1 // Copyright (c) 2009-2010 Satoshi Nakamoto
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2 // Distributed under the MIT/X11 software license, see the accompanying
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3 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
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7 #include <boost/type_traits/is_fundamental.hpp>
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8 #if defined(_MSC_VER) || defined(__BORLANDC__)
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9 typedef __int64 int64;
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10 typedef unsigned __int64 uint64;
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12 typedef long long int64;
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13 typedef unsigned long long uint64;
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15 #if defined(_MSC_VER) && _MSC_VER < 1300
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16 #define for if (false) ; else for
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22 static const int VERSION = 310;
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23 static const char* pszSubVer = ".4";
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29 /////////////////////////////////////////////////////////////////
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31 // Templates for serializing to anything that looks like a stream,
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32 // i.e. anything that supports .read(char*, int) and .write(char*, int)
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38 SER_NETWORK = (1 << 0),
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39 SER_DISK = (1 << 1),
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40 SER_GETHASH = (1 << 2),
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43 SER_SKIPSIG = (1 << 16),
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44 SER_BLOCKHEADERONLY = (1 << 17),
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47 #define IMPLEMENT_SERIALIZE(statements) \
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48 unsigned int GetSerializeSize(int nType=0, int nVersion=VERSION) const \
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50 CSerActionGetSerializeSize ser_action; \
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51 const bool fGetSize = true; \
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52 const bool fWrite = false; \
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53 const bool fRead = false; \
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54 unsigned int nSerSize = 0; \
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55 ser_streamplaceholder s; \
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57 s.nVersion = nVersion; \
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61 template<typename Stream> \
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62 void Serialize(Stream& s, int nType=0, int nVersion=VERSION) const \
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64 CSerActionSerialize ser_action; \
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65 const bool fGetSize = false; \
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66 const bool fWrite = true; \
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67 const bool fRead = false; \
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68 unsigned int nSerSize = 0; \
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71 template<typename Stream> \
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72 void Unserialize(Stream& s, int nType=0, int nVersion=VERSION) \
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74 CSerActionUnserialize ser_action; \
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75 const bool fGetSize = false; \
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76 const bool fWrite = false; \
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77 const bool fRead = true; \
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78 unsigned int nSerSize = 0; \
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82 #define READWRITE(obj) (nSerSize += ::SerReadWrite(s, (obj), nType, nVersion, ser_action))
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84 #define READWRITEVER(obj) \
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87 if ((obj) == 10300) \
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99 #define WRITEDATA(s, obj) s.write((char*)&(obj), sizeof(obj))
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100 #define READDATA(s, obj) s.read((char*)&(obj), sizeof(obj))
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102 inline unsigned int GetSerializeSize(char a, int, int=0) { return sizeof(a); }
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103 inline unsigned int GetSerializeSize(signed char a, int, int=0) { return sizeof(a); }
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104 inline unsigned int GetSerializeSize(unsigned char a, int, int=0) { return sizeof(a); }
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105 inline unsigned int GetSerializeSize(signed short a, int, int=0) { return sizeof(a); }
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106 inline unsigned int GetSerializeSize(unsigned short a, int, int=0) { return sizeof(a); }
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107 inline unsigned int GetSerializeSize(signed int a, int, int=0) { return sizeof(a); }
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108 inline unsigned int GetSerializeSize(unsigned int a, int, int=0) { return sizeof(a); }
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109 inline unsigned int GetSerializeSize(signed long a, int, int=0) { return sizeof(a); }
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110 inline unsigned int GetSerializeSize(unsigned long a, int, int=0) { return sizeof(a); }
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111 inline unsigned int GetSerializeSize(int64 a, int, int=0) { return sizeof(a); }
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112 inline unsigned int GetSerializeSize(uint64 a, int, int=0) { return sizeof(a); }
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113 inline unsigned int GetSerializeSize(float a, int, int=0) { return sizeof(a); }
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114 inline unsigned int GetSerializeSize(double a, int, int=0) { return sizeof(a); }
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116 template<typename Stream> inline void Serialize(Stream& s, char a, int, int=0) { WRITEDATA(s, a); }
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117 template<typename Stream> inline void Serialize(Stream& s, signed char a, int, int=0) { WRITEDATA(s, a); }
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118 template<typename Stream> inline void Serialize(Stream& s, unsigned char a, int, int=0) { WRITEDATA(s, a); }
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119 template<typename Stream> inline void Serialize(Stream& s, signed short a, int, int=0) { WRITEDATA(s, a); }
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120 template<typename Stream> inline void Serialize(Stream& s, unsigned short a, int, int=0) { WRITEDATA(s, a); }
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121 template<typename Stream> inline void Serialize(Stream& s, signed int a, int, int=0) { WRITEDATA(s, a); }
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122 template<typename Stream> inline void Serialize(Stream& s, unsigned int a, int, int=0) { WRITEDATA(s, a); }
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123 template<typename Stream> inline void Serialize(Stream& s, signed long a, int, int=0) { WRITEDATA(s, a); }
