/*
* 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.odf;
import org.apache.tika.metadata.Metadata;
import org.apache.tika.parser.xml.AttributeDependantMetadataHandler;
import org.apache.tika.parser.xml.DcXMLParser;
import org.apache.tika.parser.xml.MetadataHandler;
import org.apache.tika.sax.TeeContentHandler;
import org.apache.tika.sax.xpath.CompositeMatcher;
import org.apache.tika.sax.xpath.Matcher;
import org.apache.tika.sax.xpath.MatchingContentHandler;
import org.apache.tika.sax.xpath.XPathParser;
import org.xml.sax.ContentHandler;
/**
* Parser for OpenDocument <code>meta.xml</code> files.
*/
public class OpenDocumentMetaParser extends DcXMLParser {
private static final XPathParser META_XPATH = new XPathParser(
"meta", "urn:oasis:names:tc:opendocument:xmlns:meta:1.0");
// eg <meta:user-defined meta:name="Info1">Text1</meta:user-defined> becomes custom:Info1=Text1
public static final String USER_DEFINED_METADATA_NAME_PREFIX = "custom:";
private static ContentHandler getMeta(
ContentHandler ch, Metadata md, String name, String element) {
Matcher matcher = new CompositeMatcher(
META_XPATH.parse("//meta:" + element),
META_XPATH.parse("//meta:" + element + "//text()"));
ContentHandler branch =
new MatchingContentHandler(new MetadataHandler(md, name), matcher);
return new TeeContentHandler(ch, branch);
}
private static ContentHandler getUserDefined(
ContentHandler ch, Metadata md) {
Matcher matcher = new CompositeMatcher(
META_XPATH.parse("//meta:user-defined/@meta:name"),
META_XPATH.parse("//meta:user-defined//text()"));
ContentHandler branch = new MatchingContentHandler(
new AttributeDependantMetadataHandler(md, "meta:name", USER_DEFINED_METADATA_NAME_PREFIX),
matcher);
return new TeeContentHandler(ch, branch);
}
private static ContentHandler getStatistic(
ContentHandler ch, Metadata md, String name, String attribute) {
Matcher matcher =
META_XPATH.parse("//meta:document-statistic/@meta:" + attribute);
ContentHandler branch =
new MatchingContentHandler(new MetadataHandler(md, name), matcher);
return new TeeContentHandler(ch, branch);
}
protected ContentHandler getContentHandler(ContentHandler ch, Metadata md) {
// Process the Dublin Core Attributes
ch = super.getContentHandler(ch, md);
// Process the OO Meta Attributes
ch = getMeta(ch, md, Metadata.CREATION_DATE, "creation-date");
ch = getMeta(ch, md, Metadata.KEYWORDS, "keyword");
ch = getMeta(ch, md, Metadata.EDIT_TIME, "editing-duration");
ch = getMeta(ch, md, "editing-cycles", "editing-cycles");
ch = getMeta(ch, md, "initial-creator", "initial-creator");
ch = getMeta(ch, md, "generator", "generator");
// Process the user defined Meta Attributes
ch = getUserDefined(ch, md);
// Process the OO Statistics Attributes
ch = getStatistic(ch, md, "nbTab", "table-count");
ch = getStatistic(ch, md, "nbObject", "object-count");
ch = getStatistic(ch, md, "nbImg", "image-count");
ch = getStatistic(ch, md, "nbPage", "page-count");
ch = getStatistic(ch, md, "nbPara", "paragraph-count");
ch = getStatistic(ch, md, "nbWord", "word-count");
ch = getStatistic(ch, md, "nbCharacter", "character-count");
ch = new NSNormalizerContentHandler(ch);
return ch;
}
}