raw
genesis                 1 // Copyright (c) 2009-2010 Satoshi Nakamoto
genesis                 2 // Copyright (c) 2009-2012 The Bitcoin developers
genesis                 3 // Distributed under the MIT/X11 software license, see the accompanying
genesis                 4 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
genesis                 5 #ifndef BITCOIN_SERIALIZE_H
genesis                 6 #define BITCOIN_SERIALIZE_H
genesis                 7 
genesis                 8 #include <string>
genesis                 9 #include <vector>
genesis                10 #include <map>
genesis                11 #include <set>
genesis                12 #include <cassert>
genesis                13 #include <climits>
genesis                14 #include <cstring>
genesis                15 #include <cstdio>
genesis                16 
genesis                17 #include <boost/type_traits/is_fundamental.hpp>
genesis                18 #include <boost/tuple/tuple.hpp>
genesis                19 #include <boost/tuple/tuple_comparison.hpp>
genesis                20 #include <boost/tuple/tuple_io.hpp>
genesis                21 
genesis                22 #if defined(_MSC_VER) || defined(__BORLANDC__)
genesis                23 typedef __int64  int64;
genesis                24 typedef unsigned __int64  uint64;
genesis                25 #else
genesis                26 typedef long long  int64;
genesis                27 typedef unsigned long long  uint64;
genesis                28 #endif
genesis                29 #if defined(_MSC_VER) && _MSC_VER < 1300
genesis                30 #define for  if (false) ; else for
genesis                31 #endif
genesis                32 
genesis                33 #ifdef WIN32
genesis                34 #include <windows.h>
genesis                35 // This is used to attempt to keep keying material out of swap
genesis                36 // Note that VirtualLock does not provide this as a guarantee on Windows,
genesis                37 // but, in practice, memory that has been VirtualLock'd almost never gets written to
genesis                38 // the pagefile except in rare circumstances where memory is extremely low.
genesis                39 #include <windows.h>
genesis                40 #define mlock(p, n) VirtualLock((p), (n));
genesis                41 #define munlock(p, n) VirtualUnlock((p), (n));
genesis                42 #else
genesis                43 #include <sys/mman.h>
genesis                44 #include <limits.h>
genesis                45 /* This comes from limits.h if it's not defined there set a sane default */
genesis                46 #ifndef PAGESIZE
genesis                47 #include <unistd.h>
genesis                48 #define PAGESIZE sysconf(_SC_PAGESIZE)
genesis                49 #endif
genesis                50 #define mlock(a,b) \
genesis                51   mlock(((void *)(((size_t)(a)) & (~((PAGESIZE)-1)))),\
genesis                52   (((((size_t)(a)) + (b) - 1) | ((PAGESIZE) - 1)) + 1) - (((size_t)(a)) & (~((PAGESIZE) - 1))))
genesis                53 #define munlock(a,b) \
genesis                54   munlock(((void *)(((size_t)(a)) & (~((PAGESIZE)-1)))),\
genesis                55   (((((size_t)(a)) + (b) - 1) | ((PAGESIZE) - 1)) + 1) - (((size_t)(a)) & (~((PAGESIZE) - 1))))
genesis                56 #endif
genesis                57 
genesis                58 class CScript;
genesis                59 class CDataStream;
genesis                60 class CAutoFile;
genesis                61 static const unsigned int MAX_SIZE = 0x02000000;
genesis                62 
genesis                63 static const int VERSION = 50300;
genesis                64 static const char* pszSubVer = "";
genesis                65 static const bool VERSION_IS_BETA = true;
genesis                66 
genesis                67 // Used to bypass the rule against non-const reference to temporary
genesis                68 // where it makes sense with wrappers such as CFlatData or CTxDB
genesis                69 template<typename T>
genesis                70 inline T& REF(const T& val)
genesis                71 {
genesis                72     return const_cast<T&>(val);
genesis                73 }
genesis                74 
genesis                75 /////////////////////////////////////////////////////////////////
genesis                76 //
genesis                77 // Templates for serializing to anything that looks like a stream,
genesis                78 // i.e. anything that supports .read(char*, int) and .write(char*, int)
genesis                79 //
genesis                80 
genesis                81 enum
genesis                82 {
genesis                83     // primary actions
genesis                84     SER_NETWORK         = (1 << 0),
genesis                85     SER_DISK            = (1 << 1),
genesis                86     SER_GETHASH         = (1 << 2),
genesis                87 
genesis                88     // modifiers
genesis                89     SER_SKIPSIG         = (1 << 16),
genesis                90     SER_BLOCKHEADERONLY = (1 << 17),
genesis                91 };
genesis                92 
genesis                93 #define IMPLEMENT_SERIALIZE(statements)    \
genesis                94     unsigned int GetSerializeSize(int nType=0, int nVersion=VERSION) const  \
genesis                95     {                                           \
genesis                96         CSerActionGetSerializeSize ser_action;  \
genesis                97         const bool fGetSize = true;             \
genesis                98         const bool fWrite = false;              \
genesis                99         const bool fRead = false;               \
genesis               100         unsigned int nSerSize = 0;              \
genesis               101         ser_streamplaceholder s;                \
genesis               102         assert(fGetSize||fWrite||fRead); /* suppress warning */ \
genesis               103         s.nType = nType;                        \
genesis               104         s.nVersion = nVersion;                  \
genesis               105         {statements}                            \
genesis               106         return nSerSize;                        \
genesis               107     }                                           \
genesis               108     template<typename Stream>                   \
genesis               109     void Serialize(Stream& s, int nType=0, int nVersion=VERSION) const  \
genesis               110     {                                           \
genesis               111         CSerActionSerialize ser_action;         \
genesis               112         const bool fGetSize = false;            \
genesis               113         const bool fWrite = true;               \
genesis               114         const bool fRead = false;               \
genesis               115         unsigned int nSerSize = 0;              \
genesis               116         assert(fGetSize||fWrite||fRead); /* suppress warning */ \
genesis               117         {statements}                            \
genesis               118     }                                           \
genesis               119     template<typename Stream>                   \
genesis               120     void Unserialize(Stream& s, int nType=0, int nVersion=VERSION)  \
genesis               121     {                                           \
genesis               122         CSerActionUnserialize ser_action;       \
genesis               123         const bool fGetSize = false;            \
genesis               124         const bool fWrite = false;              \
genesis               125         const bool fRead = true;                \
genesis               126         unsigned int nSerSize = 0;              \
genesis               127         assert(fGetSize||fWrite||fRead); /* suppress warning */ \
genesis               128         {statements}                            \
genesis               129     }
genesis               130 
genesis               131 #define READWRITE(obj)      (nSerSize += ::SerReadWrite(s, (obj), nType, nVersion, ser_action))
genesis               132 
genesis               133 
genesis               134 
genesis               135 
genesis               136 
genesis               137 
genesis               138 //
genesis               139 // Basic types
genesis               140 //
genesis               141 #define WRITEDATA(s, obj)   s.write((char*)&(obj), sizeof(obj))
genesis               142 #define READDATA(s, obj)    s.read((char*)&(obj), sizeof(obj))
genesis               143 
genesis               144 inline unsigned int GetSerializeSize(char a,           int, int=0) { return sizeof(a); }
genesis               145 inline unsigned int GetSerializeSize(signed char a,    int, int=0) { return sizeof(a); }
genesis               146 inline unsigned int GetSerializeSize(unsigned char a,  int, int=0) { return sizeof(a); }
genesis               147 inline unsigned int GetSerializeSize(signed short a,   int, int=0) { return sizeof(a); }
genesis               148 inline unsigned int GetSerializeSize(unsigned short a, int, int=0) { return sizeof(a); }