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124 template<typename Stream> inline void Serialize(Stream& s, unsigned long a, int, int=0) { WRITEDATA(s, a); }
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125 template<typename Stream> inline void Serialize(Stream& s, int64 a, int, int=0) { WRITEDATA(s, a); }
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126 template<typename Stream> inline void Serialize(Stream& s, uint64 a, int, int=0) { WRITEDATA(s, a); }
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127 template<typename Stream> inline void Serialize(Stream& s, float a, int, int=0) { WRITEDATA(s, a); }
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128 template<typename Stream> inline void Serialize(Stream& s, double a, int, int=0) { WRITEDATA(s, a); }
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130 template<typename Stream> inline void Unserialize(Stream& s, char& a, int, int=0) { READDATA(s, a); }
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131 template<typename Stream> inline void Unserialize(Stream& s, signed char& a, int, int=0) { READDATA(s, a); }
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132 template<typename Stream> inline void Unserialize(Stream& s, unsigned char& a, int, int=0) { READDATA(s, a); }
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133 template<typename Stream> inline void Unserialize(Stream& s, signed short& a, int, int=0) { READDATA(s, a); }
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134 template<typename Stream> inline void Unserialize(Stream& s, unsigned short& a, int, int=0) { READDATA(s, a); }
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135 template<typename Stream> inline void Unserialize(Stream& s, signed int& a, int, int=0) { READDATA(s, a); }
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136 template<typename Stream> inline void Unserialize(Stream& s, unsigned int& a, int, int=0) { READDATA(s, a); }
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137 template<typename Stream> inline void Unserialize(Stream& s, signed long& a, int, int=0) { READDATA(s, a); }
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138 template<typename Stream> inline void Unserialize(Stream& s, unsigned long& a, int, int=0) { READDATA(s, a); }
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139 template<typename Stream> inline void Unserialize(Stream& s, int64& a, int, int=0) { READDATA(s, a); }
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140 template<typename Stream> inline void Unserialize(Stream& s, uint64& a, int, int=0) { READDATA(s, a); }
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141 template<typename Stream> inline void Unserialize(Stream& s, float& a, int, int=0) { READDATA(s, a); }
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142 template<typename Stream> inline void Unserialize(Stream& s, double& a, int, int=0) { READDATA(s, a); }
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144 inline unsigned int GetSerializeSize(bool a, int, int=0) { return sizeof(char); }
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145 template<typename Stream> inline void Serialize(Stream& s, bool a, int, int=0) { char f=a; WRITEDATA(s, f); }
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146 template<typename Stream> inline void Unserialize(Stream& s, bool& a, int, int=0) { char f; READDATA(s, f); a=f; }
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155 // size < 253 -- 1 byte
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156 // size <= USHRT_MAX -- 3 bytes (253 + 2 bytes)
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157 // size <= UINT_MAX -- 5 bytes (254 + 4 bytes)
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158 // size > UINT_MAX -- 9 bytes (255 + 8 bytes)
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160 inline unsigned int GetSizeOfCompactSize(uint64 nSize)
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162 if (nSize < UCHAR_MAX-2) return sizeof(unsigned char);
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163 else if (nSize <= USHRT_MAX) return sizeof(unsigned char) + sizeof(unsigned short);
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164 else if (nSize <= UINT_MAX) return sizeof(unsigned char) + sizeof(unsigned int);
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165 else return sizeof(unsigned char) + sizeof(uint64);
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168 template<typename Stream>
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169 void WriteCompactSize(Stream& os, uint64 nSize)
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171 if (nSize < UCHAR_MAX-2)
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173 unsigned char chSize = nSize;
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174 WRITEDATA(os, chSize);
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176 else if (nSize <= USHRT_MAX)
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178 unsigned char chSize = UCHAR_MAX-2;
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179 unsigned short xSize = nSize;
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180 WRITEDATA(os, chSize);
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181 WRITEDATA(os, xSize);
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183 else if (nSize <= UINT_MAX)
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185 unsigned char chSize = UCHAR_MAX-1;
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186 unsigned int xSize = nSize;
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187 WRITEDATA(os, chSize);
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188 WRITEDATA(os, xSize);
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192 unsigned char chSize = UCHAR_MAX;
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193 WRITEDATA(os, chSize);
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194 WRITEDATA(os, nSize);
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199 template<typename Stream>
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200 uint64 ReadCompactSize(Stream& is)
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202 unsigned char chSize;
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203 READDATA(is, chSize);
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204 uint64 nSizeRet = 0;
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205 if (chSize < UCHAR_MAX-2)
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209 else if (chSize == UCHAR_MAX-2)
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211 unsigned short nSize;
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212 READDATA(is, nSize);
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215 else if (chSize == UCHAR_MAX-1)
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217 unsigned int nSize;
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218 READDATA(is, nSize);
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224 READDATA(is, nSize);
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227 if (nSizeRet > (uint64)INT_MAX)
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228 throw std::ios_base::failure("ReadCompactSize() : size too large");
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235 // Wrapper for serializing arrays and POD
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236 // There's a clever template way to make arrays serialize normally, but MSVC6 doesn't support it
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238 #define FLATDATA(obj) REF(CFlatData((char*)&(obj), (char*)&(obj) + sizeof(obj)))
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245 CFlatData(void* pbeginIn, void* pendIn) : pbegin((char*)pbeginIn), pend((char*)pendIn) { }
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246 char* begin() { return pbegin; }
