package com.baidu.disconf.web.utils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Created by knightliao on 15/1/7.
*/
public class CodeUtils {
protected static final Logger LOG = LoggerFactory.getLogger(CodeUtils.class);
/**
* utf-8 转换成 unicode
*/
public static String utf8ToUnicode(String inStr) {
char[] myBuffer = inStr.toCharArray();
StringBuffer sb = new StringBuffer();
for (int i = 0; i < inStr.length(); i++) {
Character.UnicodeBlock ub = Character.UnicodeBlock.of(myBuffer[i]);
if (ub == Character.UnicodeBlock.BASIC_LATIN) {
sb.append(myBuffer[i]);
} else if (ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS) {
int j = (int) myBuffer[i] - 65248;
sb.append((char) j);
} else {
int chr1 = (char) myBuffer[i];
String hexS = Integer.toHexString(chr1);
String unicode = "\\u" + hexS;
sb.append(unicode.toLowerCase());
}
}
return sb.toString();
}
/**
* unicode 转换成 utf-8
*/
public static String unicodeToUtf8(String theString) {
if (theString == null) {
return null;
}
char aChar;
int len = theString.length();
StringBuffer outBuffer = new StringBuffer(len);
for (int x = 0; x < len; ) {
aChar = theString.charAt(x++);
if (aChar == '\\') {
aChar = theString.charAt(x++);
if (aChar == 'u') {
// Read the xxxx
int value = 0;
for (int i = 0; i < 4; i++) {
aChar = theString.charAt(x++);
switch (aChar) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
value = (value << 4) + aChar - '0';
break;
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
value = (value << 4) + 10 + aChar - 'a';
break;
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
value = (value << 4) + 10 + aChar - 'A';
break;
default:
//throw new IllegalArgumentException("Malformed \\uxxxx encoding." + value);
// filter this bad case
value = 0;
break;
}
}
outBuffer.append((char) value);
} else {
if (aChar == 't') {
aChar = '\t';
} else if (aChar == 'r') {
aChar = '\r';
} else if (aChar == 'n') {
aChar = '\n';
} else if (aChar == 'f') {
aChar = '\f';
}
outBuffer.append(aChar);
}
} else {
outBuffer.append(aChar);
}
}
return outBuffer.toString();
}
}