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/*
* Copyright (C) 2005-2011 MaNGOS <http://getmangos.com/>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/

#ifndef _BYTEBUFFER_H
#define _BYTEBUFFER_H

#include "ByteConverter.h"
#include <vector>
#include <list>
#include <map>

namespace Divide {

namespace Networking{
    class vector3 {
    public:
        vector3(F32 x, F32 y, F32 z) : _x(x), _y(y), _z(z) {}
        F32 _x, _y, _z;
    };
};

class ByteBufferException
{
    public:
        ByteBufferException(bool _add, size_t _pos, size_t _esize, size_t _size)
            : add(_add), pos(_pos), esize(_esize), size(_size)
        {
            PrintPosError();
        }

        void PrintPosError() const
        {
        }
    private:
        bool add;
        size_t pos;
        size_t esize;
        size_t size;
};

template<typename T>
struct Unused
{
    Unused() {}
};

class ByteBuffer
{
    public:
        const static size_t DEFAULT_SIZE = 0x1000;

        // constructor
        ByteBuffer(): _rpos(0), _wpos(0)
        {
            _storage.reserve(DEFAULT_SIZE);
        }

        // constructor
        ByteBuffer(size_t res): _rpos(0), _wpos(0)
        {
            _storage.reserve(res);
        }

        // copy constructor
        ByteBuffer(const ByteBuffer &buf): _rpos(buf._rpos), _wpos(buf._wpos), _storage(buf._storage) { }

        void clear()
        {
            _storage.clear();
            _rpos = _wpos = 0;
        }

        template<typename T> 
        void put(size_t pos,T value)
        {
            EndianConvert(value);
            put(pos,(U8 *)&value,sizeof(value));
        }

        ByteBuffer &operator<<(U8 value)
        {
            append<U8>(value);
            return *this;
        }

        ByteBuffer &operator<<(U16 value)
        {
            append<U16>(value);
            return *this;
        }

        ByteBuffer &operator<<(U32 value)
        {
            append<U32>(value);
            return *this;
        }

        ByteBuffer &operator<<(U64 value)
        {
            append<U64>(value);
            return *this;
        }

        // signed as in 2e complement
        ByteBuffer &operator<<(I8 value)
        {
            append<I8>(value);
            return *this;
        }

        ByteBuffer &operator<<(I16 value)
        {
            append<I16>(value);
            return *this;
        }

        ByteBuffer &operator<<(I32 value)
        {
            append<I32>(value);
            return *this;
        }

        ByteBuffer &operator<<(I64 value)
        {
            append<I64>(value);
            return *this;
        }

        // floating points
        ByteBuffer &operator<<(F32 value)
        {
            append<F32>(value);
            return *this;
        }

        ByteBuffer &operator<<(D32 value)
        {
            append<D32>(value);
            return *this;
        }

        ByteBuffer &operator<<(const std::string &value)
        {
            append((U8 const *)value.c_str(), value.length());
            append((U8)0);
            return *this;
        }

#if defined(STRING_IMP) && STRING_IMP != 1
        ByteBuffer &operator<<(const stringImpl &value)
        {
            append((U8 const *)value.c_str(), value.length());
            append((U8)0);
            return *this;
        }
#endif

        ByteBuffer &operator<<(const char *str)
        {
            append((U8 const *)str, str ? strlen(str) : 0);
            append((U8)0);
            return *this;
        }

        ByteBuffer &operator>>(bool &value)
        {
            value = read<char>() > 0 ? true : false;
            return *this;
        }

        ByteBuffer &operator>>(U8 &value)
        {
            value = read<U8>();
            return *this;
        }

        ByteBuffer &operator>>(U16 &value)
        {
            value = read<U16>();
            return *this;
        }

        ByteBuffer &operator>>(U32 &value)
        {
            value = read<U32>();
            return *this;
        }

        ByteBuffer &operator>>(U64 &value)
        {
            value = read<U64>();
            return *this;
        }

