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org.apache.tika.parser.microsoft.SummaryExtractor Maven / Gradle / Ivy
/*
* 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;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Date;
import java.util.HashSet;
import java.util.Set;
import org.apache.poi.hpsf.CustomProperties;
import org.apache.poi.hpsf.DocumentSummaryInformation;
import org.apache.poi.hpsf.MarkUnsupportedException;
import org.apache.poi.hpsf.NoPropertySetStreamException;
import org.apache.poi.hpsf.PropertySet;
import org.apache.poi.hpsf.SummaryInformation;
import org.apache.poi.hpsf.UnexpectedPropertySetTypeException;
import org.apache.poi.poifs.filesystem.DirectoryNode;
import org.apache.poi.poifs.filesystem.DocumentEntry;
import org.apache.poi.poifs.filesystem.DocumentInputStream;
import org.apache.poi.poifs.filesystem.NPOIFSFileSystem;
import org.apache.tika.exception.TikaException;
import org.apache.tika.metadata.MSOffice;
import org.apache.tika.metadata.Metadata;
import org.apache.tika.metadata.Office;
import org.apache.tika.metadata.OfficeOpenXMLCore;
import org.apache.tika.metadata.OfficeOpenXMLExtended;
import org.apache.tika.metadata.PagedText;
import org.apache.tika.metadata.Property;
import org.apache.tika.metadata.TikaCoreProperties;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Extractor for Common OLE2 (HPSF) metadata
*/
public class SummaryExtractor {
private static final Logger LOG = LoggerFactory.getLogger(AbstractPOIFSExtractor.class);
private static final String SUMMARY_INFORMATION =
SummaryInformation.DEFAULT_STREAM_NAME;
private static final String DOCUMENT_SUMMARY_INFORMATION =
DocumentSummaryInformation.DEFAULT_STREAM_NAME;
private final Metadata metadata;
public SummaryExtractor(Metadata metadata) {
this.metadata = metadata;
}
public void parseSummaries(NPOIFSFileSystem filesystem)
throws IOException, TikaException {
parseSummaries(filesystem.getRoot());
}
public void parseSummaries(DirectoryNode root)
throws IOException, TikaException {
parseSummaryEntryIfExists(root, SUMMARY_INFORMATION);
parseSummaryEntryIfExists(root, DOCUMENT_SUMMARY_INFORMATION);
}
private void parseSummaryEntryIfExists(
DirectoryNode root, String entryName)
throws IOException, TikaException {
try {
DocumentEntry entry =
(DocumentEntry) root.getEntry(entryName);
PropertySet properties =
new PropertySet(new DocumentInputStream(entry));
if (properties.isSummaryInformation()) {
parse(new SummaryInformation(properties));
}
if (properties.isDocumentSummaryInformation()) {
parse(new DocumentSummaryInformation(properties));
}
} catch (FileNotFoundException e) {
// entry does not exist, just skip it
} catch (NoPropertySetStreamException e) {
// no property stream, just skip it
} catch (UnexpectedPropertySetTypeException e) {
throw new TikaException("Unexpected HPSF document", e);
} catch (MarkUnsupportedException e) {
throw new TikaException("Invalid DocumentInputStream", e);
} catch (Exception e) {
LOG.warn("Ignoring unexpected exception while parsing summary entry {}", entryName, e);
}
}
private void parse(SummaryInformation summary) {
set(TikaCoreProperties.TITLE, summary.getTitle());
addMulti(metadata, TikaCoreProperties.CREATOR, summary.getAuthor());
set(TikaCoreProperties.KEYWORDS, summary.getKeywords());
// TODO Move to OO subject in Tika 2.0
set(TikaCoreProperties.TRANSITION_SUBJECT_TO_OO_SUBJECT, summary.getSubject());
set(TikaCoreProperties.MODIFIER, summary.getLastAuthor());
set(TikaCoreProperties.COMMENTS, summary.getComments());
set(OfficeOpenXMLExtended.TEMPLATE, summary.getTemplate());
set(OfficeOpenXMLExtended.APPLICATION, summary.getApplicationName());
set(OfficeOpenXMLCore.REVISION, summary.getRevNumber());
set(TikaCoreProperties.CREATED, summary.getCreateDateTime());
set(TikaCoreProperties.MODIFIED, summary.getLastSaveDateTime());
set(TikaCoreProperties.PRINT_DATE, summary.getLastPrinted());
set(Metadata.EDIT_TIME, summary.getEditTime());
