| using Lucene.Net.Diagnostics; |
| |
| namespace Lucene.Net.Store |
| { |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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. |
| */ |
| |
| using BytesRef = Lucene.Net.Util.BytesRef; |
| |
| /// <summary> |
| /// DataOutput backed by a byte array. |
| /// <b>WARNING:</b> this class omits most low-level checks, |
| /// so be sure to test heavily with assertions enabled. |
| /// <para/> |
| /// @lucene.experimental |
| /// </summary> |
| public class ByteArrayDataOutput : DataOutput |
| { |
| private byte[] bytes; |
| |
| private int pos; |
| private int limit; |
| |
| public ByteArrayDataOutput(byte[] bytes) |
| { |
| Reset(bytes); |
| } |
| |
| public ByteArrayDataOutput(byte[] bytes, int offset, int len) |
| { |
| Reset(bytes, offset, len); |
| } |
| |
| public ByteArrayDataOutput() |
| { |
| Reset(BytesRef.EMPTY_BYTES); |
| } |
| |
| public virtual void Reset(byte[] bytes) |
| { |
| Reset(bytes, 0, bytes.Length); |
| } |
| |
| public virtual void Reset(byte[] bytes, int offset, int len) |
| { |
| this.bytes = bytes; |
| pos = offset; |
| limit = offset + len; |
| } |
| |
| public virtual int Position => pos; |
| |
| public override void WriteByte(byte b) |
| { |
| if (Debugging.AssertsEnabled) Debugging.Assert(pos < limit); |
| bytes[pos++] = b; |
| } |
| |
| public override void WriteBytes(byte[] b, int offset, int length) |
| { |
| if (Debugging.AssertsEnabled) Debugging.Assert(pos + length <= limit); |
| System.Buffer.BlockCopy(b, offset, bytes, pos, length); |
| pos += length; |
| } |
| } |
| } |