/*
* 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.ooxml;
import java.math.BigDecimal;
import java.util.Date;
import org.apache.poi.POIXMLTextExtractor;
import org.apache.poi.POIXMLProperties.CoreProperties;
import org.apache.poi.POIXMLProperties.CustomProperties;
import org.apache.poi.POIXMLProperties.ExtendedProperties;
import org.apache.poi.openxml4j.opc.internal.PackagePropertiesPart;
import org.apache.poi.openxml4j.util.Nullable;
import org.apache.poi.xssf.extractor.XSSFEventBasedExcelExtractor;
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.openxmlformats.schemas.officeDocument.x2006.customProperties.CTProperty;
import org.openxmlformats.schemas.officeDocument.x2006.extendedProperties.CTProperties;
/**
* OOXML metadata extractor.
*
* Currently POI doesn't support metadata extraction for OOXML.
*
* @see OOXMLExtractor#getMetadataExtractor()
*/
public class MetadataExtractor {
private final POIXMLTextExtractor extractor;
public MetadataExtractor(POIXMLTextExtractor extractor) {
this.extractor = extractor;
}
public void extract(Metadata metadata) throws TikaException {
if (extractor.getDocument() != null ||
(extractor instanceof XSSFEventBasedExcelExtractor &&
extractor.getPackage() != null)) {
extractMetadata(extractor.getCoreProperties(), metadata);
extractMetadata(extractor.getExtendedProperties(), metadata);
extractMetadata(extractor.getCustomProperties(), metadata);
}
}
private void extractMetadata(CoreProperties properties, Metadata metadata) {
PackagePropertiesPart propsHolder = properties
.getUnderlyingProperties();
addProperty(metadata, OfficeOpenXMLCore.CATEGORY, propsHolder.getCategoryProperty());
addProperty(metadata, OfficeOpenXMLCore.CONTENT_STATUS, propsHolder
.getContentStatusProperty());
addProperty(metadata, TikaCoreProperties.CREATED, propsHolder
.getCreatedProperty());
addProperty(metadata, TikaCoreProperties.CREATOR, propsHolder
.getCreatorProperty());
addProperty(metadata, TikaCoreProperties.DESCRIPTION, propsHolder
.getDescriptionProperty());
addProperty(metadata, TikaCoreProperties.IDENTIFIER, propsHolder
.getIdentifierProperty());
addProperty(metadata, TikaCoreProperties.KEYWORDS, propsHolder
.getKeywordsProperty());
addProperty(metadata, TikaCoreProperties.LANGUAGE, propsHolder
.getLanguageProperty());
addProperty(metadata, TikaCoreProperties.MODIFIER, propsHolder
.getLastModifiedByProperty());
addProperty(metadata, TikaCoreProperties.PRINT_DATE, propsHolder
.getLastPrintedProperty());
addProperty(metadata, Metadata.LAST_MODIFIED, propsHolder
.getModifiedProperty());
addProperty(metadata, TikaCoreProperties.MODIFIED, propsHolder
.getModifiedProperty());
addProperty(metadata, OfficeOpenXMLCore.REVISION, propsHolder
.getRevisionProperty());
// TODO: Move to OO subject in Tika 2.0
addProperty(metadata, TikaCoreProperties.TRANSITION_SUBJECT_TO_OO_SUBJECT,
propsHolder.getSubjectProperty());
addProperty(metadata, TikaCoreProperties.TITLE, propsHolder.getTitleProperty());
addProperty(metadata, OfficeOpenXMLCore.VERSION, propsHolder.getVersionProperty());
// Legacy Tika-1.0 style stats
// TODO Remove these in Tika 2.0
addProperty(metadata, Metadata.CATEGORY, propsHolder.getCategoryProperty());
addProperty(metadata, Metadata.CONTENT_STATUS, propsHolder
.getContentStatusProperty());
addProperty(metadata, Metadata.REVISION_NUMBER, propsHolder
.getRevisionProperty());
addProperty(metadata, Metadata.VERSION, propsHolder.getVersionProperty());
}
private void extractMetadata(ExtendedProperties properties,
Metadata metadata) {
CTProperties propsHolder = properties.getUnderlyingProperties();
addProperty(metadata, OfficeOpenXMLExtended.APPLICATION, propsHolder.getApplication());
addProperty(metadata, OfficeOpenXMLExtended.APP_VERSION, propsHolder.getAppVersion());
addProperty(metadata, TikaCoreProperties.PUBLISHER, propsHolder.getCompany());
addProperty(metadata, OfficeOpenXMLExtended.COMPANY, propsHolder.getCompany());
addProperty(metadata, OfficeOpenXMLExtended.MANAGER, propsHolder.getManager());
addProperty(metadata, OfficeOpenXMLExtended.NOTES, propsHolder.getNotes());
addProperty(metadata, OfficeOpenXMLExtended.PRESENTATION_FORMAT, propsHolder.getPresentationFormat());
addProperty(metadata, OfficeOpenXMLExtended.TEMPLATE, propsHolder.getTemplate());
addProperty(metadata, OfficeOpenXMLExtended.TOTAL_TIME, propsHolder.getTotalTime());
if (propsHolder.getPages() > 0) {
metadata.set(PagedText.N_PAGES, propsHolder.getPages());
} else if (propsHolder.getSlides() > 0) {
metadata.set(PagedText.N_PAGES, propsHolder.getSlides());
}
// Process the document statistics
addProperty(metadata, Office.PAGE_COUNT, propsHolder.getPages());
addProperty(metadata, Office.SLIDE_COUNT, propsHolder.getSlides());
addProperty(metadata, Office.PARAGRAPH_COUNT, propsHolder.getParagraphs());
addProperty(metadata, Office.LINE_COUNT, propsHolder.getLines());
addProperty(metadata, Office.WORD_COUNT, propsHolder.getWords());
