Class LZString

src/main/java/com/volmit/adapt/util/LZString.java:23–556

import java.util.*;

public class LZString {

    private static final char[] keyStrBase64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=".toCharArray();
    private static final char[] keyStrUriSafe = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+-$".toCharArray();
    private static final Map<char[], Map<Character, Integer>> baseReverseDic = new HashMap<char[], Map<Character, Integer>>();

    private static char getBaseValue(char[] alphabet, Character character) {
        Map<Character, Integer> map = baseReverseDic.get(alphabet);
        if (map == null) {
            map = new HashMap<Character, Integer>();
            baseReverseDic.put(alphabet, map);
            for (int i = 0; i < alphabet.length; i++) {
                map.put(alphabet[i], i);
            }
        }
        return (char) map.get(character).intValue();
    }

    public static String compressToBase64(String input) {
        if (input == null)
            return "";
        String res = LZString._compress(input, 6, new CompressFunctionWrapper() {
            @Override
            public char doFunc(int a) {
                return keyStrBase64[a];
            }
        });
        switch (res.length() % 4) { // To produce valid Base64
            default: // When could this happen ?
            case 0:
                return res;
            case 1:
                return res + "===";
            case 2:
                return res + "==";
            case 3:
                return res + "=";
        }
    }

    public static String decompressFromBase64(final String inputStr) {
        if (inputStr == null)
            return "";
        if (inputStr.equals(""))
            return null;
        return LZString._decompress(inputStr.length(), 32, new DecompressFunctionWrapper() {
            @Override
            public char doFunc(int index) {
                return getBaseValue(keyStrBase64, inputStr.charAt(index));
            }
        });
    }

    public static String compressToUTF16(String input) {
        if (input == null)
            return "";
        return LZString._compress(input, 15, new CompressFunctionWrapper() {
            @Override