set(OfficeOpenXMLExtended.DOC_SECURITY, summary.getSecurity());
// New style counts
set(Office.WORD_COUNT, summary.getWordCount());
set(Office.CHARACTER_COUNT, summary.getCharCount());
set(Office.PAGE_COUNT, summary.getPageCount());
if (summary.getPageCount() > 0) {
metadata.set(PagedText.N_PAGES, summary.getPageCount());
}
// Old style, Tika 1.0 properties
// TODO Remove these in Tika 2.0
set(Metadata.TEMPLATE, summary.getTemplate());
set(Metadata.APPLICATION_NAME, summary.getApplicationName());
set(Metadata.REVISION_NUMBER, summary.getRevNumber());
set(Metadata.SECURITY, summary.getSecurity());
set(MSOffice.WORD_COUNT, summary.getWordCount());
set(MSOffice.CHARACTER_COUNT, summary.getCharCount());
set(MSOffice.PAGE_COUNT, summary.getPageCount());
}
private void parse(DocumentSummaryInformation summary) {
set(OfficeOpenXMLExtended.COMPANY, summary.getCompany());
addMulti(metadata, OfficeOpenXMLExtended.MANAGER, summary.getManager());
set(TikaCoreProperties.LANGUAGE, getLanguage(summary));
set(OfficeOpenXMLCore.CATEGORY, summary.getCategory());
// New style counts
set(Office.SLIDE_COUNT, summary.getSlideCount());
if (summary.getSlideCount() > 0) {
metadata.set(PagedText.N_PAGES, summary.getSlideCount());
}
// Old style, Tika 1.0 counts
// TODO Remove these in Tika 2.0
set(Metadata.COMPANY, summary.getCompany());
set(Metadata.MANAGER, summary.getManager());
set(MSOffice.SLIDE_COUNT, summary.getSlideCount());
set(Metadata.CATEGORY, summary.getCategory());
parse(summary.getCustomProperties());
}
private String getLanguage(DocumentSummaryInformation summary) {
CustomProperties customProperties = summary.getCustomProperties();
if (customProperties != null) {
Object value = customProperties.get("Language");
if (value instanceof String) {
return (String) value;
}
}
return null;
}
/**
* Attempt to parse custom document properties and add to the collection of metadata
*
* @param customProperties
*/
private void parse(CustomProperties customProperties) {
if (customProperties != null) {
for (String name : customProperties.nameSet()) {
// Apply the custom prefix
String key = Metadata.USER_DEFINED_METADATA_NAME_PREFIX + name;
// Get, convert and save property value
Object value = customProperties.get(name);
if (value instanceof String) {
set(key, (String) value);
} else if (value instanceof Date) {
Property prop = Property.externalDate(key);
metadata.set(prop, (Date) value);
} else if (value instanceof Boolean) {
Property prop = Property.externalBoolean(key);
metadata.set(prop, value.toString());
} else if (value instanceof Long) {
Property prop = Property.externalInteger(key);
metadata.set(prop, ((Long) value).intValue());
} else if (value instanceof Double) {
Property prop = Property.externalReal(key);
metadata.set(prop, (Double) value);
} else if (value instanceof Integer) {
Property prop = Property.externalInteger(key);
metadata.set(prop, ((Integer) value).intValue());
}
}
}
}
private void set(String name, String value) {
if (value != null) {
metadata.set(name, value);
}
}
private void set(Property property, String value) {
if (value != null) {
metadata.set(property, value);
}
}
private void set(Property property, Date value) {
if (value != null) {
metadata.set(property, value);
}
}
private void set(Property property, int value) {
if (value > 0) {
metadata.set(property, value);
}
}
private void set(String name, long value) {
if (value > 0) {
metadata.set(name, Long.toString(value));
}
}
//MS stores values that should be multiple values (e.g. dc:creator)
//as a semicolon-delimited list. We need to split
//on semicolon to add each value.
public static void addMulti(Metadata metadata, Property property, String string) {
if (string == null) {
return;
}
String[] parts = string.split(";");
String[] current = metadata.getValues(property);
Set seen = new HashSet<>();
if (current != null) {
for (String val : current) {
seen.add(val);
}
}
for (String part : parts) {
if (! seen.contains(part)) {
metadata.add(property, part);
seen.add(part);
}
}
}
}
