The Tor Browser / file comparison
comparison: mobile/android/thirdparty/ch/boye/httpclientandroidlib/message/BasicHeaderElementIterator.java
mobile/android/thirdparty/ch/boye/httpclientandroidlib/message/BasicHeaderElementIterator.java
- branch
- TOR_BUG_3246
- changeset 4
- fc2d59ddac77
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| -1:000000000000 | 0:20459706a597 |
|---|---|
| 1 /* | |
| 2 * ==================================================================== | |
| 3 * Licensed to the Apache Software Foundation (ASF) under one | |
| 4 * or more contributor license agreements. See the NOTICE file | |
| 5 * distributed with this work for additional information | |
| 6 * regarding copyright ownership. The ASF licenses this file | |
| 7 * to you under the Apache License, Version 2.0 (the | |
| 8 * "License"); you may not use this file except in compliance | |
| 9 * with the License. You may obtain a copy of the License at | |
| 10 * | |
| 11 * http://www.apache.org/licenses/LICENSE-2.0 | |
| 12 * | |
| 13 * Unless required by applicable law or agreed to in writing, | |
| 14 * software distributed under the License is distributed on an | |
| 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | |
| 16 * KIND, either express or implied. See the License for the | |
| 17 * specific language governing permissions and limitations | |
| 18 * under the License. | |
| 19 * ==================================================================== | |
| 20 * | |
| 21 * This software consists of voluntary contributions made by many | |
| 22 * individuals on behalf of the Apache Software Foundation. For more | |
| 23 * information on the Apache Software Foundation, please see | |
| 24 * <http://www.apache.org/>. | |
| 25 * | |
| 26 */ | |
| 27 | |
| 28 package ch.boye.httpclientandroidlib.message; | |
| 29 | |
| 30 import java.util.NoSuchElementException; | |
| 31 | |
| 32 import ch.boye.httpclientandroidlib.FormattedHeader; | |
| 33 import ch.boye.httpclientandroidlib.Header; | |
| 34 import ch.boye.httpclientandroidlib.HeaderElement; | |
| 35 import ch.boye.httpclientandroidlib.HeaderElementIterator; | |
| 36 import ch.boye.httpclientandroidlib.HeaderIterator; | |
| 37 import ch.boye.httpclientandroidlib.util.CharArrayBuffer; | |
| 38 | |
| 39 /** | |
| 40 * Basic implementation of a {@link HeaderElementIterator}. | |
| 41 * | |
| 42 * @since 4.0 | |
| 43 */ | |
| 44 public class BasicHeaderElementIterator implements HeaderElementIterator { | |
| 45 | |
| 46 private final HeaderIterator headerIt; | |
| 47 private final HeaderValueParser parser; | |
| 48 | |
| 49 private HeaderElement currentElement = null; | |
| 50 private CharArrayBuffer buffer = null; | |
| 51 private ParserCursor cursor = null; | |
| 52 | |
| 53 /** | |
| 54 * Creates a new instance of BasicHeaderElementIterator | |
| 55 */ | |
| 56 public BasicHeaderElementIterator( | |
| 57 final HeaderIterator headerIterator, | |
| 58 final HeaderValueParser parser) { | |
| 59 if (headerIterator == null) { | |
| 60 throw new IllegalArgumentException("Header iterator may not be null"); | |
| 61 } | |
| 62 if (parser == null) { | |
| 63 throw new IllegalArgumentException("Parser may not be null"); | |
| 64 } | |
| 65 this.headerIt = headerIterator; | |
| 66 this.parser = parser; | |
| 67 } | |
| 68 | |
| 69 | |
| 70 public BasicHeaderElementIterator(final HeaderIterator headerIterator) { | |
| 71 this(headerIterator, BasicHeaderValueParser.DEFAULT); | |
| 72 } | |
| 73 | |
| 74 | |
| 75 private void bufferHeaderValue() { | |
| 76 this.cursor = null; | |
| 77 this.buffer = null; | |
| 78 while (this.headerIt.hasNext()) { | |
| 79 Header h = this.headerIt.nextHeader(); | |
| 80 if (h instanceof FormattedHeader) { | |
| 81 this.buffer = ((FormattedHeader) h).getBuffer(); | |
| 82 this.cursor = new ParserCursor(0, this.buffer.length()); | |
| 83 this.cursor.updatePos(((FormattedHeader) h).getValuePos()); | |
| 84 break; | |
| 85 } else { | |
| 86 String value = h.getValue(); | |
| 87 if (value != null) { | |
| 88 this.buffer = new CharArrayBuffer(value.length()); | |
| 89 this.buffer.append(value); | |
| 90 this.cursor = new ParserCursor(0, this.buffer.length()); | |
| 91 break; | |
| 92 } | |
| 93 } | |
| 94 } | |
| 95 } | |
| 96 | |
| 97 private void parseNextElement() { | |
| 98 // loop while there are headers left to parse | |
| 99 while (this.headerIt.hasNext() || this.cursor != null) { | |
| 100 if (this.cursor == null || this.cursor.atEnd()) { | |
| 101 // get next header value | |
| 102 bufferHeaderValue(); | |
| 103 } | |
| 104 // Anything buffered? | |
| 105 if (this.cursor != null) { | |
| 106 // loop while there is data in the buffer | |
| 107 while (!this.cursor.atEnd()) { | |
| 108 HeaderElement e = this.parser.parseHeaderElement(this.buffer, this.cursor); | |
| 109 if (!(e.getName().length() == 0 && e.getValue() == null)) { | |
| 110 // Found something | |
| 111 this.currentElement = e; | |
| 112 return; | |
| 113 } | |
| 114 } | |
| 115 // if at the end of the buffer | |
| 116 if (this.cursor.atEnd()) { | |
| 117 // discard it | |
| 118 this.cursor = null; | |
| 119 this.buffer = null; | |
| 120 } | |
| 121 } | |
| 122 } | |
| 123 } | |
| 124 | |
| 125 public boolean hasNext() { | |
| 126 if (this.currentElement == null) { | |
| 127 parseNextElement(); | |
| 128 } | |
| 129 return this.currentElement != null; | |
| 130 } | |
| 131 | |
| 132 public HeaderElement nextElement() throws NoSuchElementException { | |
| 133 if (this.currentElement == null) { | |
| 134 parseNextElement(); | |
| 135 } | |
| 136 | |
| 137 if (this.currentElement == null) { | |
| 138 throw new NoSuchElementException("No more header elements available"); | |
| 139 } | |
| 140 | |
| 141 HeaderElement element = this.currentElement; | |
| 142 this.currentElement = null; | |
| 143 return element; | |
| 144 } | |
| 145 | |
| 146 public final Object next() throws NoSuchElementException { | |
| 147 return nextElement(); | |
| 148 } | |
| 149 | |
| 150 public void remove() throws UnsupportedOperationException { | |
| 151 throw new UnsupportedOperationException("Remove not supported"); | |
| 152 } | |
| 153 | |
| 154 } |