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247 const char* begin() const { return pbegin; }
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248 char* end() { return pend; }
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249 const char* end() const { return pend; }
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251 unsigned int GetSerializeSize(int, int=0) const
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253 return pend - pbegin;
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256 template<typename Stream>
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257 void Serialize(Stream& s, int, int=0) const
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259 s.write(pbegin, pend - pbegin);
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262 template<typename Stream>
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263 void Unserialize(Stream& s, int, int=0)
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265 s.read(pbegin, pend - pbegin);
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272 // string stored as a fixed length field
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274 template<std::size_t LEN>
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275 class CFixedFieldString
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278 const string* pcstr;
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281 explicit CFixedFieldString(const string& str) : pcstr(&str), pstr(NULL) { }
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282 explicit CFixedFieldString(string& str) : pcstr(&str), pstr(&str) { }
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284 unsigned int GetSerializeSize(int, int=0) const
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289 template<typename Stream>
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290 void Serialize(Stream& s, int, int=0) const
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293 strncpy(pszBuf, pcstr->c_str(), LEN);
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294 s.write(pszBuf, LEN);
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297 template<typename Stream>
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298 void Unserialize(Stream& s, int, int=0)
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301 throw std::ios_base::failure("CFixedFieldString::Unserialize : trying to unserialize to const string");
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302 char pszBuf[LEN+1];
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303 s.read(pszBuf, LEN);
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304 pszBuf[LEN] = '\0';
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314 // Forward declarations
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318 template<typename C> unsigned int GetSerializeSize(const basic_string<C>& str, int, int=0);
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319 template<typename Stream, typename C> void Serialize(Stream& os, const basic_string<C>& str, int, int=0);
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320 template<typename Stream, typename C> void Unserialize(Stream& is, basic_string<C>& str, int, int=0);
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323 template<typename T, typename A> unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&);
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324 template<typename T, typename A> unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&);
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325 template<typename T, typename A> inline unsigned int GetSerializeSize(const std::vector<T, A>& v, int nType, int nVersion=VERSION);
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326 template<typename Stream, typename T, typename A> void Serialize_impl(Stream& os, const std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&);
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327 template<typename Stream, typename T, typename A> void Serialize_impl(Stream& os, const std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&);
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328 template<typename Stream, typename T, typename A> inline void Serialize(Stream& os, const std::vector<T, A>& v, int nType, int nVersion=VERSION);
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329 template<typename Stream, typename T, typename A> void Unserialize_impl(Stream& is, std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&);
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330 template<typename Stream, typename T, typename A> void Unserialize_impl(Stream& is, std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&);
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331 template<typename Stream, typename T, typename A> inline void Unserialize(Stream& is, std::vector<T, A>& v, int nType, int nVersion=VERSION);
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333 // others derived from vector
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334 extern inline unsigned int GetSerializeSize(const CScript& v, int nType, int nVersion=VERSION);
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335 template<typename Stream> void Serialize(Stream& os, const CScript& v, int nType, int nVersion=VERSION);
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336 template<typename Stream> void Unserialize(Stream& is, CScript& v, int nType, int nVersion=VERSION);
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339 template<typename K, typename T> unsigned int GetSerializeSize(const std::pair<K, T>& item, int nType, int nVersion=VERSION);
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340 template<typename Stream, typename K, typename T> void Serialize(Stream& os, const std::pair<K, T>& item, int nType, int nVersion=VERSION);
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341 template<typename Stream, typename K, typename T> void Unserialize(Stream& is, std::pair<K, T>& item, int nType, int nVersion=VERSION);
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344 template<typename K, typename T, typename Pred, typename A> unsigned int GetSerializeSize(const std::map<K, T, Pred, A>& m, int nType, int nVersion=VERSION);
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345 template<typename Stream, typename K, typename T, typename Pred, typename A> void Serialize(Stream& os, const std::map<K, T, Pred, A>& m, int nType, int nVersion=VERSION);
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346 template<typename Stream, typename K, typename T, typename Pred, typename A> void Unserialize(Stream& is, std::map<K, T, Pred, A>& m, int nType, int nVersion=VERSION);
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349 template<typename K, typename Pred, typename A> unsigned int GetSerializeSize(const std::set<K, Pred, A>& m, int nType, int nVersion=VERSION);
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350 template<typename Stream, typename K, typename Pred, typename A> void Serialize(Stream& os, const std::set<K, Pred, A>& m, int nType, int nVersion=VERSION);
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351 template<typename Stream, typename K, typename Pred, typename A> void Unserialize(Stream& is, std::set<K, Pred, A>& m, int nType, int nVersion=VERSION);
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358 // If none of the specialized versions above matched, default to calling member function.
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359 // "int nType" is changed to "long nType" to keep from getting an ambiguous overload error.
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360 // The compiler will only cast int to long if none of the other templates matched.
