Class: Rbkb::Cli::Unhexify

Inherits:
Executable show all
Defined in:
lib/rbkb/cli/unhexify.rb

Overview

Copyright 2009 emonti at matasano.com See README.rdoc for license information

unhexify converts a string of hex bytes back to raw data. Input can be supplied via stdin, a hex-string argument, or a file containing hex (use -f).

Instance Attribute Summary

Attributes inherited from Executable

#argv, #exit_status, #oparse, #opts, #stderr, #stdin, #stdout

Instance Method Summary collapse

Methods inherited from Executable

#bail, #bail_args, #exit, #initialize, run

Constructor Details

This class inherits a constructor from Rbkb::Cli::Executable

Instance Method Details

#go(*args) ⇒ Object 



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# File 'lib/rbkb/cli/unhexify.rb', line 36

def go(*args)
  super(*args)

  # Default to standard input
  @opts[:indat] ||= @stdin.read() 

  @opts[:indat].delete!("\r\n")
  @opts[:delim] ||= Regexp.new('\s*')

  @stdout << @opts[:indat].unhexify(@opts[:delim])

  self.exit(0)
end

#make_parser ⇒ Object 



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# File 'lib/rbkb/cli/unhexify.rb', line 9

def make_parser
  super()
  add_std_file_opt(:indat)
  arg = @oparse

  #----------------------------------------------------------------------
  # Add local options
  arg.banner += " <data | blank for stdin>"

  arg.on("-d", "--delim DELIMITER", 
         "DELIMITER regex between hex chunks") do |d|
      @opts[:delim] = Regexp.new(d.gsub('\\\\', '\\'))
  end
end

#parse(*args) ⇒ Object 



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# File 'lib/rbkb/cli/unhexify.rb', line 24

def parse(*args)
  super(*args)

  # default string arg
  if @opts[:indat].nil? and a=@argv.shift
    @opts[:indat] = a.dup 
  end

  # catchall
  bail_args @argv.join(' ') if ARGV.length != 0 
end