content: /*
  *  Copyright Beijing 58 Information Technology Co.,Ltd.
  *
  *  Licensed to the Apache Software Foundation (ASF) under one
  *  or more contributor license agreements.  See the NOTICE file
  *  distributed with this work for additional information
  *  regarding copyright ownership.  The ASF licenses this file
  *  to you 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
  *
  *        http://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.bj58.argo.thirdparty;
  
  import java.util.ArrayList;
  import java.util.Collection;
  import java.util.List;
  import java.util.StringTokenizer;
  
  /**
   * @author Service Platform Architecture Team (spat@58.com)
   */
  public class StringUtil {
  
      /**
       * Tokenize the given String into a String array via a StringTokenizer.
       * Trims tokens and omits empty tokens.
       * <p>The given delimiters string is supposed to consist of any number of
       * delimiter characters. Each of those characters can be used to separate
       * tokens. A delimiter is always a single character; for multi-character
       * delimiters, consider using <code>delimitedListToStringArray</code>
       * @param str the String to tokenize
       * @param delimiters the delimiter characters, assembled as String
       * (each of those characters is individually considered as delimiter).
       * @return an array of the tokens
       * @see java.util.StringTokenizer
       * @see String#trim()
       */
      public static String[] tokenizeToStringArray(String str, String delimiters) {
          return tokenizeToStringArray(str, delimiters, true, true);
      }
  
      /**
       * Tokenize the given String into a String array via a StringTokenizer.
       * <p>The given delimiters string is supposed to consist of any number of
       * delimiter characters. Each of those characters can be used to separate
       * tokens. A delimiter is always a single character; for multi-character
       * delimiters, consider using <code>delimitedListToStringArray</code>
       * @param str the String to tokenize
       * @param delimiters the delimiter characters, assembled as String
       * (each of those characters is individually considered as delimiter)
       * @param trimTokens trim the tokens via String's <code>trim</code>
       * @param ignoreEmptyTokens omit empty tokens from the result array
       * (only applies to tokens that are empty after trimming; StringTokenizer
       * will not consider subsequent delimiters as token in the first place).
       * @return an array of the tokens (<code>null</code> if the input String
       * was <code>null</code>)
       * @see java.util.StringTokenizer
       * @see String#trim()
       */
      public static String[] tokenizeToStringArray(
              String str, String delimiters, boolean trimTokens, boolean ignoreEmptyTokens) {
  
          if (str == null) {
              return null;
          }
          StringTokenizer st = new StringTokenizer(str, delimiters);
          List<String> tokens = new ArrayList<String>();
          while (st.hasMoreTokens()) {
              String token = st.nextToken();
              if (trimTokens) {
                  token = token.trim();
              }
              if (!ignoreEmptyTokens || token.length() > 0) {
                  tokens.add(token);
              }
          }
          return toStringArray(tokens);
      }
      /**
       * Copy the given Collection into a String array.
       * The Collection must contain String elements only.
       * @param collection the Collection to copy
       * @return the String array (<code>null</code> if the passed-in
       * Collection was <code>null</code>)
       */
      public static String[] toStringArray(Collection<String> collection) {
          if (collection == null) {
              return null;
          }
          return collection.toArray(new String[collection.size()]);
      }
  
  
      /**
       * Check whether the given String has actual text.
       * More specifically, returns <code>true</code> if the string not <code>null</code>,
       * its length is greater than 0, and it contains at least one non-whitespace character.
       * @param str the String to check (may be <code>null</code>)
       * @return <code>true</code> if the String is not <code>null</code>, its length is
       * greater than 0, and it does not contain whitespace only
       * @see #hasText(CharSequence)
       */
      public static boolean hasText(String str) {
          return hasText((CharSequence) str);
      }
  
  
      public static boolean hasText(CharSequence str) {
          if (!hasLength(str)) {
              return false;
          }
          int strLen = str.length();
          for (int i = 0; i < strLen; i++) {
              if (!Character.isWhitespace(str.charAt(i))) {
                  return true;
              }
          }
          return false;
      }
  
      /**
       * 检查包含空白字符在内的字符系列长度
       * <p><pre>
       * StringUtils.hasLength(null) = false
       * StringUtils.hasLength("") = false
       * StringUtils.hasLength(" ") = true
       * StringUtils.hasLength("Hello") = true
       * </pre>
       * @param str the CharSequence to check (may be <code>null</code>)
       * @return <code>true</code> if the CharSequence is not null and has length
       * @see #hasText(String)
       */
      public static boolean hasLength(CharSequence str) {
          return (str != null && str.length() > 0);
      }
  
  
      /**
       * Count the occurrences of the substring in string s.
       * @param str string to search in. Return 0 if this is null.
       * @param sub string to search for. Return 0 if this is null.
       */
      public static int countOccurrencesOf(String str, String sub) {
          if (str == null || sub == null || str.length() == 0 || sub.length() == 0) {
              return 0;
          }
          int count = 0;
          int pos = 0;
          int idx;
          while ((idx = str.indexOf(sub, pos)) != -1) {
              ++count;
              pos = idx + sub.length();
          }
          return count;
      }
      public static String composeMessage(String source, String... replacement) {
  		if (replacement.length == 0) {
  			return source;
  		}
  		for (int i = 0; i < replacement.length; i++) {
  			int start = source.indexOf("{");
  			if (start < 0) {
  				return source;
  			}
  			int end = source.indexOf("}") + 1;
  			String pattern = source.substring(start, end);
  			if(replacement[i]==null){
  				source = source.replace(pattern, "");
  			}else{
  				source = source.replace(pattern, replacement[i]);
  			}
  		}
  		return source;
  	}
  }
  