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361 // Thanks to Boost serialization for this idea.
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363 template<typename T>
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364 inline unsigned int GetSerializeSize(const T& a, long nType, int nVersion=VERSION)
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366 return a.GetSerializeSize((int)nType, nVersion);
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369 template<typename Stream, typename T>
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370 inline void Serialize(Stream& os, const T& a, long nType, int nVersion=VERSION)
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372 a.Serialize(os, (int)nType, nVersion);
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375 template<typename Stream, typename T>
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376 inline void Unserialize(Stream& is, T& a, long nType, int nVersion=VERSION)
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378 a.Unserialize(is, (int)nType, nVersion);
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388 template<typename C>
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389 unsigned int GetSerializeSize(const basic_string<C>& str, int, int)
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391 return GetSizeOfCompactSize(str.size()) + str.size() * sizeof(str[0]);
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394 template<typename Stream, typename C>
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395 void Serialize(Stream& os, const basic_string<C>& str, int, int)
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397 WriteCompactSize(os, str.size());
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399 os.write((char*)&str[0], str.size() * sizeof(str[0]));
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402 template<typename Stream, typename C>
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403 void Unserialize(Stream& is, basic_string<C>& str, int, int)
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405 unsigned int nSize = ReadCompactSize(is);
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408 is.read((char*)&str[0], nSize * sizeof(str[0]));
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416 template<typename T, typename A>
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417 unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&)
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419 return (GetSizeOfCompactSize(v.size()) + v.size() * sizeof(T));
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422 template<typename T, typename A>
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423 unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&)
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425 unsigned int nSize = GetSizeOfCompactSize(v.size());
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426 for (typename std::vector<T, A>::const_iterator vi = v.begin(); vi != v.end(); ++vi)
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427 nSize += GetSerializeSize((*vi), nType, nVersion);
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431 template<typename T, typename A>
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432 inline unsigned int GetSerializeSize(const std::vector<T, A>& v, int nType, int nVersion)
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434 return GetSerializeSize_impl(v, nType, nVersion, boost::is_fundamental<T>());
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438 template<typename Stream, typename T, typename A>
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439 void Serialize_impl(Stream& os, const std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&)
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441 WriteCompactSize(os, v.size());
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443 os.write((char*)&v[0], v.size() * sizeof(T));
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446 template<typename Stream, typename T, typename A>
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447 void Serialize_impl(Stream& os, const std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&)
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449 WriteCompactSize(os, v.size());
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450 for (typename std::vector<T, A>::const_iterator vi = v.begin(); vi != v.end(); ++vi)
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451 ::Serialize(os, (*vi), nType, nVersion);
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454 template<typename Stream, typename T, typename A>
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455 inline void Serialize(Stream& os, const std::vector<T, A>& v, int nType, int nVersion)
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457 Serialize_impl(os, v, nType, nVersion, boost::is_fundamental<T>());
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461 template<typename Stream, typename T, typename A>
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462 void Unserialize_impl(Stream& is, std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&)
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464 //unsigned int nSize = ReadCompactSize(is);
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466 //is.read((char*)&v[0], nSize * sizeof(T));
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468 // Limit size per read so bogus size value won't cause out of memory
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470 unsigned int nSize = ReadCompactSize(is);
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471 unsigned int i = 0;
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474 unsigned int blk = min(nSize - i, (unsigned int)(1 + 4999999 / sizeof(T)));
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476 is.read((char*)&v[i], blk * sizeof(T));
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481 template<typename Stream, typename T, typename A>
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482 void Unserialize_impl(Stream& is, std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&)
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484 //unsigned int nSize = ReadCompactSize(is);
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486 //for (std::vector<T, A>::iterator vi = v.begin(); vi != v.end(); ++vi)
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487 // Unserialize(is, (*vi), nType, nVersion);
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490 unsigned int nSize = ReadCompactSize(is);
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491 unsigned int i = 0;
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492 unsigned int nMid = 0;
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493 while (nMid < nSize)
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495 nMid += 5000000 / sizeof(T);
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499 for (; i < nMid; i++)
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500 Unserialize(is, v[i], nType, nVersion);
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504 template<typename Stream, typename T, typename A>
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505 inline void Unserialize(Stream& is, std::vector<T, A>& v, int nType, int nVersion)
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507 Unserialize_impl(is, v, nType, nVersion, boost::is_fundamental<T>());
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513 // others derived from vector
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515 inline unsigned int GetSerializeSize(const CScript& v, int nType, int nVersion)
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517 return GetSerializeSize((const vector<unsigned char>&)v, nType, nVersion);
