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am 26bd4609: Reading dictionary containing timestamps in Java Side. 

* commit '26bd46095a05843e7574dfcf7db53406f215525d':
  Reading dictionary containing timestamps in Java Side.
main
Keisuke Kuroyanagi 2014-01-29 03:34:52 -08:00 committed by Android Git Automerger
parent 28aa298a2c 26bd46095a
commit b18c22082b
9 changed files with 132 additions and 68 deletions
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6
java/src/com/android/inputmethod/latin/makedict/AbstractDictDecoder.java
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@ -48,7 +48,7 @@ public abstract class AbstractDictDecoder implements DictDecoder {
throw new UnsupportedFormatException("Unsupported version : " + version);
}
// TODO: Remove this field.
final int optionsFlags = HeaderReader.readOptionFlags(headerBuffer);
HeaderReader.readOptionFlags(headerBuffer);
final int headerSize = HeaderReader.readHeaderSize(headerBuffer);
if (headerSize < 0) {
throw new UnsupportedFormatException("header size can't be negative.");
@ -59,8 +59,8 @@ public abstract class AbstractDictDecoder implements DictDecoder {
final FileHeader header = new FileHeader(headerSize,
new FusionDictionary.DictionaryOptions(attributes),
new FormatOptions(version,
0 != (optionsFlags & FormatSpec.CONTAINS_TIMESTAMP_FLAG)));
new FormatOptions(version, FileHeader.ATTRIBUTE_VALUE_TRUE.equals(
attributes.get(FileHeader.HAS_HISTORICAL_INFO_ATTRIBUTE))));
return header;
}

1
java/src/com/android/inputmethod/latin/makedict/BinaryDictDecoderUtils.java
View File

@ -499,7 +499,6 @@ public final class BinaryDictDecoderUtils {
final int nodeArrayOriginPos = dictDecoder.getPosition();
do { // Scan the linked-list node.
final int nodeArrayHeadPos = dictDecoder.getPosition();
final int count = dictDecoder.readPtNodeCount();
int groupPos = dictDecoder.getPosition();
for (int i = count; i > 0; --i) { // Scan the array of PtNode.

11
java/src/com/android/inputmethod/latin/makedict/BinaryDictEncoderUtils.java
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@ -755,14 +755,6 @@ public class BinaryDictEncoderUtils {
return discretizedFrequency > 0 ? discretizedFrequency : 0;
}
/**
* Makes the 2-byte value for options flags. Unused at the moment, and always 0.
*/
private static final int makeOptionsValue(final FormatOptions formatOptions) {
// TODO: why doesn't this handle CONTAINS_TIMESTAMP_FLAG?
return 0;
}
/**
* Makes the flag value for a shortcut.
*
@ -949,7 +941,8 @@ public class BinaryDictEncoderUtils {
headerBuffer.write((byte) (0xFF & version));
// Options flags
final int options = makeOptionsValue(formatOptions);
// TODO: Remove this field.
final int options = 0;
headerBuffer.write((byte) (0xFF & (options >> 8)));
headerBuffer.write((byte) (0xFF & options));
final int headerSizeOffset = headerBuffer.size();

