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Edit File : application.rb \| Size : 17.45 KB
require 'shellwords' require 'optparse' require 'rake/task_manager' require 'rake/win32' module Rake ###################################################################### # Rake main application object. When invoking +rake+ from the # command line, a Rake::Application object is created and run. # class Application include TaskManager # The name of the application (typically 'rake') attr_reader :name # The original directory where rake was invoked. attr_reader :original_dir # Name of the actual rakefile used. attr_reader :rakefile # Number of columns on the terminal attr_accessor :terminal_columns # List of the top level task names (task names from the command line). attr_reader :top_level_tasks DEFAULT_RAKEFILES = ['rakefile', 'Rakefile', 'rakefile.rb', 'Rakefile.rb'].freeze # Initialize a Rake::Application object. def initialize super @name = 'rake' @rakefiles = DEFAULT_RAKEFILES.dup @rakefile = nil @pending_imports = [] @imported = [] @loaders = {} @default_loader = Rake::DefaultLoader.new @original_dir = Dir.pwd @top_level_tasks = [] add_loader('rb', DefaultLoader.new) add_loader('rf', DefaultLoader.new) add_loader('rake', DefaultLoader.new) @tty_output = STDOUT.tty? @terminal_columns = ENV['RAKE_COLUMNS'].to_i end # Run the Rake application. The run method performs the following # three steps: # # * Initialize the command line options (+init+). # * Define the tasks (+load_rakefile+). # * Run the top level tasks (+run_tasks+). # # If you wish to build a custom rake command, you should call # +init+ on your application. Then define any tasks. Finally, # call +top_level+ to run your top level tasks. def run standard_exception_handling do init load_rakefile top_level end end # Initialize the command line parameters and app name. def init(app_name='rake') standard_exception_handling do @name = app_name handle_options collect_tasks end end # Find the rakefile and then load it and any pending imports. def load_rakefile standard_exception_handling do raw_load_rakefile end end # Run the top level tasks of a Rake application. def top_level standard_exception_handling do if options.show_tasks display_tasks_and_comments elsif options.show_prereqs display_prerequisites else top_level_tasks.each { \|task_name\| invoke_task(task_name) } end end end # Add a loader to handle imported files ending in the extension # +ext+. def add_loader(ext, loader) ext = ".#{ext}" unless ext =~ /^\./ @loaders[ext] = loader end # Application options from the command line def options @options \|\|= OpenStruct.new end # private ---------------------------------------------------------------- def invoke_task(task_string) name, args = parse_task_string(task_string) t = self[name] t.invoke(args) end def parse_task_string(string) if string =~ /^([^\[]+)(\[(.)\])$/ name = $1 args = $3.split(/\s,\s/) else name = string args = [] end [name, args] end # Provide standard exception handling for the given block. def standard_exception_handling begin yield rescue SystemExit => ex # Exit silently with current status raise rescue OptionParser::InvalidOption => ex $stderr.puts ex.message exit(false) rescue Exception => ex # Exit with error message display_error_message(ex) exit(false) end end # Display the error message that caused the exception. def display_error_message(ex) $stderr.puts "#{name} aborted!" $stderr.puts ex.message if options.trace $stderr.puts ex.backtrace.join("\n") else $stderr.puts rakefile_location(ex.backtrace) end $stderr.puts "Tasks: #{ex.chain}" if has_chain?(ex) $stderr.puts "(See full trace by running task with --trace)" unless options.trace end # Warn about deprecated usage. # # Example: # Rake.application.deprecate("import", "Rake.import", caller.first) # def deprecate(old_usage, new_usage, call_site) return if options.ignore_deprecate $stderr.puts "WARNING: '#{old_usage}' is deprecated. " + "Please use '#{new_usage}' instead.\n" + " at #{call_site}" end # Does the exception have a task invocation chain? def has_chain?(exception) exception.respond_to?(:chain) && exception.chain end private :has_chain? # True if one of the files in RAKEFILES is in the current directory. # If a match is found, it is copied into @rakefile. def have_rakefile @rakefiles.each do \|fn\| if File.exist?