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//opt/alt/ruby22/lib64/ruby/2.2.0/shell/builtin-command.rb

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#
#   shell/builtin-command.rb -
#       $Release Version: 0.7 $
#       $Revision: 47246 $
#       by Keiju ISHITSUKA(keiju@ruby-lang.org)
#
# --
#
#
#

require "shell/filter"

class Shell
  class BuiltInCommand<Filter
    def wait?
      false
    end
    def active?
      true
    end
  end

class Void < BuiltInCommand
    def initialize(sh, *opts)
      super sh
    end

def each(rs = nil)
      # do nothing
    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
    end

def each(rs = nil)
      if @pattern[0] == ?/
        @files = Dir[@pattern]
      else
        prefix = @shell.pwd+"/"
        @files = Dir[prefix+@pattern].collect{|p| p.sub(prefix, "")}
      end
      rs =  @shell.record_separator unless rs
      for f in @files
        yield f+rs
      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

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Name	Size	Perms	Modified	Actions
builtin-command.rb	2.40 KB	lrw-r--r--	2014-08-22 03:32:36	Edit Download recursive recursive
command-processor.rb	18.54 KB	lrw-r--r--	2014-08-22 03:32:36	Edit Download recursive recursive
error.rb	573 B	lrw-r--r--	2011-05-19 00:07:25	Edit Download recursive recursive
filter.rb	2.56 KB	lrw-r--r--	2013-12-15 02:09:41	Edit Download recursive recursive
process-controller.rb	7.46 KB	lrw-r--r--	2014-08-26 02:44:26	Edit Download recursive recursive
system-command.rb	3.56 KB	lrw-r--r--	2014-07-26 17:44:07	Edit Download recursive recursive
version.rb	255 B	lrw-r--r--	2012-12-05 02:55:07	Edit Download recursive recursive

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