package com.senmesh.sdk.ssb.util;

import java.math.BigInteger;

public class Util {
  private static final char[] DIGITS_LOWER = new char[] { 
      '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 
      'a', 'b', 'c', 'd', 'e', 'f' };
  
  private static final char[] DIGITS_UPPER = new char[] { 
      '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 
      'A', 'B', 'C', 'D', 'E', 'F' };
  
  public static byte[] intToBytes(int num) {
    byte[] bytes = { (byte)(0xFF & num >> 0), (byte)(0xFF & num >> 8), (byte)(0xFF & num >> 16), (byte)(0xFF & num >> 24) };
    return bytes;
  }
  
  public static int byteToInt(byte[] bytes) {
    int num = 0;
    int temp = (0xFF & bytes[0]) << 0;
    num |= temp;
    temp = (0xFF & bytes[1]) << 8;
    num |= temp;
    temp = (0xFF & bytes[2]) << 16;
    num |= temp;
    temp = (0xFF & bytes[3]) << 24;
    num |= temp;
    return num;
  }
  
  public static byte[] longToBytes(long num) {
    byte[] bytes = new byte[8];
    for (int i = 0; i < 8; i++)
      bytes[i] = (byte)(int)(0xFFL & num >> i * 8); 
    return bytes;
  }
  
  public static byte[] byteConvert32Bytes(BigInteger n) {
    byte[] tmpd = (byte[])null;
    if (n == null)
      return null; 
    if ((n.toByteArray()).length == 33) {
      tmpd = new byte[32];
      System.arraycopy(n.toByteArray(), 1, tmpd, 0, 32);
    } else if ((n.toByteArray()).length == 32) {
      tmpd = n.toByteArray();
    } else {
      tmpd = new byte[32];
      for (int i = 0; i < 32 - (n.toByteArray()).length; i++)
        tmpd[i] = 0; 
      System.arraycopy(n.toByteArray(), 0, tmpd, 32 - (n.toByteArray()).length, (n.toByteArray()).length);
    } 
    return tmpd;
  }
  
  public static BigInteger byteConvertInteger(byte[] b) {
    if (b[0] < 0) {
      byte[] temp = new byte[b.length + 1];
      temp[0] = 0;
      System.arraycopy(b, 0, temp, 1, b.length);
      return new BigInteger(temp);
    } 
    return new BigInteger(b);
  }
  
  public static String getHexString(byte[] bytes) {
    return getHexString(bytes, true);
  }
  
  public static String getHexString(byte[] bytes, boolean upperCase) {
    String ret = "";
    for (int i = 0; i < bytes.length; i++)
      ret = ret + Integer.toString((bytes[i] & 0xFF) + 256, 16).substring(1); 
    return upperCase ? ret.toUpperCase() : ret;
  }
  
  public static void printHexString(byte[] bytes) {
    for (int i = 0; i < bytes.length; i++) {
      String hex = Integer.toHexString(bytes[i] & 0xFF);
      if (hex.length() == 1)
        hex = '0' + hex; 
      System.out.print("0x" + hex.toUpperCase() + ",");
    } 
    System.out.println("");
  }
  
  public static byte[] hexStringToBytes(String hexString) {
    if (hexString != null && !hexString.equals("")) {
      hexString = hexString.toUpperCase();
      int length = hexString.length() / 2;
      char[] hexChars = hexString.toCharArray();
      byte[] d = new byte[length];
      for (int i = 0; i < length; i++) {
        int pos = i * 2;
        d[i] = (byte)(charToByte(hexChars[pos]) << 4 | charToByte(hexChars[pos + 1]));
      } 
      return d;
    } 
    return null;
  }
  
  public static byte charToByte(char c) {
    return (byte)"0123456789ABCDEF".indexOf(c);
  }
  
  public static char[] encodeHex(byte[] data) {
    return encodeHex(data, true);
  }
  
  public static char[] encodeHex(byte[] data, boolean toLowerCase) {
    return encodeHex(data, toLowerCase ? DIGITS_LOWER : DIGITS_UPPER);
  }
  
  protected static char[] encodeHex(byte[] data, char[] toDigits) {
    int l = data.length;
    char[] out = new char[l << 1];
    int i = 0;
    for (int var5 = 0; i < l; i++) {
      out[var5++] = toDigits[(0xF0 & data[i]) >>> 4];
      out[var5++] = toDigits[0xF & data[i]];
    } 
    return out;
  }
  
  public static String encodeHexString(byte[] data) {
    return encodeHexString(data, true);
  }
  
  public static String encodeHexString(byte[] data, boolean toLowerCase) {
    return encodeHexString(data, toLowerCase ? DIGITS_LOWER : DIGITS_UPPER);
  }
  
  protected static String encodeHexString(byte[] data, char[] toDigits) {
    return new String(encodeHex(data, toDigits));
  }
  
  public static byte[] decodeHex(char[] data) {
    int len = data.length;
    if ((len & 0x1) != 0)
      throw new RuntimeException("Odd number of characters."); 
    byte[] out = new byte[len >> 1];
    int i = 0;
    for (int j = 0; j < len; i++) {
      int f = toDigit(data[j], j) << 4;
      j++;
      f |= toDigit(data[j], j);
      j++;
      out[i] = (byte)(f & 0xFF);
    } 
    return out;
  }
  
  protected static int toDigit(char ch, int index) {
    int digit = Character.digit(ch, 16);
    if (digit == -1)
      throw new RuntimeException("Illegal hexadecimal character " + ch + " at index " + index); 
    return digit;
  }
  
