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Edit File : builtin-command.rb \| Size : 2.63 KB
# # shell/builtin-command.rb - # $Release Version: 0.7 $ # $Revision: 31641 $ # 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 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 Back

Edit File : builtin-command.rb | Size : 2.63 KB

#
#   shell/builtin-command.rb -
#       $Release Version: 0.7 $
#       $Revision: 31641 $
#       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 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

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