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520 template<typename Stream>
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521 void Serialize(Stream& os, const CScript& v, int nType, int nVersion)
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523 Serialize(os, (const vector<unsigned char>&)v, nType, nVersion);
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526 template<typename Stream>
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527 void Unserialize(Stream& is, CScript& v, int nType, int nVersion)
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529 Unserialize(is, (vector<unsigned char>&)v, nType, nVersion);
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537 template<typename K, typename T>
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538 unsigned int GetSerializeSize(const std::pair<K, T>& item, int nType, int nVersion)
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540 return GetSerializeSize(item.first, nType, nVersion) + GetSerializeSize(item.second, nType, nVersion);
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543 template<typename Stream, typename K, typename T>
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544 void Serialize(Stream& os, const std::pair<K, T>& item, int nType, int nVersion)
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546 Serialize(os, item.first, nType, nVersion);
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547 Serialize(os, item.second, nType, nVersion);
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550 template<typename Stream, typename K, typename T>
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551 void Unserialize(Stream& is, std::pair<K, T>& item, int nType, int nVersion)
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553 Unserialize(is, item.first, nType, nVersion);
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554 Unserialize(is, item.second, nType, nVersion);
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562 template<typename K, typename T, typename Pred, typename A>
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563 unsigned int GetSerializeSize(const std::map<K, T, Pred, A>& m, int nType, int nVersion)
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565 unsigned int nSize = GetSizeOfCompactSize(m.size());
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566 for (typename std::map<K, T, Pred, A>::const_iterator mi = m.begin(); mi != m.end(); ++mi)
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567 nSize += GetSerializeSize((*mi), nType, nVersion);
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571 template<typename Stream, typename K, typename T, typename Pred, typename A>
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572 void Serialize(Stream& os, const std::map<K, T, Pred, A>& m, int nType, int nVersion)
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574 WriteCompactSize(os, m.size());
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575 for (typename std::map<K, T, Pred, A>::const_iterator mi = m.begin(); mi != m.end(); ++mi)
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576 Serialize(os, (*mi), nType, nVersion);
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579 template<typename Stream, typename K, typename T, typename Pred, typename A>
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580 void Unserialize(Stream& is, std::map<K, T, Pred, A>& m, int nType, int nVersion)
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583 unsigned int nSize = ReadCompactSize(is);
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584 typename std::map<K, T, Pred, A>::iterator mi = m.begin();
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585 for (unsigned int i = 0; i < nSize; i++)
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588 Unserialize(is, item, nType, nVersion);
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589 mi = m.insert(mi, item);
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598 template<typename K, typename Pred, typename A>
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599 unsigned int GetSerializeSize(const std::set<K, Pred, A>& m, int nType, int nVersion)
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601 unsigned int nSize = GetSizeOfCompactSize(m.size());
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602 for (typename std::set<K, Pred, A>::const_iterator it = m.begin(); it != m.end(); ++it)
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603 nSize += GetSerializeSize((*it), nType, nVersion);
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607 template<typename Stream, typename K, typename Pred, typename A>
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608 void Serialize(Stream& os, const std::set<K, Pred, A>& m, int nType, int nVersion)
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610 WriteCompactSize(os, m.size());
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611 for (typename std::set<K, Pred, A>::const_iterator it = m.begin(); it != m.end(); ++it)
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612 Serialize(os, (*it), nType, nVersion);
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615 template<typename Stream, typename K, typename Pred, typename A>
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616 void Unserialize(Stream& is, std::set<K, Pred, A>& m, int nType, int nVersion)
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619 unsigned int nSize = ReadCompactSize(is);
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620 typename std::set<K, Pred, A>::iterator it = m.begin();
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621 for (unsigned int i = 0; i < nSize; i++)
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624 Unserialize(is, key, nType, nVersion);
\r
625 it = m.insert(it, key);
\r
632 // Support for IMPLEMENT_SERIALIZE and READWRITE macro
\r
634 class CSerActionGetSerializeSize { };
\r
635 class CSerActionSerialize { };
\r
636 class CSerActionUnserialize { };
\r
638 template<typename Stream, typename T>
\r
639 inline unsigned int SerReadWrite(Stream& s, const T& obj, int nType, int nVersion, CSerActionGetSerializeSize ser_action)
\r
641 return ::GetSerializeSize(obj, nType, nVersion);
\r
644 template<typename Stream, typename T>
\r
645 inline unsigned int SerReadWrite(Stream& s, const T& obj, int nType, int nVersion, CSerActionSerialize ser_action)
\r
647 ::Serialize(s, obj, nType, nVersion);
\r
651 template<typename Stream, typename T>
\r
652 inline unsigned int SerReadWrite(Stream& s, T& obj, int nType, int nVersion, CSerActionUnserialize ser_action)
\r
654 ::Unserialize(s, obj, nType, nVersion);
\r
658 struct ser_streamplaceholder
\r
673 // Allocator that clears its contents before deletion
\r
675 template<typename T>
\r
676 struct secure_allocator : public std::allocator<T>
\r
678 // MSVC8 default copy constructor is broken
\r
679 typedef std::allocator<T> base;
\r
680 typedef typename base::size_type size_type;
\r
681 typedef typename base::difference_type difference_type;
\r
682 typedef typename base::pointer pointer;
\r
683 typedef typename base::const_pointer const_pointer;
\r
684 typedef typename base::reference reference;
\r
685 typedef typename base::const_reference const_reference;
\r
686 typedef typename base::value_type value_type;
\r
687 secure_allocator() throw() {}
\r
688 secure_allocator(const secure_allocator& a) throw() : base(a) {}
\r
689 ~secure_allocator() throw() {}
\r
690 template<typename _Other> struct rebind
\r
691 { typedef secure_allocator<_Other> other; };
\r
693 void deallocate(T* p, std::size_t n)
\r
696 memset(p, 0, sizeof(T) * n);
\r
697 allocator<T>::deallocate(p, n);
\r
704 // Double ended buffer combining vector and stream-like interfaces.
