messagebuffer.h

/*
 * 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 _LOG4CXX_MESSAGE_BUFFER_H
#define _LOG4CXX_MESSAGE_BUFFER_H

#include <log4cxx/log4cxx.h>
#include <log4cxx/logstring.h>
#include <sstream>

#if defined(_MSC_VER)
    #pragma warning ( push )
    #pragma warning ( disable: 4251 4275 )
#endif

namespace log4cxx
{


namespace helpers
{

void MessageBufferUseStaticStream();

typedef std::ios_base& (*ios_base_manip)(std::ios_base&);

class LOG4CXX_EXPORT CharMessageBuffer
{
    public:
        CharMessageBuffer();
        ~CharMessageBuffer();


        CharMessageBuffer& operator<<(const std::basic_string<char>& msg);
        CharMessageBuffer& operator<<(const char* msg);
        CharMessageBuffer& operator<<(char* msg);

        CharMessageBuffer& operator<<(const char msg);

        std::ostream& operator<<(ios_base_manip manip);
        std::ostream& operator<<(bool val);

        std::ostream& operator<<(short val);
        std::ostream& operator<<(int val);
        std::ostream& operator<<(unsigned int val);
        std::ostream& operator<<(long val);
        std::ostream& operator<<(unsigned long val);
        std::ostream& operator<<(float val);
        std::ostream& operator<<(double val);
        std::ostream& operator<<(long double val);
        std::ostream& operator<<(void* val);

        operator std::basic_ostream<char>& ();

        const std::basic_string<char>& str(std::basic_ostream<char>& os);

        const std::basic_string<char>& str(CharMessageBuffer& buf);

        bool hasStream() const;

    private:
        CharMessageBuffer(const CharMessageBuffer&);
        CharMessageBuffer& operator=(const CharMessageBuffer&);

        std::basic_string<char> buf;
        std::basic_ostringstream<char>* stream;
};

template<class V>
std::basic_ostream<char>& operator<<(CharMessageBuffer& os, const V& val)
{
    return ((std::basic_ostream<char>&) os) << val;
}

#if LOG4CXX_UNICHAR_API || LOG4CXX_CFSTRING_API || LOG4CXX_LOGCHAR_IS_UNICHAR

class LOG4CXX_EXPORT UniCharMessageBuffer
{
    public:
        UniCharMessageBuffer();
        ~UniCharMessageBuffer();

        typedef std::basic_ostream<UniChar> uostream;


        UniCharMessageBuffer& operator<<(const std::basic_string<UniChar>& msg);
        UniCharMessageBuffer& operator<<(const UniChar* msg);
        UniCharMessageBuffer& operator<<(UniChar* msg);

        UniCharMessageBuffer& operator<<(const UniChar msg);

#if LOG4CXX_CFSTRING_API

        UniCharMessageBuffer& operator<<(const CFStringRef& msg);
#endif

        uostream& operator<<(ios_base_manip manip);
        uostream& operator<<(bool val);

        uostream& operator<<(short val);
        uostream& operator<<(int val);
        uostream& operator<<(unsigned int val);
        uostream& operator<<(long val);
        uostream& operator<<(unsigned long val);
        uostream& operator<<(float val);
        uostream& operator<<(double val);
        uostream& operator<<(long double val);
        uostream& operator<<(void* val);


        operator uostream& ();

        const std::basic_string<UniChar>& str(uostream& os);

        const std::basic_string<UniChar>& str(UniCharMessageBuffer& buf);

        bool hasStream() const;

    private:
        UniCharMessageBuffer(const UniCharMessageBuffer&);
        UniCharMessageBuffer& operator=(const UniCharMessageBuffer&);

        std::basic_string<UniChar> buf;
        std::basic_ostringstream<UniChar>* stream;
};

template<class V>
UniCharMessageBuffer::uostream& operator<<(UniCharMessageBuffer& os, const V& val)
{
    return ((UniCharMessageBuffer::uostream&) os) << val;
}
#endif

#if LOG4CXX_WCHAR_T_API

class LOG4CXX_EXPORT WideMessageBuffer
{
    public:
        WideMessageBuffer();
        ~WideMessageBuffer();


        WideMessageBuffer& operator<<(const std::basic_string<wchar_t>& msg);
        WideMessageBuffer& operator<<(const wchar_t* msg);
        WideMessageBuffer& operator<<(wchar_t* msg);

