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#
#   output-method.rb - output methods used by irb
#   	$Release Version: 0.9.6$
#   	$Revision: 38604 $
#   	by Keiju ISHITSUKA(keiju@ruby-lang.org)
#
# --
#
#
#

require "e2mmap"

module IRB
  # An abstract output class for IO in irb. This is mainly used internally by
  # IRB::Notifier. You can define your own output method to use with Irb.new,
  # or Context.new
  class OutputMethod
    extend Exception2MessageMapper
    def_exception :NotImplementedError, "Need to define `%s'"


    # Open this method to implement your own output method, raises a
    # NotImplementedError if you don't define #print in your own class.
    def print(*opts)
      OutputMethod.Raise NotImplementedError, "print"
    end

    # Prints the given +opts+, with a newline delimiter.
    def printn(*opts)
      print opts.join(" "), "\n"
    end

    # Extends IO#printf to format the given +opts+ for Kernel#sprintf using
    # #parse_printf_format
    def printf(format, *opts)
      if /(%*)%I/ =~ format
	format, opts = parse_printf_format(format, opts)
      end
      print sprintf(format, *opts)
    end

    # Returns an array of the given +format+ and +opts+ to be used by
    # Kernel#sprintf, if there was a successful Regexp match in the given
    # +format+ from #printf
    #
    #     %
    #     <flag>  [#0- +]
    #     <minimum field width> (\*|\*[1-9][0-9]*\$|[1-9][0-9]*)
    #     <precision>.(\*|\*[1-9][0-9]*\$|[1-9][0-9]*|)?
    #     #<length modifier>(hh|h|l|ll|L|q|j|z|t)
    #     <conversion specifier>[diouxXeEfgGcsb%]
    def parse_printf_format(format, opts)
      return format, opts if $1.size % 2 == 1
    end

    # Calls #print on each element in the given +objs+, followed by a newline
    # character.
    def puts(*objs)
      for obj in objs
	print(*obj)
	print "\n"
      end
    end

    # Prints the given +objs+ calling Object#inspect on each.
    #
    # See #puts for more detail.
    def pp(*objs)
      puts(*objs.collect{|obj| obj.inspect})
    end

    # Prints the given +objs+ calling Object#inspect on each and appending the
    # given +prefix+.
    #
    # See #puts for more detail.
    def ppx(prefix, *objs)
      puts(*objs.collect{|obj| prefix+obj.inspect})
    end

  end

  # A standard output printer
  class StdioOutputMethod<OutputMethod
    # Prints the given +opts+ to standard output, see IO#print for more
    # information.
    def print(*opts)
      STDOUT.print(*opts)
    end
  end
end

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DIR : / usr/ share/ ruby/ irb/
Name Type Size Permission Actions
cmd Folder 0755
ext Folder 0755
lc Folder 0755
completion.rb File 6.12 KB 0644
context.rb File 11.91 KB 0644
extend-command.rb File 9.54 KB 0644
frame.rb File 1.87 KB 0644
help.rb File 613 B 0644
init.rb File 7.07 KB 0644
input-method.rb File 4.58 KB 0644
inspector.rb File 3.9 KB 0644
locale.rb File 4.43 KB 0644
magic-file.rb File 893 B 0644
notifier.rb File 6.87 KB 0644
output-method.rb File 2.39 KB 0644
ruby-lex.rb File 22.59 KB 0644
ruby-token.rb File 7.3 KB 0644
slex.rb File 5.95 KB 0644
src_encoding.rb File 90 B 0644
version.rb File 251 B 0644
workspace.rb File 2.78 KB 0644
ws-for-case-2.rb File 195 B 0644
xmp.rb File 4.03 KB 0644