Change DictionaryStats to report content version.

Bug 19908719.

Change-Id: I5a00b5277e9cd7d964b53ff5823bada21be110fa

java/src/com/android/inputmethod/latin/DictionaryFacilitator.java

@@ -17,7 +17,6 @@
 package com.android.inputmethod.latin;
 
 import android.content.Context;
-import android.util.Pair;
 
 import com.android.inputmethod.annotations.UsedForTesting;
 import com.android.inputmethod.keyboard.Keyboard;
@@ -28,6 +27,7 @@ import com.android.inputmethod.latin.utils.SuggestionResults;
 import java.io.File;
 import java.util.ArrayList;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Locale;
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
@@ -172,5 +172,5 @@ public interface DictionaryFacilitator {
 
     void dumpDictionaryForDebug(final String dictName);
 
-    ArrayList<Pair<String, DictionaryStats>> getStatsOfEnabledSubDicts();
+    @Nonnull List<DictionaryStats> getDictionaryStats(final Context context);
 }

java/src/com/android/inputmethod/latin/DictionaryFacilitatorImpl.java

@@ -19,7 +19,6 @@ package com.android.inputmethod.latin;
 import android.content.Context;
 import android.text.TextUtils;
 import android.util.Log;
-import android.util.Pair;
 
 import com.android.inputmethod.annotations.UsedForTesting;
 import com.android.inputmethod.keyboard.Keyboard;
@@ -39,6 +38,7 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.HashSet;
+import java.util.List;
 import java.util.Locale;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
@@ -644,12 +644,12 @@ public class DictionaryFacilitatorImpl implements DictionaryFacilitator {
     }
 
     @Override
-    public ArrayList<Pair<String, DictionaryStats>> getStatsOfEnabledSubDicts() {
+    @Nonnull public List<DictionaryStats> getDictionaryStats(final Context context) {
-        final ArrayList<Pair<String, DictionaryStats>> statsOfEnabledSubDicts = new ArrayList<>();
+        final ArrayList<DictionaryStats> statsOfEnabledSubDicts = new ArrayList<>();
         for (final String dictType : DYNAMIC_DICTIONARY_TYPES) {
             final ExpandableBinaryDictionary dictionary = mDictionaryGroup.getSubDict(dictType);
             if (dictionary == null) continue;
-            statsOfEnabledSubDicts.add(new Pair<>(dictType, dictionary.getDictionaryStats()));
+            statsOfEnabledSubDicts.add(dictionary.getDictionaryStats());
         }
         return statsOfEnabledSubDicts;
     }

java/src/com/android/inputmethod/latin/DictionaryStats.java

@@ -17,6 +17,7 @@
 package com.android.inputmethod.latin;
 
 import java.io.File;
+import java.math.BigDecimal;
 import java.util.Locale;
 
 public class DictionaryStats {
@@ -26,18 +27,54 @@ public class DictionaryStats {
     public final String mDictName;
     public final String mDictFilePath;
     public final long mDictFileSize;
-
+    public final int mContentVersion;
-    public final int mUnigramCount;
-    public final int mNgramCount;
-    // TODO: Add more members.
 
     public DictionaryStats(final Locale locale, final String dictName, final File dictFile,
-            final int unigramCount, final int ngramCount) {
+            final int contentVersion) {
         mLocale = locale;
         mDictName = dictName;
-        mDictFilePath = dictFile.getAbsolutePath();
+        mDictFilePath = (dictFile == null) ? null : dictFile.getName();
-        mDictFileSize = dictFile.length();
+        mDictFileSize = (dictFile == null || !dictFile.exists()) ? 0 : dictFile.length();
-        mUnigramCount = unigramCount;
+        mContentVersion = contentVersion;
-        mNgramCount = ngramCount;
+    }
+
+    public String getFileSizeString() {
+        if (mDictFileSize == 0) {
+            return "0";
+        }
+        BigDecimal bytes = new BigDecimal(mDictFileSize);
+        BigDecimal kb = bytes.divide(new BigDecimal(1024), 2, BigDecimal.ROUND_HALF_UP);
+        if (kb.longValue() == 0) {
+            return bytes.toString() + " bytes";
+        }
+        BigDecimal mb = kb.divide(new BigDecimal(1024), 2, BigDecimal.ROUND_HALF_UP);
+        if (mb.longValue() == 0) {
+            return kb.toString() + " kb";
+        }
+        return mb.toString() + " Mb";
+    }
+
+    @Override
+    public String toString() {
+        final StringBuilder builder = new StringBuilder(mDictName);
+        if (mDictName.equals(Dictionary.TYPE_MAIN)) {
+            builder.append(" (");
+            builder.append(mContentVersion);
+            builder.append(")");
+        }
+        builder.append(": ");
+        builder.append(mDictFilePath);
+        builder.append(" / ");
+        builder.append(getFileSizeString());
+        return builder.toString();
+    }
+
+    public static String toString(final Iterable<DictionaryStats> stats) {
+        final StringBuilder builder = new StringBuilder("LM Stats");
+        for (DictionaryStats stat : stats) {
+            builder.append("\n    ");
+            builder.append(stat.toString());
+        }
+        return builder.toString();
     }
 }

java/src/com/android/inputmethod/latin/ExpandableBinaryDictionary.java

@@ -646,16 +646,6 @@ abstract public class ExpandableBinaryDictionary extends Dictionary {
         });
     }
 
-    static int parseEntryCount(final String entryCountStr) {
-        int entryCount;
-        try {
-            entryCount = Integer.parseInt(entryCountStr);
-        } catch (final NumberFormatException e) {
-            entryCount = DictionaryStats.NOT_AN_ENTRY_COUNT;
-        }
-        return entryCount;
-    }
-
     public DictionaryStats getDictionaryStats() {
         reloadDictionaryIfRequired();
         final String dictName = mDictName;
@@ -664,22 +654,7 @@ abstract public class ExpandableBinaryDictionary extends Dictionary {
         asyncExecuteTaskWithLock(mLock.readLock(), new Runnable() {
             @Override
             public void run() {
-                final BinaryDictionary binaryDictionary = getBinaryDictionary();
+                result.set(new DictionaryStats(mLocale, dictName, dictFile, 0));
-                if (binaryDictionary == null) {
-                    result.set(new DictionaryStats(mLocale, dictName, dictFile,
-                            DictionaryStats.NOT_AN_ENTRY_COUNT,
-                            DictionaryStats.NOT_AN_ENTRY_COUNT));
-                    return;
-                }
-                final int unigramCount = parseEntryCount(
-                        binaryDictionary.getPropertyForGettingStats(
-                                BinaryDictionary.MAX_UNIGRAM_COUNT_QUERY));
-                // TODO: Get dedicated entry counts for bigram, trigram, and so on.
-                final int ngramCount = parseEntryCount(binaryDictionary.getPropertyForGettingStats(
-                        BinaryDictionary.MAX_BIGRAM_COUNT_QUERY));
-                // TODO: Get more information from dictionary.
-                result.set(new DictionaryStats(mLocale, dictName, dictFile, unigramCount,
-                        ngramCount));
             }
         });
         return result.get(null /* defaultValue */, TIMEOUT_FOR_READ_OPS_IN_MILLISECONDS);