Added Action Service to the repository

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@658 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

1 files changed, 1360 insertions, 0 deletions

diff --git a/actionservice/setup.rb b/actionservice/setup.rb
new file mode 100644
index 0000000000..0807023db2
--- /dev/null
+++ b/actionservice/setup.rb
@@ -0,0 +1,1360 @@
+#
+# setup.rb
+#
+# Copyright (c) 2000-2004 Minero Aoki
+#
+# This program is free software.
+# You can distribute/modify this program under the terms of
+# the GNU LGPL, Lesser General Public License version 2.1.
+#
+
+unless Enumerable.method_defined?(:map)   # Ruby 1.4.6
+  module Enumerable
+    alias map collect
+  end
+end
+
+unless File.respond_to?(:read)   # Ruby 1.6
+  def File.read(fname)
+    open(fname) {|f|
+      return f.read
+    }
+  end
+end
+
+def File.binread(fname)
+  open(fname, 'rb') {|f|
+    return f.read
+  }
+end
+
+# for corrupted windows stat(2)
+def File.dir?(path)
+  File.directory?((path[-1,1] == '/') ? path : path + '/')
+end
+
+
+class SetupError < StandardError; end
+
+def setup_rb_error(msg)
+  raise SetupError, msg
+end
+
+#
+# Config
+#
+
+if arg = ARGV.detect {|arg| /\A--rbconfig=/ =~ arg }
+  ARGV.delete(arg)
+  require arg.split(/=/, 2)[1]
+  $".push 'rbconfig.rb'
+else
+  require 'rbconfig'
+end
+
+def multipackage_install?
+  FileTest.directory?(File.dirname($0) + '/packages')
+end
+
+
+class ConfigItem
+  def initialize(name, template, default, desc)
+    @name = name.freeze
+    @template = template
+    @value = default
+    @default = default.dup.freeze
+    @description = desc
+  end
+
+  attr_reader :name
+  attr_reader :description
+
+  attr_accessor :default
+  alias help_default default
+
+  def help_opt
+    "--#{@name}=#{@template}"
+  end
+
+  def value
+    @value
+  end
+
+  def eval(table)
+    @value.gsub(%r<\$([^/]+)>) { table[$1] }
+  end
+
+  def set(val)
+    @value = check(val)
+  end
+
+  private
+
+  def check(val)
+    setup_rb_error "config: --#{name} requires argument" unless val
+    val
+  end
+end
+
+class BoolItem < ConfigItem
+  def config_type
+    'bool'
+  end
+
+  def help_opt
+    "--#{@name}"
+  end
+
+  private
+
+  def check(val)
+    return 'yes' unless val
+    unless /\A(y(es)?|n(o)?|t(rue)?|f(alse))\z/i =~ val
+      setup_rb_error "config: --#{@name} accepts only yes/no for argument"
+    end
+    (/\Ay(es)?|\At(rue)/i =~ value) ? 'yes' : 'no'
+  end
+end
+
+class PathItem < ConfigItem
+  def config_type
+    'path'
+  end
+
+  private
+
+  def check(path)
+    setup_rb_error "config: --#{@name} requires argument"  unless path
+    path[0,1] == '$' ? path : File.expand_path(path)
+  end
+end
+
+class ProgramItem < ConfigItem
+  def config_type
+    'program'
+  end
+end
+
+class SelectItem < ConfigItem
+  def initialize(name, template, default, desc)
+    super
+    @ok = template.split('/')
+  end
+
+  def config_type
+    'select'
+  end
+
+  private
+
+  def check(val)
+    unless @ok.include?(val.strip)
+      setup_rb_error "config: use --#{@name}=#{@template} (#{val})"
+    end
+    val.strip
+  end
+end
+
+class PackageSelectionItem < ConfigItem
+  def initialize(name, template, default, help_default, desc)
+    super name, template, default, desc
+    @help_default = help_default
+  end
+
+  attr_reader :help_default
+
+  def config_type
+    'package'
+  end
+
+  private
+
+  def check(val)
+    unless File.dir?("packages/#{val}")
+      setup_rb_error "config: no such package: #{val}"
+    end
+    val
+  end
+end
+
+class ConfigTable_class
+
+  def initialize(items)
+    @items = items
+    @table = {}
+    items.each do |i|
+      @table[i.name] = i
+    end
+    ALIASES.each do |ali, name|
+      @table[ali] = @table[name]
+    end
+  end
+
+  include Enumerable
+
+  def each(&block)
+    @items.each(&block)
+  end
+
+  def key?(name)
+    @table.key?(name)
+  end
+
+  def lookup(name)
