Class: StringLineHexdumper

Inherits:
Object show all
Defined in:
lib/javaclass/string_hexdump.rb

Overview

Dump a line of text as hex dump.

Author

Peter Kofler

Constant Summary collapse

NIBBLE_SIZE =

Each displayed number is 2 nibbles, i.e. it’s a byte.

2
NIBBLE_FORMAT_STR = 
"%#{NIBBLE_SIZE}.#{NIBBLE_SIZE}X "
NIBBLE_WHITE_SPACE = 
' ' * (NIBBLE_SIZE + 1)

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(address, columns, data) ⇒ StringLineHexdumper

Returns a new instance of StringLineHexdumper.



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# File 'lib/javaclass/string_hexdump.rb', line 37

def initialize(address, columns, data)
  @address = address
  @maxlen = columns
  @data = data
end

Class Method Details

.empty(columns) ⇒ Object

Factory method to create a formatter for an empty line with columns length.



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# File 'lib/javaclass/string_hexdump.rb', line 33

def self.empty(columns)
  StringLineHexdumper.new(0, columns, '')
end

Instance Method Details

#format ⇒ Object 



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# File 'lib/javaclass/string_hexdump.rb', line 43

def format
  address = format_address
  hexbytes = format_bytes
  space = add_whitespace
  display = strip_non_printable
  
  "#{address}: #{hexbytes.join}#{space}; #{display}\n"
end