genesis               149 inline unsigned int GetSerializeSize(signed int a,     int, int=0) { return sizeof(a); }
genesis               150 inline unsigned int GetSerializeSize(unsigned int a,   int, int=0) { return sizeof(a); }
genesis               151 inline unsigned int GetSerializeSize(signed long a,    int, int=0) { return sizeof(a); }
genesis               152 inline unsigned int GetSerializeSize(unsigned long a,  int, int=0) { return sizeof(a); }
genesis               153 inline unsigned int GetSerializeSize(int64 a,          int, int=0) { return sizeof(a); }
genesis               154 inline unsigned int GetSerializeSize(uint64 a,         int, int=0) { return sizeof(a); }
genesis               155 inline unsigned int GetSerializeSize(float a,          int, int=0) { return sizeof(a); }
genesis               156 inline unsigned int GetSerializeSize(double a,         int, int=0) { return sizeof(a); }
genesis               157 
genesis               158 template<typename Stream> inline void Serialize(Stream& s, char a,           int, int=0) { WRITEDATA(s, a); }
genesis               159 template<typename Stream> inline void Serialize(Stream& s, signed char a,    int, int=0) { WRITEDATA(s, a); }
genesis               160 template<typename Stream> inline void Serialize(Stream& s, unsigned char a,  int, int=0) { WRITEDATA(s, a); }
genesis               161 template<typename Stream> inline void Serialize(Stream& s, signed short a,   int, int=0) { WRITEDATA(s, a); }
genesis               162 template<typename Stream> inline void Serialize(Stream& s, unsigned short a, int, int=0) { WRITEDATA(s, a); }
genesis               163 template<typename Stream> inline void Serialize(Stream& s, signed int a,     int, int=0) { WRITEDATA(s, a); }
genesis               164 template<typename Stream> inline void Serialize(Stream& s, unsigned int a,   int, int=0) { WRITEDATA(s, a); }
genesis               165 template<typename Stream> inline void Serialize(Stream& s, signed long a,    int, int=0) { WRITEDATA(s, a); }
genesis               166 template<typename Stream> inline void Serialize(Stream& s, unsigned long a,  int, int=0) { WRITEDATA(s, a); }
genesis               167 template<typename Stream> inline void Serialize(Stream& s, int64 a,          int, int=0) { WRITEDATA(s, a); }
genesis               168 template<typename Stream> inline void Serialize(Stream& s, uint64 a,         int, int=0) { WRITEDATA(s, a); }
genesis               169 template<typename Stream> inline void Serialize(Stream& s, float a,          int, int=0) { WRITEDATA(s, a); }
genesis               170 template<typename Stream> inline void Serialize(Stream& s, double a,         int, int=0) { WRITEDATA(s, a); }
genesis               171 
genesis               172 template<typename Stream> inline void Unserialize(Stream& s, char& a,           int, int=0) { READDATA(s, a); }
genesis               173 template<typename Stream> inline void Unserialize(Stream& s, signed char& a,    int, int=0) { READDATA(s, a); }
genesis               174 template<typename Stream> inline void Unserialize(Stream& s, unsigned char& a,  int, int=0) { READDATA(s, a); }
genesis               175 template<typename Stream> inline void Unserialize(Stream& s, signed short& a,   int, int=0) { READDATA(s, a); }
genesis               176 template<typename Stream> inline void Unserialize(Stream& s, unsigned short& a, int, int=0) { READDATA(s, a); }
genesis               177 template<typename Stream> inline void Unserialize(Stream& s, signed int& a,     int, int=0) { READDATA(s, a); }
genesis               178 template<typename Stream> inline void Unserialize(Stream& s, unsigned int& a,   int, int=0) { READDATA(s, a); }
genesis               179 template<typename Stream> inline void Unserialize(Stream& s, signed long& a,    int, int=0) { READDATA(s, a); }
genesis               180 template<typename Stream> inline void Unserialize(Stream& s, unsigned long& a,  int, int=0) { READDATA(s, a); }
genesis               181 template<typename Stream> inline void Unserialize(Stream& s, int64& a,          int, int=0) { READDATA(s, a); }
genesis               182 template<typename Stream> inline void Unserialize(Stream& s, uint64& a,         int, int=0) { READDATA(s, a); }
genesis               183 template<typename Stream> inline void Unserialize(Stream& s, float& a,          int, int=0) { READDATA(s, a); }
genesis               184 template<typename Stream> inline void Unserialize(Stream& s, double& a,         int, int=0) { READDATA(s, a); }
genesis               185 
genesis               186 inline unsigned int GetSerializeSize(bool a, int, int=0)                          { return sizeof(char); }
genesis               187 template<typename Stream> inline void Serialize(Stream& s, bool a, int, int=0)    { char f=a; WRITEDATA(s, f); }
genesis               188 template<typename Stream> inline void Unserialize(Stream& s, bool& a, int, int=0) { char f; READDATA(s, f); a=f; }
genesis               189 
genesis               190 
genesis               191 
genesis               192 
genesis               193 
genesis               194 
genesis               195 //
genesis               196 // Compact size
genesis               197 //  size <  253        -- 1 byte
genesis               198 //  size <= USHRT_MAX  -- 3 bytes  (253 + 2 bytes)
genesis               199 //  size <= UINT_MAX   -- 5 bytes  (254 + 4 bytes)
genesis               200 //  size >  UINT_MAX   -- 9 bytes  (255 + 8 bytes)
genesis               201 //
genesis               202 inline unsigned int GetSizeOfCompactSize(uint64 nSize)
genesis               203 {
genesis               204     if (nSize < 253)             return sizeof(unsigned char);
genesis               205     else if (nSize <= USHRT_MAX) return sizeof(unsigned char) + sizeof(unsigned short);
genesis               206     else if (nSize <= UINT_MAX)  return sizeof(unsigned char) + sizeof(unsigned int);
genesis               207     else                         return sizeof(unsigned char) + sizeof(uint64);
genesis               208 }
genesis               209 
genesis               210 template<typename Stream>
genesis               211 void WriteCompactSize(Stream& os, uint64 nSize)
genesis               212 {
genesis               213     if (nSize < 253)
genesis               214     {
genesis               215         unsigned char chSize = nSize;
genesis               216         WRITEDATA(os, chSize);
genesis               217     }
genesis               218     else if (nSize <= USHRT_MAX)
genesis               219     {
genesis               220         unsigned char chSize = 253;
genesis               221         unsigned short xSize = nSize;
genesis               222         WRITEDATA(os, chSize);
genesis               223         WRITEDATA(os, xSize);
genesis               224     }
genesis               225     else if (nSize <= UINT_MAX)
genesis               226     {
genesis               227         unsigned char chSize = 254;
genesis               228         unsigned int xSize = nSize;
genesis               229         WRITEDATA(os, chSize);
genesis               230         WRITEDATA(os, xSize);
genesis               231     }
genesis               232     else
genesis               233     {
genesis               234         unsigned char chSize = 255;
genesis               235         uint64 xSize = nSize;
genesis               236         WRITEDATA(os, chSize);
genesis               237         WRITEDATA(os, xSize);
genesis               238     }
genesis               239     return;
genesis               240 }
genesis               241 
genesis               242 template<typename Stream>
genesis               243 uint64 ReadCompactSize(Stream& is)
genesis               244 {
genesis               245     unsigned char chSize;
genesis               246     READDATA(is, chSize);
genesis               247     uint64 nSizeRet = 0;
genesis               248     if (chSize < 253)
genesis               249     {
genesis               250         nSizeRet = chSize;
genesis               251     }
genesis               252     else if (chSize == 253)
genesis               253     {
genesis               254         unsigned short xSize;
genesis               255         READDATA(is, xSize);
genesis               256         nSizeRet = xSize;
genesis               257     }
genesis               258     else if (chSize == 254)
genesis               259     {
genesis               260         unsigned int xSize;
genesis               261         READDATA(is, xSize);
genesis               262         nSizeRet = xSize;
genesis               263     }
genesis               264     else
genesis               265     {
genesis               266         uint64 xSize;
genesis               267         READDATA(is, xSize);
genesis               268         nSizeRet = xSize;
genesis               269     }
genesis               270     if (nSizeRet > (uint64)MAX_SIZE)
genesis               271         throw std::ios_base::failure("ReadCompactSize() : size too large");
genesis               272     return nSizeRet;
genesis               273 }
genesis               274 
genesis               275 
genesis               276 
genesis               277 //
