| /* |
| * 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.parser.microsoft.rtf; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.Collections; |
| import java.util.Set; |
| |
| import org.apache.commons.io.input.TaggedInputStream; |
| import org.xml.sax.ContentHandler; |
| import org.xml.sax.SAXException; |
| |
| import org.apache.tika.config.Field; |
| import org.apache.tika.exception.TikaException; |
| import org.apache.tika.metadata.Metadata; |
| import org.apache.tika.mime.MediaType; |
| import org.apache.tika.parser.AbstractParser; |
| import org.apache.tika.parser.ParseContext; |
| import org.apache.tika.sax.XHTMLContentHandler; |
| |
| /** |
| * RTF parser |
| */ |
| public class RTFParser extends AbstractParser { |
| |
| /** |
| * Serial version UID |
| */ |
| private static final long serialVersionUID = -4165069489372320313L; |
| |
| private static final Set<MediaType> SUPPORTED_TYPES = |
| Collections.singleton(MediaType.application("rtf")); |
| /** |
| * maximum number of bytes per embedded object/pict (default: 20MB) |
| */ |
| private static int EMB_OBJ_MAX_BYTES = 20 * 1024 * 1024; //20MB |
| //get rid of this once we get rid of the other static maxbytes... |
| private static volatile boolean USE_STATIC = false; |
| @Field |
| private int memoryLimitInKb = EMB_OBJ_MAX_BYTES / 1024; |
| @Field |
| private boolean ignoreListMarkup = false; |
| |
| /** |
| * See {@link #setMaxBytesForEmbeddedObject(int)}. |
| * |
| * @return maximum number of bytes allowed for an embedded object. |
| */ |
| @Deprecated |
| public static int getMaxBytesForEmbeddedObject() { |
| return EMB_OBJ_MAX_BYTES; |
| } |
| |
| /** |
| * Bytes for embedded objects are currently cached in memory. |
| * If something goes wrong during the parsing of an embedded object, |
| * it is possible that a read length may be crazily too long |
| * and cause a heap crash. |
| * |
| * @param max maximum number of bytes to allow for embedded objects. If |
| * the embedded object has more than this number of bytes, skip it. |
| * @deprecated use {@link #setMemoryLimitInKb(int)} instead |
| */ |
| @Deprecated |
| public static void setMaxBytesForEmbeddedObject(int max) { |
| EMB_OBJ_MAX_BYTES = max; |
| USE_STATIC = true; |
| } |
| |
| public Set<MediaType> getSupportedTypes(ParseContext context) { |
| return SUPPORTED_TYPES; |
| } |
| |
| public void parse(InputStream stream, ContentHandler handler, Metadata metadata, |
| ParseContext context) throws IOException, SAXException, TikaException { |
| metadata.set(Metadata.CONTENT_TYPE, "application/rtf"); |
| TaggedInputStream tagged = new TaggedInputStream(stream); |
| try { |
| XHTMLContentHandler xhtmlHandler = new XHTMLContentHandler(handler, metadata); |
| RTFEmbObjHandler embObjHandler = |
| new RTFEmbObjHandler(xhtmlHandler, metadata, context, getMemoryLimitInKb()); |
| final TextExtractor ert = new TextExtractor(xhtmlHandler, metadata, embObjHandler); |
| ert.setIgnoreListMarkup(ignoreListMarkup); |
| ert.extract(stream); |
| } catch (IOException e) { |
| tagged.throwIfCauseOf(e); |
| throw new TikaException("Error parsing an RTF document", e); |
| } |
| } |
| |
| private int getMemoryLimitInKb() { |
| //there's a race condition here, but it shouldn't matter. |
| if (USE_STATIC) { |
| if (EMB_OBJ_MAX_BYTES < 0) { |
| return EMB_OBJ_MAX_BYTES; |
| } |
| return EMB_OBJ_MAX_BYTES / 1024; |
| } |
| return memoryLimitInKb; |
| } |
| |
| @Field |
| public void setMemoryLimitInKb(int memoryLimitInKb) { |
| this.memoryLimitInKb = memoryLimitInKb; |
| USE_STATIC = false; |
| } |
| } |