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Make readPtNode be called with the address from the beginning of the file. 

Change-Id: I8939fdfb4f79e55bcd7393633784effb30df3f8f
main
Yuichiro Hanada 2013-08-21 15:27:36 +09:00
parent f739807a3f
commit 558e34c7bd
6 changed files with 51 additions and 52 deletions
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75
java/src/com/android/inputmethod/latin/makedict/BinaryDictDecoderUtils.java
View File

@ -31,7 +31,6 @@ import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Map;
import java.util.TreeMap;
@ -334,40 +333,38 @@ public final class BinaryDictDecoderUtils {
}
/**
* Finds, as a string, the word at the address passed as an argument.
* Finds, as a string, the word at the position passed as an argument.
*
* @param dictDecoder the dict decoder.
* @param headerSize the size of the header.
* @param address the address to seek.
* @param pos the position to seek.
* @param formatOptions file format options.
* @return the word with its frequency, as a weighted string.
*/
/* package for tests */ static WeightedString getWordAtAddress(
final Ver3DictDecoder dictDecoder, final int headerSize, final int address,
/* package for tests */ static WeightedString getWordAtPosition(
final Ver3DictDecoder dictDecoder, final int headerSize, final int pos,
final FormatOptions formatOptions) {
final DictBuffer dictBuffer = dictDecoder.getDictBuffer();
final WeightedString result;
final int originalPointer = dictBuffer.position();
dictBuffer.position(address);
final int originalPos = dictBuffer.position();
dictBuffer.position(pos);
if (BinaryDictIOUtils.supportsDynamicUpdate(formatOptions)) {
result = getWordAtAddressWithParentAddress(dictDecoder, headerSize, address,
formatOptions);
result = getWordAtPositionWithParentAddress(dictDecoder, pos, formatOptions);
} else {
result = getWordAtAddressWithoutParentAddress(dictDecoder, headerSize, address,
result = getWordAtPositionWithoutParentAddress(dictDecoder, headerSize, pos,
formatOptions);
}
dictBuffer.position(originalPointer);
dictBuffer.position(originalPos);
return result;
}
@SuppressWarnings("unused")
private static WeightedString getWordAtAddressWithParentAddress(
final Ver3DictDecoder dictDecoder, final int headerSize, final int address,
final FormatOptions options) {
private static WeightedString getWordAtPositionWithParentAddress(
final Ver3DictDecoder dictDecoder, final int pos, final FormatOptions options) {
final DictBuffer dictBuffer = dictDecoder.getDictBuffer();
int currentAddress = address;
int currentPos = pos;
int frequency = Integer.MIN_VALUE;
final StringBuilder builder = new StringBuilder();
// the length of the path from the root to the leaf is limited by MAX_WORD_LENGTH
@ -375,10 +372,10 @@ public final class BinaryDictDecoderUtils {
CharGroupInfo currentInfo;
int loopCounter = 0;
do {
dictBuffer.position(currentAddress + headerSize);
currentInfo = dictDecoder.readPtNode(currentAddress, options);
dictBuffer.position(currentPos);
currentInfo = dictDecoder.readPtNode(currentPos, options);
if (BinaryDictIOUtils.isMovedGroup(currentInfo.mFlags, options)) {
currentAddress = currentInfo.mParentAddress + currentInfo.mOriginalAddress;
currentPos = currentInfo.mParentAddress + currentInfo.mOriginalAddress;
}
if (DBG && loopCounter++ > MAX_JUMPS) {
MakedictLog.d("Too many jumps - probably a bug");
@ -388,37 +385,37 @@ public final class BinaryDictDecoderUtils {
builder.insert(0,
new String(currentInfo.mCharacters, 0, currentInfo.mCharacters.length));
if (currentInfo.mParentAddress == FormatSpec.NO_PARENT_ADDRESS) break;
currentAddress = currentInfo.mParentAddress + currentInfo.mOriginalAddress;
currentPos = currentInfo.mParentAddress + currentInfo.mOriginalAddress;
}
return new WeightedString(builder.toString(), frequency);
}
private static WeightedString getWordAtAddressWithoutParentAddress(
final Ver3DictDecoder dictDecoder, final int headerSize, final int address,
private static WeightedString getWordAtPositionWithoutParentAddress(
final Ver3DictDecoder dictDecoder, final int headerSize, final int pos,
final FormatOptions options) {
final DictBuffer dictBuffer = dictDecoder.getDictBuffer();
dictBuffer.position(headerSize);
final int count = readCharGroupCount(dictBuffer);
int groupOffset = BinaryDictIOUtils.getGroupCountSize(count);
int groupPos = headerSize + BinaryDictIOUtils.getGroupCountSize(count);