        //signed as in 2e complement
        ByteBuffer &operator>>(I8 &value)
        {
            value = read<I8>();
            return *this;
        }

        ByteBuffer &operator>>(I16 &value)
        {
            value = read<I16>();
            return *this;
        }

        ByteBuffer &operator>>(I32 &value)
        {
            value = read<I32>();
            return *this;
        }

        ByteBuffer &operator>>(I64 &value)
        {
            value = read<I64>();
            return *this;
        }

        ByteBuffer &operator>>(F32 &value)
        {
            value = read<F32>();
            return *this;
        }

        ByteBuffer &operator>>(D32 &value)
        {
            value = read<D32>();
            return *this;
        }

        ByteBuffer &operator>>(std::string& value)
        {
            value.clear();
            while (rpos() < size()) // prevent crash at wrong string format in packet
            {
                char c = read<char>();
                if (c == 0)
                    break;
                value += c;
            }
            return *this;
        }

#if defined(STRING_IMP) && STRING_IMP != 1
        ByteBuffer &operator>>(stringImpl& value)
        {
            value.clear();
            while (rpos() < size()) // prevent crash at wrong string format in packet
            {
                char c = read<char>();
                if (c == 0)
                    break;
                value += c;
            }
            return *this;
        }
#endif
        template<typename T>
        ByteBuffer &operator>>(Unused<T> const&)
        {
            read_skip<T>();
            return *this;
        }

        U8 operator[](size_t pos) const
        {
            return read<U8>(pos);
        }

        size_t rpos() const { return _rpos; }

        size_t rpos(size_t rpos_)
        {
            _rpos = rpos_;
            return _rpos;
        }

        size_t wpos() const { return _wpos; }

        size_t wpos(size_t wpos_)
        {
            _wpos = wpos_;
            return _wpos;
        }

        template<typename T>
        void read_skip() { read_skip(sizeof(T)); }

        void read_skip(size_t skip)
        {
            if(_rpos + skip > size())
                throw ByteBufferException(false, _rpos, skip, size());
            _rpos += skip;
        }

        template<typename T> 
        T read()
        {
            T r = read<T>(_rpos);
            _rpos += sizeof(T);
            return r;
        }

        template<typename T> 
        T read(size_t pos) const
        {
            if(pos + sizeof(T) > size())
                throw ByteBufferException(false, pos, sizeof(T), size());
            T val = *((T const*)&_storage[pos]);
            EndianConvert(val);
            return val;
        }

        void read(U8 *dest, size_t len)
        {
            if(_rpos + len > size())
                throw ByteBufferException(false, _rpos, len, size());
            memcpy(dest, &_storage[_rpos], len);
            _rpos += len;
        }

        U64 readPackGUID()
        {
            U64 guid = 0;
            U8 guidmark = 0;
            (*this) >> guidmark;

            for(I32 i = 0; i < 8; ++i)
            {
                if(guidmark & (((U8)1) << i))
                {
                    U8 bit;
                    (*this) >> bit;
                    guid |= (U64)(bit << (i * 8));
                }
            }

            return guid;
        }

        const U8 *contents() const { return &_storage[0]; }

        size_t size() const { return _storage.size(); }
        bool empty() const { return _storage.empty(); }

        void resize(size_t newsize)
        {
            _storage.resize(newsize);
            _rpos = 0;
            _wpos = size();
        }

        void reserve(size_t ressize)
        {
            if (ressize > size())
                _storage.reserve(ressize);
        }

        void append(const std::string& str)
        {
            append((U8 const*)str.c_str(), str.size() + 1);
        }

        void append(const char *src, size_t cnt)
        {
            return append((const U8 *)src, cnt);
        }

        template<typename T> void append(const T *src, size_t cnt)
        {
            return append((const U8 *)src, cnt * sizeof(T));
        }

        void append(const U8 *src, size_t cnt);

        void append(const ByteBuffer& buffer)
        {
            if(buffer.wpos())   append(buffer.contents(), buffer.wpos());
        }

