1 /*

     2 * Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of the License "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: 

    15 *

    16 */

    17 

    18 

    19 #ifndef	DESERIALISER_H

    20 #define	DESERIALISER_H

    21 

    22 #include <iostream>

    23 #include <stdexcept>

    24 #include <istream>

    25 #include <vector>

    26 #include "serialisable.h"

    27 #include "cardinality.h"

    28 #include "ucmp.h"

    29 

    30 #pragma warning (disable: 4800)

    31 

    32 

    33 /**

    34 * @file DESERIALISER.H

    35 *

    36 * @internalComponent

    37 * @released

    38 */

    39 class Deserialiser

    40 	{

    41 public:

    42 	Deserialiser(std::istream& stream) : iStream(stream)

    43 	{}

    44 

    45 	Deserialiser& operator>>(Serialisable& val)

    46 	{

    47 	val.Internalize(*this);

    48 	return *this;

    49 	}

    50 

    51 	// integer types

    52 	Deserialiser& operator>>(TInt64& val)

    53 	{ iStream.read(reinterpret_cast<char*>(&val),8); return *this; }

    54 

    55 	Deserialiser& operator>>(TInt& val)

    56 	{ iStream.read((char*)&val,4); return *this; }

    57 

    58 	Deserialiser& operator>>(TInt16& val)

    59 	{ iStream.read((char*)&val,2); return *this; }

    60 

    61 	Deserialiser& operator>>(TInt8& val)

    62 	{ iStream.read((char*)&val,1) ; return *this; }

    63 

    64 	Deserialiser& operator>>(TUint64& val)

    65 	{ iStream.read(reinterpret_cast<char*>(&val),8);  return *this; }

    66 

    67 	Deserialiser& operator>>(TUint32& val)

    68 	{ iStream.read((char*)&val,4);  return *this; }

    69 

    70 	Deserialiser& operator>>(TUint16& val)

    71 	{ iStream.read((char*)&val,2); return *this; }

    72 

    73 	Deserialiser& operator>>(TUint8& val)

    74 	{iStream.read((char*)&val,1); return *this; }

    75 

    76 	Deserialiser& operator>>(bool& val)

    77 	{

    78 	TUint32 x = 0;

    79 	iStream.read((char*)&x,4);

    80 	val = (bool)x;

    81 	return *this;

    82 	}

    83 

    84 

    85 	template <class T>

    86 	Deserialiser& operator>>(std::vector<T>& val)

    87 	{

    88 	TUint32 size = 0;

    89 	*this >> size;

    90 	val.resize(size);

    91 	for (TUint32 i = 0; i < size ; ++i)

    92 		{

    93 		*this >> val[i];

    94 		}

    95 	return *this;

    96 	}

    97 

    98 #ifndef _MSC_VER

    99 

   100 	template <class T>

   101 	Deserialiser& operator>>(std::vector<T*>& val)

   102 	{

   103 	TUint32 size = 0;

   104 	*this >> size;

   105 	val.resize(size);

   106 	for (TUint32 i = 0; i < size ; ++i)

   107 		{

   108 		val[i] = new T;

   109 		*this >> *val[i];

   110 		}

   111 	return *this;

   112 	}

   113 

   114 #endif

   115 

   116 	Deserialiser& operator>>(std::string& val)

   117 	{

   118 

   119 	Cardinality card;

   120 	*this >> card;

   121 	TUint32 size = card;

   122 

   123 	char* buff = 0;

   124 	if (size & 0x01)

   125 		{

   126 		// 8-bit

   127 		size = size >> 1;

   128 		buff = new char[(int)size];

   129 		iStream.read(buff, size);

   130 		}

   131 	else

   132 		{

   133 		throw std::runtime_error("Decoding unicode into std::string");

   134 		}

   135 	val.assign(buff, size);

   136 	delete buff;

   137 	return *this;

   138 	}

   139 

   140 	Deserialiser& operator>>(std::wstring& val)

   141 	{

   142 

   143 	Cardinality card;

   144 	*this >> card;

   145 	TUint32 size = card;

   146 

   147 	wchar_t* buff = 0;

   148 	if (size & 0x01)

   149 		{

   150 		throw std::runtime_error("Decoding 8bit text into std::wstring");

   151 		}

   152 	else

   153 		{

   154 		size = size >> 1;

   155 		buff = new wchar_t[(int)size];

   156 		TUnicodeExpander exp;

   157 		TMemoryUnicodeSink sink((TUint16*)buff);

   158 		exp.ExpandL(sink, *this ,size);

   159 		}

   160 	val.assign(buff, size);

   161 	delete buff;

   162 	return *this;

   163 	}

   164 

   165 	void read(TUint8* aDst, TUint32 aCount)

   166 	{

   167 	iStream.read((char*)aDst, aCount);

   168 	}

   169 

   170 

   171 private:

   172 	std::istream& iStream;

   173 	};

   174 

   175 #endif	/* DESERIALISER_H */