MemoryOutputStream.hh

/**
 * 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 ORC_MEMORYOUTPUTSTREAM_HH
#define ORC_MEMORYOUTPUTSTREAM_HH

#include "orc/OrcFile.hh"
#include "io/OutputStream.hh"

#include <iostream>

namespace orc {

  class MemoryOutputStream : public OutputStream {
  public:
    MemoryOutputStream(ssize_t capacity) : name("MemoryOutputStream") {
      data = new char[capacity];
      length = 0;
    }

    virtual ~MemoryOutputStream() override;

    virtual uint64_t getLength() const override {
      return length;
    }

    virtual uint64_t getNaturalWriteSize() const override {
      return naturalWriteSize;
    }

    virtual void write(const void* buf, size_t size) override;

    virtual const std::string& getName() const override {
      return name;
    }

    const char * getData() const {
      return data;
    }

    void close() override {
    }

    void reset()  {
      length = 0;
    }

  private:
    char * data;
    std::string name;
    uint64_t length, naturalWriteSize;
  };
}

#endif