InputStream.h

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/*
 * 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_INPUTSTREAM_H_
#define _DECAF_IO_INPUTSTREAM_H_
 
#include <decaf/io/IOException.h>
#include <decaf/io/Closeable.h>
#include <decaf/util/concurrent/Synchronizable.h>
#include <decaf/util/concurrent/Mutex.h>
#include <decaf/lang/exceptions/UnsupportedOperationException.h>
#include <decaf/lang/exceptions/NullPointerException.h>
#include <decaf/lang/exceptions/IndexOutOfBoundsException.h>
#include <decaf/util/Config.h>
 
namespace decaf{
namespace io{
 
    class DECAF_API InputStream: public Closeable, virtual public util::concurrent::Synchronizable {
    private:
 
        // Synchronization object.
        util::concurrent::Mutex mutex;
 
    private:
 
        InputStream(const InputStream&);
        InputStream& operator=(const InputStream&);
 
    public:
 
        InputStream();
 
        virtual ~InputStream();
 
        virtual void close();
 
        virtual void mark(int readLimit);
 
        virtual void reset();
 
        virtual bool markSupported() const {
            return false;
        }
 
        virtual int available() const {
            return 0;
        }
 
        virtual int read();
 
        virtual int read(unsigned char* buffer, int size);
 
        virtual int read(unsigned char* buffer, int size, int offset, int length);
 
        virtual long long skip(long long num);
 
        virtual std::string toString() const;
 
    protected: // Virtual doRead methods that can be overridden to customize subclasses.
 
        virtual int doReadByte() = 0;
 
        virtual int doReadArray(unsigned char* buffer, int size);
 
        virtual int doReadArrayBounded(unsigned char* buffer, int size, int offset, int length);
 
    public: // Synchronizable
 
        virtual void lock() {
            mutex.lock();
        }
 
        virtual bool tryLock() {
            return mutex.tryLock();
        }
 
        virtual void unlock() {
            mutex.unlock();
        }
 
        virtual void wait() {
            mutex.wait();
        }
 
        virtual void wait(long long millisecs) {
            mutex.wait(millisecs);
        }
 
        virtual void wait(long long millisecs, int nanos) {
            mutex.wait(millisecs, nanos);
        }
 
        virtual void notify() {
            mutex.notify();
        }
 
        virtual void notifyAll() {
            mutex.notifyAll();
        }
 
    };
 
}}
 
#endif /*_DECAF_IO_INPUTSTREAM_H_*/