コード例 #1
0
ファイル: HSLFSlideShow.java プロジェクト: aw1621107/hacks
  protected int addPersistentObject(PositionDependentRecord slideRecord) {
    slideRecord.setLastOnDiskOffset(HSLFSlideShowImpl.UNSET_OFFSET);
    _hslfSlideShow.appendRootLevelRecord((Record) slideRecord);

    // For position dependent records, hold where they were and now are
    // As we go along, update, and hand over, to any Position Dependent
    // records we happen across
    Map<RecordTypes.Type, PositionDependentRecord> interestingRecords =
        new HashMap<RecordTypes.Type, PositionDependentRecord>();

    try {
      _hslfSlideShow.updateAndWriteDependantRecords(null, interestingRecords);
    } catch (IOException e) {
      throw new HSLFException(e);
    }

    PersistPtrHolder ptr =
        (PersistPtrHolder) interestingRecords.get(RecordTypes.PersistPtrIncrementalBlock);
    UserEditAtom usr = (UserEditAtom) interestingRecords.get(RecordTypes.UserEditAtom);

    // persist ID is UserEditAtom.maxPersistWritten + 1
    int psrId = usr.getMaxPersistWritten() + 1;

    // Last view is now of the slide
    usr.setLastViewType((short) UserEditAtom.LAST_VIEW_SLIDE_VIEW);
    // increment the number of persistent objects
    usr.setMaxPersistWritten(psrId);

    // Add the new slide into the last PersistPtr
    // (Also need to tell it where it is)
    int slideOffset = slideRecord.getLastOnDiskOffset();
    slideRecord.setLastOnDiskOffset(slideOffset);
    ptr.addSlideLookup(psrId, slideOffset);
    logger.log(POILogger.INFO, "New slide/object ended up at " + slideOffset);

    return psrId;
  }
コード例 #2
0
ファイル: HSLFSlideShow.java プロジェクト: aw1621107/hacks
  /**
   * 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
      }
    }
  }