        // can be used in SMSG_MONSTER_MOVE opcode
        void appendPackXYZ(F32 x, F32 y, F32 z)
        {
            U32 packed = 0;
            packed |= ((I32)(x / 0.25f) & 0x7FF);
            packed |= ((I32)(y / 0.25f) & 0x7FF) << 11;
            packed |= ((I32)(z / 0.25f) & 0x3FF) << 22;
            *this << packed;
        }

        void appendPackGUID(U64 guid)
        {
            U8 packGUID[8+1];
            packGUID[0] = 0;
            size_t size = 1;
            for (U8 i = 0; guid != 0; ++i)
            {
                if (guid & 0xFF)
                {
                    packGUID[0] |= (U8)(1 << i);
                    packGUID[size] = (U8)(guid & 0xFF);
                    ++size;
                }

                guid >>= 8;
            }

            append(packGUID, size);
        }

        void put(size_t pos, const U8 *src, size_t cnt)
        {
            if(pos + cnt > size())
                throw ByteBufferException(true, pos, cnt, size());
            memcpy(&_storage[pos], src, cnt);
        }

        void print_storage() const
        {
        }

        void textlike() const
        {
        }

        void hexlike() const
        {
        }
    private:
        /// limited for internal use because can "append" any unexpected type (like pointer and etc) with hard detection problem
        template<typename T> 
        void append(T value)
        {
            EndianConvert(value);
            append((U8 *)&value, sizeof(value));
        }

    protected:
        size_t _rpos, _wpos;
        std::vector<U8> _storage;
};

template<typename T>
inline ByteBuffer &operator<<(ByteBuffer &b, Networking::vector3 const& v)
{
   b << v.x;
   b << v.y;
   b << v.z;
   return b;
}

template<typename T>
inline ByteBuffer &operator>>(ByteBuffer &b,Networking::vector3 &v)
{
    b >> v.x;
    b >> v.y;
    b >> v.z;
    return b;
}

template<typename T>
inline ByteBuffer &operator<<(ByteBuffer &b, std::vector<T> const& v)
{
    b << (U32)v.size();
    for (typename std::vector<T>::iterator i = v.begin(); i != v.end(); ++i)
    {
        b << *i;
    }
    return b;
}

template<typename T>
inline ByteBuffer &operator>>(ByteBuffer &b, std::vector<T> &v)
{
    U32 vsize;
    b >> vsize;
    v.clear();
    while(vsize--)
    {
        T t;
        b >> t;
        v.push_back(t);
    }
    return b;
}

template<typename T>
inline ByteBuffer &operator<<(ByteBuffer &b, std::list<T> const& v)
{
    b << (U32)v.size();
    for (typename std::list<T>::iterator i = v.begin(); i != v.end(); ++i)
    {
        b << *i;
    }
    return b;
}

template<typename T>
inline ByteBuffer &operator>>(ByteBuffer &b, std::list<T> &v)
{
    U32 vsize;
    b >> vsize;
    v.clear();
    while(vsize--)
    {
        T t;
        b >> t;
        v.push_back(t);
    }
    return b;
}

template<typename K, typename V>
inline ByteBuffer &operator<<(ByteBuffer &b, std::map<K, V> &m)
{
    b << (U32)m.size();
    for (typename std::map<K, V>::iterator i = m.begin(); i != m.end(); ++i)
    {
        b << i->first << i->second;
    }
    return b;
}

template<typename K, typename V>
inline ByteBuffer &operator>>(ByteBuffer &b, std::map<K, V> &m)
{
    U32 msize;
    b >> msize;
    m.clear();
    while(msize--)
    {
        K k;
        V v;
        b >> k >> v;
        m.insert(std::make_pair(k, v));
    }
    return b;
}

template<>
inline void ByteBuffer::read_skip<char*>()
{
    std::string temp;
    *this >> temp;
}

template<>
inline void ByteBuffer::read_skip<char const*>()
{
    read_skip<char*>();
}

template<>
inline void ByteBuffer::read_skip<std::string>()
{
    read_skip<char*>();
}

