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The Apache Commons Codec package contains simple encoder and decoders for
various formats such as Base64 and Hexadecimal. In addition to these
widely used encoders and decoders, the codec package also maintains a
collection of phonetic encoding utilities.
/* ====================================================================
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.poi.hpsf.extractor;
import org.apache.poi.POIDocument;
import org.apache.poi.extractor.POIOLE2TextExtractor;
import org.apache.poi.extractor.POITextExtractor;
import org.apache.poi.hpsf.CustomProperties;
import org.apache.poi.hpsf.DocumentSummaryInformation;
import org.apache.poi.hpsf.HPSFPropertiesOnlyDocument;
import org.apache.poi.hpsf.Property;
import org.apache.poi.hpsf.PropertySet;
import org.apache.poi.hpsf.SummaryInformation;
import org.apache.poi.hpsf.wellknown.PropertyIDMap;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
/**
* Extracts all of the HPSF properties, both
* build in and custom, returning them in
* textual form.
*/
public class HPSFPropertiesExtractor implements POIOLE2TextExtractor {
private final POIDocument document;
private boolean doCloseFilesystem = true;
public HPSFPropertiesExtractor(POIOLE2TextExtractor mainExtractor) {
document = mainExtractor.getDocument();
}
public HPSFPropertiesExtractor(POIDocument document) {
this.document = document;
}
public HPSFPropertiesExtractor(POIFSFileSystem fs) {
document = new HPSFPropertiesOnlyDocument(fs);
}
public String getDocumentSummaryInformationText() {
if(document == null) { // event based extractor does not have a document
return "";
}
DocumentSummaryInformation dsi = document.getDocumentSummaryInformation();
StringBuilder text = new StringBuilder();
// Normal properties
text.append( getPropertiesText(dsi) );
// Now custom ones
CustomProperties cps = dsi == null ? null : dsi.getCustomProperties();
if (cps != null) {
for (String key : cps.nameSet()) {
String val = getPropertyValueText(cps.get(key));
text.append(key).append(" = ").append(val).append("\n");
}
}
// All done
return text.toString();
}
public String getSummaryInformationText() {
if(document == null) { // event based extractor does not have a document
return "";
}
SummaryInformation si = document.getSummaryInformation();
// Just normal properties
return getPropertiesText(si);
}
private static String getPropertiesText(PropertySet ps) {
if (ps == null) {
// Not defined, oh well
return "";
}
StringBuilder text = new StringBuilder();
PropertyIDMap idMap = ps.getPropertySetIDMap();
Property[] props = ps.getProperties();
for (Property prop : props) {
String type = Long.toString(prop.getID());
Object typeObj = (idMap == null) ? null : idMap.get(prop.getID());
if (typeObj != null) {
type = typeObj.toString();
}
String val = getPropertyValueText(prop.getValue());
text.append(type).append(" = ").append(val).append("\n");
}
return text.toString();
}
/**
* @return the text of all the properties defined in
* the document.
*/
public String getText() {
return getSummaryInformationText() + getDocumentSummaryInformationText();
}
/**
* Prevent recursion!
*/
public POITextExtractor getMetadataTextExtractor() {
throw new IllegalStateException("You already have the Metadata Text Extractor, not recursing!");
}
private static String getPropertyValueText(Object val) {
return (val == null)
? "(not set)"
: PropertySet.getPropertyStringValue(val);
}
@Override
public boolean equals(Object o) {
return super.equals(o);
}
@Override
public int hashCode() {
return super.hashCode();
}
@Override
public POIDocument getDocument() {
return document;
}
@Override
public void setCloseFilesystem(boolean doCloseFilesystem) {
this.doCloseFilesystem = doCloseFilesystem;
}
@Override
public boolean isCloseFilesystem() {
return doCloseFilesystem;
}
@Override
public POIDocument getFilesystem() {
return document;
}
}