+    @table[name] or raise ArgumentError, "no such config item: #{name}"
+  end
+
+  def add(item)
+    @items.push item
+    @table[item.name] = item
+  end
+
+  def remove(name)
+    item = lookup(name)
+    @items.delete_if {|i| i.name == name }
+    @table.delete_if {|name, i| i.name == name }
+    item
+  end
+
+  def new
+    dup()
+  end
+
+  def savefile
+    '.config'
+  end
+
+  def load
+    begin
+      t = dup()
+      File.foreach(savefile()) do |line|
+        k, v = *line.split(/=/, 2)
+        t[k] = v.strip
+      end
+      t
+    rescue Errno::ENOENT
+      setup_rb_error $!.message + "#{File.basename($0)} config first"
+    end
+  end
+
+  def save
+    @items.each {|i| i.value }
+    File.open(savefile(), 'w') {|f|
+      @items.each do |i|
+        f.printf "%s=%s\n", i.name, i.value if i.value
+      end
+    }
+  end
+
+  def [](key)
+    lookup(key).eval(self)
+  end
+
+  def []=(key, val)
+    lookup(key).set val
+  end
+
+end
+
+c = ::Config::CONFIG
+
+rubypath = c['bindir'] + '/' + c['ruby_install_name']
+
+major = c['MAJOR'].to_i
+minor = c['MINOR'].to_i
+teeny = c['TEENY'].to_i
+version = "#{major}.#{minor}"
+
+# ruby ver. >= 1.4.4?
+newpath_p = ((major >= 2) or
+             ((major == 1) and
+              ((minor >= 5) or
+               ((minor == 4) and (teeny >= 4)))))
+
+if c['rubylibdir']
+  # V < 1.6.3
+  _stdruby         = c['rubylibdir']
+  _siteruby        = c['sitedir']
+  _siterubyver     = c['sitelibdir']
+  _siterubyverarch = c['sitearchdir']
+elsif newpath_p
+  # 1.4.4 <= V <= 1.6.3
+  _stdruby         = "$prefix/lib/ruby/#{version}"
+  _siteruby        = c['sitedir']
+  _siterubyver     = "$siteruby/#{version}"
+  _siterubyverarch = "$siterubyver/#{c['arch']}"
+else
+  # V < 1.4.4
+  _stdruby         = "$prefix/lib/ruby/#{version}"
+  _siteruby        = "$prefix/lib/ruby/#{version}/site_ruby"
+  _siterubyver     = _siteruby
+  _siterubyverarch = "$siterubyver/#{c['arch']}"
+end
+libdir = '-* dummy libdir *-'
+stdruby = '-* dummy rubylibdir *-'
+siteruby = '-* dummy site_ruby *-'
+siterubyver = '-* dummy site_ruby version *-'
+parameterize = lambda {|path|
+  path.sub(/\A#{Regexp.quote(c['prefix'])}/, '$prefix')\
+      .sub(/\A#{Regexp.quote(libdir)}/,      '$libdir')\
+      .sub(/\A#{Regexp.quote(stdruby)}/,     '$stdruby')\
+      .sub(/\A#{Regexp.quote(siteruby)}/,    '$siteruby')\
+      .sub(/\A#{Regexp.quote(siterubyver)}/, '$siterubyver')
+}
+libdir          = parameterize.call(c['libdir'])
+stdruby         = parameterize.call(_stdruby)
+siteruby        = parameterize.call(_siteruby)
+siterubyver     = parameterize.call(_siterubyver)
+siterubyverarch = parameterize.call(_siterubyverarch)
+
+if arg = c['configure_args'].split.detect {|arg| /--with-make-prog=/ =~ arg }
+  makeprog = arg.sub(/'/, '').split(/=/, 2)[1]
+else
+  makeprog = 'make'
+end
+
+common_conf = [
+  PathItem.new('prefix', 'path', c['prefix'],
+               'path prefix of target environment'),
+  PathItem.new('bindir', 'path', parameterize.call(c['bindir']),
+               'the directory for commands'),
+  PathItem.new('libdir', 'path', libdir,
+               'the directory for libraries'),
+  PathItem.new('datadir', 'path', parameterize.call(c['datadir']),
+               'the directory for shared data'),
+  PathItem.new('mandir', 'path', parameterize.call(c['mandir']),
+               'the directory for man pages'),
+  PathItem.new('sysconfdir', 'path', parameterize.call(c['sysconfdir']),
+               'the directory for man pages'),
+  PathItem.new('stdruby', 'path', stdruby,
+               'the directory for standard ruby libraries'),
+  PathItem.new('siteruby', 'path', siteruby,
+      'the directory for version-independent aux ruby libraries'),
+  PathItem.new('siterubyver', 'path', siterubyver,
+               'the directory for aux ruby libraries'),
+  PathItem.new('siterubyverarch', 'path', siterubyverarch,
