Merge "Remove references to the v3 dictionary."
Jean Chalard
Android (Google) Code Review
commit
f08b1ea41a
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@ -1,492 +0,0 @@
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/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.inputmethod.latin.makedict;
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import com.android.inputmethod.annotations.UsedForTesting;
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import com.android.inputmethod.latin.Constants;
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import com.android.inputmethod.latin.makedict.BinaryDictDecoderUtils.DictBuffer;
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import com.android.inputmethod.latin.makedict.FormatSpec.FileHeader;
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import com.android.inputmethod.latin.makedict.FormatSpec.FormatOptions;
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import com.android.inputmethod.latin.makedict.FusionDictionary.WeightedString;
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import com.android.inputmethod.latin.utils.CollectionUtils;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.util.ArrayList;
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import java.util.Arrays;
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/**
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* The utility class to help dynamic updates on the binary dictionary.
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*
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* All the methods in this class are static.
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*/
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@UsedForTesting
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public final class DynamicBinaryDictIOUtils {
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private static final boolean DBG = false;
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static final int MAX_JUMPS = 10000;
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private DynamicBinaryDictIOUtils() {
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// This utility class is not publicly instantiable.
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}
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/* package */ static int markAsDeleted(final int flags) {
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return (flags & (~FormatSpec.MASK_CHILDREN_ADDRESS_TYPE)) | FormatSpec.FLAG_IS_DELETED;
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}
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/**
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* Update a parent address in a PtNode that is referred to by ptNodeOriginAddress.
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*
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* @param dictUpdater the DictUpdater to write.
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* @param ptNodeOriginAddress the address of the PtNode.
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* @param newParentAddress the absolute address of the parent.
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* @param formatOptions file format options.
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*/
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private static void updateParentAddress(final Ver2DictUpdater dictUpdater,
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final int ptNodeOriginAddress, final int newParentAddress,
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final FormatOptions formatOptions) {
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final DictBuffer dictBuffer = dictUpdater.getDictBuffer();
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final int originalPosition = dictBuffer.position();
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dictBuffer.position(ptNodeOriginAddress);
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if (!formatOptions.supportsDynamicUpdate()) {
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throw new RuntimeException("this file format does not support parent addresses");
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}
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final int flags = dictBuffer.readUnsignedByte();
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if (BinaryDictIOUtils.isMovedPtNode(flags, formatOptions)) {
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// If the node is moved, the parent address is stored in the destination node.
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// We are guaranteed to process the destination node later, so there is no need to
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// update anything here.
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dictBuffer.position(originalPosition);
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return;
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}
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if (DBG) {
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MakedictLog.d("update parent address flags=" + flags + ", " + ptNodeOriginAddress);
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}
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final int parentOffset = newParentAddress - ptNodeOriginAddress;
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BinaryDictIOUtils.writeSInt24ToBuffer(dictBuffer, parentOffset);
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dictBuffer.position(originalPosition);
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}
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/**
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* Update parent addresses in a node array stored at ptNodeOriginAddress.
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*
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* @param dictUpdater the DictUpdater to be modified.
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* @param ptNodeOriginAddress the address of the node array to update.
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* @param newParentAddress the address to be written.
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* @param formatOptions file format options.
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*/
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private static void updateParentAddresses(final Ver2DictUpdater dictUpdater,
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final int ptNodeOriginAddress, final int newParentAddress,
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final FormatOptions formatOptions) {
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final int originalPosition = dictUpdater.getPosition();
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dictUpdater.setPosition(ptNodeOriginAddress);
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do {
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final int count = dictUpdater.readPtNodeCount();
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for (int i = 0; i < count; ++i) {
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updateParentAddress(dictUpdater, dictUpdater.getPosition(), newParentAddress,
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formatOptions);
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dictUpdater.skipPtNode(formatOptions);
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}
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if (!dictUpdater.readAndFollowForwardLink()) break;
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if (dictUpdater.getPosition() == FormatSpec.NO_FORWARD_LINK_ADDRESS) break;
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} while (formatOptions.supportsDynamicUpdate());
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dictUpdater.setPosition(originalPosition);
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}
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/**
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* Update a children address in a PtNode that is addressed by ptNodeOriginAddress.
