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1 package org.apache.slide.extractor;
2
3 import java.io.InputStream  ;
4 import java.util.*;
5
6 import org.apache.poi.hpsf.*;
7 import org.apache.poi.poifs.eventfilesystem.*;
8 import org.apache.slide.util.conf.Configurable;
9 import org.apache.slide.util.conf.Configuration;
10 import org.apache.slide.util.conf.ConfigurationException;
11
12
16 public class OfficeExtractor extends AbstractPropertyExtractor implements Configurable {
17 protected List instructions = new ArrayList();
18 protected Map propertyMap = new HashMap();
19
20 public OfficeExtractor(String uri, String contentType, String namespace) {
21 super(uri, contentType, namespace);
22 }
23
24 public Map extract(InputStream content) throws ExtractorException {
25 OfficePropertiesListener listener = new OfficePropertiesListener();
26 try {
27 POIFSReader r = new POIFSReader();
28 r.registerListener(listener);
29 r.read(content);
30 } catch (Exception e) {
31 throw new ExtractorException("Exception while extracting properties in OfficeExtractor");
32 }
33 return listener.getProperties();
34 }
35
36 class OfficePropertiesListener implements POIFSReaderListener {
37
38 private HashMap properties = new HashMap();
39
40 public Map getProperties() {
41 return properties;
42 }
43
44 public void processPOIFSReaderEvent(POIFSReaderEvent event) {
45 PropertySet ps = null;
46 try {
47 ps = PropertySetFactory.create(event.getStream());
48 } catch (NoPropertySetStreamException ex) {
49 return;
50 } catch (Exception ex) {
51 throw new RuntimeException ("Property set stream \"" + event.getPath() + event.getName() + "\": " + ex);
52 }
53 String eventName = event.getName().trim();
54 final long sectionCount = ps.getSectionCount();
55 List sections = ps.getSections();
56 int nr = 0;
57 for (Iterator i = sections.iterator(); i.hasNext();) {
58 Section sec = (Section) i.next();
59 int propertyCount = sec.getPropertyCount();
60 Property[] props = sec.getProperties();
61 for (int i2 = 0; i2 < props.length; i2++) {
62 Property p = props[i2];
63 int id = p.getID();
64 long type = p.getType();
65 Object value = p.getValue();
66 String key = eventName + "-" + nr + "-" + id;
67 if ( propertyMap.containsKey(key) ) {
68 properties.put(propertyMap.get(key), value);
69 }
70 }
71 }
72 }
73 }
74
75 public void configure(Configuration configuration) throws ConfigurationException {
76 Enumeration instructions = configuration.getConfigurations("instruction");
77 while (instructions.hasMoreElements()) {
78 Configuration extract = (Configuration)instructions.nextElement();
79 String property = extract.getAttribute("property");
80 String id = extract.getAttribute("id");
81 propertyMap.put(id, property);
82 }
83 }
84 } |
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