Fixed sonarqube findings
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193
src/main/java/com/mattrixwv/cipherstream/combination/ADFGX.java
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193
src/main/java/com/mattrixwv/cipherstream/combination/ADFGX.java
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//CipherStreamJava/src/main/java/com/mattrixwv/CipherStreamJava/combination/ADFGX.java
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//Mattrixwv
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// Created: 01-25-22
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//Modified: 07-03-22
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package com.mattrixwv.cipherstream.combination;
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import com.mattrixwv.cipherstream.exceptions.InvalidCharacterException;
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import com.mattrixwv.cipherstream.exceptions.InvalidInputException;
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import com.mattrixwv.cipherstream.exceptions.InvalidKeywordException;
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import com.mattrixwv.cipherstream.polysubstitution.Columnar;
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import com.mattrixwv.cipherstream.polysubstitution.PolybiusSquare;
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public class ADFGX{
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private String inputString; //This is the string that needs encoded/decoded
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private String outputString; //This is the string that is output after encoding/decoding
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private String squareKeyword; //The keyword used to create the Polybius Square
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private String keyword; //The keyword used to create the Columnar cipher
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private boolean preserveCapitals; //Whether to respect capitals in the output string
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private boolean preserveWhitespace; //Whether to respect whitespace in the output string
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private boolean preserveSymbols; //Whether to respect symbols in the output string
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private PolybiusSquare polybiusSquare; //The first step in encoding
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private Columnar columnar; //The second step in encoding
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//Ensures Polybius keyword constraints
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private void setSquareKeyword(String squareKeyword) throws InvalidKeywordException{
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if(squareKeyword == null){
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throw new InvalidKeywordException("Square Keyword cannot be null");
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}
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this.squareKeyword = squareKeyword;
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}
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//Ensures Columnar keyword constraints
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private void setKeyword(String keyword) throws InvalidKeywordException{
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if(keyword == null){
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throw new InvalidKeywordException("Keyword cannot be null");
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}
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this.keyword = keyword;
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}
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//Ensures inputString constraints
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private void setInputString(String inputString) throws InvalidInputException{
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if(inputString == null){
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throw new InvalidInputException("Input cannot be null");
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}
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if(!preserveCapitals){
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inputString = inputString.toUpperCase();
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}
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if(!preserveWhitespace){
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inputString = inputString.replaceAll("\\s", "");
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}
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if(!preserveSymbols){
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inputString = inputString.replaceAll("[^a-zA-Z\\s]", "");
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}
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this.inputString = inputString;
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if(this.inputString.isBlank()){
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throw new InvalidInputException("Input cannot be blank");
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}
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}
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//Format the output string with capitals, symbols, and numbers that are in the input string
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private void formatOutputStringEncode(){
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StringBuilder output = new StringBuilder();
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int outputLocation = 0;
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for(char ch : inputString.toCharArray()){
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if(Character.isUpperCase(ch)){
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output.append(Character.toUpperCase(outputString.charAt(outputLocation++)));
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output.append(Character.toUpperCase(outputString.charAt(outputLocation++)));
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}
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else if(Character.isLowerCase(ch)){
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output.append(Character.toLowerCase(outputString.charAt(outputLocation++)));
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output.append(Character.toLowerCase(outputString.charAt(outputLocation++)));
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}
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else{
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output.append(ch);
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}
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}
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outputString = output.toString();
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}
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private void formatOutputStringDecode(){
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StringBuilder output = new StringBuilder();
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int outputLocation = 0;
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for(int inputLocation = 0;inputLocation < inputString.length();++inputLocation){
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char ch = inputString.charAt(inputLocation);
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if(Character.isUpperCase(ch)){
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output.append(Character.toUpperCase(outputString.charAt(outputLocation++)));
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++inputLocation;
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}
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else if(Character.isLowerCase(ch)){
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output.append(Character.toLowerCase(outputString.charAt(outputLocation++)));
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++inputLocation;
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}
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else{
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output.append(ch);
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}
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}
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outputString = output.toString();
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}
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//Encodes the inputString and stores the result in outputString
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private void encode() throws InvalidCharacterException, InvalidInputException, InvalidKeywordException{
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//Encode the input with polybius
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String polybiusOutput = polybiusSquare.encode(squareKeyword, inputString);
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squareKeyword = polybiusSquare.getKeyword();
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//Change polybius to use the correct symbols
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polybiusOutput = polybiusOutput.replace("1", "A").replace("2", "D").replace("3", "F").replace("4", "G").replace("5", "X");
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//Encode polybius's output with columnar
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String columnarOutput = columnar.encode(keyword, polybiusOutput);
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keyword = columnar.getKeyword();
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outputString = columnarOutput;
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//Add whatever is needed to the output string
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formatOutputStringEncode();
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}
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//Decodes the inputString and stores the result in outputString
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private void decode() throws InvalidKeywordException, InvalidCharacterException, InvalidInputException{
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//Decode the input with columnar
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String columnarOutput = columnar.decode(keyword, inputString);
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keyword = columnar.getKeyword();
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//Change the symbols to the correct ones for polybius
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columnarOutput = columnarOutput.replace("A", "1").replace("D", "2").replace("F", "3").replace("G", "4").replace("X", "5");
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//Decode with polybius
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String polybiusOutput = polybiusSquare.decode(squareKeyword, columnarOutput);
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squareKeyword = polybiusSquare.getKeyword();
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outputString = polybiusOutput;
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//Add whatever is needed to the output string
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formatOutputStringDecode();
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}
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//Constructor
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public ADFGX() throws InvalidCharacterException{
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preserveCapitals = false;
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preserveWhitespace = false;
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preserveSymbols = false;
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reset();
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}
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public ADFGX(boolean preserveCapitals, boolean preserveWhitespace, boolean preserveSymbols) throws InvalidCharacterException{
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this.preserveCapitals = preserveCapitals;
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this.preserveWhitespace = preserveWhitespace;
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this.preserveSymbols = preserveSymbols;
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reset();
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}
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//Encodes inputString using keyword and returns the result
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public String encode(String squareKeyword, String keyword, String inputString) throws InvalidKeywordException, InvalidInputException, InvalidCharacterException{
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setSquareKeyword(squareKeyword);
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setKeyword(keyword);
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setInputString(inputString);
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encode();
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return outputString;
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}
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//Decodes inputString using keyword and returns the result
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public String decode(String squareKeyword, String keyword, String inputString) throws InvalidKeywordException, InvalidInputException, InvalidCharacterException{
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setSquareKeyword(squareKeyword);
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setKeyword(keyword);
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setInputString(inputString);
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decode();
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return outputString;
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}
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//Returns the cleaned inputString
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public String getInputString(){
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return inputString;
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}
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//Returns the outputString
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public String getOutputString(){
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return outputString;
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}
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//Returns the cleaned Polybius Square keyword
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public String getSquareKeyword(){
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return squareKeyword;
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}
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//Returns the cleaned Columnar keyword
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public String getKeyword(){
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return keyword;
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}
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//Makes sure all of the variables are empty
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public void reset() throws InvalidCharacterException{
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polybiusSquare = new PolybiusSquare(false, false);
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columnar = new Columnar(false, false, false, true, 'B');
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inputString = "";
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outputString = "";
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squareKeyword = "";
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keyword = "";
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}
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}
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