1 /* 2 * Copyright (C) 2013 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.inputmethod.latin; 18 19 import android.content.Context; 20 import android.util.Log; 21 22 import com.android.inputmethod.latin.makedict.DictEncoder; 23 import com.android.inputmethod.latin.makedict.UnsupportedFormatException; 24 import com.android.inputmethod.latin.makedict.Ver3DictEncoder; 25 26 import java.io.File; 27 import java.io.IOException; 28 import java.util.Map; 29 30 // TODO: Quit extending Dictionary after implementing dynamic binary dictionary. 31 abstract public class AbstractDictionaryWriter extends Dictionary { 32 /** Used for Log actions from this class */ 33 private static final String TAG = AbstractDictionaryWriter.class.getSimpleName(); 34 35 private final Context mContext; 36 37 public AbstractDictionaryWriter(final Context context, final String dictType) { 38 super(dictType); 39 mContext = context; 40 } 41 42 abstract public void clear(); 43 44 /** 45 * Add a unigram with an optional shortcut to the dictionary. 46 * @param word The word to add. 47 * @param shortcutTarget A shortcut target for this word, or null if none. 48 * @param frequency The frequency for this unigram. 49 * @param shortcutFreq The frequency of the shortcut (0~15, with 15 = whitelist). Ignored 50 * if shortcutTarget is null. 51 * @param isNotAWord true if this is not a word, i.e. shortcut only. 52 */ 53 abstract public void addUnigramWord(final String word, final String shortcutTarget, 54 final int frequency, final int shortcutFreq, final boolean isNotAWord); 55 56 // TODO: Remove lastModifiedTime after making binary dictionary support forgetting curve. 57 abstract public void addBigramWords(final String word0, final String word1, 58 final int frequency, final boolean isValid, 59 final long lastModifiedTime); 60 61 abstract public void removeBigramWords(final String word0, final String word1); 62 63 abstract protected void writeDictionary(final DictEncoder dictEncoder, 64 final Map<String, String> attributeMap) throws IOException, UnsupportedFormatException; 65 66 public void write(final String fileName, final Map<String, String> attributeMap) { 67 final String tempFileName = fileName + ".temp"; 68 final File file = new File(mContext.getFilesDir(), fileName); 69 final File tempFile = new File(mContext.getFilesDir(), tempFileName); 70 try { 71 final DictEncoder dictEncoder = new Ver3DictEncoder(tempFile); 72 writeDictionary(dictEncoder, attributeMap); 73 tempFile.renameTo(file); 74 } catch (IOException e) { 75 Log.e(TAG, "IO exception while writing file", e); 76 } catch (UnsupportedFormatException e) { 77 Log.e(TAG, "Unsupported format", e); 78 } 79 } 80 } 81