(fn) others = Dir.glob(fn, File::FNM_CASEFOLD) return others.size == 1 ? others.first : fn elsif fn == '' return fn end end return nil end # True if we are outputting to TTY, false otherwise def tty_output? @tty_output end # Override the detected TTY output state (mostly for testing) def tty_output=( tty_output_state ) @tty_output = tty_output_state end # We will truncate output if we are outputting to a TTY or if we've been # given an explicit column width to honor def truncate_output? tty_output? \|\| @terminal_columns.nonzero? end # Display the tasks and comments. def display_tasks_and_comments displayable_tasks = tasks.select { \|t\| t.comment && t.name =~ options.show_task_pattern } case options.show_tasks when :tasks width = displayable_tasks.collect { \|t\| t.name_with_args.length }.max \|\| 10 max_column = truncate_output? ? terminal_width - name.size - width - 7 : nil displayable_tasks.each do \|t\| printf "#{name} %-#{width}s # %s\n", t.name_with_args, max_column ? truncate(t.comment, max_column) : t.comment end when :describe displayable_tasks.each do \|t\| puts "#{name} #{t.name_with_args}" t.full_comment.split("\n").each do \|line\| puts " #{line}" end puts end when :lines displayable_tasks.each do \|t\| t.locations.each do \|loc\| printf "#{name} %-30s %s\n",t.name_with_args, loc end end else fail "Unknown show task mode: '#{options.show_tasks}'" end end def terminal_width if @terminal_columns.nonzero? result = @terminal_columns else result = unix? ? dynamic_width : 80 end (result < 10) ? 80 : result rescue 80 end # Calculate the dynamic width of the def dynamic_width @dynamic_width \|\|= (dynamic_width_stty.nonzero? \|\| dynamic_width_tput) end def dynamic_width_stty %x{stty size 2>/dev/null}.split[1].to_i end def dynamic_width_tput %x{tput cols 2>/dev/null}.to_i end def unix? RbConfig::CONFIG['host_os'] =~ /(aix\|darwin\|linux\|(net\|free\|open)bsd\|cygwin\|solaris\|irix\|hpux)/i end def windows? Win32.windows? end def truncate(string, width) if string.length <= width string else ( string[0, width-3] \|\| "" ) + "..." end end # Display the tasks and prerequisites def display_prerequisites tasks.each do \|t\| puts "#{name} #{t.name}" t.prerequisites.each { \|pre\| puts " #{pre}" } end end # A list of all the standard options used in rake, suitable for # passing to OptionParser. def standard_rake_options [ ['--classic-namespace', '-C', "Put Task and FileTask in the top level namespace", lambda { \|value\| require 'rake/classic_namespace' options.classic_namespace = true } ], ['--describe', '-D [PATTERN]', "Describe the tasks (matching optional PATTERN), then exit.", lambda { \|value\| options.show_tasks = :describe options.show_task_pattern = Regexp.new(value \|\| '') TaskManager.record_task_metadata = true } ], ['--dry-run', '-n', "Do a dry run without executing actions.", lambda { \|value\| Rake.verbose(true) Rake.nowrite(true) options.dryrun = true options.trace = true } ], ['--execute', '-e CODE', "Execute some Ruby code and exit.", lambda { \|value\| eval(value) exit } ], ['--execute-print', '-p CODE', "Execute some Ruby code, print the result, then exit.", lambda { \|value\| puts eval(value) exit } ], ['--execute-continue', '-E CODE', "Execute some Ruby code, then continue with normal task processing.", lambda { \|value\| eval(value) } ], ['--libdir', '-I LIBDIR', "Include LIBDIR in the search path for required modules.", lambda { \|value\| $:.push(value) } ], ['--no-search', '--nosearch', '-N', "Do not search parent directories for the Rakefile.", lambda { \|value\| options.nosearch = true } ], ['--prereqs', '-P', "Display the tasks and dependencies, then exit.", lambda { \|value\| options.show_prereqs = true } ], ['--quiet', '-q', "Do not log messages to standard output.", lambda { \|value\| Rake.verbose(false) } ], ['--rakefile', '-f [FILE]', "Use FILE as the rakefile.", lambda { \|value\| value \|\|= '' @rakefiles.clear @rakefiles << value } ], ['--rakelibdir', '--rakelib', '-R RAKELIBDIR', "Auto-import any .rake files in RAKELIBDIR. (default is 'rakelib')", # HACK Use File::PATH_SEPARATOR lambda { \|value\| options.rakelib = value.split(':') } ], ['--require', '-r MODULE', "Require MODULE before executing rakefile.", lambda { \|value\| begin require value rescue LoadError => ex begin rake_require value rescue LoadError raise ex end end } ], ['--rules', "Trace the rules