Coverage Report - org.seasar.cubby.internal.util.URLBodyEncoder
 
Classes in this File Line Coverage Branch Coverage Complexity
URLBodyEncoder
86%
32/37
75%
9/12
3
 
 1  
 /*
 2  
  * Copyright 2004-2010 the Seasar Foundation and the Others.
 3  
  *
 4  
  * Licensed under the Apache License, Version 2.0 (the "License");
 5  
  * you may not use this file except in compliance with the License.
 6  
  * You may obtain a copy of the License at
 7  
  *
 8  
  *     http://www.apache.org/licenses/LICENSE-2.0
 9  
  *
 10  
  * Unless required by applicable law or agreed to in writing, software
 11  
  * distributed under the License is distributed on an "AS IS" BASIS,
 12  
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 13  
  * either express or implied. See the License for the specific language
 14  
  * governing permissions and limitations under the License.
 15  
  */
 16  
 
 17  
 package org.seasar.cubby.internal.util;
 18  
 
 19  
 import java.io.ByteArrayOutputStream;
 20  
 import java.io.UnsupportedEncodingException;
 21  
 import java.util.BitSet;
 22  
 
 23  
 /**
 24  
  * URL ボディ部のエンコーダです。
 25  
  * 
 26  
  * @author baba
 27  
  */
 28  
 public class URLBodyEncoder {
 29  
 
 30  1
         protected static byte ESCAPE_CHAR = '%';
 31  
 
 32  
         /**
 33  
          * BitSet of www-form-url safe characters.
 34  
          */
 35  1
         protected static final BitSet WWW_FORM_URL = new BitSet(256);
 36  
 
 37  
         // Static initializer for www_form_url
 38  
         static {
 39  
                 // alpha characters
 40  27
                 for (int i = 'a'; i <= 'z'; i++) {
 41  26
                         WWW_FORM_URL.set(i);
 42  
                 }
 43  27
                 for (int i = 'A'; i <= 'Z'; i++) {
 44  26
                         WWW_FORM_URL.set(i);
 45  
                 }
 46  
                 // numeric characters
 47  11
                 for (int i = '0'; i <= '9'; i++) {
 48  10
                         WWW_FORM_URL.set(i);
 49  
                 }
 50  
                 // special chars
 51  1
                 WWW_FORM_URL.set('-');
 52  1
                 WWW_FORM_URL.set('_');
 53  1
                 WWW_FORM_URL.set('.');
 54  1
                 WWW_FORM_URL.set('*');
 55  
                 // blank to be replaced with +
 56  
                 // WWW_FORM_URL.set(' ');
 57  1
         }
 58  
 
 59  
         /**
 60  
          * Default constructor.
 61  
          */
 62  
         private URLBodyEncoder() {
 63  0
                 super();
 64  0
         }
 65  
 
 66  
         /**
 67  
          * Encodes an array of bytes into an array of URL safe 7-bit characters.
 68  
          * Unsafe characters are escaped.
 69  
          * 
 70  
          * @param urlsafe
 71  
          *            bitset of characters deemed URL safe
 72  
          * @param bytes
 73  
          *            array of bytes to convert to URL safe characters
 74  
          * @return array of bytes containing URL safe characters
 75  
          */
 76  
         public static final byte[] encodeUrl(BitSet urlsafe, final byte[] bytes) {
 77  22
                 if (bytes == null) {
 78  0
                         return null;
 79  
                 }
 80  22
                 if (urlsafe == null) {
 81  0
                         urlsafe = WWW_FORM_URL;
 82  
                 }
 83  
 
 84  22
                 final ByteArrayOutputStream buffer = new ByteArrayOutputStream();
 85  118
                 for (final byte b : bytes) {
 86  96
                         final int b1 = b;
 87  
                         final int b2;
 88  96
                         if (b1 < 0) {
 89  30
                                 b2 = b1 + 256;
 90  
                         } else {
 91  66
                                 b2 = b1;
 92  
                         }
 93  
 
 94  96
                         if (urlsafe.get(b2)) {
 95  62
                                 buffer.write(b2);
 96  
                         } else {
 97  34
                                 buffer.write('%');
 98  34
                                 final char hex1 = Character.toUpperCase(Character.forDigit(
 99  
                                                 (b2 >> 4) & 0xF, 16));
 100  34
                                 final char hex2 = Character.toUpperCase(Character.forDigit(
 101  
                                                 b2 & 0xF, 16));
 102  34
                                 buffer.write(hex1);
 103  34
                                 buffer.write(hex2);
 104  
                         }
 105  
                 }
 106  22
                 return buffer.toByteArray();
 107  
         }
 108  
 
 109  
         /**
 110  
          * Encodes an array of bytes into an array of URL safe 7-bit characters.
 111  
          * Unsafe characters are escaped.
 112  
          * 
 113  
          * @param bytes
 114  
          *            array of bytes to convert to URL safe characters
 115  
          * @return array of bytes containing URL safe characters
 116  
          */
 117  
         public static byte[] encode(final byte[] bytes) {
 118  22
                 return encodeUrl(WWW_FORM_URL, bytes);
 119  
         }
 120  
 
 121  
         /**
 122  
          * Encodes a string into its URL safe form using the specified string
 123  
          * charset. Unsafe characters are escaped.
 124  
          * 
 125  
          * @param pString
 126  
          *            string to convert to a URL safe form
 127  
          * @param charset
 128  
          *            the charset for pString
 129  
          * @return URL safe string
 130  
          * @throws UnsupportedEncodingException
 131  
          *             Thrown if charset is not supported
 132  
          */
 133  
         public static String encode(final String pString, final String charset)
 134  
                         throws UnsupportedEncodingException {
 135  22
                 if (pString == null) {
 136  0
                         return null;
 137  
                 }
 138  22
                 return new String(encode(pString.getBytes(charset)), "US-ASCII");
 139  
         }
 140  
 
 141  
 }