12
java/src/com/android/inputmethod/latin/makedict/FormatSpec.java
View File

@ -192,10 +192,6 @@ public final class FormatSpec {
static final int MINIMUM_SUPPORTED_VERSION = VERSION2;
static final int MAXIMUM_SUPPORTED_VERSION = VERSION4;
// These options need to be the same numeric values as the one in the native reading code.
// TODO: Make the native reading code read this variable.
static final int CONTAINS_TIMESTAMP_FLAG = 0x10;
// TODO: Make this value adaptative to content data, store it in the header, and
// use it in the reading code.
static final int MAX_WORD_LENGTH = Constants.DICTIONARY_MAX_WORD_LENGTH;
@ -249,26 +245,26 @@ public final class FormatSpec {
static final String TRIE_FILE_EXTENSION = ".trie";
public static final String HEADER_FILE_EXTENSION = ".header";
static final String FREQ_FILE_EXTENSION = ".freq";
static final String UNIGRAM_TIMESTAMP_FILE_EXTENSION = ".timestamp";
// tat = Terminal Address Table
static final String TERMINAL_ADDRESS_TABLE_FILE_EXTENSION = ".tat";
static final String BIGRAM_FILE_EXTENSION = ".bigram";
static final String SHORTCUT_FILE_EXTENSION = ".shortcut";
static final String LOOKUP_TABLE_FILE_SUFFIX = "_lookup";
static final String CONTENT_TABLE_FILE_SUFFIX = "_index";
static final int FLAGS_IN_FREQ_FILE_SIZE = 1;
static final int FREQUENCY_AND_FLAGS_SIZE = 2;
static final int TERMINAL_ADDRESS_TABLE_ADDRESS_SIZE = 3;
static final int UNIGRAM_TIMESTAMP_SIZE = 4;
static final int UNIGRAM_COUNTER_SIZE = 1;
static final int UNIGRAM_LEVEL_SIZE = 1;
// With the English main dictionary as of October 2013, the size of bigram address table is
// is 345KB with the block size being 16.
// This is 54% of that of full address table.
static final int BIGRAM_ADDRESS_TABLE_BLOCK_SIZE = 16;
static final int BIGRAM_CONTENT_COUNT = 2;
static final int BIGRAM_CONTENT_COUNT = 1;
static final int BIGRAM_FREQ_CONTENT_INDEX = 0;
static final int BIGRAM_TIMESTAMP_CONTENT_INDEX = 1;
static final String BIGRAM_FREQ_CONTENT_ID = "_freq";
static final String BIGRAM_TIMESTAMP_CONTENT_ID = "_timestamp";
static final int BIGRAM_TIMESTAMP_SIZE = 4;
static final int BIGRAM_COUNTER_SIZE = 1;
static final int BIGRAM_LEVEL_SIZE = 1;

1
java/src/com/android/inputmethod/latin/makedict/FusionDictionary.java
View File

@ -61,6 +61,7 @@ public final class FusionDictionary implements Iterable<Word> {
mData = new ArrayList<PtNode>();
}
public PtNodeArray(ArrayList<PtNode> data) {
Collections.sort(data, PTNODE_COMPARATOR);
mData = data;
}
}

69
java/src/com/android/inputmethod/latin/makedict/Ver4DictDecoder.java
View File

