Fresh start

1 files changed, 790 insertions, 0 deletions

diff --git a/jni/ruby/lib/rake/application.rb b/jni/ruby/lib/rake/application.rb
new file mode 100644
index 0000000..bd72a2e
--- /dev/null
+++ b/jni/ruby/lib/rake/application.rb
@@ -0,0 +1,790 @@
+require 'shellwords'
+require 'optparse'
+
+require 'rake/task_manager'
+require 'rake/file_list'
+require 'rake/thread_pool'
+require 'rake/thread_history_display'
+require 'rake/trace_output'
+require 'rake/win32'
+
+module Rake
+
+  CommandLineOptionError = Class.new(StandardError)
+
+  ##
+  # Rake main application object.  When invoking +rake+ from the
+  # command line, a Rake::Application object is created and run.
+
+  class Application
+    include TaskManager
+    include TraceOutput
+
+    # 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 (+top_level+).
+    #
+    # 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
+        args = handle_options
+        collect_command_line_tasks(args)
+      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
+      run_with_threads 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
+
+    # Run the given block with the thread startup and shutdown.
+    def run_with_threads
+      thread_pool.gather_history if options.job_stats == :history
+
+      yield
+
+      thread_pool.join
+      if options.job_stats
+        stats = thread_pool.statistics
+        puts "Maximum active threads: #{stats[:max_active_threads]} + main"
+        puts "Total threads in play:  #{stats[:total_threads_in_play]} + main"
+      end
+      ThreadHistoryDisplay.new(thread_pool.history).show if
+        options.job_stats == :history
+    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
+
+    # Return the thread pool used for multithreaded processing.
+    def thread_pool             # :nodoc:
+      @thread_pool ||= ThreadPool.new(options.thread_pool_size || Rake.suggested_thread_count-1)
+    end
+
+    # internal ----------------------------------------------------------------
+
+    # Invokes a task with arguments that are extracted from +task_string+
+    def invoke_task(task_string) # :nodoc:
+      name, args = parse_task_string(task_string)
+      t = self[name]
+      t.invoke(*args)
+    end
+
+    def parse_task_string(string) # :nodoc:
+      /^([^\[]+)(?:\[(.*)\])$/ =~ string.to_s
+
+      name           = $1
+      remaining_args = $2
+
+      return string, [] unless name
+      return name,   [] if     remaining_args.empty?
+
+      args = []
+
+      begin
+        /((?:[^\\,]|\\.)*?)\s*(?:,\s*(.*))?$/ =~ remaining_args
+
+        remaining_args = $2
+        args << $1.gsub(/\\(.)/, '\1')
+      end while remaining_args
+
+      return name, args
+    end
+
+    # Provide standard exception handling for the given block.
+    def standard_exception_handling # :nodoc:
+      yield
+    rescue SystemExit
+      # 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_because_of_exception(ex)
+    end
+
+    # Exit the program because of an unhandle exception.
+    # (may be overridden by subclasses)
+    def exit_because_of_exception(ex) # :nodoc:
+      exit(false)
+    end
+
+    # Display the error message that caused the exception.
+    def display_error_message(ex) # :nodoc:
+      trace "#{name} aborted!"
+      display_exception_details(ex)
+      trace "Tasks: #{ex.chain}" if has_chain?(ex)
+      trace "(See full trace by running task with --trace)" unless
+         options.backtrace
+    end
+
+    def display_exception_details(ex) # :nodoc:
+      seen = Thread.current[:rake_display_exception_details_seen] ||= []
+      return if seen.include? ex
+      seen << ex
+
+      display_exception_message_details(ex)
+      display_exception_backtrace(ex)
+      display_exception_details(ex.cause) if has_cause?(ex)
+    end
+
+    def has_cause?(ex) # :nodoc:
+      ex.respond_to?(:cause) && ex.cause
+    end
+
+    def display_exception_message_details(ex) # :nodoc:
+      if ex.instance_of?(RuntimeError)
+        trace ex.message
+      else
+        trace "#{ex.class.name}: #{ex.message}"
+      end
+    end
+
+    def display_exception_backtrace(ex) # :nodoc:
+      if options.backtrace
+        trace ex.backtrace.join("\n")
+      else
+        trace Backtrace.collapse(ex.backtrace).join("\n")
+      end
+    end
+
+    # Warn about deprecated usage.
+    #
+    # Example:
+    #    Rake.application.deprecate("import", "Rake.import", caller.first)
+    #
+    def deprecate(old_usage, new_usage, call_site) # :nodoc:
+      unless options.ignore_deprecate
+        $stderr.puts "WARNING: '#{old_usage}' is deprecated.  " +
+          "Please use '#{new_usage}' instead.\n" +
+          "    at #{call_site}"
+      end
+    end
+
+    # Does the exception have a task invocation chain?
+    def has_chain?(exception) # :nodoc:
+      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 # :nodoc:
+      @rakefiles.each do |fn|
+        if File.exist?(fn)
+          others = FileList.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? # :nodoc:
+      @tty_output
+    end
+
+    # Override the detected TTY output state (mostly for testing)
+    def tty_output=(tty_output_state) # :nodoc:
+      @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? # :nodoc:
+      tty_output? || @terminal_columns.nonzero?
+    end
+
+    # Display the tasks and comments.
