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  // Copyright 2004, 2005 The Apache Software Foundation
  //
  // 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
  //
  //     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 org.apache.tapestry.util;

Used to split a string into substrings based on a single character delimiter. A fast, simple version of java.util.StringTokenizer.

Author(s):
Howard Lewis Ship
 
 
 public class StringSplitter
 {
 
     private char _delimiter;
 
     public StringSplitter(char delimiter)
     {
         this. = delimiter;
     }
 
     public char getDelimiter()
     {
         return ;
     }

    
Splits a string on the delimter into an array of String tokens. The delimiters are not included in the tokens. Null tokens (caused by two consecutive delimiter) are reduced to an empty string. Leading delimiters are ignored.
 
 
     public String[] splitToArray(String value)
     {
         char[] buffer;
         int i;
         String[] result;
         int resultCount = 0;
         int start;
         int length;
         String token;
         String[] newResult;
         boolean first = true;
 
         buffer = value.toCharArray();
 
         result = new String[3];
 
         start = 0;
         length = 0;
 
         for(i = 0; i < buffer.lengthi++)
         {
             if (buffer[i] != )
             {
                 length++;
                 continue;
             }
 
             // This is used to ignore leading delimiter(s).
 
             if (length > 0 || !first)
             {
                 token = new String(bufferstartlength);
 
                 if (resultCount == result.length)
                 {
                     newResult = new String[result.length * 2];
 
                     System.arraycopy(result, 0, newResult, 0, result.length);
 
                     result = newResult;
                 }
 
                 result[resultCount++] = token;
 
                 first = false;
             }
 
             start = i + 1;
             length = 0;
         }
 
         // Special case: if the string contains no delimiters
         // then it isn't really split. Wrap the input string
         // in an array and return. This is a little optimization
        // to prevent a new String instance from being
        // created unnecessarily.
        if (start == 0 && length == buffer.length)
        {
            result = new String[1];
            result[0] = value;
            return result;
        }
        // If the string is all delimiters, then this
        // will result in a single empty token.
        token = new String(bufferstartlength);
        newResult = new String[resultCount + 1];
        System.arraycopy(result, 0, newResult, 0, resultCount);
        newResult[resultCount] = token;
        return newResult;
    }
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