final StringBuilder builder = new StringBuilder();
WeightedString result = null;
CharGroupInfo last = null;
for (int i = count - 1; i >= 0; --i) {
CharGroupInfo info = dictDecoder.readPtNode(groupOffset, options);
groupOffset = info.mEndAddress;
if (info.mOriginalAddress == address) {
CharGroupInfo info = dictDecoder.readPtNode(groupPos, options);
groupPos = info.mEndAddress;
if (info.mOriginalAddress == pos) {
builder.append(new String(info.mCharacters, 0, info.mCharacters.length));
result = new WeightedString(builder.toString(), info.mFrequency);
break; // and return
}
if (BinaryDictIOUtils.hasChildrenAddress(info.mChildrenAddress)) {
if (info.mChildrenAddress > address) {
if (info.mChildrenAddress > pos) {
if (null == last) continue;
builder.append(new String(last.mCharacters, 0, last.mCharacters.length));
dictBuffer.position(last.mChildrenAddress + headerSize);
dictBuffer.position(last.mChildrenAddress);
i = readCharGroupCount(dictBuffer);
groupOffset = last.mChildrenAddress + BinaryDictIOUtils.getGroupCountSize(i);
groupPos = last.mChildrenAddress + BinaryDictIOUtils.getGroupCountSize(i);
last = null;
continue;
}
@ -426,9 +423,9 @@ public final class BinaryDictDecoderUtils {
}
if (0 == i && BinaryDictIOUtils.hasChildrenAddress(last.mChildrenAddress)) {
builder.append(new String(last.mCharacters, 0, last.mCharacters.length));
dictBuffer.position(last.mChildrenAddress + headerSize);
dictBuffer.position(last.mChildrenAddress);
i = readCharGroupCount(dictBuffer);
groupOffset = last.mChildrenAddress + BinaryDictIOUtils.getGroupCountSize(i);
groupPos = last.mChildrenAddress + BinaryDictIOUtils.getGroupCountSize(i);
last = null;
continue;
}
@ -457,21 +454,21 @@ public final class BinaryDictDecoderUtils {
throws IOException {
final DictBuffer dictBuffer = dictDecoder.getDictBuffer();
final ArrayList<CharGroup> nodeArrayContents = new ArrayList<CharGroup>();
final int nodeArrayOrigin = dictBuffer.position() - headerSize;
final int nodeArrayOriginPos = dictBuffer.position();
do { // Scan the linked-list node.
final int nodeArrayHeadPosition = dictBuffer.position() - headerSize;
final int nodeArrayHeadPos = dictBuffer.position();
final int count = readCharGroupCount(dictBuffer);
int groupOffset = nodeArrayHeadPosition + BinaryDictIOUtils.getGroupCountSize(count);
int groupOffsetPos = nodeArrayHeadPos + BinaryDictIOUtils.getGroupCountSize(count);
for (int i = count; i > 0; --i) { // Scan the array of CharGroup.
CharGroupInfo info = dictDecoder.readPtNode(groupOffset, options);
CharGroupInfo info = dictDecoder.readPtNode(groupOffsetPos, options);
if (BinaryDictIOUtils.isMovedGroup(info.mFlags, options)) continue;
ArrayList<WeightedString> shortcutTargets = info.mShortcutTargets;
ArrayList<WeightedString> bigrams = null;
if (null != info.mBigrams) {
bigrams = new ArrayList<WeightedString>();
for (PendingAttribute bigram : info.mBigrams) {
final WeightedString word = getWordAtAddress(dictDecoder, headerSize,
final WeightedString word = getWordAtPosition(dictDecoder, headerSize,
bigram.mAddress, options);
final int reconstructedFrequency =
BinaryDictIOUtils.reconstructBigramFrequency(word.mFrequency,
@ -483,7 +480,7 @@ public final class BinaryDictDecoderUtils {
PtNodeArray children = reverseNodeArrayMap.get(info.mChildrenAddress);
if (null == children) {
final int currentPosition = dictBuffer.position();
dictBuffer.position(info.mChildrenAddress + headerSize);
dictBuffer.position(info.mChildrenAddress);
children = readNodeArray(dictDecoder, headerSize, reverseNodeArrayMap,
reverseGroupMap, options);
dictBuffer.position(currentPosition);
@ -500,7 +497,7 @@ public final class BinaryDictDecoderUtils {
0 != (info.mFlags & FormatSpec.FLAG_IS_NOT_A_WORD),
0 != (info.mFlags & FormatSpec.FLAG_IS_BLACKLISTED)));
}
groupOffset = info.mEndAddress;
groupOffsetPos = info.mEndAddress;
}
// reach the end of the array.
@ -516,8 +513,8 @@ public final class BinaryDictDecoderUtils {
dictBuffer.position() != FormatSpec.NO_FORWARD_LINK_ADDRESS);
final PtNodeArray nodeArray = new PtNodeArray(nodeArrayContents);
nodeArray.mCachedAddressBeforeUpdate = nodeArrayOrigin;
nodeArray.mCachedAddressAfterUpdate = nodeArrayOrigin;
nodeArray.mCachedAddressBeforeUpdate = nodeArrayOriginPos;
nodeArray.mCachedAddressAfterUpdate = nodeArrayOriginPos;
reverseNodeArrayMap.put(nodeArray.mCachedAddressAfterUpdate, nodeArray);
return nodeArray;
}