@ -143,7 +143,7 @@ public class Ver4DictDecoder extends AbstractDictDecoder {
mTerminalAddressTableBuffer = mBufferFactory.getDictionaryBuffer(
getFile(FILETYPE_TERMINAL_ADDRESS_TABLE));
mBigramReader = new BigramContentReader(mDictDirectory.getName(),
mDictDirectory, mBufferFactory, false);
mDictDirectory, mBufferFactory);
mBigramReader.openBuffers();
mShortcutReader = new ShortcutContentReader(mDictDirectory.getName(), mDictDirectory,
mBufferFactory);
@ -184,39 +184,24 @@ public class Ver4DictDecoder extends AbstractDictDecoder {
*/
protected static class BigramContentReader extends SparseTableContentReader {
public BigramContentReader(final String name, final File baseDir,
final DictionaryBufferFactory factory, final boolean hasTimestamp) {
final DictionaryBufferFactory factory) {
super(name + FormatSpec.BIGRAM_FILE_EXTENSION,
FormatSpec.BIGRAM_ADDRESS_TABLE_BLOCK_SIZE, baseDir,
getContentFilenames(name, hasTimestamp), getContentIds(hasTimestamp), factory);
getContentFilenames(name), getContentIds(), factory);
}
// TODO: Consolidate this method and BigramContentWriter.getContentFilenames.
protected static String[] getContentFilenames(final String name,
final boolean hasTimestamp) {
final String[] contentFilenames;
if (hasTimestamp) {
contentFilenames = new String[] { name + FormatSpec.BIGRAM_FILE_EXTENSION,
name + FormatSpec.BIGRAM_FILE_EXTENSION };
} else {
contentFilenames = new String[] { name + FormatSpec.BIGRAM_FILE_EXTENSION };
}
return contentFilenames;
protected static String[] getContentFilenames(final String name) {
return new String[] { name + FormatSpec.BIGRAM_FILE_EXTENSION };
}
// TODO: Consolidate this method and BigramContentWriter.getContentIds.
protected static String[] getContentIds(final boolean hasTimestamp) {
final String[] contentIds;
if (hasTimestamp) {
contentIds = new String[] { FormatSpec.BIGRAM_FREQ_CONTENT_ID,
FormatSpec.BIGRAM_TIMESTAMP_CONTENT_ID };
} else {
contentIds = new String[] { FormatSpec.BIGRAM_FREQ_CONTENT_ID };
}
return contentIds;
protected static String[] getContentIds() {
return new String[] { FormatSpec.BIGRAM_FREQ_CONTENT_ID };
}
public ArrayList<PendingAttribute> readTargetsAndFrequencies(final int terminalId,
final DictBuffer terminalAddressTableBuffer) {
final DictBuffer terminalAddressTableBuffer, final FormatOptions options) {
final ArrayList<PendingAttribute> bigrams = CollectionUtils.newArrayList();
read(FormatSpec.BIGRAM_FREQ_CONTENT_INDEX, terminalId,
new SparseTableContentReaderInterface() {
@ -226,14 +211,25 @@ public class Ver4DictDecoder extends AbstractDictDecoder {
// If bigrams.size() reaches FormatSpec.MAX_BIGRAMS_IN_A_PTNODE,
// remaining bigram entries are ignored.
final int bigramFlags = buffer.readUnsignedByte();
final int probability;
if (options.mHasTimestamp) {
probability = buffer.readUnsignedByte();
final int pos = buffer.position();
// Skip historical info.
buffer.position(pos + FormatSpec.BIGRAM_TIMESTAMP_SIZE
+ FormatSpec.BIGRAM_LEVEL_SIZE
+ FormatSpec.BIGRAM_COUNTER_SIZE);
} else {
probability = bigramFlags
& FormatSpec.FLAG_BIGRAM_SHORTCUT_ATTR_FREQUENCY;
}
final int targetTerminalId = buffer.readUnsignedInt24();
terminalAddressTableBuffer.position(targetTerminalId
* FormatSpec.TERMINAL_ADDRESS_TABLE_ADDRESS_SIZE);
final int targetAddress =
terminalAddressTableBuffer.readUnsignedInt24();
bigrams.add(new PendingAttribute(bigramFlags
& FormatSpec.FLAG_BIGRAM_SHORTCUT_ATTR_FREQUENCY,
targetAddress));
bigrams.add(new PendingAttribute(probability, targetAddress));
if (0 == (bigramFlags
& FormatSpec.FLAG_BIGRAM_SHORTCUT_ATTR_HAS_NEXT)) {
break;
@ -286,8 +282,19 @@ public class Ver4DictDecoder extends AbstractDictDecoder {
}
protected static class PtNodeReader extends AbstractDictDecoder.PtNodeReader {
protected static int readFrequency(final DictBuffer frequencyBuffer, final int terminalId) {
frequencyBuffer.position(terminalId * FormatSpec.FREQUENCY_AND_FLAGS_SIZE + 1);
protected static int readFrequency(final DictBuffer frequencyBuffer, final int terminalId,
final FormatOptions formatOptions) {
final int readingPos;
if (formatOptions.mHasTimestamp) {
final int entrySize = FormatSpec.FREQUENCY_AND_FLAGS_SIZE
+ FormatSpec.UNIGRAM_TIMESTAMP_SIZE + FormatSpec.UNIGRAM_LEVEL_SIZE
+ FormatSpec.UNIGRAM_COUNTER_SIZE;
readingPos = terminalId * entrySize + FormatSpec.FLAGS_IN_FREQ_FILE_SIZE;
} else {
readingPos = terminalId * FormatSpec.FREQUENCY_AND_FLAGS_SIZE
+ FormatSpec.FLAGS_IN_FREQ_FILE_SIZE;
}
frequencyBuffer.position(readingPos);
return frequencyBuffer.readUnsignedByte();
}
@ -354,12 +361,12 @@ public class Ver4DictDecoder extends AbstractDictDecoder {
}
@Override
public PtNodeInfo readPtNode(int ptNodePos, FormatOptions options) {
public PtNodeInfo readPtNode(final int ptNodePos, final FormatOptions options) {
final Ver4PtNodeInfo nodeInfo = readVer4PtNodeInfo(ptNodePos, options);
final int frequency;
if (0 != (FormatSpec.FLAG_IS_TERMINAL & nodeInfo.mFlags)) {
frequency = PtNodeReader.readFrequency(mFrequencyBuffer, nodeInfo.mTerminalId);
frequency = PtNodeReader.readFrequency(mFrequencyBuffer, nodeInfo.mTerminalId, options);
} else {
frequency = PtNode.NOT_A_TERMINAL;
}
@ -367,7 +374,7 @@ public class Ver4DictDecoder extends AbstractDictDecoder {
final ArrayList<WeightedString> shortcutTargets = mShortcutReader.readShortcuts(
nodeInfo.mTerminalId);
final ArrayList<PendingAttribute> bigrams = mBigramReader.readTargetsAndFrequencies(
nodeInfo.mTerminalId, mTerminalAddressTableBuffer);
nodeInfo.mTerminalId, mTerminalAddressTableBuffer, options);
return new PtNodeInfo(ptNodePos, ptNodePos + nodeInfo.mNodeSize, nodeInfo.mFlags,
nodeInfo.mCharacters, frequency, nodeInfo.mParentPos, nodeInfo.mChildrenPos,

