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      1 /*
      2  * Copyright (C) 2014 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 java.io.File;
     20 import java.math.BigDecimal;
     21 import java.util.Locale;
     22 
     23 import javax.annotation.Nonnull;
     24 import javax.annotation.Nullable;
     25 
     26 public class DictionaryStats {
     27     public static final int NOT_AN_ENTRY_COUNT = -1;
     28 
     29     public final Locale mLocale;
     30     public final String mDictType;
     31     public final String mDictFileName;
     32     public final long mDictFileSize;
     33     public final int mContentVersion;
     34     public final int mWordCount;
     35 
     36     public DictionaryStats(
     37             @Nonnull final Locale locale,
     38             @Nonnull final String dictType,
     39             @Nullable final String dictFileName,
     40             @Nullable final File dictFile,
     41             final int contentVersion) {
     42         mLocale = locale;
     43         mDictType = dictType;
     44         mDictFileSize = (dictFile == null || !dictFile.exists()) ? 0 : dictFile.length();
     45         mDictFileName = dictFileName;
     46         mContentVersion = contentVersion;
     47         mWordCount = -1;
     48     }
     49 
     50     public DictionaryStats(
     51             @Nonnull final Locale locale,
     52             @Nonnull final String dictType,
     53             final int wordCount) {
     54         mLocale = locale;
     55         mDictType = dictType;
     56         mDictFileSize = wordCount;
     57         mDictFileName = null;
     58         mContentVersion = 0;
     59         mWordCount = wordCount;
     60     }
     61 
     62     public String getFileSizeString() {
     63         BigDecimal bytes = new BigDecimal(mDictFileSize);
     64         BigDecimal kb = bytes.divide(new BigDecimal(1024), 2, BigDecimal.ROUND_HALF_UP);
     65         if (kb.longValue() == 0) {
     66             return bytes.toString() + " bytes";
     67         }
     68         BigDecimal mb = kb.divide(new BigDecimal(1024), 2, BigDecimal.ROUND_HALF_UP);
     69         if (mb.longValue() == 0) {
     70             return kb.toString() + " kb";
     71         }
     72         return mb.toString() + " Mb";
     73     }
     74 
     75     @Override
     76     public String toString() {
     77         final StringBuilder builder = new StringBuilder(mDictType);
     78         if (mDictType.equals(Dictionary.TYPE_MAIN)) {
     79             builder.append(" (");
     80             builder.append(mContentVersion);
     81             builder.append(")");
     82         }
     83         builder.append(": ");
     84         if (mWordCount > -1) {
     85             builder.append(mWordCount);
     86             builder.append(" words");
     87         } else {
     88             builder.append(mDictFileName);
     89             builder.append(" / ");
     90             builder.append(getFileSizeString());
     91         }
     92         return builder.toString();
     93     }
     94 
     95     public static String toString(final Iterable<DictionaryStats> stats) {
     96         final StringBuilder builder = new StringBuilder("LM Stats");
     97         for (DictionaryStats stat : stats) {
     98             builder.append("\n    ");
     99             builder.append(stat.toString());
    100         }
    101         return builder.toString();
    102     }
    103 }
    104