\r
705 // >> and << read and write unformatted data using the above serialization templates.
\r
706 // Fills with data in linear time; some stringstream implementations take N^2 time.
\r
711 typedef vector<char, secure_allocator<char> > vector_type;
\r
713 unsigned int nReadPos;
\r
720 typedef vector_type::allocator_type allocator_type;
\r
721 typedef vector_type::size_type size_type;
\r
722 typedef vector_type::difference_type difference_type;
\r
723 typedef vector_type::reference reference;
\r
724 typedef vector_type::const_reference const_reference;
\r
725 typedef vector_type::value_type value_type;
\r
726 typedef vector_type::iterator iterator;
\r
727 typedef vector_type::const_iterator const_iterator;
\r
728 typedef vector_type::reverse_iterator reverse_iterator;
\r
730 explicit CDataStream(int nTypeIn=0, int nVersionIn=VERSION)
\r
732 Init(nTypeIn, nVersionIn);
\r
735 CDataStream(const_iterator pbegin, const_iterator pend, int nTypeIn=0, int nVersionIn=VERSION) : vch(pbegin, pend)
\r
737 Init(nTypeIn, nVersionIn);
\r
740 #if !defined(_MSC_VER) || _MSC_VER >= 1300
\r
741 CDataStream(const char* pbegin, const char* pend, int nTypeIn=0, int nVersionIn=VERSION) : vch(pbegin, pend)
\r
743 Init(nTypeIn, nVersionIn);
\r
747 CDataStream(const vector_type& vchIn, int nTypeIn=0, int nVersionIn=VERSION) : vch(vchIn.begin(), vchIn.end())
\r
749 Init(nTypeIn, nVersionIn);
\r
752 CDataStream(const vector<char>& vchIn, int nTypeIn=0, int nVersionIn=VERSION) : vch(vchIn.begin(), vchIn.end())
\r
754 Init(nTypeIn, nVersionIn);
\r
757 CDataStream(const vector<unsigned char>& vchIn, int nTypeIn=0, int nVersionIn=VERSION) : vch((char*)&vchIn.begin()[0], (char*)&vchIn.end()[0])
\r
759 Init(nTypeIn, nVersionIn);
\r
762 void Init(int nTypeIn=0, int nVersionIn=VERSION)
\r
766 nVersion = nVersionIn;
\r
768 exceptmask = ios::badbit | ios::failbit;
\r
771 CDataStream& operator+=(const CDataStream& b)
\r
773 vch.insert(vch.end(), b.begin(), b.end());
\r
777 friend CDataStream operator+(const CDataStream& a, const CDataStream& b)
\r
779 CDataStream ret = a;
\r
786 return (string(begin(), end()));
\r
793 const_iterator begin() const { return vch.begin() + nReadPos; }
\r
794 iterator begin() { return vch.begin() + nReadPos; }
\r
795 const_iterator end() const { return vch.end(); }
\r
796 iterator end() { return vch.end(); }
\r
797 size_type size() const { return vch.size() - nReadPos; }
\r
798 bool empty() const { return vch.size() == nReadPos; }
\r
799 void resize(size_type n, value_type c=0) { vch.resize(n + nReadPos, c); }
\r
800 void reserve(size_type n) { vch.reserve(n + nReadPos); }
\r
801 const_reference operator[](size_type pos) const { return vch[pos + nReadPos]; }
\r
802 reference operator[](size_type pos) { return vch[pos + nReadPos]; }
\r
803 void clear() { vch.clear(); nReadPos = 0; }
\r
804 iterator insert(iterator it, const char& x=char()) { return vch.insert(it, x); }
\r
805 void insert(iterator it, size_type n, const char& x) { vch.insert(it, n, x); }
\r
807 void insert(iterator it, const_iterator first, const_iterator last)
\r
809 if (it == vch.begin() + nReadPos && last - first <= nReadPos)
\r
811 // special case for inserting at the front when there's room
\r
812 nReadPos -= (last - first);
\r
813 memcpy(&vch[nReadPos], &first[0], last - first);
\r
816 vch.insert(it, first, last);
\r
819 void insert(iterator it, vector<char>::const_iterator first, vector<char>::const_iterator last)
\r
821 if (it == vch.begin() + nReadPos && last - first <= nReadPos)
\r
823 // special case for inserting at the front when there's room
\r
824 nReadPos -= (last - first);
\r
825 memcpy(&vch[nReadPos], &first[0], last - first);
\r
828 vch.insert(it, first, last);
\r
831 #if !defined(_MSC_VER) || _MSC_VER >= 1300
\r
832 void insert(iterator it, const char* first, const char* last)
\r
834 if (it == vch.begin() + nReadPos && last - first <= nReadPos)
\r
836 // special case for inserting at the front when there's room
\r
837 nReadPos -= (last - first);