  public static String StringToAsciiString(String content) {
    String result = "";
    int max = content.length();
    for (int i = 0; i < max; i++) {
      char c = content.charAt(i);
      String b = Integer.toHexString(c);
      result = result + b;
    } 
    return result;
  }
  
  public static String hexStringToString(String hexString, int encodeType) {
    String result = "";
    int max = hexString.length() / encodeType;
    for (int i = 0; i < max; i++) {
      char c = (char)hexStringToAlgorism(hexString.substring(i * encodeType, (i + 1) * encodeType));
      result = result + c;
    } 
    return result;
  }
  
  public static int hexStringToAlgorism(String hex) {
    hex = hex.toUpperCase();
    int max = hex.length();
    int result = 0;
    for (int i = max; i > 0; i--) {
      char c = hex.charAt(i - 1);
      int algorism = 0;
      if (c >= '0' && c <= '9') {
        algorism = c - 48;
      } else {
        algorism = c - 55;
      } 
      result = (int)(result + Math.pow(16.0D, (max - i)) * algorism);
    } 
    return result;
  }
  
  public static String hexStringToBinary(String hex) {
    hex = hex.toUpperCase();
    String result = "";
    int max = hex.length();
    for (int i = 0; i < max; i++) {
      char c = hex.charAt(i);
      switch (c) {
        case '0':
          result = result + "0000";
          break;
        case '1':
          result = result + "0001";
          break;
        case '2':
          result = result + "0010";
          break;
        case '3':
          result = result + "0011";
          break;
        case '4':
          result = result + "0100";
          break;
        case '5':
          result = result + "0101";
          break;
        case '6':
          result = result + "0110";
          break;
        case '7':
          result = result + "0111";
          break;
        case '8':
          result = result + "1000";
          break;
        case '9':
          result = result + "1001";
          break;
        case 'A':
          result = result + "1010";
          break;
        case 'B':
          result = result + "1011";
          break;
        case 'C':
          result = result + "1100";
          break;
        case 'D':
          result = result + "1101";
          break;
        case 'E':
          result = result + "1110";
          break;
        case 'F':
          result = result + "1111";
          break;
      } 
    } 
    return result;
  }
  
  public static String AsciiStringToString(String content) {
    String result = "";
    int length = content.length() / 2;
    for (int i = 0; i < length; i++) {
      String c = content.substring(i * 2, i * 2 + 2);
      int a = hexStringToAlgorism(c);
      char b = (char)a;
      String d = String.valueOf(b);
      result = result + d;
    } 
    return result;
  }
  
  public static String algorismToHexString(int algorism, int maxLength) {
    String result = "";
    result = Integer.toHexString(algorism);
    if (result.length() % 2 == 1)
      result = "0" + result; 
    return patchHexString(result.toUpperCase(), maxLength);
  }
  
  public static String byteToString(byte[] bytearray) {
    String result = "";
    int length = bytearray.length;
    for (int i = 0; i < length; i++) {
      char temp = (char)bytearray[i];
      result = result + temp;
    } 
    return result;
  }
  
  public static int binaryToAlgorism(String binary) {
    int max = binary.length();
    int result = 0;
    for (int i = max; i > 0; i--) {
      char c = binary.charAt(i - 1);
      int algorism = c - 48;
      result = (int)(result + Math.pow(2.0D, (max - i)) * algorism);
    } 
    return result;
  }
  
  public static String algorismToHEXString(int algorism) {
    String result = "";
    result = Integer.toHexString(algorism);
    if (result.length() % 2 == 1)
      result = "0" + result; 
    result = result.toUpperCase();
    return result;
  }
  
  public static String patchHexString(String str, int maxLength) {
    String temp = "";
    for (int i = 0; i < maxLength - str.length(); i++)
      temp = "0" + temp; 
    str = (temp + str).substring(0, maxLength);
    return str;
  }
  
  public static int parseToInt(String s, int defaultInt, int radix) {
    int i;
    boolean var3 = false;
    try {
      i = Integer.parseInt(s, radix);
    } catch (NumberFormatException var5) {
      i = defaultInt;
    } 
    return i;
  }
  
  public static int parseToInt(String s, int defaultInt) {
    int i;
    boolean var2 = false;
    try {
      i = Integer.parseInt(s);
    } catch (NumberFormatException var4) {
      i = defaultInt;
    } 
    return i;
  }
  
  public static byte[] hexToByte(String hex) throws IllegalArgumentException {
    if (hex.length() % 2 != 0)
      throw new IllegalArgumentException(); 
    char[] arr = hex.toCharArray();
    byte[] b = new byte[hex.length() / 2];
    int i = 0;
    int j = 0;
    for (int l = hex.length(); i < l; j++) {
      String swap = "" + arr[i++] + arr[i];
      int byteint = Integer.parseInt(swap, 16) & 0xFF;
      b[j] = (new Integer(byteint)).byteValue();
      i++;
    } 
    return b;
  }
  
  public static String byteToHex(byte[] b) {
    if (b == null)
      throw new IllegalArgumentException("Argument b ( byte array ) is null! "); 
    String hs = "";
    String stmp = "";
    for (int n = 0; n < b.length; n++) {
      stmp = Integer.toHexString(b[n] & 0xFF);
      if (stmp.length() == 1) {
        hs = hs + "0" + stmp;
      } else {
        hs = hs + stmp;
      } 
    } 
    return hs.toUpperCase();
  }
  
  public static byte[] subByte(byte[] input, int startIndex, int length) {
    byte[] bt = new byte[length];
    for (int i = 0; i < length; i++)
      bt[i] = input[i + startIndex]; 
    return bt;
  }
}