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*
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* @param dictUpdater the DictUpdater to write.
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* @param ptNodeOriginAddress the address of the PtNode.
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* @param newChildrenAddress the absolute address of the child.
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* @param formatOptions file format options.
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*/
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private static void updateChildrenAddress(final Ver2DictUpdater dictUpdater,
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final int ptNodeOriginAddress, final int newChildrenAddress,
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final FormatOptions formatOptions) {
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final DictBuffer dictBuffer = dictUpdater.getDictBuffer();
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final int originalPosition = dictBuffer.position();
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dictBuffer.position(ptNodeOriginAddress);
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final int flags = dictBuffer.readUnsignedByte();
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BinaryDictDecoderUtils.readParentAddress(dictBuffer, formatOptions);
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BinaryDictIOUtils.skipString(dictBuffer, (flags & FormatSpec.FLAG_HAS_MULTIPLE_CHARS) != 0);
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if ((flags & FormatSpec.FLAG_IS_TERMINAL) != 0) dictBuffer.readUnsignedByte();
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final int childrenOffset = newChildrenAddress == FormatSpec.NO_CHILDREN_ADDRESS
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? FormatSpec.NO_CHILDREN_ADDRESS : newChildrenAddress - dictBuffer.position();
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BinaryDictIOUtils.writeSInt24ToBuffer(dictBuffer, childrenOffset);
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dictBuffer.position(originalPosition);
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}
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/**
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* Helper method to move a PtNode to the tail of the file.
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*/
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private static int movePtNode(final OutputStream destination,
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final Ver2DictUpdater dictUpdater, final PtNodeInfo info,
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final int nodeArrayOriginAddress, final int oldNodeAddress,
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final FormatOptions formatOptions) throws IOException {
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final DictBuffer dictBuffer = dictUpdater.getDictBuffer();
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updateParentAddress(dictUpdater, oldNodeAddress, dictBuffer.limit() + 1, formatOptions);
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dictBuffer.position(oldNodeAddress);
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final int currentFlags = dictBuffer.readUnsignedByte();
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dictBuffer.position(oldNodeAddress);
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dictBuffer.put((byte)(FormatSpec.FLAG_IS_MOVED | (currentFlags
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& (~FormatSpec.MASK_MOVE_AND_DELETE_FLAG))));
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int size = FormatSpec.PTNODE_FLAGS_SIZE;
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updateForwardLink(dictUpdater, nodeArrayOriginAddress, dictBuffer.limit(), formatOptions);
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size += BinaryDictIOUtils.writeNodes(destination, new PtNodeInfo[] { info });
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return size;
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}
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@SuppressWarnings("unused")
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private static void updateForwardLink(final Ver2DictUpdater dictUpdater,
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final int nodeArrayOriginAddress, final int newNodeArrayAddress,
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final FormatOptions formatOptions) {
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final DictBuffer dictBuffer = dictUpdater.getDictBuffer();
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dictUpdater.setPosition(nodeArrayOriginAddress);
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int jumpCount = 0;
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while (jumpCount++ < MAX_JUMPS) {
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final int count = dictUpdater.readPtNodeCount();
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for (int i = 0; i < count; ++i) {
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dictUpdater.readPtNode(dictUpdater.getPosition(), formatOptions);
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}
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final int forwardLinkAddress = dictBuffer.readUnsignedInt24();
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if (forwardLinkAddress == FormatSpec.NO_FORWARD_LINK_ADDRESS) {
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dictBuffer.position(dictBuffer.position() - FormatSpec.FORWARD_LINK_ADDRESS_SIZE);
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BinaryDictIOUtils.writeSInt24ToBuffer(dictBuffer, newNodeArrayAddress);
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return;
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}
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dictBuffer.position(forwardLinkAddress);
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}
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if (DBG && jumpCount >= MAX_JUMPS) {
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throw new RuntimeException("too many jumps, probably a bug.");
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}
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}
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/**
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* Move a PtNode that is referred to by oldPtNodeOrigin to the tail of the file, and set the
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* children address to the byte after the PtNode.
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*
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* @param fileEndAddress the address of the tail of the file.
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* @param codePoints the characters to put inside the PtNode.