genesis               278 // Wrapper for serializing arrays and POD
genesis               279 // There's a clever template way to make arrays serialize normally, but MSVC6 doesn't support it
genesis               280 //
genesis               281 #define FLATDATA(obj)   REF(CFlatData((char*)&(obj), (char*)&(obj) + sizeof(obj)))
genesis               282 class CFlatData
genesis               283 {
genesis               284 protected:
genesis               285     char* pbegin;
genesis               286     char* pend;
genesis               287 public:
genesis               288     CFlatData(void* pbeginIn, void* pendIn) : pbegin((char*)pbeginIn), pend((char*)pendIn) { }
genesis               289     char* begin() { return pbegin; }
genesis               290     const char* begin() const { return pbegin; }
genesis               291     char* end() { return pend; }
genesis               292     const char* end() const { return pend; }
genesis               293 
genesis               294     unsigned int GetSerializeSize(int, int=0) const
genesis               295     {
genesis               296         return pend - pbegin;
genesis               297     }
genesis               298 
genesis               299     template<typename Stream>
genesis               300     void Serialize(Stream& s, int, int=0) const
genesis               301     {
genesis               302         s.write(pbegin, pend - pbegin);
genesis               303     }
genesis               304 
genesis               305     template<typename Stream>
genesis               306     void Unserialize(Stream& s, int, int=0)
genesis               307     {
genesis               308         s.read(pbegin, pend - pbegin);
genesis               309     }
genesis               310 };
genesis               311 
genesis               312 
genesis               313 
genesis               314 //
genesis               315 // string stored as a fixed length field
genesis               316 //
genesis               317 template<std::size_t LEN>
genesis               318 class CFixedFieldString
genesis               319 {
genesis               320 protected:
genesis               321     const std::string* pcstr;
genesis               322     std::string* pstr;
genesis               323 public:
genesis               324     explicit CFixedFieldString(const std::string& str) : pcstr(&str), pstr(NULL) { }
genesis               325     explicit CFixedFieldString(std::string& str) : pcstr(&str), pstr(&str) { }
genesis               326 
genesis               327     unsigned int GetSerializeSize(int, int=0) const
genesis               328     {
genesis               329         return LEN;
genesis               330     }
genesis               331 
genesis               332     template<typename Stream>
genesis               333     void Serialize(Stream& s, int, int=0) const
genesis               334     {
genesis               335         char pszBuf[LEN];
genesis               336         strncpy(pszBuf, pcstr->c_str(), LEN);
genesis               337         s.write(pszBuf, LEN);
genesis               338     }
genesis               339 
genesis               340     template<typename Stream>
genesis               341     void Unserialize(Stream& s, int, int=0)
genesis               342     {
genesis               343         if (pstr == NULL)
genesis               344             throw std::ios_base::failure("CFixedFieldString::Unserialize : trying to unserialize to const string");
genesis               345         char pszBuf[LEN+1];
genesis               346         s.read(pszBuf, LEN);
genesis               347         pszBuf[LEN] = '\0';
genesis               348         *pstr = pszBuf;
genesis               349     }
genesis               350 };
genesis               351 
genesis               352 
genesis               353 
genesis               354 
genesis               355 
genesis               356 //
genesis               357 // Forward declarations
genesis               358 //
genesis               359 
genesis               360 // string
genesis               361 template<typename C> unsigned int GetSerializeSize(const std::basic_string<C>& str, int, int=0);
genesis               362 template<typename Stream, typename C> void Serialize(Stream& os, const std::basic_string<C>& str, int, int=0);
genesis               363 template<typename Stream, typename C> void Unserialize(Stream& is, std::basic_string<C>& str, int, int=0);
genesis               364 
genesis               365 // vector
genesis               366 template<typename T, typename A> unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&);
genesis               367 template<typename T, typename A> unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&);
genesis               368 template<typename T, typename A> inline unsigned int GetSerializeSize(const std::vector<T, A>& v, int nType, int nVersion=VERSION);
genesis               369 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&);
genesis               370 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&);
genesis               371 template<typename Stream, typename T, typename A> inline void Serialize(Stream& os, const std::vector<T, A>& v, int nType, int nVersion=VERSION);
genesis               372 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&);
genesis               373 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&);
genesis               374 template<typename Stream, typename T, typename A> inline void Unserialize(Stream& is, std::vector<T, A>& v, int nType, int nVersion=VERSION);
genesis               375 
genesis               376 // others derived from vector
genesis               377 extern inline unsigned int GetSerializeSize(const CScript& v, int nType, int nVersion=VERSION);
genesis               378 template<typename Stream> void Serialize(Stream& os, const CScript& v, int nType, int nVersion=VERSION);
genesis               379 template<typename Stream> void Unserialize(Stream& is, CScript& v, int nType, int nVersion=VERSION);
genesis               380 
genesis               381 // pair
genesis               382 template<typename K, typename T> unsigned int GetSerializeSize(const std::pair<K, T>& item, int nType, int nVersion=VERSION);
genesis               383 template<typename Stream, typename K, typename T> void Serialize(Stream& os, const std::pair<K, T>& item, int nType, int nVersion=VERSION);
genesis               384 template<typename Stream, typename K, typename T> void Unserialize(Stream& is, std::pair<K, T>& item, int nType, int nVersion=VERSION);
genesis               385 
genesis               386 // 3 tuple
genesis               387 template<typename T0, typename T1, typename T2> unsigned int GetSerializeSize(const boost::tuple<T0, T1, T2>& item, int nType, int nVersion=VERSION);
genesis               388 template<typename Stream, typename T0, typename T1, typename T2> void Serialize(Stream& os, const boost::tuple<T0, T1, T2>& item, int nType, int nVersion=VERSION);
genesis               389 template<typename Stream, typename T0, typename T1, typename T2> void Unserialize(Stream& is, boost::tuple<T0, T1, T2>& item, int nType, int nVersion=VERSION);
genesis               390 
genesis               391 // 4 tuple
genesis               392 template<typename T0, typename T1, typename T2, typename T3> unsigned int GetSerializeSize(const boost::tuple<T0, T1, T2, T3>& item, int nType, int nVersion=VERSION);
genesis               393 template<typename Stream, typename T0, typename T1, typename T2, typename T3> void Serialize(Stream& os, const boost::tuple<T0, T1, T2, T3>& item, int nType, int nVersion=VERSION);
genesis               394 template<typename Stream, typename T0, typename T1, typename T2, typename T3> void Unserialize(Stream& is, boost::tuple<T0, T1, T2, T3>& item, int nType, int nVersion=VERSION);
genesis               395 
genesis               396 // map
genesis               397 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);
genesis               398 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);
genesis               399 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);
genesis               400 
genesis               401 // set
genesis               402 template<typename K, typename Pred, typename A> unsigned int GetSerializeSize(const std::set<K, Pred, A>& m, int nType, int nVersion=VERSION);
genesis               403 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);
genesis               404 template<typename Stream, typename K, typename Pred, typename A> void Unserialize(Stream& is, std::set<K, Pred, A>& m, int nType, int nVersion=VERSION);
genesis               405 
genesis               406 
genesis               407 
genesis               408 
genesis               409 
genesis               410 //
genesis               411 // If none of the specialized versions above matched, default to calling member function.
genesis               412 // "int nType" is changed to "long nType" to keep from getting an ambiguous overload error.
genesis               413 // The compiler will only cast int to long if none of the other templates matched.
genesis               414 // Thanks to Boost serialization for this idea.