+               'the directory for aux ruby binaries'),
+  PathItem.new('rbdir', 'path', '$siterubyver',
+               'the directory for ruby scripts'),
+  PathItem.new('sodir', 'path', '$siterubyverarch',
+               'the directory for ruby extentions'),
+  PathItem.new('rubypath', 'path', rubypath,
+               'the path to set to #! line'),
+  ProgramItem.new('rubyprog', 'name', rubypath,
+                  'the ruby program using for installation'),
+  ProgramItem.new('makeprog', 'name', makeprog,
+                  'the make program to compile ruby extentions'),
+  SelectItem.new('shebang', 'all/ruby/never', 'ruby',
+                 'shebang line (#!) editing mode'),
+  BoolItem.new('without-ext', 'yes/no', 'no',
+               'does not compile/install ruby extentions')
+]
+class ConfigTable_class   # open again
+  ALIASES = {
+    'std-ruby'         => 'stdruby',
+    'site-ruby-common' => 'siteruby',     # For backward compatibility
+    'site-ruby'        => 'siterubyver',  # For backward compatibility
+    'bin-dir'          => 'bindir',
+    'bin-dir'          => 'bindir',
+    'rb-dir'           => 'rbdir',
+    'so-dir'           => 'sodir',
+    'data-dir'         => 'datadir',
+    'ruby-path'        => 'rubypath',
+    'ruby-prog'        => 'rubyprog',
+    'ruby'             => 'rubyprog',
+    'make-prog'        => 'makeprog',
+    'make'             => 'makeprog'
+  }
+end
+multipackage_conf = [
+  PackageSelectionItem.new('with', 'name,name...', '', 'ALL',
+                           'package names that you want to install'),
+  PackageSelectionItem.new('without', 'name,name...', '', 'NONE',
+                           'package names that you do not want to install')
+]
+if multipackage_install?
+  ConfigTable = ConfigTable_class.new(common_conf + multipackage_conf)
+else
+  ConfigTable = ConfigTable_class.new(common_conf)
+end
+
+
+module MetaConfigAPI
+
+  def eval_file_ifexist(fname)
+    instance_eval File.read(fname), fname, 1 if File.file?(fname)
+  end
+
+  def config_names
+    ConfigTable.map {|i| i.name }
+  end
+
+  def config?(name)
+    ConfigTable.key?(name)
+  end
+
+  def bool_config?(name)
+    ConfigTable.lookup(name).config_type == 'bool'
+  end
+
+  def path_config?(name)
+    ConfigTable.lookup(name).config_type == 'path'
+  end
+
+  def value_config?(name)
+    case ConfigTable.lookup(name).config_type
+    when 'bool', 'path'
+      true
+    else
+      false
+    end
+  end
+
+  def add_config(item)
+    ConfigTable.add item
+  end
+
+  def add_bool_config(name, default, desc)
+    ConfigTable.add BoolItem.new(name, 'yes/no', default ? 'yes' : 'no', desc)
+  end
+
+  def add_path_config(name, default, desc)
+    ConfigTable.add PathItem.new(name, 'path', default, desc)
+  end
+
+  def set_config_default(name, default)
+    ConfigTable.lookup(name).default = default
+  end
+
+  def remove_config(name)
+    ConfigTable.remove(name)
+  end
+
+end
+
+
+#
+# File Operations
+#
+
+module FileOperations
+
+  def mkdir_p(dirname, prefix = nil)
+    dirname = prefix + File.expand_path(dirname) if prefix
+    $stderr.puts "mkdir -p #{dirname}" if verbose?
+    return if no_harm?
+
+    # does not check '/'... it's too abnormal case
+    dirs = File.expand_path(dirname).split(%r<(?=/)>)
+    if /\A[a-z]:\z/i =~ dirs[0]
+      disk = dirs.shift
+      dirs[0] = disk + dirs[0]
+    end
+    dirs.each_index do |idx|
+      path = dirs[0..idx].join('')
+      Dir.mkdir path unless File.dir?(path)
+    end
+  end
+
+  def rm_f(fname)
+    $stderr.puts "rm -f #{fname}" if verbose?
+    return if no_harm?
+
+    if File.exist?(fname) or File.symlink?(fname)
+      File.chmod 0777, fname
+      File.unlink fname
+    end
+  end
+
+  def rm_rf(dn)
+    $stderr.puts "rm -rf #{dn}" if verbose?
+    return if no_harm?
+
+    Dir.chdir dn
+    Dir.foreach('.') do |fn|
+      next if fn == '.'
+      next if fn == '..'
