public static void main(String[] args) throws Exception {
if (args.length < 1) {
System.err.println("Need to give a filename");
System.exit(1);
}
HSLFSlideShow ss = new HSLFSlideShow(args[0]);
// Find the documents, and then their SLWT
Record[] records = ss.getRecords();
for (int i = 0; i < records.length; i++) {
if (records[i] instanceof Document) {
Record docRecord = records[i];
Record[] docChildren = docRecord.getChildRecords();
for (int j = 0; j < docChildren.length; j++) {
if (docChildren[j] instanceof SlideListWithText) {
System.out.println("Found SLWT at pos " + j + " in the Document at " + i);
System.out.println(" Has " + docChildren[j].getChildRecords().length + " children");
// Grab the SlideAtomSet's, which contain
// a SlidePersistAtom and then a bunch of text
// + related records
SlideListWithText slwt = (SlideListWithText) docChildren[j];
SlideListWithText.SlideAtomsSet[] thisSets = slwt.getSlideAtomsSets();
System.out.println(" Has " + thisSets.length + " AtomSets in it");
// Loop over the sets, showing what they contain
for (int k = 0; k < thisSets.length; k++) {
SlidePersistAtom spa = thisSets[k].getSlidePersistAtom();
System.out.println(" " + k + " has slide id " + spa.getSlideIdentifier());
System.out.println(" " + k + " has ref id " + spa.getRefID());
// Loop over the records, printing the text
Record[] slwtc = thisSets[k].getSlideRecords();
for (int l = 0; l < slwtc.length; l++) {
String text = null;
if (slwtc[l] instanceof TextBytesAtom) {
TextBytesAtom tba = (TextBytesAtom) slwtc[l];
text = tba.getText();
}
if (slwtc[l] instanceof TextCharsAtom) {
TextCharsAtom tca = (TextCharsAtom) slwtc[l];
text = tca.getText();
}
if (text != null) {
text = text.replace('\r', '\n');
System.out.println(" ''" + text + "''");
}
}
}
}
}
}
}
}
/**
* Use the PersistPtrHolder entries to figure out what is the "most recent" version of all the
* core records (Document, Notes, Slide etc), and save a record of them. Do this by walking from
* the oldest PersistPtr to the newest, overwriting any references found along the way with newer
* ones
*/
private void findMostRecentCoreRecords() {
// To start with, find the most recent in the byte offset domain
Map<Integer, Integer> mostRecentByBytes = new HashMap<Integer, Integer>();
for (Record record : _hslfSlideShow.getRecords()) {
if (record instanceof PersistPtrHolder) {
PersistPtrHolder pph = (PersistPtrHolder) record;
// If we've already seen any of the "slide" IDs for this
// PersistPtr, remove their old positions
int[] ids = pph.getKnownSlideIDs();
for (int id : ids) {
if (mostRecentByBytes.containsKey(id)) {
mostRecentByBytes.remove(id);
}
}
// Now, update the byte level locations with their latest values
Map<Integer, Integer> thisSetOfLocations = pph.getSlideLocationsLookup();
for (int id : ids) {
mostRecentByBytes.put(id, thisSetOfLocations.get(id));
}
}
}
// We now know how many unique special records we have, so init
// the array
_mostRecentCoreRecords = new Record[mostRecentByBytes.size()];
// We'll also want to be able to turn the slide IDs into a position
// in this array
_sheetIdToCoreRecordsLookup = new HashMap<Integer, Integer>();
Integer[] allIDs = mostRecentByBytes.keySet().toArray(new Integer[mostRecentByBytes.size()]);
Arrays.sort(allIDs);
for (int i = 0; i < allIDs.length; i++) {
_sheetIdToCoreRecordsLookup.put(allIDs[i], i);
}
Map<Integer, Integer> mostRecentByBytesRev =
new HashMap<Integer, Integer>(mostRecentByBytes.size());
for (Map.Entry<Integer, Integer> me : mostRecentByBytes.entrySet()) {
mostRecentByBytesRev.put(me.getValue(), me.getKey());
}
// Now convert the byte offsets back into record offsets
for (Record record : _hslfSlideShow.getRecords()) {
if (!(record instanceof PositionDependentRecord)) continue;
PositionDependentRecord pdr = (PositionDependentRecord) record;
int recordAt = pdr.getLastOnDiskOffset();
Integer thisID = mostRecentByBytesRev.get(recordAt);
if (thisID == null) continue;
// Bingo. Now, where do we store it?
int storeAt = _sheetIdToCoreRecordsLookup.get(thisID);
// Tell it its Sheet ID, if it cares
if (pdr instanceof PositionDependentRecordContainer) {
PositionDependentRecordContainer pdrc = (PositionDependentRecordContainer) record;
pdrc.setSheetId(thisID);
}
// Finally, save the record
_mostRecentCoreRecords[storeAt] = record;
}
// Now look for the interesting records in there
for (Record record : _mostRecentCoreRecords) {
// Check there really is a record at this number
if (record != null) {
// Find the Document, and interesting things in it
if (record.getRecordType() == RecordTypes.Document.typeID) {
_documentRecord = (Document) record;
_fonts = _documentRecord.getEnvironment().getFontCollection();
}
} else {
// No record at this number
// Odd, but not normally a problem
}
}
}
private byte[] writeRecord(Record r) throws Exception {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
r.writeOut(baos);
return baos.toByteArray();
}
