1 /**
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.tika.mime;
18
19 /**
20 * Defines a MagicClause.
21 *
22 */
23 class MagicClause implements Clause {
24
25 private Operator op = null;
26
27 private Clause c1 = null;
28
29 private Clause c2 = null;
30
31 private int size = 0;
32
33 MagicClause(Operator op, Clause c1, Clause c2) {
34 this.op = op;
35 this.c1 = c1;
36 this.c2 = c2;
37 this.size = c1.size() + c2.size();
38 }
39
40 public boolean eval(byte[] data) {
41 return op.eval(c1.eval(data), c2.eval(data));
42 }
43
44 public int size() {
45 return size;
46 }
47
48 public String toString() {
49 return new StringBuffer().append("(").append(c1).append(" ").append(op)
50 .append(" ").append(c2).append(")").toString();
51 }
52 }