+      if File.dir?(fn)
+        verbose_off {
+          rm_rf fn
+        }
+      else
+        verbose_off {
+          rm_f fn
+        }
+      end
+    end
+    Dir.chdir '..'
+    Dir.rmdir dn
+  end
+
+  def move_file(src, dest)
+    File.unlink dest if File.exist?(dest)
+    begin
+      File.rename src, dest
+    rescue
+      File.open(dest, 'wb') {|f| f.write File.binread(src) }
+      File.chmod File.stat(src).mode, dest
+      File.unlink src
+    end
+  end
+
+  def install(from, dest, mode, prefix = nil)
+    $stderr.puts "install #{from} #{dest}" if verbose?
+    return if no_harm?
+
+    realdest = prefix ? prefix + File.expand_path(dest) : dest
+    realdest = File.join(realdest, File.basename(from)) if File.dir?(realdest)
+    str = File.binread(from)
+    if diff?(str, realdest)
+      verbose_off {
+        rm_f realdest if File.exist?(realdest)
+      }
+      File.open(realdest, 'wb') {|f|
+        f.write str
+      }
+      File.chmod mode, realdest
+
+      File.open("#{objdir_root()}/InstalledFiles", 'a') {|f|
+        if prefix
+          f.puts realdest.sub(prefix, '')
+        else
+          f.puts realdest
+        end
+      }
+    end
+  end
+
+  def diff?(new_content, path)
+    return true unless File.exist?(path)
+    new_content != File.binread(path)
+  end
+
+  def command(str)
+    $stderr.puts str if verbose?
+    system str or raise RuntimeError, "'system #{str}' failed"
+  end
+
+  def ruby(str)
+    command config('rubyprog') + ' ' + str
+  end
+  
+  def make(task = '')
+    command config('makeprog') + ' ' + task
+  end
+
+  def extdir?(dir)
+    File.exist?(dir + '/MANIFEST')
+  end
+
+  def all_files_in(dirname)
+    Dir.open(dirname) {|d|
+      return d.select {|ent| File.file?("#{dirname}/#{ent}") }
+    }
+  end
+
+  REJECT_DIRS = %w(
+    CVS SCCS RCS CVS.adm .svn
+  )
+
+  def all_dirs_in(dirname)
+    Dir.open(dirname) {|d|
+      return d.select {|n| File.dir?("#{dirname}/#{n}") } - %w(. ..) - REJECT_DIRS
+    }
+  end
+
+end
+
+
+#
+# Main Installer
+#
+
+module HookUtils
+
+  def run_hook(name)
+    try_run_hook "#{curr_srcdir()}/#{name}" or
+    try_run_hook "#{curr_srcdir()}/#{name}.rb"
+  end
+
+  def try_run_hook(fname)
+    return false unless File.file?(fname)
+    begin
+      instance_eval File.read(fname), fname, 1
+    rescue
+      setup_rb_error "hook #{fname} failed:\n" + $!.message
+    end
+    true
+  end
+
+end
+
+
+module HookScriptAPI
+
+  def get_config(key)
+    @config[key]
+  end
+
+  alias config get_config
+
+  def set_config(key, val)
+    @config[key] = val
+  end
+
+  #
+  # srcdir/objdir (works only in the package directory)
+  #
+
+  #abstract srcdir_root
+  #abstract objdir_root
+  #abstract relpath
+
+  def curr_srcdir
+    "#{srcdir_root()}/#{relpath()}"
+  end
+
+  def curr_objdir
+    "#{objdir_root()}/#{relpath()}"
+  end
+
+  def srcfile(path)
+    "#{curr_srcdir()}/#{path}"
+  end
+
+  def srcexist?(path)
+    File.exist?(srcfile(path))
+  end
+
+  def srcdirectory?(path)
+    File.dir?(srcfile(path))
+  end
+  
+  def srcfile?(path)
+    File.file? srcfile(path)
+  end
+
+  def srcentries(path = '.')
+    Dir.open("#{curr_srcdir()}/#{path}") {|d|
+      return d.to_a - %w(. ..)
+    }
+  end
+
+  def srcfiles(path = '.')
+    srcentries(path).select {|fname|
+      File.file?(File.join(curr_srcdir(), path, fname))
+    }
+  end
+
+  def srcdirectories(path = '.')