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* @param length how many code points to read from codePoints.
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* @param flags the flags for this PtNode.
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* @param frequency the frequency of this terminal.
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* @param parentAddress the address of the parent PtNode of this PtNode.
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* @param shortcutTargets the shortcut targets for this PtNode.
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* @param bigrams the bigrams for this PtNode.
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* @param destination the stream representing the tail of the file.
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* @param dictUpdater the DictUpdater.
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* @param oldPtNodeArrayOrigin the origin of the old PtNode array this PtNode was a part of.
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* @param oldPtNodeOrigin the old origin where this PtNode used to be stored.
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* @param formatOptions format options for this dictionary.
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* @return the size written, in bytes.
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* @throws IOException if the file can't be accessed
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*/
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private static int movePtNode(final int fileEndAddress, final int[] codePoints,
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final int length, final int flags, final int frequency, final int parentAddress,
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final ArrayList<WeightedString> shortcutTargets,
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final ArrayList<PendingAttribute> bigrams, final OutputStream destination,
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final Ver2DictUpdater dictUpdater, final int oldPtNodeArrayOrigin,
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final int oldPtNodeOrigin, final FormatOptions formatOptions) throws IOException {
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int size = 0;
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final int newPtNodeOrigin = fileEndAddress + 1;
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final int[] writtenCharacters = Arrays.copyOfRange(codePoints, 0, length);
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final PtNodeInfo tmpInfo = new PtNodeInfo(newPtNodeOrigin, -1 /* endAddress */,
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flags, writtenCharacters, frequency, parentAddress, FormatSpec.NO_CHILDREN_ADDRESS,
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shortcutTargets, bigrams);
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size = BinaryDictIOUtils.computePtNodeSize(tmpInfo, formatOptions);
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final PtNodeInfo newInfo = new PtNodeInfo(newPtNodeOrigin, newPtNodeOrigin + size,
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flags, writtenCharacters, frequency, parentAddress,
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fileEndAddress + 1 + size + FormatSpec.FORWARD_LINK_ADDRESS_SIZE, shortcutTargets,
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bigrams);
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movePtNode(destination, dictUpdater, newInfo, oldPtNodeArrayOrigin, oldPtNodeOrigin,
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formatOptions);
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return 1 + size + FormatSpec.FORWARD_LINK_ADDRESS_SIZE;
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}
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/**
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* Converts a list of WeightedString to a list of PendingAttribute.
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*/
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public static ArrayList<PendingAttribute> resolveBigramPositions(final DictUpdater dictUpdater,
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final ArrayList<WeightedString> bigramStrings)
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throws IOException, UnsupportedFormatException {
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if (bigramStrings == null) return CollectionUtils.newArrayList();
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final ArrayList<PendingAttribute> bigrams = CollectionUtils.newArrayList();
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for (final WeightedString bigram : bigramStrings) {
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final int pos = dictUpdater.getTerminalPosition(bigram.mWord);
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if (pos == FormatSpec.NOT_VALID_WORD) {
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// TODO: figure out what is the correct thing to do here.
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} else {
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bigrams.add(new PendingAttribute(bigram.mFrequency, pos));
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}
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}
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return bigrams;
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}
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/**
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* Insert a word into a binary dictionary.
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*
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* @param dictUpdater the dict updater.
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* @param destination a stream to the underlying file, with the pointer at the end of the file.
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* @param word the word to insert.
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* @param frequency the frequency of the new word.
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* @param bigramStrings bigram list, or null if none.
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* @param shortcuts shortcut list, or null if none.
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* @param isBlackListEntry whether this should be a blacklist entry.
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* @throws IOException if the file can't be accessed.
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* @throws UnsupportedFormatException if the existing dictionary is in an unexpected format.
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*/
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// TODO: Support batch insertion.
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// TODO: Remove @UsedForTesting once UserHistoryDictionary is implemented by BinaryDictionary.