genesis               415 //
genesis               416 template<typename T>
genesis               417 inline unsigned int GetSerializeSize(const T& a, long nType, int nVersion=VERSION)
genesis               418 {
genesis               419     return a.GetSerializeSize((int)nType, nVersion);
genesis               420 }
genesis               421 
genesis               422 template<typename Stream, typename T>
genesis               423 inline void Serialize(Stream& os, const T& a, long nType, int nVersion=VERSION)
genesis               424 {
genesis               425     a.Serialize(os, (int)nType, nVersion);
genesis               426 }
genesis               427 
genesis               428 template<typename Stream, typename T>
genesis               429 inline void Unserialize(Stream& is, T& a, long nType, int nVersion=VERSION)
genesis               430 {
genesis               431     a.Unserialize(is, (int)nType, nVersion);
genesis               432 }
genesis               433 
genesis               434 
genesis               435 
genesis               436 
genesis               437 
genesis               438 //
genesis               439 // string
genesis               440 //
genesis               441 template<typename C>
genesis               442 unsigned int GetSerializeSize(const std::basic_string<C>& str, int, int)
genesis               443 {
genesis               444     return GetSizeOfCompactSize(str.size()) + str.size() * sizeof(str[0]);
genesis               445 }
genesis               446 
genesis               447 template<typename Stream, typename C>
genesis               448 void Serialize(Stream& os, const std::basic_string<C>& str, int, int)
genesis               449 {
genesis               450     WriteCompactSize(os, str.size());
genesis               451     if (!str.empty())
genesis               452         os.write((char*)&str[0], str.size() * sizeof(str[0]));
genesis               453 }
genesis               454 
genesis               455 template<typename Stream, typename C>
genesis               456 void Unserialize(Stream& is, std::basic_string<C>& str, int, int)
genesis               457 {
genesis               458     unsigned int nSize = ReadCompactSize(is);
genesis               459     str.resize(nSize);
genesis               460     if (nSize != 0)
genesis               461         is.read((char*)&str[0], nSize * sizeof(str[0]));
genesis               462 }
genesis               463 
genesis               464 
genesis               465 
genesis               466 //
genesis               467 // vector
genesis               468 //
genesis               469 template<typename T, typename A>
genesis               470 unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&)
genesis               471 {
genesis               472     return (GetSizeOfCompactSize(v.size()) + v.size() * sizeof(T));
genesis               473 }
genesis               474 
genesis               475 template<typename T, typename A>
genesis               476 unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&)
genesis               477 {
genesis               478     unsigned int nSize = GetSizeOfCompactSize(v.size());
genesis               479     for (typename std::vector<T, A>::const_iterator vi = v.begin(); vi != v.end(); ++vi)
genesis               480         nSize += GetSerializeSize((*vi), nType, nVersion);
genesis               481     return nSize;
genesis               482 }
genesis               483 
genesis               484 template<typename T, typename A>
genesis               485 inline unsigned int GetSerializeSize(const std::vector<T, A>& v, int nType, int nVersion)
genesis               486 {
genesis               487     return GetSerializeSize_impl(v, nType, nVersion, boost::is_fundamental<T>());
genesis               488 }
genesis               489 
genesis               490 
genesis               491 template<typename Stream, typename T, typename A>
genesis               492 void Serialize_impl(Stream& os, const std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&)
genesis               493 {
genesis               494     WriteCompactSize(os, v.size());
genesis               495     if (!v.empty())
genesis               496         os.write((char*)&v[0], v.size() * sizeof(T));
genesis               497 }
genesis               498 
genesis               499 template<typename Stream, typename T, typename A>
genesis               500 void Serialize_impl(Stream& os, const std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&)
genesis               501 {
genesis               502     WriteCompactSize(os, v.size());
genesis               503     for (typename std::vector<T, A>::const_iterator vi = v.begin(); vi != v.end(); ++vi)
genesis               504         ::Serialize(os, (*vi), nType, nVersion);
genesis               505 }
genesis               506 
genesis               507 template<typename Stream, typename T, typename A>
genesis               508 inline void Serialize(Stream& os, const std::vector<T, A>& v, int nType, int nVersion)
genesis               509 {
genesis               510     Serialize_impl(os, v, nType, nVersion, boost::is_fundamental<T>());
genesis               511 }
genesis               512 
genesis               513 
genesis               514 template<typename Stream, typename T, typename A>
genesis               515 void Unserialize_impl(Stream& is, std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&)
genesis               516 {
genesis               517     //unsigned int nSize = ReadCompactSize(is);
genesis               518     //v.resize(nSize);
genesis               519     //is.read((char*)&v[0], nSize * sizeof(T));
genesis               520 
genesis               521     // Limit size per read so bogus size value won't cause out of memory
genesis               522     v.clear();
genesis               523     unsigned int nSize = ReadCompactSize(is);
genesis               524     unsigned int i = 0;
genesis               525     while (i < nSize)
genesis               526     {
genesis               527         unsigned int blk = std::min(nSize - i, (unsigned int)(1 + 4999999 / sizeof(T)));
genesis               528         v.resize(i + blk);
genesis               529         is.read((char*)&v[i], blk * sizeof(T));
genesis               530         i += blk;
genesis               531     }
genesis               532 }
genesis               533 
genesis               534 template<typename Stream, typename T, typename A>
genesis               535 void Unserialize_impl(Stream& is, std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&)
genesis               536 {
genesis               537     //unsigned int nSize = ReadCompactSize(is);
genesis               538     //v.resize(nSize);
genesis               539     //for (std::vector<T, A>::iterator vi = v.begin(); vi != v.end(); ++vi)
genesis               540     //    Unserialize(is, (*vi), nType, nVersion);
genesis               541 
genesis               542     v.clear();
genesis               543     unsigned int nSize = ReadCompactSize(is);
genesis               544     unsigned int i = 0;
genesis               545     unsigned int nMid = 0;
genesis               546     while (nMid < nSize)
genesis               547     {
genesis               548         nMid += 5000000 / sizeof(T);
genesis               549         if (nMid > nSize)
genesis               550             nMid = nSize;
genesis               551         v.resize(nMid);
genesis               552         for (; i < nMid; i++)
genesis               553             Unserialize(is, v[i], nType, nVersion);
genesis               554     }
genesis               555 }
genesis               556 
genesis               557 template<typename Stream, typename T, typename A>
genesis               558 inline void Unserialize(Stream& is, std::vector<T, A>& v, int nType, int nVersion)
genesis               559 {
genesis               560     Unserialize_impl(is, v, nType, nVersion, boost::is_fundamental<T>());
genesis               561 }
genesis               562 
genesis               563 
genesis               564 
genesis               565 //
genesis               566 // others derived from vector
genesis               567 //
genesis               568 inline unsigned int GetSerializeSize(const CScript& v, int nType, int nVersion)
genesis               569 {
genesis               570     return GetSerializeSize((const std::vector<unsigned char>&)v, nType, nVersion);
genesis               571 }
genesis               572 
genesis               573 template<typename Stream>
genesis               574 void Serialize(Stream& os, const CScript& v, int nType, int nVersion)
genesis               575 {
genesis               576     Serialize(os, (const std::vector<unsigned char>&)v, nType, nVersion);
genesis               577 }
genesis               578 
genesis               579 template<typename Stream>
genesis               580 void Unserialize(Stream& is, CScript& v, int nType, int nVersion)
genesis               581 {
genesis               582     Unserialize(is, (std::vector<unsigned char>&)v, nType, nVersion);
genesis               583 }
genesis               584 
genesis               585 
genesis               586 
genesis               587 //
genesis               588 // pair
genesis               589 //
genesis               590 template<typename K, typename T>
genesis               591 unsigned int GetSerializeSize(const std::pair<K, T>& item, int nType, int nVersion)
genesis               592 {
genesis               593     return GetSerializeSize(item.first, nType, nVersion) + GetSerializeSize(item.second, nType, nVersion);
genesis               594 }
genesis               595 
genesis               596 template<typename Stream, typename K, typename T>
genesis               597 void Serialize(Stream& os, const std::pair<K, T>& item, int nType, int nVersion)
genesis               598 {
genesis               599     Serialize(os, item.first, nType, nVersion);
genesis               600     Serialize(os, item.second, nType, nVersion);
genesis               601 }
genesis               602 
genesis               603 template<typename Stream, typename K, typename T>
genesis               604 void Unserialize(Stream& is, std::pair<K, T>& item, int nType, int nVersion)
genesis               605 {
genesis               606     Unserialize(is, item.first, nType, nVersion);
genesis               607     Unserialize(is, item.second, nType, nVersion);
