1 /* 2 * Copyright (C) 2013 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.inputmethod.latin.utils; 18 19 import com.android.inputmethod.latin.makedict.BinaryDictDecoderUtils.DictBuffer; 20 21 /** 22 * This class provides an implementation for the FusionDictionary buffer interface that is backed 23 * by a simpled byte array. It allows to create a binary dictionary in memory. 24 */ 25 public final class ByteArrayDictBuffer implements DictBuffer { 26 private byte[] mBuffer; 27 private int mPosition; 28 29 public ByteArrayDictBuffer(final byte[] buffer) { 30 mBuffer = buffer; 31 mPosition = 0; 32 } 33 34 @Override 35 public int readUnsignedByte() { 36 return mBuffer[mPosition++] & 0xFF; 37 } 38 39 @Override 40 public int readUnsignedShort() { 41 final int retval = readUnsignedByte(); 42 return (retval << 8) + readUnsignedByte(); 43 } 44 45 @Override 46 public int readUnsignedInt24() { 47 final int retval = readUnsignedShort(); 48 return (retval << 8) + readUnsignedByte(); 49 } 50 51 @Override 52 public int readInt() { 53 final int retval = readUnsignedShort(); 54 return (retval << 16) + readUnsignedShort(); 55 } 56 57 @Override 58 public int position() { 59 return mPosition; 60 } 61 62 @Override 63 public void position(int position) { 64 mPosition = position; 65 } 66 67 @Override 68 public void put(final byte b) { 69 mBuffer[mPosition++] = b; 70 } 71 72 @Override 73 public int limit() { 74 return mBuffer.length - 1; 75 } 76 77 @Override 78 public int capacity() { 79 return mBuffer.length; 80 } 81 } 82
