Class CodebookValidator

java.lang.Object
  TwoColumnValidator
      CodebookValidator

All Implemented Interfaces:

Validator

public class CodebookValidator
extends TwoColumnValidator

Validator for parsing symbol-code pairs. Returns LinkedHashMap<String,String> representing codebook. Entries should be given one per line using format as:

    a 01
    b 00
    e 1
 

Blank lines are ignored. Lines with only a frequency are presumed to have string " " as the symbol. Dialog ensures that symbols are unique and codes are prefix-free. Note that symbols can be any distinct strings (not just characters).

Constructor Summary

CodebookValidator()

Method Summary

LinkedHashMap<String,String>

parse(String original) Parses symbol-codeword data.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CodebookValidator

public CodebookValidator()

Method Detail

parse

public LinkedHashMap<String,String> parse(String original)
                                   throws ValidatorException

Parses symbol-codeword data. Assumes format described in class overview.

Specified by:

parse in interface Validator

Overrides:

parse in class TwoColumnValidator

Parameters:

original - String

Returns:

LinkedHashMap<String,String> describing codewords for each symbol

Throws:

ValidatorException - if codewords not 0/1 strings, if codebook is not prefix-free, or if any error conditions detected through TwoColumnValidator.parse(String)