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@UsedForTesting
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public static void insertWord(final Ver2DictUpdater dictUpdater,
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final OutputStream destination, final String word, final int frequency,
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final ArrayList<WeightedString> bigramStrings,
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final ArrayList<WeightedString> shortcuts, final boolean isNotAWord,
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final boolean isBlackListEntry)
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throws IOException, UnsupportedFormatException {
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final ArrayList<PendingAttribute> bigrams = resolveBigramPositions(dictUpdater,
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bigramStrings);
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final DictBuffer dictBuffer = dictUpdater.getDictBuffer();
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final boolean isTerminal = true;
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final boolean hasBigrams = !bigrams.isEmpty();
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final boolean hasShortcuts = shortcuts != null && !shortcuts.isEmpty();
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// find the insert position of the word.
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if (dictBuffer.position() != 0) dictBuffer.position(0);
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final FileHeader fileHeader = dictUpdater.readHeader();
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int wordPos = 0, address = dictBuffer.position(), nodeOriginAddress = dictBuffer.position();
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final int[] codePoints = FusionDictionary.getCodePoints(word);
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final int wordLen = codePoints.length;
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for (int depth = 0; depth < Constants.DICTIONARY_MAX_WORD_LENGTH; ++depth) {
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if (wordPos >= wordLen) break;
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nodeOriginAddress = dictBuffer.position();
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int nodeParentAddress = -1;
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final int ptNodeCount = BinaryDictDecoderUtils.readPtNodeCount(dictBuffer);
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boolean foundNextNode = false;
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for (int i = 0; i < ptNodeCount; ++i) {
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address = dictBuffer.position();
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final PtNodeInfo currentInfo = dictUpdater.readPtNode(address,
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fileHeader.mFormatOptions);
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final boolean isMovedNode = BinaryDictIOUtils.isMovedPtNode(currentInfo.mFlags,
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fileHeader.mFormatOptions);
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if (isMovedNode) continue;
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nodeParentAddress = (currentInfo.mParentAddress == FormatSpec.NO_PARENT_ADDRESS)
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? FormatSpec.NO_PARENT_ADDRESS : currentInfo.mParentAddress + address;
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boolean matched = true;
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for (int p = 0; p < currentInfo.mCharacters.length; ++p) {
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if (wordPos + p >= wordLen) {
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/*
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* splitting
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* before
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* abcd - ef
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*
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* insert "abc"
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*
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* after
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* abc - d - ef
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*/
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final int newNodeAddress = dictBuffer.limit();
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final int flags = BinaryDictEncoderUtils.makePtNodeFlags(p > 1,
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isTerminal, 0, hasShortcuts, hasBigrams, false /* isNotAWord */,
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false /* isBlackListEntry */, fileHeader.mFormatOptions);
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int written = movePtNode(newNodeAddress, currentInfo.mCharacters, p, flags,
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frequency, nodeParentAddress, shortcuts, bigrams, destination,
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dictUpdater, nodeOriginAddress, address, fileHeader.mFormatOptions);
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final int[] characters2 = Arrays.copyOfRange(currentInfo.mCharacters, p,
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currentInfo.mCharacters.length);
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if (currentInfo.mChildrenAddress != FormatSpec.NO_CHILDREN_ADDRESS) {
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updateParentAddresses(dictUpdater, currentInfo.mChildrenAddress,
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newNodeAddress + written + 1, fileHeader.mFormatOptions);
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}
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final PtNodeInfo newInfo2 = new PtNodeInfo(
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newNodeAddress + written + 1, -1 /* endAddress */,
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currentInfo.mFlags, characters2, currentInfo.mFrequency,
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newNodeAddress + 1, currentInfo.mChildrenAddress,
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currentInfo.mShortcutTargets, currentInfo.mBigrams);
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BinaryDictIOUtils.writeNodes(destination, new PtNodeInfo[] { newInfo2 });
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return;
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} else if (codePoints[wordPos + p] != currentInfo.mCharacters[p]) {