52
tests/src/com/android/inputmethod/latin/BinaryDictionaryDecayingTests.java
View File

@ -21,7 +21,11 @@ import android.test.suitebuilder.annotation.LargeTest;
import android.util.Pair;
import com.android.inputmethod.latin.makedict.CodePointUtils;
import com.android.inputmethod.latin.makedict.DictDecoder;
import com.android.inputmethod.latin.makedict.FormatSpec;
import com.android.inputmethod.latin.makedict.FusionDictionary;
import com.android.inputmethod.latin.makedict.FusionDictionary.PtNode;
import com.android.inputmethod.latin.makedict.UnsupportedFormatException;
import com.android.inputmethod.latin.utils.FileUtils;
import java.io.File;
@ -98,6 +102,10 @@ public class BinaryDictionaryDecayingTests extends AndroidTestCase {
getContext().getCacheDir());
FileUtils.deleteRecursively(file);
Map<String, String> attributeMap = new HashMap<String, String>();
attributeMap.put(FormatSpec.FileHeader.DICTIONARY_ID_ATTRIBUTE, dictId);
attributeMap.put(FormatSpec.FileHeader.DICTIONARY_LOCALE_ATTRIBUTE, dictId);
attributeMap.put(FormatSpec.FileHeader.DICTIONARY_VERSION_ATTRIBUTE,
String.valueOf(TimeUnit.MILLISECONDS.toSeconds(System.currentTimeMillis())));
attributeMap.put(FormatSpec.FileHeader.USES_FORGETTING_CURVE_ATTRIBUTE,
FormatSpec.FileHeader.ATTRIBUTE_VALUE_TRUE);
attributeMap.put(FormatSpec.FileHeader.HAS_HISTORICAL_INFO_ATTRIBUTE,
@ -119,6 +127,50 @@ public class BinaryDictionaryDecayingTests extends AndroidTestCase {
return BinaryDictionary.setCurrentTimeForTest(-1);
}
public void testReadDictInJavaSide() {
testReadDictInJavaSide(FormatSpec.VERSION4);
}
private void testReadDictInJavaSide(final int formatVersion) {
setCurrentTimeForTestMode(mCurrentTime);
File dictFile = null;
try {
dictFile = createEmptyDictionaryAndGetFile("TestBinaryDictionary", formatVersion);
} catch (IOException e) {
fail("IOException while writing an initial dictionary : " + e);
}
BinaryDictionary binaryDictionary = new BinaryDictionary(dictFile.getAbsolutePath(),
0 /* offset */, dictFile.length(), true /* useFullEditDistance */,
Locale.getDefault(), TEST_LOCALE, true /* isUpdatable */);
addUnigramWord(binaryDictionary, "a", DUMMY_PROBABILITY);
addUnigramWord(binaryDictionary, "ab", DUMMY_PROBABILITY);
addUnigramWord(binaryDictionary, "aaa", DUMMY_PROBABILITY);
addBigramWords(binaryDictionary, "a", "aaa", DUMMY_PROBABILITY);
binaryDictionary.flushWithGC();
binaryDictionary.close();
final DictDecoder dictDecoder = FormatSpec.getDictDecoder(dictFile);
try {
final FusionDictionary dict = dictDecoder.readDictionaryBinary(null,
false /* deleteDictIfBroken */);
PtNode ptNode = FusionDictionary.findWordInTree(dict.mRootNodeArray, "a");
assertNotNull(ptNode);
assertTrue(ptNode.isTerminal());
assertNotNull(ptNode.getBigram("aaa"));
ptNode = FusionDictionary.findWordInTree(dict.mRootNodeArray, "ab");
assertNotNull(ptNode);
assertTrue(ptNode.isTerminal());
ptNode = FusionDictionary.findWordInTree(dict.mRootNodeArray, "aaa");
assertNotNull(ptNode);
assertTrue(ptNode.isTerminal());
} catch (IOException e) {
fail("IOException while reading dictionary: " + e);
} catch (UnsupportedFormatException e) {
fail("Unsupported format: " + e);
}
dictFile.delete();
}
public void testControlCurrentTime() {
testControlCurrentTime(FormatSpec.VERSION4);
}

