1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.apache.maven.doxia.macro;
20
21 import java.util.Map;
22
23 import org.apache.maven.doxia.sink.SinkEventAttributes;
24 import org.apache.maven.doxia.sink.impl.SinkEventAttributeSet;
25
26 /**
27 * Abstract base class to execute <code>Macro</code>.
28 *
29 * @author <a href="mailto:jason@maven.org">Jason van Zyl</a>
30 * @since 1.0
31 */
32 public abstract class AbstractMacro implements Macro {
33 /**
34 * Convert the Map of macro parameters to an AttributeSet.
35 * No check of validity is done, all parameters are added.
36 *
37 * @param parameters the macro parameters.
38 * @return a SinkEventAttributeSet containing the same parameters,
39 * or null if parameters is null.
40 * @since 1.1.1.
41 */
42 protected static SinkEventAttributes getAttributesFromMap(Map<?, ?> parameters) {
43 if (parameters == null) {
44 return null;
45 }
46
47 final int count = parameters.size();
48
49 if (count <= 0) {
50 return null;
51 }
52
53 final SinkEventAttributeSet atts = new SinkEventAttributeSet(count);
54
55 for (Map.Entry<?, ?> entry : parameters.entrySet()) {
56 atts.addAttribute(entry.getKey(), entry.getValue());
57 }
58
59 return atts;
60 }
61 }