}; //namespace Divide
#endif

Commits for Divide-Framework/trunk/Source Code/Libs/includes/DivideNetworking/ByteBuffer.h

Diff revisions: vs.
Revision Author Commited Message
331 Diff Diff IonutCava picture IonutCava Sat 06 Dec, 2014 20:53:45 +0000

[Ionut]
- Limited line length to 132 characters to improve readability and diff-comparisons
- Refactored memory allocation/deallocation functions
- Fixed a few compatibility issues with HashMap.h
- Fixed a bug in GPU Skinning shaders (cast a float to int)

321 Diff Diff IonutCava picture IonutCava Wed 03 Sep, 2014 22:05:15 +0000

[Ionut]
- Added support (and enabled by default) for the EASTL library (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2271.html / https://github.com/paulhodge/EASTL)
— Strings, vectors and hash_maps can be combined from EASTL, STL and Boost (not all combinations work. e.g. EASTL strings with STL/Boost containers due to the lack of a proper hash function)

318 Diff Diff IonutCava picture IonutCava Sat 30 Aug, 2014 17:35:53 +0000

[Ionut]
- Wrapped the entire code in a “Divide” namespace
- VertexBuffers now call “shrink_to_fit” on all internal data storage
- Improved some vector performance by preferring “emplace_back” instead of “push_back” + proepr usage of reserve / resize
- Wrapped OIS specific types and classes in Divide::Input namespace
- Added the messageBox.layout file (forgot it in the previous few commits)

302 Diff Diff IonutCava picture IonutCava Wed 06 Aug, 2014 22:09:55 +0000

[Ionut]
- GenericVertexData buffer size (for read/write buffering) is now configurable instead of a fixed 3x and also applies to non-persistently mapped buffers
- Moved OpenGL enum tables to Divide::GLUtil::GL_ENUM_TABLE
- More code cleanups (glResources, glError, glVertexArray, glGenericVertexData, glIMPrimitive)

171 Diff Diff k1ngp1n picture k1ngp1n Sun 03 Nov, 2013 18:15:06 +0000

-Replaced all tabs with spaces [[BR]]

152 k1ngp1n picture k1ngp1n Thu 20 Jun, 2013 14:23:31 +0000

[Ionut] [[BR]]
- New rendering pipeline (experimental and unstable): [[BR]]
— OpenGL 3.x clean context (glLight commands are still used for now, but UBO support is there, but not used yet) [[BR]]
— Custom matrix stacks and UBO based shader data (UBOs cause some link errors on some nVidia cards)[[BR]]
— Multi-threaded texture loading and shader compilation (mt shader compilation disabled for now. needs more tests) [[BR]]
— VAO rendering is self contained (no more enable/disable calls before a draw request) [[BR]]
— Render instance class used for rendering information [[BR]]
[[BR]]
- New unique ID generation base class: GUIDWrapper. Each class that derives from this, gets an application wide unique id on construction [[BR]]
- Added base code for an in-game editor using CEGUI [[BR]]
- Replaced some mutex locks with lockless data structures or atomic data [[BR]]
- CEGUI 0.8.2, FTGL-GL3 and GLIM 0.4 modified to support GLEW_MX if defined [[BR]]
- Dropped VS2008 support [[BR]]
- Networking library, server framework and ReCast files are now projects inside the Divide Framework solution [[BR]]
- New console command “setFov” that modifies the horizontal FoV value in realtime [[BR]]
- New console command “recompileShader” that reparses shader files, recompiles shaders and relinks shader programs who’s names match or contain the argument string [[BR]]
- New debug utility: axis angle drawn in corner of the screen if needed [[BR]]
- More ‘const’-s pasted around the code, more loop performance tweaks (allocations before a loop, tighter loops, etc), more utility member functions added to various classes [[BR]]