package tools;
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import java.math.BigInteger;
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@SuppressWarnings("unused")
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public class Tools {
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/**
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* ½«Ê®Áù½øÖƵÄ×Ö·û´®×ª»»³É×Ö½ÚÊý×é
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*
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* @param hexString
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* @return
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*/
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public static byte[] hexStrToBinaryStr(String hexString) {
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if (hexString==null) {
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return null;
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}
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hexString = hexString.replaceAll(" ", "");
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int len = hexString.length();
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int index = 0;
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byte[] bytes = new byte[len / 2];
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while (index < len) {
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String sub = hexString.substring(index, index + 2);
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bytes[index/2] = (byte)Integer.parseInt(sub,16);
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index += 2;
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}
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return bytes;
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}
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/**
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* ½«Ê®Áù½øÖƵÄ×Ö·û´®×ª»»³É×Ö½ÚÊý×鲻ȥ³ý¿Õ¸ñ
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*
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* @param hexString
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* @return
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*/
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public static byte[] hexStrToBinaryStr2(String hexString) {
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if (hexString==null) {
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return null;
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}
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int len = hexString.length();
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int index = 0;
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byte[] bytes = new byte[len / 2];
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while (index < len) {
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String sub = hexString.substring(index, index + 2);
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bytes[index/2] = (byte)Integer.parseInt(sub,16);
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index += 2;
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}
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return bytes;
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}
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public static final int registersToInt(byte[] bytes) {
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return (
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((bytes[0] & 0xff) << 24) |
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((bytes[1] & 0xff) << 16) |
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((bytes[2] & 0xff) << 8) |
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(bytes[3] & 0xff)
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);
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}//registersToInt
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// hexתASCII
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public static String hexToAscii(String hex) {
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StringBuilder ascii = new StringBuilder();
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// È¥³ý HEX ×Ö·û´®ÖеĿոñ
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hex = hex.replaceAll(" ", "");
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// ÿÁ½¸ö×Ö·ûΪһ×飬ת»»Îª¶ÔÓ¦µÄ×Ö½Ú²¢Æ´½Ó³É ASCII ×Ö·û
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for (int i = 0; i < hex.length(); i += 2) {
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// Ö±½ÓʹÓà charAt »ñȡÿÁ½¸ö×Ö·ûµÄÊ®Áù½øÖÆÊý×Ö
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char hexChar1 = hex.charAt(i);
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char hexChar2 = hex.charAt(i + 1);
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// ×éºÏÊ®Áù½øÖÆ×Ö·ûΪһ¸öÊý×Ö
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int decimalValue = (Character.digit(hexChar1, 16) << 4) + Character.digit(hexChar2, 16);
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// ת»»Îª¶ÔÓ¦µÄ ASCII ×Ö·û²¢Ìí¼Óµ½½á¹ûÖÐ
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ascii.append((char) decimalValue);
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}
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return ascii.toString(); // ·µ»ØÆ´½ÓºóµÄ ASCII ×Ö·û´®
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}
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public static String byteToAscii(byte[] bytes) {
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// ½«×Ö½ÚÊý×éת»»Îª ASCII ×Ö·û´®
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String asciiString = new String(bytes, java.nio.charset.StandardCharsets.US_ASCII);
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return asciiString;
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}
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/**½«×Ö½ÚÊý×éתΪ16½øÖÆ×Ö·û´®*/
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public static String Bytes2HexString(byte[] b) {
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String ret = "";
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for (int i = 0; i < b.length; i++) {
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String hex = Integer.toHexString(b[i] & 0xFF);
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if (hex.length() == 1) {
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hex = '0' + hex;
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}
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ret += hex.toUpperCase();
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}
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return ret;
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}
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public static final float registersToFloat(byte[] bytes) {
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return Float.intBitsToFloat((
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((bytes[0] & 0xff) << 24) |
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((bytes[1] & 0xff) << 16) |
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((bytes[2] & 0xff) << 8) |
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(bytes[3] & 0xff)
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));
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}//
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@SuppressWarnings("unused")
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private static String intToHex(int n) {
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StringBuffer s = new StringBuffer();
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String a;
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char []b = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
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while(n != 0){
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s = s.append(b[n%16]);
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n = n/16;
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}
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a = s.reverse().toString();
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return a;
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}
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//½«·µ»ØµÄÊý¾Ýת»¯Îª10½øÖÆÊý¾Ý
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public static int ormntoint(byte[] bytes){
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int aa=0;
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aa=bytes[0]-48 +(bytes[1]-48)*10+(bytes[2]-48)*100+(bytes[3]-48)*1000;
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return aa;
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}
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/**
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* 16½øÖƵÄ×Ö·û´®±íʾת³É×Ö½ÚÊý×é
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*
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* @param hexString 16½øÖƸñʽµÄ×Ö·û´®
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* @return ת»»ºóµÄ×Ö½ÚÊý×é
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**/
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public static byte[] toByteArray(String hexString) {
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byte[] byteArray=null;
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if(hexString !=null || hexString !="") {
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hexString = hexString.replaceAll(" ", "");
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byteArray = new byte[hexString.length() / 2];
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int k = 0;
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for (int i = 0; i < byteArray.length; i++) {//ÒòΪÊÇ16½øÖÆ£¬×î¶àÖ»»áÕ¼ÓÃ4λ£¬×ª»»³É×Ö½ÚÐèÒªÁ½¸ö16½øÖƵÄ×Ö·û£¬¸ßλÔÚÏÈ
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byte high = (byte) (Character.digit(hexString.charAt(k), 16) & 0xff);
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byte low = (byte) (Character.digit(hexString.charAt(k + 1), 16) & 0xff);
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byteArray[i] = (byte) (high << 4 | low);
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k += 2;
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}
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}
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return byteArray;
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}
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public static byte[] intToRegisters(int v) {
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byte[] registers = new byte[4];
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registers[0] = (byte) (0xff & (v >> 24));
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registers[1] = (byte) (0xff & (v >> 16));
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registers[2] = (byte) (0xff & (v >> 8));
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registers[3] = (byte) (0xff & v);
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return registers;
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}
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//ת³É×Ö½ÚÊý×é
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public static String[] hex(String message) {
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int size=message.length()/2;
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String[] hex=new String[size];
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for(int i=0;i<size;i++) {
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hex[i]=message.substring(i*2, 2+i*2);
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}
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return hex;
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}
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/**
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* 16½øÖÆתΪ10½øÖÆ
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*/
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public static int decodeHEX(String hexs) {
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BigInteger bigint = new BigInteger(hexs, 16);
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int numb = bigint.intValue();
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return numb;
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}
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public static byte decodeHEXToInt8(String hexStr) {
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BigInteger bigInt = new BigInteger(hexStr, 16);
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// ½«ÎÞ·ûºÅÕûÊýת»»ÎªÓзûºÅµÄ8λÕûÊý
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byte result = bigInt.byteValue();
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return result;
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}
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}
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