        WideMessageBuffer& operator<<(const wchar_t msg);

        std::basic_ostream<wchar_t>& operator<<(ios_base_manip manip);
        std::basic_ostream<wchar_t>& operator<<(bool val);

        std::basic_ostream<wchar_t>& operator<<(short val);
        std::basic_ostream<wchar_t>& operator<<(int val);
        std::basic_ostream<wchar_t>& operator<<(unsigned int val);
        std::basic_ostream<wchar_t>& operator<<(long val);
        std::basic_ostream<wchar_t>& operator<<(unsigned long val);
        std::basic_ostream<wchar_t>& operator<<(float val);
        std::basic_ostream<wchar_t>& operator<<(double val);
        std::basic_ostream<wchar_t>& operator<<(long double val);
        std::basic_ostream<wchar_t>& operator<<(void* val);


        operator std::basic_ostream<wchar_t>& ();

        const std::basic_string<wchar_t>& str(std::basic_ostream<wchar_t>& os);

        const std::basic_string<wchar_t>& str(WideMessageBuffer& buf);

        bool hasStream() const;

    private:
        WideMessageBuffer(const WideMessageBuffer&);
        WideMessageBuffer& operator=(const WideMessageBuffer&);

        std::basic_string<wchar_t> buf;
        std::basic_ostringstream<wchar_t>* stream;
};

template<class V>
std::basic_ostream<wchar_t>& operator<<(WideMessageBuffer& os, const V& val)
{
    return ((std::basic_ostream<wchar_t>&) os) << val;
}

class LOG4CXX_EXPORT MessageBuffer
{
    public:
        MessageBuffer();
        ~MessageBuffer();

        operator std::ostream& ();

        CharMessageBuffer& operator<<(const std::string& msg);
        CharMessageBuffer& operator<<(const char* msg);
        CharMessageBuffer& operator<<(char* msg);

        CharMessageBuffer& operator<<(const char msg);

        const std::string& str(CharMessageBuffer& buf);

        const std::string& str(std::ostream& os);

        WideMessageBuffer& operator<<(const std::wstring& msg);
        WideMessageBuffer& operator<<(const wchar_t* msg);
        WideMessageBuffer& operator<<(wchar_t* msg);
        WideMessageBuffer& operator<<(const wchar_t msg);

#if LOG4CXX_UNICHAR_API || LOG4CXX_CFSTRING_API

        UniCharMessageBuffer& operator<<(const std::basic_string<UniChar>& msg);
        UniCharMessageBuffer& operator<<(const UniChar* msg);
        UniCharMessageBuffer& operator<<(UniChar* msg);
        UniCharMessageBuffer& operator<<(const UniChar msg);
#endif

#if LOG4CXX_CFSTRING_API

        UniCharMessageBuffer& operator<<(const CFStringRef& msg);
#endif

        std::ostream& operator<<(ios_base_manip manip);

        std::ostream& operator<<(bool val);

        std::ostream& operator<<(short val);
        std::ostream& operator<<(int val);
        std::ostream& operator<<(unsigned int val);
        std::ostream& operator<<(long val);
        std::ostream& operator<<(unsigned long val);
        std::ostream& operator<<(float val);
        std::ostream& operator<<(double val);
        std::ostream& operator<<(long double val);
        std::ostream& operator<<(void* val);
        const std::wstring& str(WideMessageBuffer& buf);

        const std::wstring& str(std::basic_ostream<wchar_t>& os);

#if LOG4CXX_UNICHAR_API || LOG4CXX_CFSTRING_API

        const std::basic_string<UniChar>& str(UniCharMessageBuffer& buf);

        const std::basic_string<UniChar>& str(UniCharMessageBuffer::uostream& os);
#endif

        bool hasStream() const;

    private:
        MessageBuffer(const MessageBuffer&);
        MessageBuffer& operator=(const MessageBuffer&);

        CharMessageBuffer cbuf;

        WideMessageBuffer* wbuf;
#if LOG4CXX_UNICHAR_API || LOG4CXX_CFSTRING_API

        UniCharMessageBuffer* ubuf;
#endif
};

template<class V>
std::ostream& operator<<(MessageBuffer& os, const V& val)
{
    return ((std::ostream&) os) << val;
}

#if LOG4CXX_LOGCHAR_IS_UTF8
    typedef CharMessageBuffer LogCharMessageBuffer;
#endif

#if LOG4CXX_LOGCHAR_IS_WCHAR
    typedef WideMessageBuffer LogCharMessageBuffer;
#endif

#if LOG4CXX_LOGCHAR_IS_UNICHAR
    typedef UniCharMessageBuffer LogCharMessageBuffer;
#endif

#else
typedef CharMessageBuffer MessageBuffer;
typedef CharMessageBuffer LogCharMessageBuffer;
#endif

}
}

#if defined(_MSC_VER)
    #pragma warning (pop)
#endif

#endif