genesis               608 }
genesis               609 
genesis               610 
genesis               611 
genesis               612 //
genesis               613 // 3 tuple
genesis               614 //
genesis               615 template<typename T0, typename T1, typename T2>
genesis               616 unsigned int GetSerializeSize(const boost::tuple<T0, T1, T2>& item, int nType, int nVersion)
genesis               617 {
genesis               618     unsigned int nSize = 0;
genesis               619     nSize += GetSerializeSize(boost::get<0>(item), nType, nVersion);
genesis               620     nSize += GetSerializeSize(boost::get<1>(item), nType, nVersion);
genesis               621     nSize += GetSerializeSize(boost::get<2>(item), nType, nVersion);
genesis               622     return nSize;
genesis               623 }
genesis               624 
genesis               625 template<typename Stream, typename T0, typename T1, typename T2>
genesis               626 void Serialize(Stream& os, const boost::tuple<T0, T1, T2>& item, int nType, int nVersion)
genesis               627 {
genesis               628     Serialize(os, boost::get<0>(item), nType, nVersion);
genesis               629     Serialize(os, boost::get<1>(item), nType, nVersion);
genesis               630     Serialize(os, boost::get<2>(item), nType, nVersion);
genesis               631 }
genesis               632 
genesis               633 template<typename Stream, typename T0, typename T1, typename T2>
genesis               634 void Unserialize(Stream& is, boost::tuple<T0, T1, T2>& item, int nType, int nVersion)
genesis               635 {
genesis               636     Unserialize(is, boost::get<0>(item), nType, nVersion);
genesis               637     Unserialize(is, boost::get<1>(item), nType, nVersion);
genesis               638     Unserialize(is, boost::get<2>(item), nType, nVersion);
genesis               639 }
genesis               640 
genesis               641 
genesis               642 
genesis               643 //
genesis               644 // 4 tuple
genesis               645 //
genesis               646 template<typename T0, typename T1, typename T2, typename T3>
genesis               647 unsigned int GetSerializeSize(const boost::tuple<T0, T1, T2, T3>& item, int nType, int nVersion)
genesis               648 {
genesis               649     unsigned int nSize = 0;
genesis               650     nSize += GetSerializeSize(boost::get<0>(item), nType, nVersion);
genesis               651     nSize += GetSerializeSize(boost::get<1>(item), nType, nVersion);
genesis               652     nSize += GetSerializeSize(boost::get<2>(item), nType, nVersion);
genesis               653     nSize += GetSerializeSize(boost::get<3>(item), nType, nVersion);
genesis               654     return nSize;
genesis               655 }
genesis               656 
genesis               657 template<typename Stream, typename T0, typename T1, typename T2, typename T3>
genesis               658 void Serialize(Stream& os, const boost::tuple<T0, T1, T2, T3>& item, int nType, int nVersion)
genesis               659 {
genesis               660     Serialize(os, boost::get<0>(item), nType, nVersion);
genesis               661     Serialize(os, boost::get<1>(item), nType, nVersion);
genesis               662     Serialize(os, boost::get<2>(item), nType, nVersion);
genesis               663     Serialize(os, boost::get<3>(item), nType, nVersion);
genesis               664 }
genesis               665 
genesis               666 template<typename Stream, typename T0, typename T1, typename T2, typename T3>
genesis               667 void Unserialize(Stream& is, boost::tuple<T0, T1, T2, T3>& item, int nType, int nVersion)
genesis               668 {
genesis               669     Unserialize(is, boost::get<0>(item), nType, nVersion);
genesis               670     Unserialize(is, boost::get<1>(item), nType, nVersion);
genesis               671     Unserialize(is, boost::get<2>(item), nType, nVersion);
genesis               672     Unserialize(is, boost::get<3>(item), nType, nVersion);
genesis               673 }
genesis               674 
genesis               675 
genesis               676 
genesis               677 //
genesis               678 // map
genesis               679 //
genesis               680 template<typename K, typename T, typename Pred, typename A>
genesis               681 unsigned int GetSerializeSize(const std::map<K, T, Pred, A>& m, int nType, int nVersion)
genesis               682 {
genesis               683     unsigned int nSize = GetSizeOfCompactSize(m.size());
genesis               684     for (typename std::map<K, T, Pred, A>::const_iterator mi = m.begin(); mi != m.end(); ++mi)
genesis               685         nSize += GetSerializeSize((*mi), nType, nVersion);
genesis               686     return nSize;
genesis               687 }
genesis               688 
genesis               689 template<typename Stream, typename K, typename T, typename Pred, typename A>
genesis               690 void Serialize(Stream& os, const std::map<K, T, Pred, A>& m, int nType, int nVersion)
genesis               691 {
genesis               692     WriteCompactSize(os, m.size());
genesis               693     for (typename std::map<K, T, Pred, A>::const_iterator mi = m.begin(); mi != m.end(); ++mi)
genesis               694         Serialize(os, (*mi), nType, nVersion);
genesis               695 }
genesis               696 
genesis               697 template<typename Stream, typename K, typename T, typename Pred, typename A>
genesis               698 void Unserialize(Stream& is, std::map<K, T, Pred, A>& m, int nType, int nVersion)
genesis               699 {
genesis               700     m.clear();
genesis               701     unsigned int nSize = ReadCompactSize(is);
genesis               702     typename std::map<K, T, Pred, A>::iterator mi = m.begin();
genesis               703     for (unsigned int i = 0; i < nSize; i++)
genesis               704     {
genesis               705         std::pair<K, T> item;
genesis               706         Unserialize(is, item, nType, nVersion);
genesis               707         mi = m.insert(mi, item);
genesis               708     }
genesis               709 }
genesis               710 
genesis               711 
genesis               712 
genesis               713 //
genesis               714 // set
genesis               715 //
genesis               716 template<typename K, typename Pred, typename A>
genesis               717 unsigned int GetSerializeSize(const std::set<K, Pred, A>& m, int nType, int nVersion)
genesis               718 {
genesis               719     unsigned int nSize = GetSizeOfCompactSize(m.size());
genesis               720     for (typename std::set<K, Pred, A>::const_iterator it = m.begin(); it != m.end(); ++it)
genesis               721         nSize += GetSerializeSize((*it), nType, nVersion);
genesis               722     return nSize;
genesis               723 }
genesis               724 
genesis               725 template<typename Stream, typename K, typename Pred, typename A>
genesis               726 void Serialize(Stream& os, const std::set<K, Pred, A>& m, int nType, int nVersion)
genesis               727 {
genesis               728     WriteCompactSize(os, m.size());
genesis               729     for (typename std::set<K, Pred, A>::const_iterator it = m.begin(); it != m.end(); ++it)
genesis               730         Serialize(os, (*it), nType, nVersion);
genesis               731 }
genesis               732 
genesis               733 template<typename Stream, typename K, typename Pred, typename A>
genesis               734 void Unserialize(Stream& is, std::set<K, Pred, A>& m, int nType, int nVersion)
genesis               735 {
genesis               736     m.clear();
genesis               737     unsigned int nSize = ReadCompactSize(is);
genesis               738     typename std::set<K, Pred, A>::iterator it = m.begin();
genesis               739     for (unsigned int i = 0; i < nSize; i++)
genesis               740     {
genesis               741         K key;
genesis               742         Unserialize(is, key, nType, nVersion);
genesis               743         it = m.insert(it, key);
genesis               744     }
genesis               745 }
genesis               746 
genesis               747 
genesis               748 
genesis               749 //
genesis               750 // Support for IMPLEMENT_SERIALIZE and READWRITE macro
genesis               751 //
genesis               752 class CSerActionGetSerializeSize { };
genesis               753 class CSerActionSerialize { };
genesis               754 class CSerActionUnserialize { };
genesis               755 
genesis               756 template<typename Stream, typename T>
genesis               757 inline unsigned int SerReadWrite(Stream& s, const T& obj, int nType, int nVersion, CSerActionGetSerializeSize ser_action)
genesis               758 {
genesis               759     return ::GetSerializeSize(obj, nType, nVersion);
genesis               760 }
genesis               761 
genesis               762 template<typename Stream, typename T>
genesis               763 inline unsigned int SerReadWrite(Stream& s, const T& obj, int nType, int nVersion, CSerActionSerialize ser_action)
genesis               764 {
genesis               765     ::Serialize(s, obj, nType, nVersion);
genesis               766     return 0;
genesis               767 }
genesis               768 
genesis               769 template<typename Stream, typename T>
genesis               770 inline unsigned int SerReadWrite(Stream& s, T& obj, int nType, int nVersion, CSerActionUnserialize ser_action)
genesis               771 {
genesis               772     ::Unserialize(s, obj, nType, nVersion);
genesis               773     return 0;
genesis               774 }
genesis               775 
genesis               776 struct ser_streamplaceholder
genesis               777 {
genesis               778     int nType;
genesis               779     int nVersion;
genesis               780 };
genesis               781 
genesis               782 
genesis               783 
genesis               784 
genesis               785 
genesis               786 
genesis               787 
genesis               788 
genesis               789 
genesis               790 //
genesis               791 // Allocator that locks its contents from being paged
genesis               792 // out of memory and clears its contents before deletion.
