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