+    srcentries(path).select {|fname|
+      File.dir?(File.join(curr_srcdir(), path, fname))
+    }
+  end
+
+end
+
+
+class ToplevelInstaller
+
+  Version   = '3.3.1'
+  Copyright = 'Copyright (c) 2000-2004 Minero Aoki'
+
+  TASKS = [
+    [ 'all',      'do config, setup, then install' ],
+    [ 'config',   'saves your configurations' ],
+    [ 'show',     'shows current configuration' ],
+    [ 'setup',    'compiles ruby extentions and others' ],
+    [ 'install',  'installs files' ],
+    [ 'clean',    "does `make clean' for each extention" ],
+    [ 'distclean',"does `make distclean' for each extention" ]
+  ]
+
+  def ToplevelInstaller.invoke
+    instance().invoke
+  end
+
+  @singleton = nil
+
+  def ToplevelInstaller.instance
+    @singleton ||= new(File.dirname($0))
+    @singleton
+  end
+
+  include MetaConfigAPI
+
+  def initialize(ardir_root)
+    @config = nil
+    @options = { 'verbose' => true }
+    @ardir = File.expand_path(ardir_root)
+  end
+
+  def inspect
+    "#<#{self.class} #{__id__()}>"
+  end
+
+  def invoke
+    run_metaconfigs
+    case task = parsearg_global()
+    when nil, 'all'
+      @config = load_config('config')
+      parsearg_config
+      init_installers
+      exec_config
+      exec_setup
+      exec_install
+    else
+      @config = load_config(task)
+      __send__ "parsearg_#{task}"
+      init_installers
+      __send__ "exec_#{task}"
+    end
+  end
+  
+  def run_metaconfigs
+    eval_file_ifexist "#{@ardir}/metaconfig"
+  end
+
+  def load_config(task)
+    case task
+    when 'config'
+      ConfigTable.new
+    when 'clean', 'distclean'
+      if File.exist?(ConfigTable.savefile)
+      then ConfigTable.load
+      else ConfigTable.new
+      end
+    else
+      ConfigTable.load
+    end
+  end
+
+  def init_installers
+    @installer = Installer.new(@config, @options, @ardir, File.expand_path('.'))
+  end
+
+  #
+  # Hook Script API bases
+  #
+
+  def srcdir_root
+    @ardir
+  end
+
+  def objdir_root
+    '.'
+  end
+
+  def relpath
+    '.'
+  end
+
+  #
+  # Option Parsing
+  #
+
+  def parsearg_global
+    valid_task = /\A(?:#{TASKS.map {|task,desc| task }.join '|'})\z/
+
+    while arg = ARGV.shift
+      case arg
+      when /\A\w+\z/
+        setup_rb_error "invalid task: #{arg}" unless valid_task =~ arg
+        return arg
+
+      when '-q', '--quiet'
+        @options['verbose'] = false
+
+      when       '--verbose'
+        @options['verbose'] = true
+
+      when '-h', '--help'
+        print_usage $stdout
+        exit 0
+
+      when '-v', '--version'
+        puts "#{File.basename($0)} version #{Version}"
+        exit 0
+      
+      when '--copyright'
+        puts Copyright
+        exit 0
+
+      else
+        setup_rb_error "unknown global option '#{arg}'"
+      end
+    end
+
+    nil
+  end
+
+
+  def parsearg_no_options
+    unless ARGV.empty?
+      setup_rb_error "#{task}:  unknown options: #{ARGV.join ' '}"
+    end
+  end
+
+  alias parsearg_show       parsearg_no_options
+  alias parsearg_setup      parsearg_no_options
+  alias parsearg_clean      parsearg_no_options
+  alias parsearg_distclean  parsearg_no_options
+
+  def parsearg_config
+    re = /\A--(#{ConfigTable.map {|i| i.name }.join('|')})(?:=(.*))?\z/
+    @options['config-opt'] = []
+
+    while i = ARGV.shift
+      if /\A--?\z/ =~ i
+        @options['config-opt'] = ARGV.dup
+        break
+      end
+      m = re.match(i)  or setup_rb_error "config: unknown option #{i}"
+      name, value = *m.to_a[1,2]
+      @config[name] = value
+    end
+  end
+
+  def parsearg_install
+    @options['no-harm'] = false
+    @options['install-prefix'] = ''
+    while a = ARGV.shift
+      case a
+      when /\A--no-harm\z/
+        @options['no-harm'] = true
+      when /\A--prefix=(.*)\z/
+        path = $1
+        path = File.expand_path(path) unless path[0,1] == '/'
+        @options['install-prefix'] = path
+      else
+        setup_rb_error "install: unknown option #{a}"
+      end
+    end
+  end
+
+  def print_usage(out)
+    out.puts 'Typical Installation Procedure:'
+    out.puts "  $ ruby #{File.basename $0} config"
+    out.puts "  $ ruby #{File.basename $0} setup"
+    out.puts "  # ruby #{File.basename $0} install (may require root privilege)"
+    out.puts
+    out.puts 'Detailed Usage:'
+    out.puts "  ruby #{File.basename $0} <global option>"
