ConnectionWriter.h

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/*
 * SPDX-FileCopyrightText: 2006-2021 Istituto Italiano di Tecnologia (IIT)
 * SPDX-FileCopyrightText: 2006-2010 RobotCub Consortium
 * SPDX-License-Identifier: BSD-3-Clause
 */
 
#ifndef YARP_OS_CONNECTIONWRITER_H
#define YARP_OS_CONNECTIONWRITER_H
 
#include <yarp/conf/numeric.h>
 
#include <yarp/os/api.h>
 
#include <string>
 
namespace yarp::os {
class ConnectionReader;
class PortReader;
class PortWriter;
class Portable;
class SizedWriter;
class OutputStream;
} // namespace yarp::os
 
 
namespace yarp::os {
 
class YARP_os_API ConnectionWriter
{
public:
    virtual ~ConnectionWriter();
 
    virtual void appendBlock(const char* data, size_t len) = 0;
 
    virtual void appendInt8(std::int8_t data) = 0;
 
    virtual void appendInt16(std::int16_t data) = 0;
 
    virtual void appendInt32(std::int32_t data) = 0;
 
    virtual void appendInt64(std::int64_t data) = 0;
 
    virtual void appendFloat32(yarp::conf::float32_t data) = 0;
 
    virtual void appendFloat64(yarp::conf::float64_t data) = 0;
 
    virtual void appendText(const std::string& str, const char terminate = '\n') = 0;
 
    void appendString(const std::string& str)
    {
        appendInt32(static_cast<std::int32_t>(str.length()));
        appendBlock((char*)str.c_str(), str.length());
    }
 
    virtual void appendExternalBlock(const char* data, size_t len) = 0;
 
    virtual bool isTextMode() const = 0;
 
    virtual bool isBareMode() const = 0;
 
    virtual void declareSizes(int argc, int* argv) = 0;
 
    virtual void setReplyHandler(PortReader& reader) = 0;
 
    virtual void setReference(Portable* obj) = 0;
 
 
    virtual bool convertTextMode() = 0;
 
 
    virtual bool isValid() const = 0;
 
    virtual bool isActive() const = 0;
 
    virtual bool isError() const = 0;
 
 
    virtual void requestDrop() = 0;
 
    virtual bool isNull() const;
 
 
    virtual SizedWriter* getBuffer() = 0;
 
    virtual const SizedWriter* getBuffer() const = 0;
 
    static ConnectionWriter* createBufferedConnectionWriter();
 
    static bool writeToStream(PortWriter& portable, OutputStream& os);
};
 
} // namespace yarp::os
 
#endif // YARP_OS_CONNECTIONWRITER_H