好些年前写的,偶然找出来,临时用下,顺便分享下~~ 性能好像不咋地
import java.io.ByteArrayOutputStream;
public class UltraEdit {
public static void main(String[] args) {
System.out.println(UltraEdit.getInstance().getHexUpperCase(" 测试 & 数据 Test Data".getBytes()));
System.out.println(UltraEdit.getInstance().b2HEX(" 测试 & 数据 Test Data".getBytes(),":"));
String hex = UltraEdit.getInstance().b2HEX(" 测试 & 数据 Test Data".getBytes());
System.out.println(hex);
System.out.println(new String(UltraEdit.getInstance().hex2b(hex)));
UltraEdit.getInstance().hex2b("F");
}
private final static UltraEdit instance = new UltraEdit();
private UltraEdit() {
Configuration.byte2HexUpper = new Byte2HexUpper();
Configuration.byte2HexLower = new Byte2HexLower();
Configuration.byte2ASCII = new Byte2ASCII();
}
public synchronized static UltraEdit getInstance() {
return instance;
}
public String getHexUpperCase(byte[] data) {
return byte2HexFormat(data, 16, Configuration.byte2HexUpper,Configuration.byte2ASCII);
}
public String getHexLowerCase(byte[] data) {
return byte2HexFormat(data, 16, Configuration.byte2HexLower,Configuration.byte2ASCII);
}
public String getHexUpperCase(byte[] data,int width) {
return byte2HexFormat(data, width, Configuration.byte2HexUpper,Configuration.byte2ASCII);
}
public String getHexLowerCase(byte[] data,int width) {
return byte2HexFormat(data, width, Configuration.byte2HexLower,Configuration.byte2ASCII);
}
/** 将byte[]数据以十六进制的形式显示,显示格式仿照UltraEdit*/
private String byte2HexFormat(byte[] data,int width,
IByte2String hexPartitionMethod,IByte2String strPartitionMethod)
{
StringBuffer sb = new StringBuffer();
//表头
for(int i=0;i<width;i++) {
sb.append("-");
if(i<10) sb.append(i);
else sb.append((char)(i-10+'a'));
sb.append("-");
}
sb.append("\r\n");
int index = 0;
StringBuffer hexPartionLine = new StringBuffer();
StringBuffer strPartionLine = new StringBuffer();
while(index < data.length) {
int lineStart = index;
while(index < data.length && index < lineStart+width) {
hexPartionLine.append(hexPartitionMethod.byte2String(data[index]))
.append(Configuration.DELIMITER);
strPartionLine.append(strPartitionMethod.byte2String(data[index]));
index ++;
}
int placeholderNum = 0;
while(index+placeholderNum < lineStart+width) {//对最后一行不足width的在HexPartition部分补充占位符
hexPartionLine.append(" ");
placeholderNum += 1;
}
sb.append(hexPartionLine).append(Configuration.PARTITION)
.append(strPartionLine).append("\r\n");//完成一行显示
hexPartionLine.delete(0, hexPartionLine.length());
strPartionLine.delete(0, strPartionLine.length());
}
return sb.toString();
}
public String b2HEX(byte[] data) {
return byte2Hex(data, "", Configuration.byte2HexUpper);
}
public String b2HEX(byte[] data,String delimiter) {
return byte2Hex(data, delimiter, Configuration.byte2HexUpper);
}
public String b2hex(byte[] data) {
return byte2Hex(data, "", Configuration.byte2HexLower);
}
public String b2hex(byte[] data,String delimiter) {
return byte2Hex(data, "", Configuration.byte2HexLower);
}
private String byte2Hex(byte[] data,String delimiter,IByte2String form) {
StringBuffer sb = new StringBuffer();
int index = 0;
while(index < data.length) {
sb.append(form.byte2String(data[index])).append(delimiter);
index ++;
}
return sb.toString();
}
public byte[] hex2b(String hexStr) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
if(hexStr.length() % 2 != 0) {
throw new IllegalArgumentException("输入参数"+hexStr+"长度不是偶数.");
}
int c = 0;
while(c < hexStr.length()) {
int high = Configuration.hexChar2Int(hexStr.charAt(c));
int low = Configuration.hexChar2Int(hexStr.charAt(c+1));
if(high == -1) {
throw new IllegalArgumentException("输入参数"+hexStr+".charAt("+c+")="+hexStr.charAt(c)+"不是合法的HexChar");
}
if(low == -1) {
throw new IllegalArgumentException("输入参数"+hexStr+".charAt("+(c+1)+")="+hexStr.charAt(c+1)+"不是合法的HexChar");
}
baos.write(Configuration.BCDPackedFormat(high,low));
c += 2;
}
return baos.toByteArray();
}
private static class Configuration {
static final char[] HEX_UPPER_CASE = new char[]{
'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'
};
static final char[] HEX_LOWER_CASE = new char[]{
'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'
};
/**
* @return -1 表示输入参数hexChar不是个合法的HexChar. 其他情况返回的数据控制在[0,15]
* */
static int hexChar2Int(char hexChar) {
if(Character.isDigit(hexChar)) return hexChar - '0';
else if(Character.isLowerCase(hexChar)) return hexChar - 'a' + 10;
else if(Character.isUpperCase(hexChar)) return hexChar - 'A' + 10;
else return -1;
}
static byte BCDPackedFormat(int high,int lower) {
int min = Math.min(high, lower);
int max = Math.max(high, lower);
if(min<0 || max >15) {
throw new IllegalArgumentException("输入参数"+high+","+lower+"都必须控制在范围[0,15]内");
}
return (byte)(high << 4 | lower);
}
/** 各个Byte之间的分割符号*/
static final String DELIMITER = " ";
/** Hex显示和字符显示区域分割符*/
static final String PARTITION = ";";
static IByte2String byte2HexUpper;
static IByte2String byte2HexLower;
static IByte2String byte2ASCII;
}
interface IByte2String {
public String byte2String(byte b);
}
class Byte2HexUpper implements IByte2String {
public String byte2String(byte b) {
int high = 0x0F & b>>4;
int low = 0x0F & b;
return new String(new char[] {Configuration.HEX_UPPER_CASE[high],
Configuration.HEX_UPPER_CASE[low]});
}
}
class Byte2HexLower implements IByte2String {
public String byte2String(byte b) {
int high = 0x0F & b>>4;
int low = 0x0F & b;
return new String(new char[] {Configuration.HEX_LOWER_CASE[high],
Configuration.HEX_LOWER_CASE[low]});
}
}
class Byte2ASCII implements IByte2String {
private final String INVISIBLE_SUBSTITUTION = ".";
public String byte2String(byte b) {
return (Character.isWhitespace(b) || Character.isLetterOrDigit(b)) ? new String(new byte[]{b}) : INVISIBLE_SUBSTITUTION;
}
}
}
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