29
tests/src/com/android/inputmethod/latin/makedict/BinaryDictDecoderEncoderTests.java
View File

@ -17,11 +17,11 @@
package com.android.inputmethod.latin.makedict;
import android.test.AndroidTestCase;
import android.test.MoreAsserts;
import android.test.suitebuilder.annotation.LargeTest;
import android.util.Log;
import android.util.SparseArray;
import com.android.inputmethod.latin.BinaryDictionary;
import com.android.inputmethod.latin.makedict.BinaryDictDecoderUtils.CharEncoding;
import com.android.inputmethod.latin.makedict.BinaryDictDecoderUtils.DictBuffer;
import com.android.inputmethod.latin.makedict.FormatSpec.FileHeader;
@ -76,6 +76,7 @@ public class BinaryDictDecoderEncoderTests extends AndroidTestCase {
public BinaryDictDecoderEncoderTests(final long seed, final int maxUnigrams) {
super();
BinaryDictionary.setCurrentTimeForTest(0);
Log.e(TAG, "Testing dictionary: seed is " + seed);
final Random random = new Random(seed);
sWords.clear();
@ -262,7 +263,7 @@ public class BinaryDictDecoderEncoderTests extends AndroidTestCase {
getContext().getCacheDir());
final FusionDictionary dict = new FusionDictionary(new PtNodeArray(),
BinaryDictUtils.makeDictionaryOptions(dictName, dictVersion));
BinaryDictUtils.makeDictionaryOptions(dictName, dictVersion, formatOptions));
addUnigrams(words.size(), dict, words, shortcuts);
addBigrams(dict, words, bigrams);
checkDictionary(dict, words, bigrams, shortcuts);
@ -317,7 +318,6 @@ public class BinaryDictDecoderEncoderTests extends AndroidTestCase {
BinaryDictUtils.VERSION4_OPTIONS_WITHOUT_TIMESTAMP);
runReadAndWriteTests(results, BinaryDictUtils.USE_BYTE_BUFFER,
BinaryDictUtils.VERSION4_OPTIONS_WITH_TIMESTAMP);
for (final String result : results) {
Log.d(TAG, result);
}
@ -344,15 +344,17 @@ public class BinaryDictDecoderEncoderTests extends AndroidTestCase {
final SparseArray<List<Integer>> expectedBigrams,
final TreeMap<Integer, String> resultWords,
final TreeMap<Integer, Integer> resultFrequencies,
final TreeMap<Integer, ArrayList<PendingAttribute>> resultBigrams) {
final TreeMap<Integer, ArrayList<PendingAttribute>> resultBigrams,
final boolean checkProbability) {
// check unigrams
final Set<String> actualWordsSet = new HashSet<String>(resultWords.values());
final Set<String> expectedWordsSet = new HashSet<String>(expectedWords);
assertEquals(actualWordsSet, expectedWordsSet);
if (checkProbability) {
for (int freq : resultFrequencies.values()) {
assertEquals(freq, UNIGRAM_FREQ);
}
}
// check bigrams
final HashMap<String, Set<String>> expBigrams = new HashMap<String, Set<String>>();
@ -377,16 +379,19 @@ public class BinaryDictDecoderEncoderTests extends AndroidTestCase {
}
actBigrams.get(word1).add(word2);
if (checkProbability) {
final int bigramFreq = BinaryDictIOUtils.reconstructBigramFrequency(
unigramFreq, attr.mFrequency);
assertTrue(Math.abs(bigramFreq - BIGRAM_FREQ) < TOLERANCE_OF_BIGRAM_FREQ);
}
}
}
assertEquals(actBigrams, expBigrams);
}
private long timeAndCheckReadUnigramsAndBigramsBinary(final File file, final List<String> words,
final SparseArray<List<Integer>> bigrams, final int bufferType) {
final SparseArray<List<Integer>> bigrams, final int bufferType,
final boolean checkProbability) {
final TreeMap<Integer, String> resultWords = CollectionUtils.newTreeMap();
final TreeMap<Integer, ArrayList<PendingAttribute>> resultBigrams =
CollectionUtils.newTreeMap();
@ -404,7 +409,7 @@ public class BinaryDictDecoderEncoderTests extends AndroidTestCase {
Log.e(TAG, "UnsupportedFormatException", e);
}
checkWordMap(words, bigrams, resultWords, resultFreqs, resultBigrams);
checkWordMap(words, bigrams, resultWords, resultFreqs, resultBigrams, checkProbability);
return diff;
}
@ -418,13 +423,17 @@ public class BinaryDictDecoderEncoderTests extends AndroidTestCase {
// making the dictionary from lists of words.
final FusionDictionary dict = new FusionDictionary(new PtNodeArray(),
BinaryDictUtils.makeDictionaryOptions(dictName, dictVersion));
BinaryDictUtils.makeDictionaryOptions(dictName, dictVersion, formatOptions));
addUnigrams(words.size(), dict, words, null /* shortcutMap */);
addBigrams(dict, words, bigrams);
timeWritingDictToFile(file, dict, formatOptions);
long wordMap = timeAndCheckReadUnigramsAndBigramsBinary(file, words, bigrams, bufferType);
// Caveat: Currently, the Java code to read a v4 dictionary doesn't calculate the
// probability when there's a timestamp for the entry.
// TODO: Abandon the Java code, and implement the v4 dictionary reading code in native.
long wordMap = timeAndCheckReadUnigramsAndBigramsBinary(file, words, bigrams, bufferType,
!formatOptions.mHasTimestamp /* checkProbability */);
long fullReading = timeReadingAndCheckDict(file, words, bigrams, null /* shortcutMap */,
bufferType);
@ -517,7 +526,7 @@ public class BinaryDictDecoderEncoderTests extends AndroidTestCase {
getContext().getCacheDir());
final FusionDictionary dict = new FusionDictionary(new PtNodeArray(),
BinaryDictUtils.makeDictionaryOptions(dictName, dictVersion));
BinaryDictUtils.makeDictionaryOptions(dictName, dictVersion, formatOptions));
addUnigrams(sWords.size(), dict, sWords, null /* shortcutMap */);
addBigrams(dict, words, bigrams);
timeWritingDictToFile(file, dict, formatOptions);