genesis               793 //
genesis               794 template<typename T>
genesis               795 struct secure_allocator : public std::allocator<T>
genesis               796 {
genesis               797     // MSVC8 default copy constructor is broken
genesis               798     typedef std::allocator<T> base;
genesis               799     typedef typename base::size_type size_type;
genesis               800     typedef typename base::difference_type  difference_type;
genesis               801     typedef typename base::pointer pointer;
genesis               802     typedef typename base::const_pointer const_pointer;
genesis               803     typedef typename base::reference reference;
genesis               804     typedef typename base::const_reference const_reference;
genesis               805     typedef typename base::value_type value_type;
genesis               806     secure_allocator() throw() {}
genesis               807     secure_allocator(const secure_allocator& a) throw() : base(a) {}
genesis               808     template <typename U>
genesis               809     secure_allocator(const secure_allocator<U>& a) throw() : base(a) {}
genesis               810     ~secure_allocator() throw() {}
genesis               811     template<typename _Other> struct rebind
genesis               812     { typedef secure_allocator<_Other> other; };
genesis               813 
genesis               814     T* allocate(std::size_t n, const void *hint = 0)
genesis               815     {
genesis               816         T *p;
genesis               817         p = std::allocator<T>::allocate(n, hint);
genesis               818         if (p != NULL)
genesis               819             mlock(p, sizeof(T) * n);
genesis               820         return p;
genesis               821     }
genesis               822 
genesis               823     void deallocate(T* p, std::size_t n)
genesis               824     {
genesis               825         if (p != NULL)
genesis               826         {
genesis               827             memset(p, 0, sizeof(T) * n);
genesis               828             munlock(p, sizeof(T) * n);
genesis               829         }
genesis               830         std::allocator<T>::deallocate(p, n);
genesis               831     }
genesis               832 };
genesis               833 
genesis               834 
genesis               835 //
genesis               836 // Allocator that clears its contents before deletion.
genesis               837 //
genesis               838 template<typename T>
genesis               839 struct zero_after_free_allocator : public std::allocator<T>
genesis               840 {
genesis               841     // MSVC8 default copy constructor is broken
genesis               842     typedef std::allocator<T> base;
genesis               843     typedef typename base::size_type size_type;
genesis               844     typedef typename base::difference_type  difference_type;
genesis               845     typedef typename base::pointer pointer;
genesis               846     typedef typename base::const_pointer const_pointer;
genesis               847     typedef typename base::reference reference;
genesis               848     typedef typename base::const_reference const_reference;
genesis               849     typedef typename base::value_type value_type;
genesis               850     zero_after_free_allocator() throw() {}
genesis               851     zero_after_free_allocator(const zero_after_free_allocator& a) throw() : base(a) {}
genesis               852     template <typename U>
genesis               853     zero_after_free_allocator(const zero_after_free_allocator<U>& a) throw() : base(a) {}
genesis               854     ~zero_after_free_allocator() throw() {}
genesis               855     template<typename _Other> struct rebind
genesis               856     { typedef zero_after_free_allocator<_Other> other; };
genesis               857 
genesis               858     void deallocate(T* p, std::size_t n)
genesis               859     {
genesis               860         if (p != NULL)
genesis               861             memset(p, 0, sizeof(T) * n);
genesis               862         std::allocator<T>::deallocate(p, n);
genesis               863     }
genesis               864 };
genesis               865 
genesis               866 
genesis               867 
genesis               868 //
genesis               869 // Double ended buffer combining vector and stream-like interfaces.
genesis               870 // >> and << read and write unformatted data using the above serialization templates.
genesis               871 // Fills with data in linear time; some stringstream implementations take N^2 time.
genesis               872 //
genesis               873 class CDataStream
genesis               874 {
genesis               875 protected:
genesis               876     typedef std::vector<char, zero_after_free_allocator<char> > vector_type;
genesis               877     vector_type vch;
genesis               878     unsigned int nReadPos;
genesis               879     short state;
genesis               880     short exceptmask;
genesis               881 public:
genesis               882     int nType;
genesis               883     int nVersion;
genesis               884 
genesis               885     typedef vector_type::allocator_type   allocator_type;
genesis               886     typedef vector_type::size_type        size_type;
genesis               887     typedef vector_type::difference_type  difference_type;
genesis               888     typedef vector_type::reference        reference;
genesis               889     typedef vector_type::const_reference  const_reference;
genesis               890     typedef vector_type::value_type       value_type;
genesis               891     typedef vector_type::iterator         iterator;
genesis               892     typedef vector_type::const_iterator   const_iterator;
genesis               893     typedef vector_type::reverse_iterator reverse_iterator;
genesis               894 
genesis               895     explicit CDataStream(int nTypeIn=SER_NETWORK, int nVersionIn=VERSION)
genesis               896     {
genesis               897         Init(nTypeIn, nVersionIn);
genesis               898     }
genesis               899 
genesis               900     CDataStream(const_iterator pbegin, const_iterator pend, int nTypeIn=SER_NETWORK, int nVersionIn=VERSION) : vch(pbegin, pend)
genesis               901     {
genesis               902         Init(nTypeIn, nVersionIn);
genesis               903     }
genesis               904 
genesis               905 #if !defined(_MSC_VER) || _MSC_VER >= 1300
genesis               906     CDataStream(const char* pbegin, const char* pend, int nTypeIn=SER_NETWORK, int nVersionIn=VERSION) : vch(pbegin, pend)
genesis               907     {
genesis               908         Init(nTypeIn, nVersionIn);
genesis               909     }
genesis               910 #endif
genesis               911 
genesis               912     CDataStream(const vector_type& vchIn, int nTypeIn=SER_NETWORK, int nVersionIn=VERSION) : vch(vchIn.begin(), vchIn.end())
genesis               913     {
genesis               914         Init(nTypeIn, nVersionIn);
genesis               915     }
genesis               916 
genesis               917     CDataStream(const std::vector<char>& vchIn, int nTypeIn=SER_NETWORK, int nVersionIn=VERSION) : vch(vchIn.begin(), vchIn.end())
genesis               918     {
genesis               919         Init(nTypeIn, nVersionIn);
genesis               920     }
genesis               921 
genesis               922     CDataStream(const std::vector<unsigned char>& vchIn, int nTypeIn=SER_NETWORK, int nVersionIn=VERSION) : vch((char*)&vchIn.begin()[0], (char*)&vchIn.end()[0])
genesis               923     {
genesis               924         Init(nTypeIn, nVersionIn);
genesis               925     }
genesis               926 
genesis               927     void Init(int nTypeIn=SER_NETWORK, int nVersionIn=VERSION)
genesis               928     {
genesis               929         nReadPos = 0;
genesis               930         nType = nTypeIn;
genesis               931         nVersion = nVersionIn;
genesis               932         state = 0;
genesis               933         exceptmask = std::ios::badbit | std::ios::failbit;
genesis               934     }
genesis               935 
genesis               936     CDataStream& operator+=(const CDataStream& b)
genesis               937     {
genesis               938         vch.insert(vch.end(), b.begin(), b.end());
genesis               939         return *this;
genesis               940     }
genesis               941 
genesis               942     friend CDataStream operator+(const CDataStream& a, const CDataStream& b)
genesis               943     {
genesis               944         CDataStream ret = a;
genesis               945         ret += b;
genesis               946         return (ret);
genesis               947     }
genesis               948 
genesis               949     std::string str() const
genesis               950     {
genesis               951         return (std::string(begin(), end()));
genesis               952     }
genesis               953 
genesis               954 
genesis               955     //
genesis               956     // Vector subset
genesis               957     //
genesis               958     const_iterator begin() const                     { return vch.begin() + nReadPos; }
genesis               959     iterator begin()                                 { return vch.begin() + nReadPos; }
genesis               960     const_iterator end() const                       { return vch.end(); }
genesis               961     iterator end()                                   { return vch.end(); }
genesis               962     size_type size() const                           { return vch.size() - nReadPos; }
genesis               963     bool empty() const                               { return vch.size() == nReadPos; }
genesis               964     void resize(size_type n, value_type c=0)         { vch.resize(n + nReadPos, c); }
genesis               965     void reserve(size_type n)                        { vch.reserve(n + nReadPos); }
genesis               966     const_reference operator[](size_type pos) const  { return vch[pos + nReadPos]; }
genesis               967     reference operator[](size_type pos)              { return vch[pos + nReadPos]; }
genesis               968     void clear()                                     { vch.clear(); nReadPos = 0; }
