106 lines
4.1 KiB
Java
106 lines
4.1 KiB
Java
/*
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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;
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import android.content.Context;
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import com.android.inputmethod.keyboard.ProximityInfo;
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import com.android.inputmethod.latin.SuggestedWords.SuggestedWordInfo;
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import com.android.inputmethod.latin.makedict.DictEncoder;
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import com.android.inputmethod.latin.makedict.FormatSpec;
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import com.android.inputmethod.latin.makedict.FusionDictionary;
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import com.android.inputmethod.latin.makedict.FusionDictionary.PtNodeArray;
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import com.android.inputmethod.latin.makedict.FusionDictionary.WeightedString;
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import com.android.inputmethod.latin.makedict.UnsupportedFormatException;
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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.util.ArrayList;
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import java.util.HashMap;
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/**
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* An in memory dictionary for memorizing entries and writing a binary dictionary.
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*/
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public class DictionaryWriter extends AbstractDictionaryWriter {
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private static final int BINARY_DICT_VERSION = 3;
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private static final FormatSpec.FormatOptions FORMAT_OPTIONS =
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new FormatSpec.FormatOptions(BINARY_DICT_VERSION, true /* supportsDynamicUpdate */);
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private FusionDictionary mFusionDictionary;
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public DictionaryWriter(final Context context, final String dictType) {
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super(context, dictType);
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clear();
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}
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@Override
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public void clear() {
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final HashMap<String, String> attributes = CollectionUtils.newHashMap();
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mFusionDictionary = new FusionDictionary(new PtNodeArray(),
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new FusionDictionary.DictionaryOptions(attributes, false, false));
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}
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/**
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* Adds a word unigram to the fusion dictionary.
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*/
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// TODO: Create "cache dictionary" to cache fresh words for frequently updated dictionaries,
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// considering performance regression.
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@Override
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public void addUnigramWord(final String word, final String shortcutTarget, final int frequency,
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final boolean isNotAWord) {
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if (shortcutTarget == null) {
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mFusionDictionary.add(word, frequency, null, isNotAWord);
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} else {
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// TODO: Do this in the subclass, with this class taking an arraylist.
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final ArrayList<WeightedString> shortcutTargets = CollectionUtils.newArrayList();
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shortcutTargets.add(new WeightedString(shortcutTarget, frequency));
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mFusionDictionary.add(word, frequency, shortcutTargets, isNotAWord);
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}
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}
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@Override
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public void addBigramWords(final String word0, final String word1, final int frequency,
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final boolean isValid, final long lastModifiedTime) {
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mFusionDictionary.setBigram(word0, word1, frequency);
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}
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@Override
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public void removeBigramWords(final String word0, final String word1) {
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// This class don't support removing bigram words.
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}
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@Override
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protected void writeDictionary(final DictEncoder dictEncoder)
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throws IOException, UnsupportedFormatException {
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dictEncoder.writeDictionary(mFusionDictionary, FORMAT_OPTIONS);
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}
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@Override
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public ArrayList<SuggestedWordInfo> getSuggestions(final WordComposer composer,
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final String prevWord, final ProximityInfo proximityInfo,
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boolean blockOffensiveWords, final int[] additionalFeaturesOptions) {
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// This class doesn't support suggestion.
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return null;
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}
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@Override
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public boolean isValidWord(String word) {
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// This class doesn't support dictionary retrieval.
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return false;
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}
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}
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