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 2004-2009 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  
 package org.seasar.cubby.internal.util;
 17  
 
 18  
 import java.io.ByteArrayOutputStream;
 19  
 import java.io.UnsupportedEncodingException;
 20  
 import java.util.BitSet;
 21  
 
 22  
 /**
 23  
  * URL ボディ部のエンコーダです。
 24  
  * 
 25  
  * @author baba
 26  
  */
 27  
 public class URLBodyEncoder {
 28  
 
 29  1
         protected static byte ESCAPE_CHAR = '%';
 30  
 
 31  
         /**
 32  
          * BitSet of www-form-url safe characters.
 33  
          */
 34  1
         protected static final BitSet WWW_FORM_URL = new BitSet(256);
 35  
 
 36  
         // Static initializer for www_form_url
 37  
         static {
 38  
                 // alpha characters
 39  27
                 for (int i = 'a'; i <= 'z'; i++) {
 40  26
                         WWW_FORM_URL.set(i);
 41  
                 }
 42  27
                 for (int i = 'A'; i <= 'Z'; i++) {
 43  26
                         WWW_FORM_URL.set(i);
 44  
                 }
 45  
                 // numeric characters
 46  11
                 for (int i = '0'; i <= '9'; i++) {
 47  10
                         WWW_FORM_URL.set(i);
 48  
                 }
 49  
                 // special chars
 50  1
                 WWW_FORM_URL.set('-');
 51  1
                 WWW_FORM_URL.set('_');
 52  1
                 WWW_FORM_URL.set('.');
 53  1
                 WWW_FORM_URL.set('*');
 54  
                 // blank to be replaced with +
 55  
                 // WWW_FORM_URL.set(' ');
 56  1
         }
 57  
 
 58  
         /**
 59  
          * Default constructor.
 60  
          */
 61  
         private URLBodyEncoder() {
 62  0
                 super();
 63  0
         }
 64  
 
 65  
         /**
 66  
          * Encodes an array of bytes into an array of URL safe 7-bit characters.
 67  
          * Unsafe characters are escaped.
 68  
          * 
 69  
          * @param urlsafe
 70  
          *            bitset of characters deemed URL safe
 71  
          * @param bytes
 72  
          *            array of bytes to convert to URL safe characters
 73  
          * @return array of bytes containing URL safe characters
 74  
          */
 75  
         public static final byte[] encodeUrl(BitSet urlsafe, final byte[] bytes) {
 76  22
                 if (bytes == null) {
 77  0
                         return null;
 78  
                 }
 79  22
                 if (urlsafe == null) {
 80  0
                         urlsafe = WWW_FORM_URL;
 81  
                 }
 82  
 
 83  22
                 final ByteArrayOutputStream buffer = new ByteArrayOutputStream();
 84  118
                 for (final byte b : bytes) {
 85  96
                         final int b1 = b;
 86  
                         final int b2;
 87  96
                         if (b1 < 0) {
 88  30
                                 b2 = b1 + 256;
 89  
                         } else {
 90  66
                                 b2 = b1;
 91  
                         }
 92  
 
 93  96
                         if (urlsafe.get(b2)) {
 94  62
                                 buffer.write(b2);
 95  
                         } else {
 96  34
                                 buffer.write('%');
 97  34
                                 final char hex1 = Character.toUpperCase(Character.forDigit(
 98  
                                                 (b2 >> 4) & 0xF, 16));
 99  34
                                 final char hex2 = Character.toUpperCase(Character.forDigit(
 100  
                                                 b2 & 0xF, 16));
 101  34
                                 buffer.write(hex1);
 102  34
                                 buffer.write(hex2);
 103  
                         }
 104  
                 }
 105  22
                 return buffer.toByteArray();
 106  
         }
 107  
 
 108  
         /**
 109  
          * Encodes an array of bytes into an array of URL safe 7-bit characters.
 110  
          * Unsafe characters are escaped.
 111  
          * 
 112  
          * @param bytes
 113  
          *            array of bytes to convert to URL safe characters
 114  
          * @return array of bytes containing URL safe characters
 115  
          */
 116  
         public static byte[] encode(final byte[] bytes) {
 117  22
                 return encodeUrl(WWW_FORM_URL, bytes);
 118  
         }
 119  
 
 120  
         /**
 121  
          * Encodes a string into its URL safe form using the specified string
 122  
          * charset. Unsafe characters are escaped.
 123  
          * 
 124  
          * @param pString
 125  
          *            string to convert to a URL safe form
 126  
          * @param charset
 127  
          *            the charset for pString
 128  
          * @return URL safe string
 129  
          * @throws UnsupportedEncodingException
 130  
          *             Thrown if charset is not supported
 131  
          */
 132  
         public static String encode(final String pString, final String charset)
 133  
                         throws UnsupportedEncodingException {
 134  22
                 if (pString == null) {
 135  0
                         return null;
 136  
                 }
 137  22
                 return new String(encode(pString.getBytes(charset)), "US-ASCII");
 138  
         }
 139  
 
 140  
 }