00001 /* 00002 * Licensed to the Apache Software Foundation (ASF) under one or more 00003 * contributor license agreements. See the NOTICE file distributed with 00004 * this work for additional information regarding copyright ownership. 00005 * The ASF licenses this file to You under the Apache License, Version 2.0 00006 * (the "License"); you may not use this file except in compliance with 00007 * the License. You may obtain a copy of the License at 00008 * 00009 * http://www.apache.org/licenses/LICENSE-2.0 00010 * 00011 * Unless required by applicable law or agreed to in writing, software 00012 * distributed under the License is distributed on an "AS IS" BASIS, 00013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00014 * See the License for the specific language governing permissions and 00015 * limitations under the License. 00016 */ 00017 00018 #ifndef _DECAF_IO_BUFFEREDINPUTSTREAM_H_ 00019 #define _DECAF_IO_BUFFEREDINPUTSTREAM_H_ 00020 00021 #include <decaf/util/Config.h> 00022 #include <decaf/io/FilterInputStream.h> 00023 #include <decaf/lang/exceptions/IllegalArgumentException.h> 00024 00025 namespace decaf{ 00026 namespace io{ 00027 00034 class DECAF_API BufferedInputStream : public FilterInputStream { 00035 private: 00036 00037 int pos; 00038 int count; 00039 int markLimit; 00040 int markPos; 00041 int bufferSize; 00042 unsigned char* buff; 00043 00044 // Proxy to the actual buffer, when NULL it signals this stream is closed. 00045 // the actual buffer is deleted in the destructor. 00046 unsigned char* proxyBuffer; 00047 00048 private: 00049 00050 BufferedInputStream(const BufferedInputStream&); 00051 BufferedInputStream& operator=(const BufferedInputStream&); 00052 00053 public: 00054 00063 BufferedInputStream(InputStream* stream, bool own = false); 00064 00077 BufferedInputStream(InputStream* stream, int bufferSize, bool own = false); 00078 00079 virtual ~BufferedInputStream(); 00080 00084 virtual int available() const; 00085 00089 virtual void close(); 00090 00094 virtual long long skip(long long num); 00095 00099 virtual void mark(int readLimit); 00100 00104 virtual void reset(); 00105 00109 virtual bool markSupported() const { 00110 return true; 00111 } 00112 00113 protected: 00114 00115 virtual int doReadByte(); 00116 00117 virtual int doReadArrayBounded(unsigned char* buffer, int size, int offset, int length); 00118 00119 private: 00120 00121 int bufferData(InputStream* stream, unsigned char*& buffer); 00122 00123 }; 00124 00125 }} 00126 00127 #endif /*_DECAF_IO_BUFFEREDINPUTSTREAM_H_*/
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