bitcoin-v0_5_3-db

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