+    out.puts "  ruby #{File.basename $0} [<global options>] <task> [<task options>]"
+
+    fmt = "  %-24s %s\n"
+    out.puts
+    out.puts 'Global options:'
+    out.printf fmt, '-q,--quiet',   'suppress message outputs'
+    out.printf fmt, '   --verbose', 'output messages verbosely'
+    out.printf fmt, '-h,--help',    'print this message'
+    out.printf fmt, '-v,--version', 'print version and quit'
+    out.printf fmt, '   --copyright',  'print copyright and quit'
+    out.puts
+    out.puts 'Tasks:'
+    TASKS.each do |name, desc|
+      out.printf fmt, name, desc
+    end
+
+    fmt = "  %-24s %s [%s]\n"
+    out.puts
+    out.puts 'Options for CONFIG or ALL:'
+    ConfigTable.each do |item|
+      out.printf fmt, item.help_opt, item.description, item.help_default
+    end
+    out.printf fmt, '--rbconfig=path', 'rbconfig.rb to load',"running ruby's"
+    out.puts
+    out.puts 'Options for INSTALL:'
+    out.printf fmt, '--no-harm', 'only display what to do if given', 'off'
+    out.printf fmt, '--prefix=path',  'install path prefix', '$prefix'
+    out.puts
+  end
+
+  #
+  # Task Handlers
+  #
+
+  def exec_config
+    @installer.exec_config
+    @config.save   # must be final
+  end
+
+  def exec_setup
+    @installer.exec_setup
+  end
+
+  def exec_install
+    @installer.exec_install
+  end
+
+  def exec_show
+    ConfigTable.each do |i|
+      printf "%-20s %s\n", i.name, i.value
+    end
+  end
+
+  def exec_clean
+    @installer.exec_clean
+  end
+
+  def exec_distclean
+    @installer.exec_distclean
+  end
+
+end
+
+
+class ToplevelInstallerMulti < ToplevelInstaller
+
+  include HookUtils
+  include HookScriptAPI
+  include FileOperations
+
+  def initialize(ardir)
+    super
+    @packages = all_dirs_in("#{@ardir}/packages")
+    raise 'no package exists' if @packages.empty?
+  end
+
+  def run_metaconfigs
+    eval_file_ifexist "#{@ardir}/metaconfig"
+    @packages.each do |name|
+      eval_file_ifexist "#{@ardir}/packages/#{name}/metaconfig"
+    end
+  end
+
+  def init_installers
+    @installers = {}
+    @packages.each do |pack|
+      @installers[pack] = Installer.new(@config, @options,
+                                       "#{@ardir}/packages/#{pack}",
+                                       "packages/#{pack}")
+    end
+
+    with    = extract_selection(config('with'))
+    without = extract_selection(config('without'))
+    @selected = @installers.keys.select {|name|
+                  (with.empty? or with.include?(name)) \
+                      and not without.include?(name)
+                }
+  end
+
+  def extract_selection(list)
+    a = list.split(/,/)
+    a.each do |name|
+      setup_rb_error "no such package: #{name}"  unless @installers.key?(name)
+    end
+    a
+  end
+
+  def print_usage(f)
+    super
+    f.puts 'Inluded packages:'
+    f.puts '  ' + @packages.sort.join(' ')
+    f.puts
+  end
+
+  #
+  # multi-package metaconfig API
+  #
+
+  attr_reader :packages
+
+  def declare_packages(list)
+    raise 'package list is empty' if list.empty?
+    list.each do |name|
+      raise "directory packages/#{name} does not exist"\
+              unless File.dir?("#{@ardir}/packages/#{name}")
+    end
+    @packages = list
+  end
+
+  #
+  # Task Handlers
+  #
+
+  def exec_config
+    run_hook 'pre-config'
+    each_selected_installers {|inst| inst.exec_config }
+    run_hook 'post-config'
+    @config.save   # must be final
+  end
+
+  def exec_setup
+    run_hook 'pre-setup'
+    each_selected_installers {|inst| inst.exec_setup }
+    run_hook 'post-setup'
+  end
+
+  def exec_install
+    run_hook 'pre-install'
+    each_selected_installers {|inst| inst.exec_install }
+    run_hook 'post-install'
+  end
+
+  def exec_clean
+    rm_f ConfigTable.savefile
+    run_hook 'pre-clean'
+    each_selected_installers {|inst| inst.exec_clean }
+    run_hook 'post-clean'
+  end
+
+  def exec_distclean
+    rm_f ConfigTable.savefile
+    run_hook 'pre-distclean'
+    each_selected_installers {|inst| inst.exec_distclean }
+    run_hook 'post-distclean'
+  end
+
+  #
+  # lib
+  #
+
+  def each_selected_installers
+    Dir.mkdir 'packages' unless File.dir?('packages')
+    @selected.each do |pack|
+      $stderr.puts "Processing the package `#{pack}' ..." if @options['verbose']
+      Dir.mkdir "packages/#{pack}" unless File.dir?("packages/#{pack}")
+      Dir.chdir "packages/#{pack}"
+      yield @installers[pack]
+      Dir.chdir '../..'