resolution.", lambda { \|value\| options.trace_rules = true } ], ['--silent', '-s', "Like --quiet, but also suppresses the 'in directory' announcement.", lambda { \|value\| Rake.verbose(false) options.silent = true } ], ['--system', '-g', "Using system wide (global) rakefiles (usually '~/.rake/.rake').", lambda { \|value\| options.load_system = true } ], ['--no-system', '--nosystem', '-G', "Use standard project Rakefile search paths, ignore system wide rakefiles.", lambda { \|value\| options.ignore_system = true } ], ['--tasks', '-T [PATTERN]', "Display the tasks (matching optional PATTERN) with descriptions, then exit.", lambda { \|value\| options.show_tasks = :tasks options.show_task_pattern = Regexp.new(value \|\| '') Rake::TaskManager.record_task_metadata = true } ], ['--trace', '-t', "Turn on invoke/execute tracing, enable full backtrace.", lambda { \|value\| options.trace = true 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\| options.show_tasks = :lines options.show_task_pattern = Regexp.new(value \|\| '') Rake::TaskManager.record_task_metadata = true } ], ['--no-deprecation-warnings', '-X', "Disable the deprecation warnings.", lambda { \|value\| options.ignore_deprecate = true } ], ] end # Read and handle the command line options. def handle_options options.rakelib = ['rakelib'] OptionParser.new do \|opts\| opts.banner = "rake [-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! # If class namespaces are requested, set the global options # according to the values in the options structure. if options.classic_namespace $show_tasks = options.show_tasks $show_prereqs = options.show_prereqs $trace = options.trace $dryrun = options.dryrun $silent = options.silent end end # Similar to the regular Ruby +require+ command, but will check # for .rake files in addition to .rb files. def rake_require(file_name, paths=$LOAD_PATH, loaded=$") 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 here = Dir.pwd while ! (fn = have_rakefile) Dir.chdir("..") if Dir.pwd == here \|\| options.nosearch return nil end here = Dir.pwd end [fn, here] ensure Dir.chdir(Rake.original_dir) end def print_rakefile_directory(location) $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) $rakefile = @rakefile if options.classic_namespace Rake.load_rakefile(File.expand_path(@rakefile)) if @rakefile && @rakefile != '' options.rakelib.each do \|rlib\| glob("#{rlib}/.rake") do \|name\| add_import name end end end load_imports end def glob(path, &block) Dir[path.gsub("\\", '/')].each(&block) end private :glob # The directory path containing the system wide rakefiles. def system_dir @system_dir \|\|= begin if ENV['RAKE_SYSTEM'] ENV['RAKE_SYSTEM'] else standard_system_dir end end end # The standard directory containing system wide rake files. if Win32.windows? def standard_system_dir #:nodoc: Win32.win32_system_dir end else def standard_system_dir #:nodoc: File.join(File.expand_path('~'), '.rake') end end private :standard_system_dir # Collect the list of tasks on the command line. If no tasks are # given, return a list containing only the default task. # Environmental assignments are processed at this time as well. def collect_tasks @top_level_tasks = [] ARGV.each do \|arg\| if arg =~ /^(\w+)=(.*)$/ ENV[$1] = $2 else @top_level_tasks << arg unless arg =~ /^-/ end end @top_level_tasks.push("default") if @top_level_tasks.size == 0 end # Add a file to the list of files to be imported. def add_import(fn) @pending_imports << fn end # Load the pending list of imported files. def load_imports while fn = @pending_imports.shift next if @imported.member?(fn) if fn_task = lookup(fn) fn_task.invoke end ext = File.extname(fn) loader = @loaders[ext] \|\| @default_loader loader.load(fn) @imported << fn end end # Warn about deprecated use of top level constant names. def const_warning(const_name) @const_warning \|\|= false if ! @const_warning $stderr.puts %{WARNING: Deprecated reference to top-level constant '#{const_name}' } + %{found at: #{rakefile_location}} # ' $stderr.puts %{ Use --classic-namespace on rake command} $stderr.puts %{ or 'require "rake/classic_namespace"' in Rakefile} end @const_warning = true end def rakefile_location backtrace = caller backtrace.map { \|t\| t[/([^:]+):/,1] } re = /^#{@rakefile}$/ re = /#{re.source}/i if windows? backtrace.find { \|str\| str =~ re } \|\| '' end end end Back

