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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 _THRIFT_PROTOCOL_TBINARYPROTOCOL_H_

#define _THRIFT_PROTOCOL_TBINARYPROTOCOL_H_ 1

#include "TProtocol.h"

#include <boost/shared_ptr.hpp>

namespace apache { namespace thrift { namespace protocol {

/**

 * The default binary protocol for thrift. Writes all data in a very basic

 * binary format, essentially just spitting out the raw bytes.

 *

 */

class TBinaryProtocol : public TProtocol {

 protected:

  static const int32_t VERSION_MASK = 0xffff0000;

  static const int32_t VERSION_1 = 0x80010000;

  // VERSION_2 (0x80020000)  is taken by TDenseProtocol.

 public:

  TBinaryProtocol(boost::shared_ptr<TTransport> trans) :

    TProtocol(trans),

    string_limit_(0),

    container_limit_(0),

    strict_read_(false),

    strict_write_(true),

    string_buf_(NULL),

    string_buf_size_(0) {}

  TBinaryProtocol(boost::shared_ptr<TTransport> trans,

                  int32_t string_limit,

                  int32_t container_limit,

                  bool strict_read,

                  bool strict_write) :

    TProtocol(trans),

    string_limit_(string_limit),

    container_limit_(container_limit),

    strict_read_(strict_read),

    strict_write_(strict_write),

    string_buf_(NULL),

    string_buf_size_(0) {}

  ~TBinaryProtocol() {

    if (string_buf_ != NULL) {

      std::free(string_buf_);

      string_buf_size_ = 0;

    }

  }

  void setStringSizeLimit(int32_t string_limit) {

    string_limit_ = string_limit;

  }

  void setContainerSizeLimit(int32_t container_limit) {

    container_limit_ = container_limit;

  }

  void setStrict(bool strict_read, bool strict_write) {

    strict_read_ = strict_read;

    strict_write_ = strict_write;

  }

  /**

   * Writing functions.

   */

  virtual uint32_t writeMessageBegin(const std::string& name,

                                     const TMessageType messageType,

                                     const int32_t seqid);

  virtual uint32_t writeMessageEnd();

  uint32_t writeStructBegin(const char* name);

  uint32_t writeStructEnd();

  uint32_t writeFieldBegin(const char* name,

                           const TType fieldType,

                           const int16_t fieldId);

  uint32_t writeFieldEnd();

  uint32_t writeFieldStop();

  uint32_t writeMapBegin(const TType keyType,

                         const TType valType,

                         const uint32_t size);

  uint32_t writeMapEnd();

  uint32_t writeListBegin(const TType elemType,

                          const uint32_t size);

  uint32_t writeListEnd();

  uint32_t writeSetBegin(const TType elemType,

                         const uint32_t size);

  uint32_t writeSetEnd();

  uint32_t writeBool(const bool value);

  uint32_t writeByte(const int8_t byte);

  uint32_t writeI16(const int16_t i16);

  uint32_t writeI32(const int32_t i32);

  uint32_t writeI64(const int64_t i64);

  uint32_t writeDouble(const double dub);

  uint32_t writeString(const std::string& str);

  uint32_t writeBinary(const std::string& str);

  /**

   * Reading functions

   */

  uint32_t readMessageBegin(std::string& name,

                            TMessageType& messageType,

                            int32_t& seqid);

  uint32_t readMessageEnd();

  uint32_t readStructBegin(std::string& name);

  uint32_t readStructEnd();

  uint32_t readFieldBegin(std::string& name,

                          TType& fieldType,

                          int16_t& fieldId);

  uint32_t readFieldEnd();

  uint32_t readMapBegin(TType& keyType,

                        TType& valType,

                        uint32_t& size);

  uint32_t readMapEnd();

  uint32_t readListBegin(TType& elemType,

                         uint32_t& size);

  uint32_t readListEnd();

  uint32_t readSetBegin(TType& elemType,

                        uint32_t& size);

  uint32_t readSetEnd();

  uint32_t readBool(bool& value);

  uint32_t readByte(int8_t& byte);

  uint32_t readI16(int16_t& i16);

  uint32_t readI32(int32_t& i32);

  uint32_t readI64(int64_t& i64);

  uint32_t readDouble(double& dub);

  uint32_t readString(std::string& str);

  uint32_t readBinary(std::string& str);

 protected:

  uint32_t readStringBody(std::string& str, int32_t sz);

  int32_t string_limit_;

  int32_t container_limit_;

  // Enforce presence of version identifier

  bool strict_read_;

  bool strict_write_;

  // Buffer for reading strings, save for the lifetime of the protocol to

  // avoid memory churn allocating memory on every string read

  uint8_t* string_buf_;

  int32_t string_buf_size_;

};

/**

 * Constructs binary protocol handlers

 */

class TBinaryProtocolFactory : public TProtocolFactory {

 public:

  TBinaryProtocolFactory() :

    string_limit_(0),

    container_limit_(0),

    strict_read_(false),

    strict_write_(true) {}

  TBinaryProtocolFactory(int32_t string_limit, int32_t container_limit, bool strict_read, bool strict_write) :

    string_limit_(string_limit),

    container_limit_(container_limit),

    strict_read_(strict_read),

    strict_write_(strict_write) {}

  virtual ~TBinaryProtocolFactory() {}

  void setStringSizeLimit(int32_t string_limit) {

    string_limit_ = string_limit;

  }

  void setContainerSizeLimit(int32_t container_limit) {

    container_limit_ = container_limit;

  }

  void setStrict(bool strict_read, bool strict_write) {

    strict_read_ = strict_read;

    strict_write_ = strict_write;

  }

  boost::shared_ptr<TProtocol> getProtocol(boost::shared_ptr<TTransport> trans) {

    return boost::shared_ptr<TProtocol>(new TBinaryProtocol(trans, string_limit_, container_limit_, strict_read_, strict_write_));

  }

 private:

  int32_t string_limit_;

  int32_t container_limit_;

  bool strict_read_;

  bool strict_write_;

};

}}} // apache::thrift::protocol

#endif // #ifndef _THRIFT_PROTOCOL_TBINARYPROTOCOL_H_