\r
838 memcpy(&vch[nReadPos], &first[0], last - first);
\r
841 vch.insert(it, first, last);
\r
845 iterator erase(iterator it)
\r
847 if (it == vch.begin() + nReadPos)
\r
849 // special case for erasing from the front
\r
850 if (++nReadPos >= vch.size())
\r
852 // whenever we reach the end, we take the opportunity to clear the buffer
\r
854 return vch.erase(vch.begin(), vch.end());
\r
856 return vch.begin() + nReadPos;
\r
859 return vch.erase(it);
\r
862 iterator erase(iterator first, iterator last)
\r
864 if (first == vch.begin() + nReadPos)
\r
866 // special case for erasing from the front
\r
867 if (last == vch.end())
\r
870 return vch.erase(vch.begin(), vch.end());
\r
874 nReadPos = (last - vch.begin());
\r
879 return vch.erase(first, last);
\r
882 inline void Compact()
\r
884 vch.erase(vch.begin(), vch.begin() + nReadPos);
\r
888 bool Rewind(size_type n)
\r
890 // Rewind by n characters if the buffer hasn't been compacted yet
\r
901 void setstate(short bits, const char* psz)
\r
904 if (state & exceptmask)
\r
905 throw std::ios_base::failure(psz);
\r
908 bool eof() const { return size() == 0; }
\r
909 bool fail() const { return state & (ios::badbit | ios::failbit); }
\r
910 bool good() const { return !eof() && (state == 0); }
\r
911 void clear(short n) { state = n; } // name conflict with vector clear()
\r
912 short exceptions() { return exceptmask; }
\r
913 short exceptions(short mask) { short prev = exceptmask; exceptmask = mask; setstate(0, "CDataStream"); return prev; }
\r
914 CDataStream* rdbuf() { return this; }
\r
915 int in_avail() { return size(); }
\r
917 void SetType(int n) { nType = n; }
\r
918 int GetType() { return nType; }
\r
919 void SetVersion(int n) { nVersion = n; }
\r
920 int GetVersion() { return nVersion; }
\r
921 void ReadVersion() { *this >> nVersion; }
\r
922 void WriteVersion() { *this << nVersion; }
\r
924 CDataStream& read(char* pch, int nSize)
\r
926 // Read from the beginning of the buffer
\r
927 assert(nSize >= 0);
\r
928 unsigned int nReadPosNext = nReadPos + nSize;
\r
929 if (nReadPosNext >= vch.size())
\r
931 if (nReadPosNext > vch.size())
\r
933 setstate(ios::failbit, "CDataStream::read() : end of data");
\r
934 memset(pch, 0, nSize);
\r
935 nSize = vch.size() - nReadPos;
\r
937 memcpy(pch, &vch[nReadPos], nSize);
\r
942 memcpy(pch, &vch[nReadPos], nSize);
\r
943 nReadPos = nReadPosNext;
\r
947 CDataStream& ignore(int nSize)
\r
949 // Ignore from the beginning of the buffer
\r
950 assert(nSize >= 0);
\r
951 unsigned int nReadPosNext = nReadPos + nSize;
\r
952 if (nReadPosNext >= vch.size())
\r
954 if (nReadPosNext > vch.size())
\r
956 setstate(ios::failbit, "CDataStream::ignore() : end of data");
\r
957 nSize = vch.size() - nReadPos;
\r
963 nReadPos = nReadPosNext;
\r
967 CDataStream& write(const char* pch, int nSize)
\r
969 // Write to the end of the buffer
\r
970 assert(nSize >= 0);
\r
971 vch.insert(vch.end(), pch, pch + nSize);
\r
975 template<typename Stream>
\r
976 void Serialize(Stream& s, int nType=0, int nVersion=VERSION) const
\r
978 // Special case: stream << stream concatenates like stream += stream
\r
980 s.write((char*)&vch[0], vch.size() * sizeof(vch[0]));
\r
983 template<typename T>
\r
984 unsigned int GetSerializeSize(const T& obj)
\r
986 // Tells the size of the object if serialized to this stream
\r
987 return ::GetSerializeSize(obj, nType, nVersion);
\r
990 template<typename T>
\r
991 CDataStream& operator<<(const T& obj)
\r
993 // Serialize to this stream
\r
994 ::Serialize(*this, obj, nType, nVersion);
\r
998 template<typename T>
\r
999 CDataStream& operator>>(T& obj)
\r
1001 // Unserialize from this stream
\r
1002 ::Unserialize(*this, obj, nType, nVersion);
\r
1007 #ifdef TESTCDATASTREAM
\r
1010 // n=1000 0 seconds
\r
1011 // n=2000 0 seconds
\r
1012 // n=4000 0 seconds
\r
1013 // n=8000 0 seconds
\r
1014 // n=16000 0 seconds
\r
1015 // n=32000 0 seconds
\r
1016 // n=64000 1 seconds
\r
1017 // n=128000 1 seconds
\r
1018 // n=256000 2 seconds