Edit File : application.rb | Size : 17.45 KB

require 'shellwords'
require 'optparse'

require 'rake/task_manager'
require 'rake/win32'

module Rake

######################################################################
  # Rake main application object.  When invoking +rake+ from the
  # command line, a Rake::Application object is created and run.
  #
  class Application
    include TaskManager

# The name of the application (typically 'rake')
    attr_reader :name

# The original directory where rake was invoked.
    attr_reader :original_dir

# Name of the actual rakefile used.
    attr_reader :rakefile

# Number of columns on the terminal
    attr_accessor :terminal_columns

# List of the top level task names (task names from the command line).
    attr_reader :top_level_tasks

DEFAULT_RAKEFILES = ['rakefile', 'Rakefile', 'rakefile.rb', 'Rakefile.rb'].freeze

# Initialize a Rake::Application object.
    def initialize
      super
      @name = 'rake'
      @rakefiles = DEFAULT_RAKEFILES.dup
      @rakefile = nil
      @pending_imports = []
      @imported = []
      @loaders = {}
      @default_loader = Rake::DefaultLoader.new
      @original_dir = Dir.pwd
      @top_level_tasks = []
      add_loader('rb', DefaultLoader.new)
      add_loader('rf', DefaultLoader.new)
      add_loader('rake', DefaultLoader.new)
      @tty_output = STDOUT.tty?
      @terminal_columns = ENV['RAKE_COLUMNS'].to_i
    end

# Run the Rake application.  The run method performs the following
    # three steps:
    #
    # * Initialize the command line options (+init+).
    # * Define the tasks (+load_rakefile+).
    # * Run the top level tasks (+run_tasks+).
    #
    # If you wish to build a custom rake command, you should call
    # +init+ on your application.  Then define any tasks.  Finally,
    # call +top_level+ to run your top level tasks.
    def run
      standard_exception_handling do
        init
        load_rakefile
        top_level
      end
    end

# Initialize the command line parameters and app name.
    def init(app_name='rake')
      standard_exception_handling do
        @name = app_name
        handle_options
        collect_tasks
      end
    end

# Find the rakefile and then load it and any pending imports.
    def load_rakefile
      standard_exception_handling do
        raw_load_rakefile
      end
    end