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if (p > 0) {
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/*
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* splitting
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* before
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* ab - cd
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*
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* insert "ac"
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*
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||||
* after
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* a - b - cd
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* |
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* - c
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*/
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final int newNodeAddress = dictBuffer.limit();
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final int childrenAddress = currentInfo.mChildrenAddress;
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// move prefix
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final int prefixFlags = BinaryDictEncoderUtils.makePtNodeFlags(p > 1,
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false /* isTerminal */, 0 /* childrenAddressSize*/,
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false /* hasShortcut */, false /* hasBigrams */,
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false /* isNotAWord */, false /* isBlackListEntry */,
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fileHeader.mFormatOptions);
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int written = movePtNode(newNodeAddress, currentInfo.mCharacters, p,
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prefixFlags, -1 /* frequency */, nodeParentAddress, null, null,
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destination, dictUpdater, nodeOriginAddress, address,
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fileHeader.mFormatOptions);
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final int[] suffixCharacters = Arrays.copyOfRange(
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currentInfo.mCharacters, p, currentInfo.mCharacters.length);
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if (currentInfo.mChildrenAddress != FormatSpec.NO_CHILDREN_ADDRESS) {
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updateParentAddresses(dictUpdater, currentInfo.mChildrenAddress,
|
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newNodeAddress + written + 1, fileHeader.mFormatOptions);
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||||
}
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final int suffixFlags = BinaryDictEncoderUtils.makePtNodeFlags(
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suffixCharacters.length > 1,
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(currentInfo.mFlags & FormatSpec.FLAG_IS_TERMINAL) != 0,
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||||
0 /* childrenAddressSize */,
|
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(currentInfo.mFlags & FormatSpec.FLAG_HAS_SHORTCUT_TARGETS)
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||||
!= 0,
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||||
(currentInfo.mFlags & FormatSpec.FLAG_HAS_BIGRAMS) != 0,
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isNotAWord, isBlackListEntry, fileHeader.mFormatOptions);
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||||
final PtNodeInfo suffixInfo = new PtNodeInfo(
|
||||
newNodeAddress + written + 1, -1 /* endAddress */, suffixFlags,
|
||||
suffixCharacters, currentInfo.mFrequency, newNodeAddress + 1,
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||||
currentInfo.mChildrenAddress, currentInfo.mShortcutTargets,
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||||
currentInfo.mBigrams);
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written += BinaryDictIOUtils.computePtNodeSize(suffixInfo,
|
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fileHeader.mFormatOptions) + 1;
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||||
final int[] newCharacters = Arrays.copyOfRange(codePoints, wordPos + p,
|
||||
codePoints.length);
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||||
final int flags = BinaryDictEncoderUtils.makePtNodeFlags(
|
||||
newCharacters.length > 1, isTerminal,
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||||
0 /* childrenAddressSize */, hasShortcuts, hasBigrams,
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isNotAWord, isBlackListEntry, fileHeader.mFormatOptions);
|
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final PtNodeInfo newInfo = new PtNodeInfo(
|
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newNodeAddress + written, -1 /* endAddress */, flags,
|
||||
newCharacters, frequency, newNodeAddress + 1,
|
||||
FormatSpec.NO_CHILDREN_ADDRESS, shortcuts, bigrams);
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BinaryDictIOUtils.writeNodes(destination,
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||||
new PtNodeInfo[] { suffixInfo, newInfo });
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return;
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||||
}
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||||
matched = false;
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||||
break;
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||||
}
|
||||
}
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||||
|
||||
if (matched) {
|
||||
if (wordPos + currentInfo.mCharacters.length == wordLen) {
|
||||
// the word exists in the dictionary.
|
||||
// only update the PtNode.
|
||||
final int newNodeAddress = dictBuffer.limit();
|
||||
final boolean hasMultipleChars = currentInfo.mCharacters.length > 1;
|
||||
final int flags = BinaryDictEncoderUtils.makePtNodeFlags(hasMultipleChars,
|
||||
isTerminal, 0 /* childrenAddressSize */, hasShortcuts, hasBigrams,
|
||||
isNotAWord, isBlackListEntry, fileHeader.mFormatOptions);
|
||||
final PtNodeInfo newInfo = new PtNodeInfo(newNodeAddress + 1,
|
||||
-1 /* endAddress */, flags, currentInfo.mCharacters, frequency,
|
||||
nodeParentAddress, currentInfo.mChildrenAddress, shortcuts,
|
||||
bigrams);
|
||||
movePtNode(destination, dictUpdater, newInfo, nodeOriginAddress, address,
|
||||
fileHeader.mFormatOptions);
|
||||
return;
|
||||
}
|
||||
wordPos += currentInfo.mCharacters.length;
|
||||
if (currentInfo.mChildrenAddress == FormatSpec.NO_CHILDREN_ADDRESS) {
|
||||
/*
|
||||
* found the prefix of the word.