\r
1019 // n=512000 4 seconds
\r
1020 // n=1024000 8 seconds
\r
1021 // n=2048000 16 seconds
\r
1022 // n=4096000 32 seconds
\r
1024 // n=1000 1 seconds
\r
1025 // n=2000 1 seconds
\r
1026 // n=4000 13 seconds
\r
1027 // n=8000 87 seconds
\r
1028 // n=16000 400 seconds
\r
1029 // n=32000 1660 seconds
\r
1030 // n=64000 6749 seconds
\r
1031 // n=128000 27241 seconds
\r
1032 // n=256000 109804 seconds
\r
1033 #include <iostream>
\r
1034 int main(int argc, char *argv[])
\r
1036 vector<unsigned char> vch(0xcc, 250);
\r
1037 printf("CDataStream:\n");
\r
1038 for (int n = 1000; n <= 4500000; n *= 2)
\r
1041 time_t nStart = time(NULL);
\r
1042 for (int i = 0; i < n; i++)
\r
1043 ss.write((char*)&vch[0], vch.size());
\r
1044 printf("n=%-10d %d seconds\n", n, time(NULL) - nStart);
\r
1046 printf("stringstream:\n");
\r
1047 for (int n = 1000; n <= 4500000; n *= 2)
\r
1050 time_t nStart = time(NULL);
\r
1051 for (int i = 0; i < n; i++)
\r
1052 ss.write((char*)&vch[0], vch.size());
\r
1053 printf("n=%-10d %d seconds\n", n, time(NULL) - nStart);
\r
1068 // Automatic closing wrapper for FILE*
\r
1069 // - Will automatically close the file when it goes out of scope if not null.
\r
1070 // - If you're returning the file pointer, return file.release().
\r
1071 // - If you need to close the file early, use file.fclose() instead of fclose(file).
\r
1083 typedef FILE element_type;
\r
1085 CAutoFile(FILE* filenew=NULL, int nTypeIn=SER_DISK, int nVersionIn=VERSION)
\r
1089 nVersion = nVersionIn;
\r
1091 exceptmask = ios::badbit | ios::failbit;
\r
1101 if (file != NULL && file != stdin && file != stdout && file != stderr)
\r
1106 FILE* release() { FILE* ret = file; file = NULL; return ret; }
\r
1107 operator FILE*() { return file; }
\r
1108 FILE* operator->() { return file; }
\r
1109 FILE& operator*() { return *file; }
\r
1110 FILE** operator&() { return &file; }
\r
1111 FILE* operator=(FILE* pnew) { return file = pnew; }
\r
1112 bool operator!() { return (file == NULL); }
\r
1118 void setstate(short bits, const char* psz)
\r
1121 if (state & exceptmask)
\r
1122 throw std::ios_base::failure(psz);
\r
1125 bool fail() const { return state & (ios::badbit | ios::failbit); }
\r
1126 bool good() const { return state == 0; }
\r
1127 void clear(short n = 0) { state = n; }
\r
1128 short exceptions() { return exceptmask; }
\r
1129 short exceptions(short mask) { short prev = exceptmask; exceptmask = mask; setstate(0, "CAutoFile"); return prev; }
\r
1131 void SetType(int n) { nType = n; }
\r
1132 int GetType() { return nType; }
\r
1133 void SetVersion(int n) { nVersion = n; }
\r
1134 int GetVersion() { return nVersion; }
\r
1135 void ReadVersion() { *this >> nVersion; }
\r
1136 void WriteVersion() { *this << nVersion; }
\r
1138 CAutoFile& read(char* pch, int nSize)
\r
1141 throw std::ios_base::failure("CAutoFile::read : file handle is NULL");
\r
1142 if (fread(pch, 1, nSize, file) != nSize)
\r
1143 setstate(ios::failbit, feof(file) ? "CAutoFile::read : end of file" : "CAutoFile::read : fread failed");
\r
1147 CAutoFile& write(const char* pch, int nSize)
\r
1150 throw std::ios_base::failure("CAutoFile::write : file handle is NULL");
\r
1151 if (fwrite(pch, 1, nSize, file) != nSize)
\r
1152 setstate(ios::failbit, "CAutoFile::write : write failed");
\r
1156 template<typename T>
\r
1157 unsigned int GetSerializeSize(const T& obj)
\r
1159 // Tells the size of the object if serialized to this stream
\r
1160 return ::GetSerializeSize(obj, nType, nVersion);
\r
1163 template<typename T>
\r
1164 CAutoFile& operator<<(const T& obj)
\r
1166 // Serialize to this stream
\r
1168 throw std::ios_base::failure("CAutoFile::operator<< : file handle is NULL");
\r
1169 ::Serialize(*this, obj, nType, nVersion);
\r
1173 template<typename T>
\r
1174 CAutoFile& operator>>(T& obj)
\r
1176 // Unserialize from this stream
\r
1178 throw std::ios_base::failure("CAutoFile::operator>> : file handle is NULL");
\r
1179 ::Unserialize(*this, obj, nType, nVersion);
\r