lambda { |value|
|
|
options.ignore_deprecate = true
|
|
}
|
|
],
|
|
])
|
|
end
|
|
|
|
def select_tasks_to_show(options, show_tasks, value) # :nodoc:
|
|
options.show_tasks = show_tasks
|
|
options.show_task_pattern = Regexp.new(value || '')
|
|
Rake::TaskManager.record_task_metadata = true
|
|
end
|
|
private :select_tasks_to_show
|
|
|
|
def select_trace_output(options, trace_option, value) # :nodoc:
|
|
value = value.strip unless value.nil?
|
|
case value
|
|
when 'stdout'
|
|
options.trace_output = $stdout
|
|
when 'stderr', nil
|
|
options.trace_output = $stderr
|
|
else
|
|
fail CommandLineOptionError,
|
|
"Unrecognized --#{trace_option} option '#{value}'"
|
|
end
|
|
end
|
|
private :select_trace_output
|
|
|
|
# Read and handle the command line options. Returns the command line
|
|
# arguments that we didn't understand, which should (in theory) be just
|
|
# task names and env vars.
|
|
def handle_options # :nodoc:
|
|
options.rakelib = ['rakelib']
|
|
options.trace_output = $stderr
|
|
|
|
OptionParser.new do |opts|
|
|
opts.banner = "#{Rake.application.name} [-f rakefile] {options} targets..."
|
|
opts.separator ""
|
|
opts.separator "Options are ..."
|
|
|
|
opts.on_tail("-h", "--help", "-H", "Display this help message.") do
|
|
puts opts
|
|
exit
|
|
end
|
|
|
|
standard_rake_options.each { |args| opts.on(*args) }
|
|
opts.environment('RAKEOPT')
|
|
end.parse(ARGV)
|
|
end
|
|
|
|
# Similar to the regular Ruby +require+ command, but will check
|
|
# for *.rake files in addition to *.rb files.
|
|
def rake_require(file_name, paths=$LOAD_PATH, loaded=$") # :nodoc:
|
|
fn = file_name + ".rake"
|
|
return false if loaded.include?(fn)
|
|
paths.each do |path|
|
|
full_path = File.join(path, fn)
|
|
if File.exist?(full_path)
|
|
Rake.load_rakefile(full_path)
|
|
loaded << fn
|
|
return true
|
|
end
|
|
end
|
|
fail LoadError, "Can't find #{file_name}"
|
|
end
|
|
|
|
def find_rakefile_location # :nodoc:
|
|
here = Dir.pwd
|
|
until (fn = have_rakefile)
|
|
Dir.chdir("..")
|
|
return nil if Dir.pwd == here || options.nosearch
|
|
here = Dir.pwd
|
|
end
|
|
[fn, here]
|
|
ensure
|
|
Dir.chdir(Rake.original_dir)
|
|
end
|
|
|
|
def print_rakefile_directory(location) # :nodoc:
|
|
$stderr.puts "(in #{Dir.pwd})" unless
|
|
options.silent or original_dir == location
|
|
end
|
|
|
|
def raw_load_rakefile # :nodoc:
|
|
rakefile, location = find_rakefile_location
|
|
if (! options.ignore_system) &&
|
|
(options.load_system || rakefile.nil?) &&
|
|
system_dir && File.directory?(system_dir)
|
|
print_rakefile_directory(location)
|
|
glob("#{system_dir}/*.rake") do |name|
|
|
add_import name
|
|
end
|
|
else
|
|
fail "No Rakefile found (looking for: #{@rakefiles.join(', ')})" if
|
|
rakefile.nil?
|
|
@rakefile = rakefile
|
|
Dir.chdir(location)
|
|
print_rakefile_directory(location)
|
|
Rake.load_rakefile(File.expand_path(@rakefile)) if
|
|
@rakefile && @rakefile != ''
|
|
options.rakelib.each do |rlib|
|
|
glob("#{rlib}/*.rake") do |name|
|
|
add_import name
|
|
end
|
|
end
|
|
end
|
|
load_imports
|
|
end
|
|
|
|
def glob(path, &block) # :nodoc:
|
|
FileList.glob(path.gsub("\\", '/')).each(&block)
|
|
end
|
|
private :glob
|
|
|
|
# The directory path containing the system wide rakefiles.
|
|
def system_dir # :nodoc:
|
|
@system_dir ||=
|
|
begin
|
|
if ENV['RAKE_SYSTEM']
|
|
ENV['RAKE_SYSTEM']
|
|
else
|
|
standard_system_dir
|
|
end
|
|
end
|
|
end
|
|
|
|
# The standard directory containing system wide rake files.
|
|
if Win32.windows?
|
|
def standard_system_dir #:nodoc:
|
|
Win32.win32_system_dir
|
|
end
|
|
else
|
|
def standard_system_dir #:nodoc:
|
|
File.join(File.expand_path('~'), '.rake')
|
|
end
|
|
end
|
|
private :standard_system_dir
|
|
|
|
# Collect the list of tasks on the command line. If no tasks are
|
|
# given, return a list containing only the default task.
|
|
# Environmental assignments are processed at this time as well.
|
|
#
|
|
# `args` is the list of arguments to peruse to get the list of tasks.
|
|
# It should be the command line that was given to rake, less any
|
|
# recognised command-line options, which OptionParser.parse will
|
|
# have taken care of already.
|
|
def collect_command_line_tasks(args) # :nodoc:
|
|
@top_level_tasks = []
|
|
args.each do |arg|
|
|
if arg =~ /^(\w+)=(.*)$/m
|
|
ENV[$1] = $2
|
|
else
|
|
@top_level_tasks << arg unless arg =~ /^-/
|
|
end
|
|
end
|
|
@top_level_tasks.push(default_task_name) if @top_level_tasks.empty?
|
|
end
|
|
|
|
# Default task name ("default").
|
|
# (May be overridden by subclasses)
|
|
def default_task_name # :nodoc:
|
|
"default"
|
|
end
|
|
|
|
# Add a file to the list of files to be imported.
|
|
def add_import(fn) # :nodoc:
|
|
@pending_imports << fn
|
|
end
|
|
|
|
# Load the pending list of imported files.
|
|
def load_imports # :nodoc:
|
|
while fn = @pending_imports.shift
|
|
next if @imported.member?(fn)
|
|
fn_task = lookup(fn) and fn_task.invoke
|
|
ext = File.extname(fn)
|
|
loader = @loaders[ext] || @default_loader
|
|
loader.load(fn)
|
|
if fn_task = lookup(fn) and fn_task.needed?
|
|
fn_task.reenable
|
|
fn_task.invoke
|
|
loader.load(fn)
|
|
end
|
|
@imported << fn
|
|
end
|
|
end
|
|
|
|
def rakefile_location(backtrace=caller) # :nodoc:
|
|
backtrace.map { |t| t[/([^:]+):/, 1] }
|
|
|
|
re = /^#{@rakefile}$/
|
|
re = /#{re.source}/i if windows?
|
|
|
|
backtrace.find { |str| str =~ re } || ''
|
|
end
|
|
|
|
private
|
|
FIXNUM_MAX = (2**(0.size * 8 - 2) - 1) # :nodoc:
|
|
|
|
end
|
|
end
|