Examples with PersistRecord org.apache.poi.hslf.record.PersistRecord used on opensource projects

Example 1 with PersistRecord

use of org.apache.poi.hslf.record.PersistRecord in project poi by apache.

the class HSLFSlideShowImpl method read.

private Record[] read(byte[] docstream, int usrOffset) throws IOException {
    //sort found records by offset.
    //(it is not necessary but SlideShow.findMostRecentCoreRecords() expects them sorted)
    // offset -> record
    NavigableMap<Integer, Record> records = new TreeMap<Integer, Record>();
    // offset -> persistId
    Map<Integer, Integer> persistIds = new HashMap<Integer, Integer>();
    initRecordOffsets(docstream, usrOffset, records, persistIds);
    HSLFSlideShowEncrypted decryptData = new HSLFSlideShowEncrypted(docstream, records);
    for (Map.Entry<Integer, Record> entry : records.entrySet()) {
        Integer offset = entry.getKey();
        Record record = entry.getValue();
        Integer persistId = persistIds.get(offset);
        if (record == null) {
            // all plain records have been already added,
            // only new records need to be decrypted (tbd #35897)
            decryptData.decryptRecord(docstream, persistId, offset);
            record = Record.buildRecordAtOffset(docstream, offset);
            entry.setValue(record);
        }
        if (record instanceof PersistRecord) {
            ((PersistRecord) record).setPersistId(persistId);
        }
    }
    decryptData.close();
    return records.values().toArray(new Record[records.size()]);
}