9
tests/src/com/android/inputmethod/latin/makedict/BinaryDictUtils.java
View File

@ -36,11 +36,18 @@ public class BinaryDictUtils {
public static final FormatSpec.FormatOptions VERSION4_OPTIONS_WITH_TIMESTAMP =
new FormatSpec.FormatOptions(FormatSpec.VERSION4, true /* hasTimestamp */);
public static DictionaryOptions makeDictionaryOptions(final String id, final String version) {
public static DictionaryOptions makeDictionaryOptions(final String id, final String version,
final FormatSpec.FormatOptions formatOptions) {
final DictionaryOptions options = new DictionaryOptions(new HashMap<String, String>());
options.mAttributes.put(FileHeader.DICTIONARY_LOCALE_ATTRIBUTE, "en_US");
options.mAttributes.put(FileHeader.DICTIONARY_ID_ATTRIBUTE, id);
options.mAttributes.put(FileHeader.DICTIONARY_VERSION_ATTRIBUTE, version);
if (formatOptions.mHasTimestamp) {
options.mAttributes.put(FileHeader.HAS_HISTORICAL_INFO_ATTRIBUTE,
FileHeader.ATTRIBUTE_VALUE_TRUE);
options.mAttributes.put(FileHeader.USES_FORGETTING_CURVE_ATTRIBUTE,
FileHeader.ATTRIBUTE_VALUE_TRUE);
}
return options;
}