|
||||
* make new PtNode and link to the PtNode from this PtNode.
|
||||
*
|
||||
* before
|
||||
* ab - cd
|
||||
*
|
||||
* insert "abcde"
|
||||
*
|
||||
* after
|
||||
* ab - cd - e
|
||||
*/
|
||||
final int newNodeArrayAddress = dictBuffer.limit();
|
||||
updateChildrenAddress(dictUpdater, address, newNodeArrayAddress,
|
||||
fileHeader.mFormatOptions);
|
||||
final int newNodeAddress = newNodeArrayAddress + 1;
|
||||
final boolean hasMultipleChars = (wordLen - wordPos) > 1;
|
||||
final int flags = BinaryDictEncoderUtils.makePtNodeFlags(hasMultipleChars,
|
||||
isTerminal, 0 /* childrenAddressSize */, hasShortcuts, hasBigrams,
|
||||
isNotAWord, isBlackListEntry, fileHeader.mFormatOptions);
|
||||
final int[] characters = Arrays.copyOfRange(codePoints, wordPos, wordLen);
|
||||
final PtNodeInfo newInfo = new PtNodeInfo(newNodeAddress, -1, flags,
|
||||
characters, frequency, address, FormatSpec.NO_CHILDREN_ADDRESS,
|
||||
shortcuts, bigrams);
|
||||
BinaryDictIOUtils.writeNodes(destination, new PtNodeInfo[] { newInfo });
|
||||
return;
|
||||
}
|
||||
dictBuffer.position(currentInfo.mChildrenAddress);
|
||||
foundNextNode = true;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (foundNextNode) continue;
|
||||
|
||||
// reached the end of the array.
|
||||
final int linkAddressPosition = dictBuffer.position();
|
||||
int nextLink = dictBuffer.readUnsignedInt24();
|
||||
if ((nextLink & FormatSpec.MSB24) != 0) {
|
||||
nextLink = -(nextLink & FormatSpec.SINT24_MAX);
|
||||
}
|
||||
if (nextLink == FormatSpec.NO_FORWARD_LINK_ADDRESS) {
|
||||
/*
|
||||
* expand this node.
|
||||
*
|
||||
* before
|
||||
* ab - cd
|
||||
*
|
||||
* insert "abef"
|
||||
*
|
||||
* after
|
||||
* ab - cd
|
||||
* |
|
||||
* - ef
|
||||
*/
|
||||
|
||||
// change the forward link address.
|
||||
final int newNodeAddress = dictBuffer.limit();
|
||||
dictBuffer.position(linkAddressPosition);
|
||||
BinaryDictIOUtils.writeSInt24ToBuffer(dictBuffer, newNodeAddress);
|
||||
|
||||
final int[] characters = Arrays.copyOfRange(codePoints, wordPos, wordLen);
|
||||
final int flags = BinaryDictEncoderUtils.makePtNodeFlags(characters.length > 1,
|
||||
isTerminal, 0 /* childrenAddressSize */, hasShortcuts, hasBigrams,
|
||||
isNotAWord, isBlackListEntry, fileHeader.mFormatOptions);
|
||||
final PtNodeInfo newInfo = new PtNodeInfo(newNodeAddress + 1,
|
||||
-1 /* endAddress */, flags, characters, frequency, nodeParentAddress,
|
||||
FormatSpec.NO_CHILDREN_ADDRESS, shortcuts, bigrams);
|
||||
BinaryDictIOUtils.writeNodes(destination, new PtNodeInfo[]{ newInfo });
|
||||
return;
|
||||
} else {
|
||||
depth--;
|
||||
dictBuffer.position(nextLink);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -1,82 +0,0 @@
|
|||
/*
|
||||
* Copyright (C) 2013 The Android Open Source Project
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package com.android.inputmethod.latin.makedict;
|
||||
|
||||
import com.android.inputmethod.annotations.UsedForTesting;
|
||||
import com.android.inputmethod.latin.makedict.FusionDictionary.WeightedString;
|
||||
|
||||
import java.io.File;
|
||||
import java.io.FileNotFoundException;
|
||||
import java.io.FileOutputStream;
|
||||
import java.io.IOException;
|
||||
import java.io.OutputStream;
|
||||
import java.util.ArrayList;
|
||||
|
||||
/**
|
||||
* An implementation of DictUpdater for version 2 binary dictionary.
