Fix two strict mode warnings.

Bug: 9052555
Change-Id: I86e90488679a78a9f6e901b640025619293765a0

java/src/com/android/inputmethod/dictionarypack/MetadataDbHelper.java

@@ -572,7 +572,8 @@ public class MetadataDbHelper extends SQLiteOpenHelper {
      * If several clients use the same metadata URL, we know to only download it once, and
      * dispatch the update process across all relevant clients when the download ends. This means
      * several clients may share a single download ID if they share a metadata URI.
-     * The dispatching is done in {@link UpdateHandler#downloadFinished(Context, Intent)}, which
+     * The dispatching is done in
+     * {@link UpdateHandler#downloadFinished(Context, android.content.Intent)}, which
      * finds out about the list of relevant clients by calling this method.
      *
      * @param context a context instance to open the databases
@@ -863,17 +864,20 @@ public class MetadataDbHelper extends SQLiteOpenHelper {
                                 r.getAsString(WORDLISTID_COLUMN),
                                 Integer.toString(STATUS_INSTALLED) },
                         null, null, null);
+                try {
                     if (c.moveToFirst()) {
                         // There should never be more than one file, but if there are, it's a bug
-                    // and we should remove them all. I think it might happen if the power of the
+                        // and we should remove them all. I think it might happen if the power of
-                    // phone is suddenly cut during an update.
+                        // the phone is suddenly cut during an update.
                         final int filenameIndex = c.getColumnIndex(LOCAL_FILENAME_COLUMN);
                         do {
                             Utils.l("Setting for removal", c.getString(filenameIndex));
                             filenames.add(c.getString(filenameIndex));
                         } while (c.moveToNext());
                     }
-
+                } finally {
+                    c.close();
+                }
                 r.put(STATUS_COLUMN, STATUS_INSTALLED);
                 db.beginTransactionNonExclusive();
                 // Delete all old entries. There should never be any stalled entries, but if

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

@@ -32,6 +32,7 @@ import com.android.inputmethod.latin.DictionaryInfoUtils.DictionaryInfo;
 
 import java.io.BufferedInputStream;
 import java.io.BufferedOutputStream;
+import java.io.Closeable;
 import java.io.File;
 import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
@@ -319,20 +320,12 @@ public final class BinaryDictionaryFileDumper {
                 // Try the next method.
             } finally {
                 // Ignore exceptions while closing files.
-                try {
+                closeAssetFileDescriptorAndReportAnyException(afd);
-                    if (null != afd) afd.close();
+                closeCloseableAndReportAnyException(inputStream);
-                    if (null != inputStream) inputStream.close();
+                closeCloseableAndReportAnyException(uncompressedStream);
-                    if (null != uncompressedStream) uncompressedStream.close();
+                closeCloseableAndReportAnyException(decryptedStream);
-                    if (null != decryptedStream) decryptedStream.close();
+                closeCloseableAndReportAnyException(bufferedInputStream);
-                    if (null != bufferedInputStream) bufferedInputStream.close();
+                closeCloseableAndReportAnyException(bufferedOutputStream);
-                } catch (Exception e) {
-                    Log.e(TAG, "Exception while closing a file descriptor", e);
-                }
-                try {
-                    if (null != bufferedOutputStream) bufferedOutputStream.close();
-                } catch (Exception e) {
-                    Log.e(TAG, "Exception while closing a file", e);
-                }
             }
         }
 
@@ -352,6 +345,26 @@ public final class BinaryDictionaryFileDumper {
         }
     }
 
+    // Ideally the two following methods should be merged, but AssetFileDescriptor does not
+    // implement Closeable although it does implement #close(), and Java does not have
+    // structural typing.
+    private static void closeAssetFileDescriptorAndReportAnyException(
+            final AssetFileDescriptor file) {
+        try {
+            if (null != file) file.close();
+        } catch (Exception e) {
+            Log.e(TAG, "Exception while closing a file", e);
+        }
+    }
+
+    private static void closeCloseableAndReportAnyException(final Closeable file) {
+        try {
+            if (null != file) file.close();
+        } catch (Exception e) {
+            Log.e(TAG, "Exception while closing a file", e);
+        }
+    }
+
     /**
      * Queries a content provider for word list data for some locale and cache the returned files
      *