Add DictEncoder.

Change-Id: I41049b9118b58838e5dedf8e5618d939ca70c5ef

1 files changed, 68 insertions, 0 deletions

diff --git a/java/src/com/android/inputmethod/latin/makedict/Ver3DictEncoder.java b/java/src/com/android/inputmethod/latin/makedict/Ver3DictEncoder.java
new file mode 100644
index 000000000..e81fd4514
--- /dev/null
+++ b/java/src/com/android/inputmethod/latin/makedict/Ver3DictEncoder.java
@@ -0,0 +1,68 @@
+/*
+ * 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.latin.makedict.FormatSpec.FormatOptions;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+
+/**
+ * An implementation of DictEncoder for version 3 binary dictionary.
+ */
+public class Ver3DictEncoder implements DictEncoder {
+
+    private final File mDictFile;
+    private OutputStream mOutStream;
+
+    public Ver3DictEncoder(final File dictFile) {
+        mDictFile = dictFile;
+        mOutStream = null;
+    }
+
+    // This constructor is used only by BinaryDictOffdeviceUtilsTests.
+    // If you want to use this in the production code, you should consider keeping consistency of
+    // the interface of Ver3DictDecoder by using factory.
+    public Ver3DictEncoder(final OutputStream outStream) {
+        mDictFile = null;
+        mOutStream = outStream;
+    }
+
+    private void openStream() throws FileNotFoundException {
+        mOutStream = new FileOutputStream(mDictFile);
+    }
+
+    private void close() throws IOException {
+        if (mOutStream != null) {
+            mOutStream.close();
+            mOutStream = null;
+        }
+    }
+
+    @Override
+    public void writeDictionary(FusionDictionary dict, FormatOptions formatOptions)
+            throws IOException, UnsupportedFormatException {
+        if (mOutStream == null) {
+            openStream();
+        }
+        BinaryDictEncoderUtils.writeDictionaryBinary(mOutStream, dict, formatOptions);
+        close();
+    }
+}