# Run the top level tasks of a Rake application.
    def top_level
      standard_exception_handling do
        if options.show_tasks
          display_tasks_and_comments
        elsif options.show_prereqs
          display_prerequisites
        else
          top_level_tasks.each { |task_name| invoke_task(task_name) }
        end
      end
    end

# Add a loader to handle imported files ending in the extension
    # +ext+.
    def add_loader(ext, loader)
      ext = ".#{ext}" unless ext =~ /^\./
      @loaders[ext] = loader
    end

# Application options from the command line
    def options
      @options ||= OpenStruct.new
    end

# private ----------------------------------------------------------------

def invoke_task(task_string)
      name, args = parse_task_string(task_string)
      t = self[name]
      t.invoke(*args)
    end

def parse_task_string(string)
      if string =~ /^([^\[]+)(\[(.*)\])$/
        name = $1
        args = $3.split(/\s*,\s*/)
      else
        name = string
        args = []
      end
      [name, args]
    end

# Provide standard exception handling for the given block.
    def standard_exception_handling
      begin
        yield
      rescue SystemExit => ex
        # Exit silently with current status
        raise
      rescue OptionParser::InvalidOption => ex
        $stderr.puts ex.message
        exit(false)
      rescue Exception => ex
        # Exit with error message
        display_error_message(ex)
        exit(false)
      end
    end

# Display the error message that caused the exception.
    def display_error_message(ex)
      $stderr.puts "#{name} aborted!"
      $stderr.puts ex.message
      if options.trace
        $stderr.puts ex.backtrace.join("\n")
      else
        $stderr.puts rakefile_location(ex.backtrace)
      end
      $stderr.puts "Tasks: #{ex.chain}" if has_chain?(ex)
      $stderr.puts "(See full trace by running task with --trace)" unless options.trace
    end

# Warn about deprecated usage.
    #
    # Example:
    #    Rake.application.deprecate("import", "Rake.import", caller.first)
    #
    def deprecate(old_usage, new_usage, call_site)
      return if options.ignore_deprecate
      $stderr.puts "WARNING: '#{old_usage}' is deprecated.  " +
        "Please use '#{new_usage}' instead.\n" +
        "    at #{call_site}"
    end

# Does the exception have a task invocation chain?
    def has_chain?(exception)
      exception.respond_to?(:chain) && exception.chain
    end
    private :has_chain?

# True if one of the files in RAKEFILES is in the current directory.
    # If a match is found, it is copied into @rakefile.
    def have_rakefile
      @rakefiles.each do |fn|
        if File.exist?(fn)
          others = Dir.glob(fn, File::FNM_CASEFOLD)
          return others.size == 1 ? others.first : fn
        elsif fn == ''
          return fn
        end
      end
      return nil
    end

# True if we are outputting to TTY, false otherwise
    def tty_output?
      @tty_output
    end

# Override the detected TTY output state (mostly for testing)
    def tty_output=( tty_output_state )
      @tty_output = tty_output_state
    end

# We will truncate output if we are outputting to a TTY or if we've been
    # given an explicit column width to honor
    def truncate_output?
      tty_output? || @terminal_columns.nonzero?
    end

# Display the tasks and comments.
    def display_tasks_and_comments
      displayable_tasks = tasks.select { |t|
        t.comment && t.name =~ options.show_task_pattern
      }
      case options.show_tasks
      when :tasks
        width = displayable_tasks.collect { |t| t.name_with_args.length }.max || 10
        max_column = truncate_output? ? terminal_width - name.size - width - 7 : nil

displayable_tasks.each do |t|
          printf "#{name} %-#{width}s  # %s\n",
            t.name_with_args, max_column ? truncate(t.comment, max_column) : t.comment
        end
      when :describe
        displayable_tasks.each do |t|
          puts "#{name} #{t.name_with_args}"
          t.full_comment.split("\n").each do |line|
            puts "    #{line}"
          end
          puts
        end
      when :lines
        displayable_tasks.each do |t|
          t.locations.each do |loc|
            printf "#{name} %-30s %s\n",t.name_with_args, loc
          end
        end
      else
        fail "Unknown show task mode: '#{options.show_tasks}'"
      end
    end

def terminal_width
      if @terminal_columns.nonzero?
        result = @terminal_columns
      else
        result = unix? ? dynamic_width : 80
      end
      (result < 10) ? 80 : result
    rescue
      80
    end

