Move a couple classes to the utils package

Change-Id: Ia14a2011d79bad7cd02697b9254705f6e2099442

1 files changed, 81 insertions, 0 deletions

diff --git a/java/src/com/android/inputmethod/latin/utils/ByteArrayWrapper.java b/java/src/com/android/inputmethod/latin/utils/ByteArrayWrapper.java
new file mode 100644
index 000000000..1bb27aa2b
--- /dev/null
+++ b/java/src/com/android/inputmethod/latin/utils/ByteArrayWrapper.java
@@ -0,0 +1,81 @@
+/*
+ * 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.utils;
+
+import com.android.inputmethod.latin.makedict.BinaryDictInputOutput.FusionDictionaryBufferInterface;
+
+/**
+ * This class provides an implementation for the FusionDictionary buffer interface that is backed
+ * by a simpled byte array. It allows to create a binary dictionary in memory.
+ */
+public final class ByteArrayWrapper implements FusionDictionaryBufferInterface {
+    private byte[] mBuffer;
+    private int mPosition;
+
+    public ByteArrayWrapper(final byte[] buffer) {
+        mBuffer = buffer;
+        mPosition = 0;
+    }
+
+    @Override
+    public int readUnsignedByte() {
+        return mBuffer[mPosition++] & 0xFF;
+    }
+
+    @Override
+    public int readUnsignedShort() {
+        final int retval = readUnsignedByte();
+        return (retval << 8) + readUnsignedByte();
+    }
+
+    @Override
+    public int readUnsignedInt24() {
+        final int retval = readUnsignedShort();
+        return (retval << 8) + readUnsignedByte();
+    }
+
+    @Override
+    public int readInt() {
+        final int retval = readUnsignedShort();
+        return (retval << 16) + readUnsignedShort();
+    }
+
+    @Override
+    public int position() {
+        return mPosition;
+    }
+
+    @Override
+    public void position(int position) {
+        mPosition = position;
+    }
+
+    @Override
+    public void put(final byte b) {
+        mBuffer[mPosition++] = b;
+    }
+
+    @Override
+    public int limit() {
+        return mBuffer.length - 1;
+    }
+
+    @Override
+    public int capacity() {
+        return mBuffer.length;
+    }
+}