From 4578a096d1b12ad7c4d988ceaee461c4a7850a89 Mon Sep 17 00:00:00 2001
From: knu <knu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Thu, 17 May 2001 10:12:10 +0000
Subject: [PATCH] Yay, shell.rb is back!

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@1423 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 lib/shell.rb | 273 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 273 insertions(+)
 create mode 100644 lib/shell.rb

diff --git a/lib/shell.rb b/lib/shell.rb
new file mode 100644
index 0000000000..5babc4175b
--- /dev/null
+++ b/lib/shell.rb
@@ -0,0 +1,273 @@
+#
+#   shell.rb - 
+#   	$Release Version: 0.6.0 $
+#   	$Revision: 1.8 $
+#   	$Date: 2001/03/19 09:01:11 $
+#   	by Keiju ISHITSUKA(Nippon Rational Inc.)
+#
+# --
+#
+#   
+#
+
+require "e2mmap"
+require "thread"
+
+require "shell/error"
+require "shell/command-processor"
+require "shell/process-controller"
+
+class Shell
+  @RCS_ID='-$Id: shell.rb,v 1.8 2001/03/19 09:01:11 keiju Exp keiju $-'
+
+  include Error
+  extend Exception2MessageMapper
+
+#  @cascade = true
+  # debug: true -> normal debug
+  # debug: 1    -> eval definition debug
+  # debug: 2    -> detail inspect debug
+  @debug = false
+  @verbose = true
+
+  class << Shell
+    attr :cascade, true
+    attr :debug, true
+    attr :verbose, true
+
+#    alias cascade? cascade
+    alias debug? debug
+    alias verbose? verbose
+    @verbose = true
+
+    def debug=(val)
+      @debug = val
+      @verbose = val if val
+    end
+
+    def cd(path)
+      sh = new
+      sh.cd path
+      sh
+    end
+
+    def default_system_path
+      if @default_system_path
+	@default_system_path
+      else
+	ENV["PATH"].split(":")
+      end
+    end
+
+    def default_system_path=(path)
+      @default_system_path = path
+    end
+
+    def default_record_separator
+      if @default_record_separator
+	@default_record_separator
+      else
+	$/
+      end
+    end
+
+    def default_record_separator=(rs)
+      @default_record_separator = rs
+    end
+  end
+
+  def initialize
+    @cwd = Dir.pwd
+    @dir_stack = []
+    @umask = nil
+
+    @system_path = Shell.default_system_path
+    @record_separator = Shell.default_record_separator
+
+    @command_processor = CommandProcessor.new(self)
+    @process_controller = ProcessController.new(self)
+
+    @verbose = Shell.verbose
+    @debug = Shell.debug
+  end
+
+  attr_reader :system_path
+
+  def system_path=(path)
+    @system_path = path
+    rehash
+  end
+
+  attr :umask, true
+  attr :record_separator, true
+
+  attr :verbose, true
+  attr :debug, true
+
+  def debug=(val)
+    @debug = val
+    @verbose = val if val
+  end
+
+  alias verbose? verbose
+  alias debug? debug
+
+  attr_reader :command_processor
+  attr_reader :process_controller
+
+  def expand_path(path)
+    if /^\// =~ path
+      File.expand_path(path)
+    else
+      File.expand_path(File.join(@cwd, path))
+    end
+  end
+
+  # ほとんどのShell Command は CommandProcessor により定義される.
+
+  #
+  # Dir関連メソッド
+  #
+  # Shell#cwd/dir/getwd/pwd
+  # Shell#chdir/cd
+  # Shell#pushdir/pushd
+  # Shell#popdir/popd
+  # Shell#mkdir
+  # Shell#rmdir
+
+  attr :cwd
+  alias dir cwd
+  alias getwd cwd
+  alias pwd cwd
+
+  attr :dir_stack
+  alias dirs dir_stack
+
+  # イテレータとして呼ばれると一時的にcdすることになる.
+  def chdir(path = nil)
+    if iterator?
+      cwd_old = @cwd
+      begin
+	chdir(path)
+	yield
+      ensure
+	chdir(cwd_old)
+      end
+    else
+      path = "~" unless path
+      @cwd = expand_path(path)
+      notify "current dir: #{@cwd}"
+      rehash
+      self
+    end
+  end
+  alias cd chdir
+
+  def pushdir(path = nil)
+    if iterator?
+      pushdir(path)
+      begin
+	yield
+      ensure
+	popdir
+      end
+    elsif path
+      @dir_stack.push @cwd
+      chdir path
+      notify "dir stack: [#{@dir_stack.join ', '}]"
+      self
+    else
+      if pop = @dir_stack.pop
+	@dir_stack.push @cwd
+	chdir pop
+	notify "dir stack: [#{@dir_stack.join ', '}]"
+	self
+      else
+	Shell.Fail DirStackEmpty
+      end
+    end
+  end
+  alias pushd pushdir
+
+  def popdir
+    if pop = @dir_stack.pop
+      chdir pop
+      notify "dir stack: [#{@dir_stack.join ', '}]"
+      self
+    else
+      Shell.Fail DirStackEmpty
+    end
+  end
+  alias popd popdir
+
+
+  #
+  # process 管理
+  #
+  def jobs
+    @process_controller.jobs
+  end
+
+  def kill(sig, command)
+    @process_controller.kill_job(sig, command)
+  end
+
+  #
+  # command 定義
+  #
+  def Shell.def_system_command(command, path = command)
+    CommandProcessor.def_system_command(command, path)
+  end
+
+  def Shell.undef_system_command(command)
+    CommandProcessor.undef_system_command(command)
+  end
+
+  def Shell.alias_command(ali, command, *opts, &block)
+    CommandProcessor.alias_command(ali, command, *opts, &block)
+  end
+
+  def Shell.unalias_command(ali)
+    CommandProcessor.unalias_command(ali)
+  end
+
+  def Shell.install_system_commands(pre = "sys_")
+    CommandProcessor.install_system_commands(pre)
+  end
+
+  #
+  def inspect
+    if debug.kind_of?(Integer) && debug > 2
+      super
+    else
+      to_s
+    end
+  end
+
+  def self.notify(*opts, &block)
+    Thread.exclusive do
+    if opts[-1].kind_of?(String)
+      yorn = verbose?
+    else
+      yorn = opts.pop
+    end
+    return unless yorn
+
+    _head = true
+    print *opts.collect{|mes|
+      mes = mes.dup
+      yield mes if iterator?
+      if _head
+	_head = false
+	"shell: " + mes
+      else
+	"       " + mes
+      end
+    }.join("\n")+"\n"
+    end
+  end
+
+  CommandProcessor.initialize
+  CommandProcessor.run_config
+end
+