# Calculate the dynamic width of the
    def dynamic_width
      @dynamic_width ||= (dynamic_width_stty.nonzero? || dynamic_width_tput)
    end

def dynamic_width_stty
      %x{stty size 2>/dev/null}.split[1].to_i
    end

def dynamic_width_tput
      %x{tput cols 2>/dev/null}.to_i
    end

def windows?
      Win32.windows?
    end

def truncate(string, width)
      if string.length <= width
        string
      else
        ( string[0, width-3] || "" ) + "..."
      end
    end

# Display the tasks and prerequisites
    def display_prerequisites
      tasks.each do |t|
        puts "#{name} #{t.name}"
        t.prerequisites.each { |pre| puts "    #{pre}" }
      end
    end

# A list of all the standard options used in rake, suitable for
    # passing to OptionParser.
    def standard_rake_options
      [
        ['--classic-namespace', '-C', "Put Task and FileTask in the top level namespace",
          lambda { |value|
            require 'rake/classic_namespace'
            options.classic_namespace = true
          }
        ],
        ['--describe', '-D [PATTERN]', "Describe the tasks (matching optional PATTERN), then exit.",
          lambda { |value|
            options.show_tasks = :describe
            options.show_task_pattern = Regexp.new(value || '')
            TaskManager.record_task_metadata = true
          }
        ],
        ['--dry-run', '-n', "Do a dry run without executing actions.",
          lambda { |value|
            Rake.verbose(true)
            Rake.nowrite(true)
            options.dryrun = true
            options.trace = true
          }
        ],
        ['--execute',  '-e CODE', "Execute some Ruby code and exit.",
          lambda { |value|
            eval(value)
            exit
          }
        ],
        ['--execute-print',  '-p CODE', "Execute some Ruby code, print the result, then exit.",
          lambda { |value|
            puts eval(value)
            exit
          }
        ],
        ['--execute-continue',  '-E CODE',
          "Execute some Ruby code, then continue with normal task processing.",
          lambda { |value| eval(value) }
        ],
        ['--libdir', '-I LIBDIR', "Include LIBDIR in the search path for required modules.",
          lambda { |value| $:.push(value) }
        ],
        ['--no-search', '--nosearch', '-N', "Do not search parent directories for the Rakefile.",
          lambda { |value| options.nosearch = true }
        ],
        ['--prereqs', '-P', "Display the tasks and dependencies, then exit.",
          lambda { |value| options.show_prereqs = true }
        ],
        ['--quiet', '-q', "Do not log messages to standard output.",
          lambda { |value| Rake.verbose(false) }
        ],
        ['--rakefile', '-f [FILE]', "Use FILE as the rakefile.",
          lambda { |value|
            value ||= ''
            @rakefiles.clear
            @rakefiles << value
          }
        ],
        ['--rakelibdir', '--rakelib', '-R RAKELIBDIR',
          "Auto-import any .rake files in RAKELIBDIR. (default is 'rakelib')",
          # HACK Use File::PATH_SEPARATOR
          lambda { |value| options.rakelib = value.split(':') }
        ],
        ['--require', '-r MODULE', "Require MODULE before executing rakefile.",
          lambda { |value|
            begin
              require value
            rescue LoadError => ex
              begin
                rake_require value
              rescue LoadError
                raise ex
              end
            end
          }
        ],
        ['--rules', "Trace the rules resolution.",
          lambda { |value| options.trace_rules = true }
        ],
        ['--silent', '-s', "Like --quiet, but also suppresses the 'in directory' announcement.",
          lambda { |value|
            Rake.verbose(false)
            options.silent = true
          }
        ],
        ['--system',  '-g',
          "Using system wide (global) rakefiles (usually '~/.rake/*.rake').",
          lambda { |value| options.load_system = true }
        ],
        ['--no-system', '--nosystem', '-G',
          "Use standard project Rakefile search paths, ignore system wide rakefiles.",
          lambda { |value| options.ignore_system = true }
        ],
        ['--tasks', '-T [PATTERN]', "Display the tasks (matching optional PATTERN) with descriptions, then exit.",
          lambda { |value|
            options.show_tasks = :tasks
            options.show_task_pattern = Regexp.new(value || '')
            Rake::TaskManager.record_task_metadata = true
          }
        ],
        ['--trace', '-t', "Turn on invoke/execute tracing, enable full backtrace.",
          lambda { |value|
            options.trace = true
            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|
            options.show_tasks = :lines
            options.show_task_pattern = Regexp.new(value || '')
            Rake::TaskManager.record_task_metadata = true
          }
        ],
        ['--no-deprecation-warnings', '-X', "Disable the deprecation warnings.",
          lambda { |value|
            options.ignore_deprecate = true
          }
        ],
      ]
    end