genesis               969     iterator insert(iterator it, const char& x=char()) { return vch.insert(it, x); }
genesis               970     void insert(iterator it, size_type n, const char& x) { vch.insert(it, n, x); }
genesis               971 
genesis               972     void insert(iterator it, const_iterator first, const_iterator last)
genesis               973     {
genesis               974         if (it == vch.begin() + nReadPos && last - first <= nReadPos)
genesis               975         {
genesis               976             // special case for inserting at the front when there's room
genesis               977             nReadPos -= (last - first);
genesis               978             memcpy(&vch[nReadPos], &first[0], last - first);
genesis               979         }
genesis               980         else
genesis               981             vch.insert(it, first, last);
genesis               982     }
genesis               983 
genesis               984     void insert(iterator it, std::vector<char>::const_iterator first, std::vector<char>::const_iterator last)
genesis               985     {
genesis               986         if (it == vch.begin() + nReadPos && last - first <= nReadPos)
genesis               987         {
genesis               988             // special case for inserting at the front when there's room
genesis               989             nReadPos -= (last - first);
genesis               990             memcpy(&vch[nReadPos], &first[0], last - first);
genesis               991         }
genesis               992         else
genesis               993             vch.insert(it, first, last);
genesis               994     }
genesis               995 
genesis               996 #if !defined(_MSC_VER) || _MSC_VER >= 1300
genesis               997     void insert(iterator it, const char* first, const char* last)
genesis               998     {
genesis               999         if (it == vch.begin() + nReadPos && last - first <= nReadPos)
genesis              1000         {
genesis              1001             // special case for inserting at the front when there's room
genesis              1002             nReadPos -= (last - first);
genesis              1003             memcpy(&vch[nReadPos], &first[0], last - first);
genesis              1004         }
genesis              1005         else
genesis              1006             vch.insert(it, first, last);
genesis              1007     }
genesis              1008 #endif
genesis              1009 
genesis              1010     iterator erase(iterator it)
genesis              1011     {
genesis              1012         if (it == vch.begin() + nReadPos)
genesis              1013         {
genesis              1014             // special case for erasing from the front
genesis              1015             if (++nReadPos >= vch.size())
genesis              1016             {
genesis              1017                 // whenever we reach the end, we take the opportunity to clear the buffer
genesis              1018                 nReadPos = 0;
genesis              1019                 return vch.erase(vch.begin(), vch.end());
genesis              1020             }
genesis              1021             return vch.begin() + nReadPos;
genesis              1022         }
genesis              1023         else
genesis              1024             return vch.erase(it);
genesis              1025     }
genesis              1026 
genesis              1027     iterator erase(iterator first, iterator last)
genesis              1028     {
genesis              1029         if (first == vch.begin() + nReadPos)
genesis              1030         {
genesis              1031             // special case for erasing from the front
genesis              1032             if (last == vch.end())
genesis              1033             {
genesis              1034                 nReadPos = 0;
genesis              1035                 return vch.erase(vch.begin(), vch.end());
genesis              1036             }
genesis              1037             else
genesis              1038             {
genesis              1039                 nReadPos = (last - vch.begin());
genesis              1040                 return last;
genesis              1041             }
genesis              1042         }
genesis              1043         else
genesis              1044             return vch.erase(first, last);
genesis              1045     }
genesis              1046 
genesis              1047     inline void Compact()
genesis              1048     {
genesis              1049         vch.erase(vch.begin(), vch.begin() + nReadPos);
genesis              1050         nReadPos = 0;
genesis              1051     }
genesis              1052 
genesis              1053     bool Rewind(size_type n)
genesis              1054     {
genesis              1055         // Rewind by n characters if the buffer hasn't been compacted yet
genesis              1056         if (n > nReadPos)
genesis              1057             return false;
genesis              1058         nReadPos -= n;
genesis              1059         return true;
genesis              1060     }
genesis              1061 
genesis              1062 
genesis              1063     //
genesis              1064     // Stream subset
genesis              1065     //
genesis              1066     void setstate(short bits, const char* psz)
genesis              1067     {
genesis              1068         state |= bits;
genesis              1069         if (state & exceptmask)
genesis              1070             throw std::ios_base::failure(psz);
genesis              1071     }
genesis              1072 
genesis              1073     bool eof() const             { return size() == 0; }
genesis              1074     bool fail() const            { return state & (std::ios::badbit | std::ios::failbit); }
genesis              1075     bool good() const            { return !eof() && (state == 0); }
genesis              1076     void clear(short n)          { state = n; }  // name conflict with vector clear()
genesis              1077     short exceptions()           { return exceptmask; }
genesis              1078     short exceptions(short mask) { short prev = exceptmask; exceptmask = mask; setstate(0, "CDataStream"); return prev; }
genesis              1079     CDataStream* rdbuf()         { return this; }
genesis              1080     int in_avail()               { return size(); }
genesis              1081 
genesis              1082     void SetType(int n)          { nType = n; }
genesis              1083     int GetType()                { return nType; }
genesis              1084     void SetVersion(int n)       { nVersion = n; }
genesis              1085     int GetVersion()             { return nVersion; }
genesis              1086     void ReadVersion()           { *this >> nVersion; }
genesis              1087     void WriteVersion()          { *this << nVersion; }
genesis              1088 
genesis              1089     CDataStream& read(char* pch, int nSize)
genesis              1090     {
genesis              1091         // Read from the beginning of the buffer
genesis              1092         assert(nSize >= 0);
genesis              1093         unsigned int nReadPosNext = nReadPos + nSize;
genesis              1094         if (nReadPosNext >= vch.size())
genesis              1095         {
genesis              1096             if (nReadPosNext > vch.size())
genesis              1097             {
genesis              1098                 setstate(std::ios::failbit, "CDataStream::read() : end of data");
genesis              1099                 memset(pch, 0, nSize);
genesis              1100                 nSize = vch.size() - nReadPos;
genesis              1101             }
genesis              1102             memcpy(pch, &vch[nReadPos], nSize);
genesis              1103             nReadPos = 0;
genesis              1104             vch.clear();
genesis              1105             return (*this);
genesis              1106         }
genesis              1107         memcpy(pch, &vch[nReadPos], nSize);
genesis              1108         nReadPos = nReadPosNext;
genesis              1109         return (*this);
genesis              1110     }
genesis              1111 
genesis              1112     CDataStream& ignore(int nSize)
genesis              1113     {
genesis              1114         // Ignore from the beginning of the buffer
genesis              1115         assert(nSize >= 0);
genesis              1116         unsigned int nReadPosNext = nReadPos + nSize;
genesis              1117         if (nReadPosNext >= vch.size())
genesis              1118         {
genesis              1119             if (nReadPosNext > vch.size())
genesis              1120             {
genesis              1121                 setstate(std::ios::failbit, "CDataStream::ignore() : end of data");
genesis              1122                 nSize = vch.size() - nReadPos;
genesis              1123             }
genesis              1124             nReadPos = 0;
genesis              1125             vch.clear();
genesis              1126             return (*this);
genesis              1127         }
genesis              1128         nReadPos = nReadPosNext;
genesis              1129         return (*this);
genesis              1130     }
genesis              1131 
genesis              1132     CDataStream& write(const char* pch, int nSize)
genesis              1133     {
genesis              1134         // Write to the end of the buffer
genesis              1135         assert(nSize >= 0);
genesis              1136         vch.insert(vch.end(), pch, pch + nSize);
genesis              1137         return (*this);
genesis              1138     }
genesis              1139 
genesis              1140     template<typename Stream>
genesis              1141     void Serialize(Stream& s, int nType=0, int nVersion=VERSION) const
genesis              1142     {
genesis              1143         // Special case: stream << stream concatenates like stream += stream
genesis              1144         if (!vch.empty())
genesis              1145             s.write((char*)&vch[0], vch.size() * sizeof(vch[0]));
genesis              1146     }
genesis              1147 
genesis              1148     template<typename T>
genesis              1149     unsigned int GetSerializeSize(const T& obj)
genesis              1150     {
genesis              1151         // Tells the size of the object if serialized to this stream