+    end
+  end
+
+  def verbose?
+    @options['verbose']
+  end
+
+  def no_harm?
+    @options['no-harm']
+  end
+
+end
+
+
+class Installer
+
+  FILETYPES = %w( bin lib ext data )
+
+  include HookScriptAPI
+  include HookUtils
+  include FileOperations
+
+  def initialize(config, opt, srcroot, objroot)
+    @config = config
+    @options = opt
+    @srcdir = File.expand_path(srcroot)
+    @objdir = File.expand_path(objroot)
+    @currdir = '.'
+  end
+
+  def inspect
+    "#<#{self.class} #{File.basename(@srcdir)}>"
+  end
+
+  #
+  # Hook Script API base methods
+  #
+
+  def srcdir_root
+    @srcdir
+  end
+
+  def objdir_root
+    @objdir
+  end
+
+  def relpath
+    @currdir
+  end
+
+  #
+  # configs/options
+  #
+
+  def no_harm?
+    @options['no-harm']
+  end
+
+  def verbose?
+    @options['verbose']
+  end
+
+  def verbose_off
+    begin
+      save, @options['verbose'] = @options['verbose'], false
+      yield
+    ensure
+      @options['verbose'] = save
+    end
+  end
+
+  #
+  # TASK config
+  #
+
+  def exec_config
+    exec_task_traverse 'config'
+  end
+
+  def config_dir_bin(rel)
+  end
+
+  def config_dir_lib(rel)
+  end
+
+  def config_dir_ext(rel)
+    extconf if extdir?(curr_srcdir())
+  end
+
+  def extconf
+    opt = @options['config-opt'].join(' ')
+    command "#{config('rubyprog')} #{curr_srcdir()}/extconf.rb #{opt}"
+  end
+
+  def config_dir_data(rel)
+  end
+
+  #
+  # TASK setup
+  #
+
+  def exec_setup
+    exec_task_traverse 'setup'
+  end
+
+  def setup_dir_bin(rel)
+    all_files_in(curr_srcdir()).each do |fname|
+      adjust_shebang "#{curr_srcdir()}/#{fname}"
+    end
+  end
+
+  def adjust_shebang(path)
+    return if no_harm?
+    tmpfile = File.basename(path) + '.tmp'
+    begin
+      File.open(path, 'rb') {|r|
+        first = r.gets
+        return unless File.basename(config('rubypath')) == 'ruby'
+        return unless File.basename(first.sub(/\A\#!/, '').split[0]) == 'ruby'
+        $stderr.puts "adjusting shebang: #{File.basename(path)}" if verbose?
+        File.open(tmpfile, 'wb') {|w|
+          w.print first.sub(/\A\#!\s*\S+/, '#! ' + config('rubypath'))
+          w.write r.read
+        }
+        move_file tmpfile, File.basename(path)
+      }
+    ensure
+      File.unlink tmpfile if File.exist?(tmpfile)
+    end
+  end
+
+  def setup_dir_lib(rel)
+  end
+
+  def setup_dir_ext(rel)
+    make if extdir?(curr_srcdir())
+  end
+
+  def setup_dir_data(rel)
+  end
+
+  #
+  # TASK install
+  #
+
+  def exec_install
+    rm_f 'InstalledFiles'
+    exec_task_traverse 'install'
+  end
+
+  def install_dir_bin(rel)
+    install_files collect_filenames_auto(), "#{config('bindir')}/#{rel}", 0755
+  end
+
+  def install_dir_lib(rel)
+    install_files ruby_scripts(), "#{config('rbdir')}/#{rel}", 0644
+  end
+
+  def install_dir_ext(rel)
+    return unless extdir?(curr_srcdir())
+    install_files ruby_extentions('.'),
+                  "#{config('sodir')}/#{File.dirname(rel)}",
+                  0555
+  end
+
+  def install_dir_data(rel)
+    install_files collect_filenames_auto(), "#{config('datadir')}/#{rel}", 0644
+  end
+
+  def install_files(list, dest, mode)
+    mkdir_p dest, @options['install-prefix']
+    list.each do |fname|
+      install fname, dest, mode, @options['install-prefix']
+    end
+  end
+
+  def ruby_scripts
+    collect_filenames_auto().select {|n| /\.rb\z/ =~ n }
+  end
+  
+  # picked up many entries from cvs-1.11.1/src/ignore.c
+  reject_patterns = %w( 
+    core RCSLOG tags TAGS .make.state
+    .nse_depinfo #* .#* cvslog.* ,* .del-* *.olb
+    *~ *.old *.bak *.BAK *.orig *.rej _$* *$
+
+    *.org *.in .*
+  )
+  mapping = {
+    '.' => '\.',
+    '$' => '\$',
+    '#' => '\#',
+    '*' => '.*'
+  }
+  REJECT_PATTERNS = Regexp.new('\A(?:' +
+                               reject_patterns.map {|pat|
+                                 pat.gsub(/[\.\$\#\*]/) {|ch| mapping[ch] }
+                               }.join('|') +
+                               ')\z')
+
+  def collect_filenames_auto
+    mapdir((existfiles() - hookfiles()).reject {|fname|
+             REJECT_PATTERNS =~ fname
+           })
+  end
+
+  def existfiles
+    all_files_in(curr_srcdir()) | all_files_in('.')
