| /* |
| * 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. |
| */ |
| |
| #ifndef _DECAF_IO_BUFFEREDOUTPUTSTREAM_H_ |
| #define _DECAF_IO_BUFFEREDOUTPUTSTREAM_H_ |
| |
| #include <decaf/io/FilterOutputStream.h> |
| #include <decaf/lang/exceptions/IllegalArgumentException.h> |
| |
| namespace decaf{ |
| namespace io{ |
| |
| /** |
| * Wrapper around another output stream that buffers |
| * output before writing to the target output stream. |
| */ |
| class DECAF_API BufferedOutputStream: public FilterOutputStream { |
| private: |
| |
| /** |
| * The internal buffer. |
| */ |
| unsigned char* buffer; |
| |
| /** |
| * The size of the internal buffer. |
| */ |
| int bufferSize; |
| |
| /** |
| * The current head of the buffer. |
| */ |
| int head; |
| |
| /** |
| * The current tail of the buffer. |
| */ |
| int tail; |
| |
| private: |
| |
| BufferedOutputStream(const BufferedOutputStream&); |
| BufferedOutputStream& operator=(const BufferedOutputStream&); |
| |
| public: |
| |
| /** |
| * Constructor. |
| * |
| * @param stream |
| * The target output stream. |
| * @param own |
| * Indicates if this class owns the stream pointer. |
| */ |
| BufferedOutputStream(OutputStream* stream, bool own = false); |
| |
| /** |
| * Constructor. |
| * |
| * @param stream |
| * The target output stream. |
| * @param bufferSize |
| * The size for the internal buffer. |
| * @param own |
| * Indicates if this class owns the stream pointer. |
| * |
| * @throws IllegalArgumentException if the bufferSize given is negative. |
| */ |
| BufferedOutputStream(OutputStream* stream, int bufferSize, bool own = false); |
| |
| virtual ~BufferedOutputStream(); |
| |
| /** |
| * @{inheritDoc} |
| */ |
| virtual void flush(); |
| |
| protected: |
| |
| virtual void doWriteByte(unsigned char c); |
| |
| virtual void doWriteArray(const unsigned char* buffer, int size); |
| |
| virtual void doWriteArrayBounded(const unsigned char* buffer, int size, int offset, int length); |
| |
| private: |
| |
| /** |
| * Initializes the internal structures. |
| * |
| * @param bufferSize |
| * How large to make the initial buffer when creating it. |
| */ |
| void init(int bufferSize); |
| |
| /** |
| * Writes the contents of the buffer to the output stream. |
| */ |
| void emptyBuffer(); |
| |
| }; |
| |
| }} |
| |
| #endif /*_DECAF_IO_BUFFEREDOUTPUTSTREAM_H_*/ |