genesis              1152         return ::GetSerializeSize(obj, nType, nVersion);
genesis              1153     }
genesis              1154 
genesis              1155     template<typename T>
genesis              1156     CDataStream& operator<<(const T& obj)
genesis              1157     {
genesis              1158         // Serialize to this stream
genesis              1159         ::Serialize(*this, obj, nType, nVersion);
genesis              1160         return (*this);
genesis              1161     }
genesis              1162 
genesis              1163     template<typename T>
genesis              1164     CDataStream& operator>>(T& obj)
genesis              1165     {
genesis              1166         // Unserialize from this stream
genesis              1167         ::Unserialize(*this, obj, nType, nVersion);
genesis              1168         return (*this);
genesis              1169     }
genesis              1170 };
genesis              1171 
genesis              1172 #ifdef TESTCDATASTREAM
genesis              1173 // VC6sp6
genesis              1174 // CDataStream:
genesis              1175 // n=1000       0 seconds
genesis              1176 // n=2000       0 seconds
genesis              1177 // n=4000       0 seconds
genesis              1178 // n=8000       0 seconds
genesis              1179 // n=16000      0 seconds
genesis              1180 // n=32000      0 seconds
genesis              1181 // n=64000      1 seconds
genesis              1182 // n=128000     1 seconds
genesis              1183 // n=256000     2 seconds
genesis              1184 // n=512000     4 seconds
genesis              1185 // n=1024000    8 seconds
genesis              1186 // n=2048000    16 seconds
genesis              1187 // n=4096000    32 seconds
genesis              1188 // stringstream:
genesis              1189 // n=1000       1 seconds
genesis              1190 // n=2000       1 seconds
genesis              1191 // n=4000       13 seconds
genesis              1192 // n=8000       87 seconds
genesis              1193 // n=16000      400 seconds
genesis              1194 // n=32000      1660 seconds
genesis              1195 // n=64000      6749 seconds
genesis              1196 // n=128000     27241 seconds
genesis              1197 // n=256000     109804 seconds
genesis              1198 #include <iostream>
genesis              1199 int main(int argc, char *argv[])
genesis              1200 {
genesis              1201     vector<unsigned char> vch(0xcc, 250);
genesis              1202     printf("CDataStream:\n");
genesis              1203     for (int n = 1000; n <= 4500000; n *= 2)
genesis              1204     {
genesis              1205         CDataStream ss;
genesis              1206         time_t nStart = time(NULL);
genesis              1207         for (int i = 0; i < n; i++)
genesis              1208             ss.write((char*)&vch[0], vch.size());
genesis              1209         printf("n=%-10d %d seconds\n", n, time(NULL) - nStart);
genesis              1210     }
genesis              1211     printf("stringstream:\n");
genesis              1212     for (int n = 1000; n <= 4500000; n *= 2)
genesis              1213     {
genesis              1214         stringstream ss;
genesis              1215         time_t nStart = time(NULL);
genesis              1216         for (int i = 0; i < n; i++)
genesis              1217             ss.write((char*)&vch[0], vch.size());
genesis              1218         printf("n=%-10d %d seconds\n", n, time(NULL) - nStart);
genesis              1219     }
genesis              1220 }
genesis              1221 #endif
genesis              1222 
genesis              1223 
genesis              1224 
genesis              1225 
genesis              1226 
genesis              1227 
genesis              1228 
genesis              1229 
genesis              1230 
genesis              1231 
genesis              1232 //
genesis              1233 // Automatic closing wrapper for FILE*
genesis              1234 //  - Will automatically close the file when it goes out of scope if not null.
genesis              1235 //  - If you're returning the file pointer, return file.release().
genesis              1236 //  - If you need to close the file early, use file.fclose() instead of fclose(file).
genesis              1237 //
genesis              1238 class CAutoFile
genesis              1239 {
genesis              1240 protected:
genesis              1241     FILE* file;
genesis              1242     short state;
genesis              1243     short exceptmask;
genesis              1244 public:
genesis              1245     int nType;
genesis              1246     int nVersion;
genesis              1247 
genesis              1248     typedef FILE element_type;
genesis              1249 
genesis              1250     CAutoFile(FILE* filenew=NULL, int nTypeIn=SER_DISK, int nVersionIn=VERSION)
genesis              1251     {
genesis              1252         file = filenew;
genesis              1253         nType = nTypeIn;
genesis              1254         nVersion = nVersionIn;
genesis              1255         state = 0;
genesis              1256         exceptmask = std::ios::badbit | std::ios::failbit;
genesis              1257     }
genesis              1258 
genesis              1259     ~CAutoFile()
genesis              1260     {
genesis              1261         fclose();
genesis              1262     }
genesis              1263 
genesis              1264     void fclose()
genesis              1265     {
genesis              1266         if (file != NULL && file != stdin && file != stdout && file != stderr)
genesis              1267             ::fclose(file);
genesis              1268         file = NULL;
genesis              1269     }
genesis              1270 
genesis              1271     FILE* release()             { FILE* ret = file; file = NULL; return ret; }
genesis              1272     operator FILE*()            { return file; }
genesis              1273     FILE* operator->()          { return file; }
genesis              1274     FILE& operator*()           { return *file; }
genesis              1275     FILE** operator&()          { return &file; }
genesis              1276     FILE* operator=(FILE* pnew) { return file = pnew; }
genesis              1277     bool operator!()            { return (file == NULL); }
genesis              1278 
genesis              1279 
genesis              1280     //
genesis              1281     // Stream subset
genesis              1282     //
genesis              1283     void setstate(short bits, const char* psz)
genesis              1284     {
genesis              1285         state |= bits;
genesis              1286         if (state & exceptmask)
genesis              1287             throw std::ios_base::failure(psz);
genesis              1288     }
genesis              1289 
genesis              1290     bool fail() const            { return state & (std::ios::badbit | std::ios::failbit); }
genesis              1291     bool good() const            { return state == 0; }
genesis              1292     void clear(short n = 0)      { state = n; }
genesis              1293     short exceptions()           { return exceptmask; }
genesis              1294     short exceptions(short mask) { short prev = exceptmask; exceptmask = mask; setstate(0, "CAutoFile"); return prev; }
genesis              1295 
genesis              1296     void SetType(int n)          { nType = n; }
genesis              1297     int GetType()                { return nType; }
genesis              1298     void SetVersion(int n)       { nVersion = n; }
genesis              1299     int GetVersion()             { return nVersion; }
genesis              1300     void ReadVersion()           { *this >> nVersion; }
genesis              1301     void WriteVersion()          { *this << nVersion; }
genesis              1302 
genesis              1303     CAutoFile& read(char* pch, int nSize)
genesis              1304     {
genesis              1305         if (!file)
genesis              1306             throw std::ios_base::failure("CAutoFile::read : file handle is NULL");
genesis              1307         if (fread(pch, 1, nSize, file) != nSize)
genesis              1308             setstate(std::ios::failbit, feof(file) ? "CAutoFile::read : end of file" : "CAutoFile::read : fread failed");
genesis              1309         return (*this);
genesis              1310     }
genesis              1311 
genesis              1312     CAutoFile& write(const char* pch, int nSize)
genesis              1313     {
genesis              1314         if (!file)
genesis              1315             throw std::ios_base::failure("CAutoFile::write : file handle is NULL");
genesis              1316         if (fwrite(pch, 1, nSize, file) != nSize)
genesis              1317             setstate(std::ios::failbit, "CAutoFile::write : write failed");
genesis              1318         return (*this);
genesis              1319     }
genesis              1320 
genesis              1321     template<typename T>
genesis              1322     unsigned int GetSerializeSize(const T& obj)
genesis              1323     {
genesis              1324         // Tells the size of the object if serialized to this stream
genesis              1325         return ::GetSerializeSize(obj, nType, nVersion);
genesis              1326     }
genesis              1327 
genesis              1328     template<typename T>
genesis              1329     CAutoFile& operator<<(const T& obj)
genesis              1330     {
genesis              1331         // Serialize to this stream
genesis              1332         if (!file)
genesis              1333             throw std::ios_base::failure("CAutoFile::operator<< : file handle is NULL");
genesis              1334         ::Serialize(*this, obj, nType, nVersion);
genesis              1335         return (*this);
genesis              1336     }
genesis              1337 
genesis              1338     template<typename T>
genesis              1339     CAutoFile& operator>>(T& obj)
genesis              1340     {
genesis              1341         // Unserialize from this stream
genesis              1342         if (!file)
genesis              1343             throw std::ios_base::failure("CAutoFile::operator>> : file handle is NULL");
genesis              1344         ::Unserialize(*this, obj, nType, nVersion);
genesis              1345         return (*this);
genesis              1346     }
genesis              1347 };
genesis              1348 
genesis              1349 #endif