| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.tika.mime; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.IOException; |
| |
| import org.apache.tika.detect.MagicDetector; |
| import org.apache.tika.metadata.Metadata; |
| |
| /** |
| * Defines a magic match. |
| */ |
| class MagicMatch implements Clause { |
| |
| private final MagicDetector detector; |
| |
| private final int length; |
| |
| MagicMatch(MagicDetector detector, int length) throws MimeTypeException { |
| this.detector = detector; |
| this.length = length; |
| } |
| |
| public boolean eval(byte[] data) { |
| try { |
| return detector.detect( |
| new ByteArrayInputStream(data), new Metadata()) |
| != MediaType.OCTET_STREAM; |
| } catch (IOException e) { |
| // Should never happen with a ByteArrayInputStream |
| return false; |
| } |
| } |
| |
| public int size() { |
| return length; |
| } |
| |
| public String toString() { |
| return detector.toString(); |
| } |
| |
| } |