programmable-versionstring

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