+    def display_tasks_and_comments # :nodoc:
+      displayable_tasks = tasks.select { |t|
+        (options.show_all_tasks || t.comment) &&
+          t.name =~ options.show_task_pattern
+      }
+      case options.show_tasks
+      when :tasks
+        width = displayable_tasks.map { |t| t.name_with_args.length }.max || 10
+        if truncate_output?
+          max_column = terminal_width - name.size - width - 7
+        else
+          max_column = nil
+        end
+
+        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}"
+          comment = t.full_comment || ""
+          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 # :nodoc:
+      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 # :nodoc:
+      @dynamic_width ||= (dynamic_width_stty.nonzero? || dynamic_width_tput)
+    end
+
+    def dynamic_width_stty # :nodoc:
+      %x{stty size 2>/dev/null}.split[1].to_i
+    end
+
+    def dynamic_width_tput # :nodoc:
+      %x{tput cols 2>/dev/null}.to_i
+    end
+
+    def unix? # :nodoc:
+      RbConfig::CONFIG['host_os'] =~
+        /(aix|darwin|linux|(net|free|open)bsd|cygwin|solaris|irix|hpux)/i
+    end
+
+    def windows? # :nodoc:
+      Win32.windows?
+    end
+
+    def truncate(string, width) # :nodoc:
+      if string.nil?
+        ""
+      elsif string.length <= width
+        string
+      else
+        (string[0, width - 3] || "") + "..."
+      end
+    end
+
+    # Display the tasks and prerequisites
+    def display_prerequisites # :nodoc:
+      tasks.each do |t|
+        puts "#{name} #{t.name}"
+        t.prerequisites.each { |pre| puts "    #{pre}" }
+      end
+    end
+
+    def trace(*strings) # :nodoc:
+      options.trace_output ||= $stderr
+      trace_on(options.trace_output, *strings)
+    end
+
+    def sort_options(options) # :nodoc:
+      options.sort_by { |opt|
+        opt.select { |o| o =~ /^-/ }.map { |o| o.downcase }.sort.reverse
+      }
+    end
+    private :sort_options
+
+    # A list of all the standard options used in rake, suitable for
+    # passing to OptionParser.
+    def standard_rake_options # :nodoc:
+      sort_options(
+        [
+          ['--all', '-A',
+            "Show all tasks, even uncommented ones (in combination with -T or -D)",
+            lambda { |value|
+              options.show_all_tasks = value
+            }
+          ],
+          ['--backtrace=[OUT]',
+            "Enable full backtrace.  OUT can be stderr (default) or stdout.",
+            lambda { |value|
+              options.backtrace = true
+              select_trace_output(options, 'backtrace', value)
+            }
+          ],
+          ['--build-all', '-B',
+           "Build all prerequisites, including those which are up-to-date.",
+           lambda { |value|
+             options.build_all = true
+           }
+          ],
+          ['--comments',
+            "Show commented tasks only",
+            lambda { |value|
+              options.show_all_tasks = !value
+            }
+          ],
+          ['--describe', '-D [PATTERN]',
+            "Describe the tasks (matching optional PATTERN), then exit.",
+            lambda { |value|
+              select_tasks_to_show(options, :describe, value)
+            }
+          ],
+          ['--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) }
+          ],
+          ['--jobs',  '-j [NUMBER]',
+            "Specifies the maximum number of tasks to execute in parallel. " +
+            "(default is number of CPU cores + 4)",
+            lambda { |value|
+              if value.nil? || value == ''
+                value = FIXNUM_MAX
+              elsif value =~ /^\d+$/
+                value = value.to_i
+              else
+                value = Rake.suggested_thread_count
+              end
+              value = 1 if value < 1
+              options.thread_pool_size = value - 1
+            }
+          ],
+          ['--job-stats [LEVEL]',
+            "Display job statistics. " +
+            "LEVEL=history displays a complete job list",
+            lambda { |value|
+              if value =~ /^history/i
+                options.job_stats = :history
+              else
+                options.job_stats = true
+              end
+            }
+          ],
+          ['--libdir', '-I LIBDIR',
+            "Include LIBDIR in the search path for required modules.",
+            lambda { |value| $:.push(value) }
+          ],
+          ['--multitask', '-m',
+            "Treat all tasks as multitasks.",
+            lambda { |value| options.always_multitask = true }
+          ],
+          ['--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 [FILENAME]',
+            "Use FILENAME as the rakefile to search for.",
+            lambda { |value|
+              value ||= ''
+              @rakefiles.clear
+              @rakefiles << value
+            }
+          ],
+          ['--rakelibdir', '--rakelib', '-R RAKELIBDIR',
+            "Auto-import any .rake files in RAKELIBDIR. " +
+            "(default is 'rakelib')",
+            lambda { |value|
+              options.rakelib = value.split(File::PATH_SEPARATOR)
+            }
+          ],
+          ['--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
+            }
+          ],
+          ['--suppress-backtrace PATTERN',
+            "Suppress backtrace lines matching regexp PATTERN. " +
+            "Ignored if --trace is on.",
+            lambda { |value|
+              options.suppress_backtrace_pattern = Regexp.new(value)
+            }
+          ],
+          ['--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|
+              select_tasks_to_show(options, :tasks, value)
+            }
+          ],
+          ['--trace=[OUT]', '-t',
+            "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