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| | | // Copyright (C) 2014 Tom <tw201207@gmail.com> |
| | | // |
| | | // 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.gitblit.utils; |
| | | |
| | | import java.io.ByteArrayOutputStream; |
| | | |
| | | /** |
| | | * A {@link ByteArrayOutputStream} that can be reset to a specified position. |
| | | * |
| | | * @author Tom <tw201207@gmail.com> |
| | | */ |
| | | public class ResettableByteArrayOutputStream extends ByteArrayOutputStream { |
| | | |
| | | /** |
| | | * Reset the stream to the given position. If {@code mark} is <= 0, see {@link #reset()}. |
| | | * A no-op if the stream contains less than {@code mark} bytes. Otherwise, resets the |
| | | * current writing position to {@code mark}. Previously allocated buffer space will be |
| | | * reused in subsequent writes. |
| | | * |
| | | * @param mark |
| | | * to set the current writing position to. |
| | | */ |
| | | public synchronized void resetTo(int mark) { |
| | | if (mark <= 0) { |
| | | reset(); |
| | | } else if (mark < count) { |
| | | count = mark; |
| | | } |
| | | } |
| | | |
| | | } |