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 org.apache.hc.core5.http.message;
29
30 import java.util.Iterator;
31
32 import org.apache.hc.core5.http.Header;
33 import org.apache.hc.core5.http.HeaderElement;
34 import org.apache.hc.core5.util.Args;
35
36 /**
37 * {@link java.util.Iterator} of {@link org.apache.hc.core5.http.HeaderElement}s.
38 *
39 * @since 4.0
40 */
41 public class BasicHeaderElementIterator extends AbstractHeaderElementIterator<HeaderElement> {
42
43 private final HeaderValueParser parser;
44
45 /**
46 * Creates a new instance of BasicHeaderElementIterator
47 */
48 public BasicHeaderElementIterator(
49 final Iterator<Header> headerIterator,
50 final HeaderValueParser parser) {
51 super(headerIterator);
52 this.parser = Args.notNull(parser, "Parser");
53 }
54
55 public BasicHeaderElementIterator(final Iterator<Header> headerIterator) {
56 this(headerIterator, BasicHeaderValueParser.INSTANCE);
57 }
58
59 @Override
60 HeaderElement parseHeaderElement(final CharSequence buf, final ParserCursor cursor) {
61 final HeaderElement e = this.parser.parseHeaderElement(buf, cursor);
62 if (!(e.getName().isEmpty() && e.getValue() == null)) {
63 return e;
64 }
65 return null;
66 }
67
68 }