addProperty(metadata, Office.CHARACTER_COUNT, propsHolder.getCharacters());
addProperty(metadata, Office.CHARACTER_COUNT_WITH_SPACES, propsHolder.getCharactersWithSpaces());
// Legacy Tika-1.0 style stats
// TODO Remove these in Tika 2.0
addProperty(metadata, Metadata.APPLICATION_NAME, propsHolder.getApplication());
addProperty(metadata, Metadata.APPLICATION_VERSION, propsHolder.getAppVersion());
addProperty(metadata, Metadata.MANAGER, propsHolder.getManager());
addProperty(metadata, Metadata.NOTES, propsHolder.getNotes());
addProperty(metadata, Metadata.PRESENTATION_FORMAT, propsHolder.getPresentationFormat());
addProperty(metadata, Metadata.TEMPLATE, propsHolder.getTemplate());
addProperty(metadata, Metadata.TOTAL_TIME, propsHolder.getTotalTime());
addProperty(metadata, MSOffice.PAGE_COUNT, propsHolder.getPages());
addProperty(metadata, MSOffice.SLIDE_COUNT, propsHolder.getSlides());
addProperty(metadata, MSOffice.PARAGRAPH_COUNT, propsHolder.getParagraphs());
addProperty(metadata, MSOffice.LINE_COUNT, propsHolder.getLines());
addProperty(metadata, MSOffice.WORD_COUNT, propsHolder.getWords());
addProperty(metadata, MSOffice.CHARACTER_COUNT, propsHolder.getCharacters());
addProperty(metadata, MSOffice.CHARACTER_COUNT_WITH_SPACES, propsHolder.getCharactersWithSpaces());
}
private void extractMetadata(CustomProperties properties,
Metadata metadata) {
org.openxmlformats.schemas.officeDocument.x2006.customProperties.CTProperties
props = properties.getUnderlyingProperties();
for(CTProperty property : props.getPropertyList()) {
String val = null;
Date date = null;
if (property.isSetLpwstr()) {
val = property.getLpwstr();
}
else if (property.isSetLpstr()) {
val = property.getLpstr();
}
else if (property.isSetDate()) {
date = property.getDate().getTime();
}
else if (property.isSetFiletime()) {
date = property.getFiletime().getTime();
}
else if (property.isSetBool()) {
val = Boolean.toString( property.getBool() );
}
// Integers
else if (property.isSetI1()) {
val = Integer.toString(property.getI1());
}
else if (property.isSetI2()) {
val = Integer.toString(property.getI2());
}
else if (property.isSetI4()) {
val = Integer.toString(property.getI4());
}
else if (property.isSetI8()) {
val = Long.toString(property.getI8());
}
else if (property.isSetInt()) {
val = Integer.toString( property.getInt() );
}
// Unsigned Integers
else if (property.isSetUi1()) {
val = Integer.toString(property.getUi1());
}
else if (property.isSetUi2()) {
val = Integer.toString(property.getUi2());
}
else if (property.isSetUi4()) {
val = Long.toString(property.getUi4());
}
else if (property.isSetUi8()) {
val = property.getUi8().toString();
}
else if (property.isSetUint()) {
val = Long.toString(property.getUint());
}
// Reals
else if (property.isSetR4()) {
val = Float.toString( property.getR4() );
}
else if (property.isSetR8()) {
val = Double.toString( property.getR8() );
}
else if (property.isSetDecimal()) {
BigDecimal d = property.getDecimal();
if (d == null) {
val = null;
} else {
val = d.toPlainString();
}
}
else if (property.isSetArray()) {
// TODO Fetch the array values and output
}
else if (property.isSetVector()) {
// TODO Fetch the vector values and output
}
else if (property.isSetBlob() || property.isSetOblob()) {
// TODO Decode, if possible
}
else if (property.isSetStream() || property.isSetOstream() ||
property.isSetVstream()) {
// TODO Decode, if possible
}
else if (property.isSetStorage() || property.isSetOstorage()) {
// TODO Decode, if possible
}
else {
// This type isn't currently supported yet, skip the property
}
String propName = "custom:" + property.getName();
if (date != null) {
Property tikaProp = Property.externalDate(propName);
metadata.set(tikaProp, date);
} else if (val != null) {
metadata.set(propName, val);
}
}
}
private <T> void addProperty(Metadata metadata, Property property, Nullable<T> nullableValue) {
T value = nullableValue.getValue();
if (value != null) {
if (value instanceof Date) {
metadata.set(property, (Date) value);
} else if (value instanceof String) {
metadata.set(property, (String) value);
} else if (value instanceof Integer) {
metadata.set(property, (Integer) value);
} else if (value instanceof Double) {
metadata.set(property, (Double) value);
}
}
}
private void addProperty(Metadata metadata, String name, Nullable<?> value) {
if (value.getValue() != null) {
addProperty(metadata, name, value.getValue().toString());
}
}
private void addProperty(Metadata metadata, Property property, String value) {
if (value != null) {
metadata.set(property, value);
}
}
private void addProperty(Metadata metadata, String name, String value) {
if (value != null) {
metadata.set(name, value);
}
}
private void addProperty(Metadata metadata, Property property, int value) {
if (value > 0) {
metadata.set(property, value);
}
}
private void addProperty(Metadata metadata, String name, int value) {
if (value > 0) {
metadata.set(name, Integer.toString(value));
}
}
}