# Read and handle the command line options.
    def handle_options
      options.rakelib = ['rakelib']

OptionParser.new do |opts|
        opts.banner = "rake [-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!

# If class namespaces are requested, set the global options
      # according to the values in the options structure.
      if options.classic_namespace
        $show_tasks = options.show_tasks
        $show_prereqs = options.show_prereqs
        $trace = options.trace
        $dryrun = options.dryrun
        $silent = options.silent
      end
    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=$LOAD_PATH, loaded=$")
      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
      here = Dir.pwd
      while ! (fn = have_rakefile)
        Dir.chdir("..")
        if Dir.pwd == here || options.nosearch
          return nil
        end
        here = Dir.pwd
      end
      [fn, here]
    ensure
      Dir.chdir(Rake.original_dir)
    end

def print_rakefile_directory(location)
      $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)
        $rakefile = @rakefile if options.classic_namespace
        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)
      Dir[path.gsub("\\", '/')].each(&block)
    end
    private :glob

# The directory path containing the system wide rakefiles.
    def system_dir
      @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.
    def collect_tasks
      @top_level_tasks = []
      ARGV.each do |arg|
        if arg =~ /^(\w+)=(.*)$/
          ENV[$1] = $2
        else
          @top_level_tasks << arg unless arg =~ /^-/
        end
      end
      @top_level_tasks.push("default") if @top_level_tasks.size == 0
    end

# Add a file to the list of files to be imported.
    def add_import(fn)
      @pending_imports << fn
    end

# Load the pending list of imported files.
    def load_imports
      while fn = @pending_imports.shift
        next if @imported.member?(fn)
        if fn_task = lookup(fn)
          fn_task.invoke
        end
        ext = File.extname(fn)
        loader = @loaders[ext] || @default_loader
        loader.load(fn)
        @imported << fn
      end
    end

# Warn about deprecated use of top level constant names.
    def const_warning(const_name)
      @const_warning ||= false
      if ! @const_warning
        $stderr.puts %{WARNING: Deprecated reference to top-level constant '#{const_name}' } +
          %{found at: #{rakefile_location}} # '
        $stderr.puts %{    Use --classic-namespace on rake command}
        $stderr.puts %{    or 'require "rake/classic_namespace"' in Rakefile}
      end
      @const_warning = true
    end

def rakefile_location backtrace = caller
      backtrace.map { |t| t[/([^:]+):/,1] }

re = /^#{@rakefile}$/
      re = /#{re.source}/i if windows?

backtrace.find { |str| str =~ re } || ''
    end
  end
end

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