4
java/src/com/android/inputmethod/latin/makedict/BinaryDictIOUtils.java
View File

@ -95,7 +95,7 @@ public final class BinaryDictIOUtils {
stack.pop();
continue;
}
CharGroupInfo info = dictDecoder.readPtNode(p.mAddress - headerSize, formatOptions);
CharGroupInfo info = dictDecoder.readPtNode(p.mAddress, formatOptions);
for (int i = 0; i < info.mCharacters.length; ++i) {
pushedChars[index++] = info.mCharacters[i];
}
@ -131,7 +131,7 @@ public final class BinaryDictIOUtils {
}
if (!isMovedGroup && hasChildrenAddress(info.mChildrenAddress)) {
Position childrenPos = new Position(info.mChildrenAddress + headerSize, index);
final Position childrenPos = new Position(info.mChildrenAddress, index);
stack.push(childrenPos);
}
}

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

@ -35,11 +35,14 @@ import java.nio.channels.FileChannel;
*/
public interface DictDecoder {
public FileHeader readHeader() throws IOException, UnsupportedFormatException;
/**
* Reads a PtNode and returns CharGroupInfo.
* Reads PtNode from nodeAddress.
* @param ptNodePos the position of PtNode.
* @param formatOptions the format options.
* @return CharGroupInfo.
*/
public CharGroupInfo readPtNode(final int originalGroupAddress,
final FormatOptions formatOptions);
public CharGroupInfo readPtNode(final int ptNodePos, final FormatOptions formatOptions);
public interface DictionaryBufferFactory {
public DictBuffer getDictionaryBuffer(final File file)

7
java/src/com/android/inputmethod/latin/makedict/Ver3DictDecoder.java
View File

@ -214,9 +214,8 @@ public class Ver3DictDecoder implements DictDecoder {
// TODO: Make this buffer multi thread safe.
private final int[] mCharacterBuffer = new int[FormatSpec.MAX_WORD_LENGTH];
@Override
public CharGroupInfo readPtNode(final int originalGroupAddress,
final FormatOptions options) {
int addressPointer = originalGroupAddress;
public CharGroupInfo readPtNode(final int ptNodePos, final FormatOptions options) {
int addressPointer = ptNodePos;
final int flags = PtNodeReader.readPtNodeOptionFlags(mDictBuffer);
++addressPointer;
@ -268,7 +267,7 @@ public class Ver3DictDecoder implements DictDecoder {
MakedictLog.d("too many bigrams in a group.");
}
}
return new CharGroupInfo(originalGroupAddress, addressPointer, flags, characters, frequency,
return new CharGroupInfo(ptNodePos, addressPointer, flags, characters, frequency,
parentAddress, childrenAddress, shortcutTargets, bigrams);
}
}

4
tests/src/com/android/inputmethod/latin/makedict/BinaryDictDecoderEncoderTests.java
View File

@ -512,8 +512,8 @@ public class BinaryDictDecoderEncoderTests extends AndroidTestCase {
return null;
}
if (fileHeader == null) return null;
return BinaryDictDecoderUtils.getWordAtAddress(dictDecoder, fileHeader.mHeaderSize,
address - fileHeader.mHeaderSize, fileHeader.mFormatOptions).mWord;
return BinaryDictDecoderUtils.getWordAtPosition(dictDecoder, fileHeader.mHeaderSize,
address, fileHeader.mFormatOptions).mWord;
}
private long runGetTerminalPosition(final Ver3DictDecoder dictDecoder, final String word,

4
tests/src/com/android/inputmethod/latin/makedict/BinaryDictIOUtilsTests.java
View File

@ -228,8 +228,8 @@ public class BinaryDictIOUtilsTests extends AndroidTestCase {
new Ver3DictDecoder.DictionaryBufferFromReadOnlyByteBufferFactory());
final FileHeader fileHeader = dictDecoder.readHeader();
assertEquals(word,
BinaryDictDecoderUtils.getWordAtAddress(dictDecoder, fileHeader.mHeaderSize,
position - fileHeader.mHeaderSize, fileHeader.mFormatOptions).mWord);
BinaryDictDecoderUtils.getWordAtPosition(dictDecoder, fileHeader.mHeaderSize,
position, fileHeader.mFormatOptions).mWord);
} catch (IOException e) {
Log.e(TAG, "Raised an IOException while looking up a word", e);
} catch (UnsupportedFormatException e) {