Clover coverage report - Code Coverage for tapestry release 4.0-alpha-3
Coverage timestamp: Mon May 16 2005 09:05:49 EDT
file stats: LOC: 123   Methods: 3
NCLOC: 61   Classes: 1
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 Source file Conditionals Statements Methods TOTAL
StringSplitter.java 80% 89.5% 66.7% 86.3%
coverage coverage
 1   
 // Copyright 2004, 2005 The Apache Software Foundation
 2   
 //
 3   
 // Licensed under the Apache License, Version 2.0 (the "License");
 4   
 // you may not use this file except in compliance with the License.
 5   
 // You may obtain a copy of the License at
 6   
 //
 7   
 //     http://www.apache.org/licenses/LICENSE-2.0
 8   
 //
 9   
 // Unless required by applicable law or agreed to in writing, software
 10   
 // distributed under the License is distributed on an "AS IS" BASIS,
 11   
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 12   
 // See the License for the specific language governing permissions and
 13   
 // limitations under the License.
 14   
 
 15   
 package org.apache.tapestry.util;
 16   
 
 17   
 /**
 18   
  *  Used to split a string into substrings based on a single character
 19   
  *  delimiter.  A fast, simple version of
 20   
  *  {@link java.util.StringTokenizer}.
 21   
  *
 22   
  *  @author Howard Lewis Ship
 23   
  * 
 24   
  **/
 25   
 
 26   
 public class StringSplitter
 27   
 {
 28   
     private char delimiter;
 29   
 
 30  80
     public StringSplitter(char delimiter)
 31   
     {
 32  80
         this.delimiter = delimiter;
 33   
     }
 34   
 
 35  0
     public char getDelimiter()
 36   
     {
 37  0
         return delimiter;
 38   
     }
 39   
 
 40   
     /**
 41   
      *  Splits a string on the delimter into an array of String
 42   
      *  tokens.  The delimiters are not included in the tokens.  Null
 43   
      *  tokens (caused by two consecutive delimiter) are reduced to an
 44   
      *  empty string. Leading delimiters are ignored.
 45   
      *
 46   
      **/
 47   
 
 48  80
     public String[] splitToArray(String value)
 49   
     {
 50  80
         char[] buffer;
 51  80
         int i;
 52  80
         String[] result;
 53  80
         int resultCount = 0;
 54  80
         int start;
 55  80
         int length;
 56  80
         String token;
 57  80
         String[] newResult;
 58  80
         boolean first = true;
 59   
 
 60  80
         buffer = value.toCharArray();
 61   
 
 62  80
         result = new String[3];
 63   
 
 64  80
         start = 0;
 65  80
         length = 0;
 66   
 
 67  80
         for (i = 0; i < buffer.length; i++)
 68   
         {
 69  486
             if (buffer[i] != delimiter)
 70   
             {
 71  482
                 length++;
 72  482
                 continue;
 73   
             }
 74   
 
 75   
             // This is used to ignore leading delimiter(s).
 76   
 
 77  4
             if (length > 0 || !first)
 78   
             {
 79  4
                 token = new String(buffer, start, length);
 80   
 
 81  4
                 if (resultCount == result.length)
 82   
                 {
 83  0
                     newResult = new String[result.length * 2];
 84   
 
 85  0
                     System.arraycopy(result, 0, newResult, 0, result.length);
 86   
 
 87  0
                     result = newResult;
 88   
                 }
 89   
 
 90  4
                 result[resultCount++] = token;
 91   
 
 92  4
                 first = false;
 93   
             }
 94   
 
 95  4
             start = i + 1;
 96  4
             length = 0;
 97   
         }
 98   
 
 99   
         // Special case:  if the string contains no delimiters
 100   
         // then it isn't really split.  Wrap the input string
 101   
         // in an array and return.  This is a little optimization
 102   
         // to prevent a new String instance from being
 103   
         // created unnecessarily.
 104   
 
 105  80
         if (start == 0 && length == buffer.length)
 106   
         {
 107  77
             result = new String[1];
 108  77
             result[0] = value;
 109  77
             return result;
 110   
         }
 111   
 
 112   
         // If the string is all delimiters, then this
 113   
         // will result in a single empty token.
 114   
 
 115  3
         token = new String(buffer, start, length);
 116   
 
 117  3
         newResult = new String[resultCount + 1];
 118  3
         System.arraycopy(result, 0, newResult, 0, resultCount);
 119  3
         newResult[resultCount] = token;
 120   
 
 121  3
         return newResult;
 122   
     }
 123   
 }