content: /*
   * Copyright 2013-2023 the original author or authors.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      https://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.alibaba.cloud.nacos.utils;
  
  /**
   * @author zkzlx
   */
  public final class NacosConfigUtils {
  
  	private NacosConfigUtils() {
  	}
  
  	/**
  	 * Convert Chinese characters to Unicode.
  	 * @param configValue value of config
  	 * @return new string
  	 */
  	public static String selectiveConvertUnicode(String configValue) {
  		StringBuilder sb = new StringBuilder();
  		char[] chars = configValue.toCharArray();
  		for (char aChar : chars) {
  			if (isBaseLetter(aChar)) {
  				sb.append(aChar);
  			}
  			else {
  				sb.append(String.format("\\u%04x", (int) aChar));
  			}
  		}
  		return sb.toString();
  	}
  
  	/**
  	 * char is base latin or whitespace?
  	 * @param ch a character
  	 * @return true or false
  	 */
  	public static boolean isBaseLetter(char ch) {
  		Character.UnicodeBlock ub = Character.UnicodeBlock.of(ch);
  		return ub == Character.UnicodeBlock.BASIC_LATIN || Character.isWhitespace(ch);
  	}
  
  	/**
  	 * char is chinese?
  	 * @param c a character
  	 * @return true or false
  	 */
  	public static boolean isChinese(char c) {
  		Character.UnicodeBlock ub = Character.UnicodeBlock.of(c);
  		return ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS
  				|| ub == Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS
  				|| ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A
  				|| ub == Character.UnicodeBlock.GENERAL_PUNCTUATION
  				|| ub == Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION
  				|| ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS;
  	}
  
  }
  