+  end
+
+  def hookfiles
+    %w( pre-%s post-%s pre-%s.rb post-%s.rb ).map {|fmt|
+      %w( config setup install clean ).map {|t| sprintf(fmt, t) }
+    }.flatten
+  end
+
+  def mapdir(filelist)
+    filelist.map {|fname|
+      if File.exist?(fname)   # objdir
+        fname
+      else                    # srcdir
+        File.join(curr_srcdir(), fname)
+      end
+    }
+  end
+
+  def ruby_extentions(dir)
+    Dir.open(dir) {|d|
+      ents = d.select {|fname| /\.#{::Config::CONFIG['DLEXT']}\z/ =~ fname }
+      if ents.empty?
+        setup_rb_error "no ruby extention exists: 'ruby #{$0} setup' first"
+      end
+      return ents
+    }
+  end
+
+  #
+  # TASK clean
+  #
+
+  def exec_clean
+    exec_task_traverse 'clean'
+    rm_f ConfigTable.savefile
+    rm_f 'InstalledFiles'
+  end
+
+  def clean_dir_bin(rel)
+  end
+
+  def clean_dir_lib(rel)
+  end
+
+  def clean_dir_ext(rel)
+    return unless extdir?(curr_srcdir())
+    make 'clean' if File.file?('Makefile')
+  end
+
+  def clean_dir_data(rel)
+  end
+
+  #
+  # TASK distclean
+  #
+
+  def exec_distclean
+    exec_task_traverse 'distclean'
+    rm_f ConfigTable.savefile
+    rm_f 'InstalledFiles'
+  end
+
+  def distclean_dir_bin(rel)
+  end
+
+  def distclean_dir_lib(rel)
+  end
+
+  def distclean_dir_ext(rel)
+    return unless extdir?(curr_srcdir())
+    make 'distclean' if File.file?('Makefile')
+  end
+
+  #
+  # lib
+  #
+
+  def exec_task_traverse(task)
+    run_hook "pre-#{task}"
+    FILETYPES.each do |type|
+      if config('without-ext') == 'yes' and type == 'ext'
+        $stderr.puts 'skipping ext/* by user option' if verbose?
+        next
+      end
+      traverse task, type, "#{task}_dir_#{type}"
+    end
+    run_hook "post-#{task}"
+  end
+
+  def traverse(task, rel, mid)
+    dive_into(rel) {
+      run_hook "pre-#{task}"
+      __send__ mid, rel.sub(%r[\A.*?(?:/|\z)], '')
+      all_dirs_in(curr_srcdir()).each do |d|
+        traverse task, "#{rel}/#{d}", mid
+      end
+      run_hook "post-#{task}"
+    }
+  end
+
+  def dive_into(rel)
+    return unless File.dir?("#{@srcdir}/#{rel}")
+
+    dir = File.basename(rel)
+    Dir.mkdir dir unless File.dir?(dir)
+    prevdir = Dir.pwd
+    Dir.chdir dir
+    $stderr.puts '---> ' + rel if verbose?
+    @currdir = rel
+    yield
+    Dir.chdir prevdir
+    $stderr.puts '<--- ' + rel if verbose?
+    @currdir = File.dirname(rel)
+  end
+
+end
+
+
+if $0 == __FILE__
+  begin
+    if multipackage_install?
+      ToplevelInstallerMulti.invoke
+    else
+      ToplevelInstaller.invoke
+    end
+  rescue SetupError
+    raise if $DEBUG
+    $stderr.puts $!.message
+    $stderr.puts "Try 'ruby #{$0} --help' for detailed usage."
+    exit 1
+  end
+end