Initial revision

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@1418 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/shell/builtin-command.rb

@@ -0,0 +1,154 @@
+#
+#   shell/builtin-command.rb - 
+#   	$Release Version: 0.6.0 $
+#   	$Revision$
+#   	$Date$
+#   	by Keiju ISHITSUKA(Nihon Rational Software Co.,Ltd)
+#
+# --
+#
+#   
+#
+
+require "shell/filter"
+
+class Shell
+  class BuiltInCommand<Filter
+    def wait?
+      false
+    end
+    def active?
+      true
+    end
+  end
+
+  class Echo < BuiltInCommand
+    def initialize(sh, *strings)
+      super sh
+      @strings = strings
+    end
+    
+    def each(rs = nil)
+      rs =  @shell.record_separator unless rs
+      for str  in @strings
+	yield str + rs
+      end
+    end
+  end
+
+  class Cat < BuiltInCommand
+    def initialize(sh, *filenames)
+      super sh
+      @cat_files = filenames
+    end
+
+    def each(rs = nil)
+      if @cat_files.empty?
+	super
+      else
+	for src in @cat_files
+	  @shell.foreach(src, rs){|l| yield l}
+	end
+      end
+    end
+  end
+
+  class Glob < BuiltInCommand
+    def initialize(sh, pattern)
+      super sh
+
+      @pattern = pattern
+      Thread.critical = true
+      back = Dir.pwd
+      begin
+	Dir.chdir @shell.cwd
+	@files = Dir[pattern]
+      ensure
+	Dir.chdir back
+	Thread.critical = false
+      end
+    end
+
+    def each(rs = nil)
+      rs =  @shell.record_separator unless rs
+      for f  in @files
+	yield f+rs
+      end
+    end
+  end
+
+#   class Sort < Cat
+#     def initialize(sh, *filenames)
+#       super
+#     end
+#
+#     def each(rs = nil)
+#       ary = []
+#       super{|l|	ary.push l}
+#       for l in ary.sort!
+# 	yield l
+#       end
+#     end
+#   end
+
+  class AppendIO < BuiltInCommand
+    def initialize(sh, io, filter)
+      super sh
+      @input = filter
+      @io = io
+    end
+
+    def input=(filter)
+      @input.input=filter
+      for l in @input
+	@io << l
+      end
+    end
+
+  end
+
+  class AppendFile < AppendIO
+    def initialize(sh, to_filename, filter)
+      @file_name = to_filename
+      io = sh.open(to_filename, "a")
+      super(sh, io, filter)
+    end
+
+    def input=(filter)
+      begin
+	super
+      ensure
+	@io.close
+      end
+    end
+  end
+
+  class Tee < BuiltInCommand
+    def initialize(sh, filename)
+      super sh
+      @to_filename = filename
+    end
+
+    def each(rs = nil)
+      to = @shell.open(@to_filename, "w")
+      begin
+	super{|l| to << l; yield l}
+      ensure
+	to.close
+      end
+    end
+  end
+
+  class Concat < BuiltInCommand
+    def initialize(sh, *jobs)
+      super(sh)
+      @jobs = jobs
+    end
+
+    def each(rs = nil)
+      while job = @jobs.shift
+	job.each{|l| yield l}
+      end
+    end
+  end
+end