|
||||
*/
|
||||
@UsedForTesting
|
||||
public class Ver2DictUpdater extends Ver2DictDecoder implements DictUpdater {
|
||||
private OutputStream mOutStream;
|
||||
|
||||
@UsedForTesting
|
||||
public Ver2DictUpdater(final File dictFile, final int factoryType) {
|
||||
// DictUpdater must have an updatable DictBuffer.
|
||||
super(dictFile, ((factoryType & MASK_DICTBUFFER) == USE_BYTEARRAY)
|
||||
? USE_BYTEARRAY : USE_WRITABLE_BYTEBUFFER);
|
||||
mOutStream = null;
|
||||
}
|
||||
|
||||
private void openStreamAndBuffer() throws FileNotFoundException, IOException {
|
||||
super.openDictBuffer();
|
||||
mOutStream = new FileOutputStream(mDictionaryBinaryFile, true /* append */);
|
||||
}
|
||||
|
||||
private void close() throws IOException {
|
||||
if (mOutStream != null) {
|
||||
mOutStream.close();
|
||||
mOutStream = null;
|
||||
}
|
||||
}
|
||||
|
||||
@Override @UsedForTesting
|
||||
public void deleteWord(final String word) throws IOException, UnsupportedFormatException {
|
||||
if (mOutStream == null) openStreamAndBuffer();
|
||||
mDictBuffer.position(0);
|
||||
readHeader();
|
||||
final int wordPos = getTerminalPosition(word);
|
||||
if (wordPos != FormatSpec.NOT_VALID_WORD) {
|
||||
mDictBuffer.position(wordPos);
|
||||
final int flags = mDictBuffer.readUnsignedByte();
|
||||
mDictBuffer.position(wordPos);
|
||||
mDictBuffer.put((byte) DynamicBinaryDictIOUtils.markAsDeleted(flags));
|
||||
}
|
||||
close();
|
||||
}
|
||||
|
||||
@Override @UsedForTesting
|
||||
public void insertWord(final String word, final int frequency,
|
||||
final ArrayList<WeightedString> bigramStrings,
|
||||
final ArrayList<WeightedString> shortcuts,
|
||||
final boolean isNotAWord, final boolean isBlackListEntry)
|
||||
throws IOException, UnsupportedFormatException {
|
||||
if (mOutStream == null) openStreamAndBuffer();
|
||||
DynamicBinaryDictIOUtils.insertWord(this, mOutStream, word, frequency, bigramStrings,
|
||||
shortcuts, isNotAWord, isBlackListEntry);
|
||||
close();
|
||||
}
|
||||
}
|
||||
|
|
@ -40,6 +40,7 @@ import java.util.Iterator;
|
|||
@UsedForTesting
|
||||
public class Ver4DictUpdater extends Ver4DictDecoder implements DictUpdater {
|
||||
private static final String TAG = Ver4DictUpdater.class.getSimpleName();
|
||||
private static final int MAX_JUMPS = 10000;
|
||||
|
||||
private OutputStream mDictStream;
|
||||
private final File mFrequencyFile;
|
||||
|
|
@ -146,7 +147,7 @@ public class Ver4DictUpdater extends Ver4DictDecoder implements DictUpdater {
|
|||
mDictBuffer.position(wordPos);
|
||||
final int flags = PtNodeReader.readPtNodeOptionFlags(mDictBuffer);
|
||||
mDictBuffer.position(wordPos);
|
||||
mDictBuffer.put((byte) DynamicBinaryDictIOUtils.markAsDeleted(flags));
|
||||
mDictBuffer.put((byte)markAsDeleted(flags));
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -183,7 +184,7 @@ public class Ver4DictUpdater extends Ver4DictDecoder implements DictUpdater {
|
|||
skipPtNode(formatOptions);
|
||||
}
|
||||
if (!readAndFollowForwardLink()) break;
|
||||
} while (jumpCount++ < DynamicBinaryDictIOUtils.MAX_JUMPS);
