1 files changed, 82 insertions, 0 deletions
diff --git a/java/src/com/android/inputmethod/latin/makedict/Ver2DictUpdater.java b/java/src/com/android/inputmethod/latin/makedict/Ver2DictUpdater.java
new file mode 100644
index 000000000..6419340ff
--- /dev/null
+++ b/java/src/com/android/inputmethod/latin/makedict/Ver2DictUpdater.java
@@ -0,0 +1,82 @@
+/*
+ * 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.makedict;
+
+import com.android.inputmethod.annotations.UsedForTesting;
+import com.android.inputmethod.latin.makedict.FusionDictionary.WeightedString;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.util.ArrayList;
+
+/**
+ * An implementation of DictUpdater for version 2 binary dictionary.
+ */
+@UsedForTesting
+public class Ver2DictUpdater extends Ver2DictDecoder implements DictUpdater {
+    private OutputStream mOutStream;
+
+    @UsedForTesting
+    public Ver2DictUpdater(final File dictFile, final int factoryType) {
+        // DictUpdater must have an updatable DictBuffer.
+        super(dictFile, ((factoryType & MASK_DICTBUFFER) == USE_BYTEARRAY)
+                ? USE_BYTEARRAY : USE_WRITABLE_BYTEBUFFER);
+        mOutStream = null;
+    }
+
+    private void openStreamAndBuffer() throws FileNotFoundException, IOException {
+        super.openDictBuffer();
+        mOutStream = new FileOutputStream(mDictionaryBinaryFile, true /* append */);
+    }
+
+    private void close() throws IOException {
+        if (mOutStream != null) {
+            mOutStream.close();
+            mOutStream = null;
+        }
+    }
+
+    @Override @UsedForTesting
+    public void deleteWord(final String word) throws IOException, UnsupportedFormatException {
+        if (mOutStream == null) openStreamAndBuffer();
+        mDictBuffer.position(0);
+        readHeader();
+        final int wordPos = getTerminalPosition(word);
+        if (wordPos != FormatSpec.NOT_VALID_WORD) {
+            mDictBuffer.position(wordPos);
+            final int flags = mDictBuffer.readUnsignedByte();
+            mDictBuffer.position(wordPos);
+            mDictBuffer.put((byte) DynamicBinaryDictIOUtils.markAsDeleted(flags));
+        }
+        close();
+    }
+
+    @Override @UsedForTesting
+    public void insertWord(final String word, final int frequency,
+            final ArrayList<WeightedString> bigramStrings,
+            final ArrayList<WeightedString> shortcuts,
+            final boolean isNotAWord, final boolean isBlackListEntry)
+                    throws IOException, UnsupportedFormatException {
+        if (mOutStream == null) openStreamAndBuffer();
+        DynamicBinaryDictIOUtils.insertWord(this, mOutStream, word, frequency, bigramStrings,
+                shortcuts, isNotAWord, isBlackListEntry);
+        close();
+    }
+}