|
||||
} while (jumpCount++ < MAX_JUMPS);
|
||||
setPosition(originalPos);
|
||||
}
|
||||
|
||||
|
|
@ -216,7 +217,7 @@ public class Ver4DictUpdater extends Ver4DictDecoder implements DictUpdater {
|
|||
final int originalPos = getPosition();
|
||||
setPosition(nodeArrayPos);
|
||||
int jumpCount = 0;
|
||||
while (jumpCount++ < DynamicBinaryDictIOUtils.MAX_JUMPS) {
|
||||
while (jumpCount++ < MAX_JUMPS) {
|
||||
final int ptNodeCount = readPtNodeCount();
|
||||
for (int i = 0; i < ptNodeCount; ++i) {
|
||||
skipPtNode(formatOptions);
|
||||
|
|
@ -735,8 +736,7 @@ public class Ver4DictUpdater extends Ver4DictDecoder implements DictUpdater {
|
|||
mDictBuffer.put((byte) newFlags);
|
||||
|
||||
updateFrequency(terminalId, frequency);
|
||||
insertBigrams(terminalId, frequency,
|
||||
DynamicBinaryDictIOUtils.resolveBigramPositions(this, bigramStrings));
|
||||
insertBigrams(terminalId, frequency, resolveBigramPositions(this, bigramStrings));
|
||||
insertShortcuts(terminalId, shortcuts);
|
||||
}
|
||||
|
||||
|
|
@ -765,8 +765,30 @@ public class Ver4DictUpdater extends Ver4DictDecoder implements DictUpdater {
|
|||
insertTerminalPosition(posOfTerminal);
|
||||
close();
|
||||
|
||||
insertBigrams(newTerminalId, frequency,
|
||||
DynamicBinaryDictIOUtils.resolveBigramPositions(this, bigramStrings));
|
||||
insertBigrams(newTerminalId, frequency, resolveBigramPositions(this, bigramStrings));
|
||||
insertShortcuts(newTerminalId, shortcuts);
|
||||
}
|
||||
|
||||
/**
|
||||
* Converts a list of WeightedString to a list of PendingAttribute.
|
||||
*/
|
||||
private static ArrayList<PendingAttribute> resolveBigramPositions(final DictUpdater dictUpdater,
|
||||
final ArrayList<WeightedString> bigramStrings)
|
||||
throws IOException, UnsupportedFormatException {
|
||||
if (bigramStrings == null) return CollectionUtils.newArrayList();
|
||||
final ArrayList<PendingAttribute> bigrams = CollectionUtils.newArrayList();
|
||||
for (final WeightedString bigram : bigramStrings) {
|
||||
final int pos = dictUpdater.getTerminalPosition(bigram.mWord);
|
||||
if (pos == FormatSpec.NOT_VALID_WORD) {
|
||||
// TODO: figure out what is the correct thing to do here.
|
||||
} else {
|
||||
bigrams.add(new PendingAttribute(bigram.mFrequency, pos));
|
||||
}
|
||||
}
|
||||
return bigrams;
|
||||
}
|
||||
|
||||
private static int markAsDeleted(final int flags) {
|
||||
return (flags & (~FormatSpec.MASK_CHILDREN_ADDRESS_TYPE)) | FormatSpec.FLAG_IS_DELETED;
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -76,8 +76,6 @@ public class BinaryDictUtils {
|
|||
throws UnsupportedFormatException {
|
||||
if (formatOptions.mVersion == FormatSpec.VERSION4) {
|
||||
return new Ver4DictUpdater(file, DictDecoder.USE_WRITABLE_BYTEBUFFER);
|
||||
} else if (formatOptions.mVersion == FormatSpec.VERSION3) {
|
||||
return new Ver2DictUpdater(file, DictDecoder.USE_WRITABLE_BYTEBUFFER);
|
||||
} else {
|
||||
throw new UnsupportedFormatException("The format option has a wrong version : "
|
||||
+ formatOptions.mVersion);
|
||||
|
|
|
|||
Loading…
Reference in New Issue