X-Git-Url: https://git.novaco.in/?a=blobdiff_plain;f=src%2Fserialize.h;h=e9b6120a92cee76b371e1fa4148e6297607e5360;hb=HEAD;hp=3fa3ddf3eb42f4d62913af97470c5aab334f1a53;hpb=77a43545b4491b9703d803765da9059d2bdd5aaa;p=novacoin.git diff --git a/src/serialize.h b/src/serialize.h index 3fa3ddf..e9b6120 100644 --- a/src/serialize.h +++ b/src/serialize.h @@ -5,34 +5,24 @@ #ifndef BITCOIN_SERIALIZE_H #define BITCOIN_SERIALIZE_H -#include +#include #include -#include #include -#include +#include +#include #include -#include #include +#include +#include +#include -#ifndef Q_MOC_RUN -#include -#include -#include -#include -#endif - -#include "allocators.h" -#include "version.h" - -#ifdef _MSC_VER -#undef max +#if defined __USE_MINGW_ANSI_STDIO +#undef __USE_MINGW_ANSI_STDIO // This constant forces MinGW to conduct stupid behavior #endif -#include class CScript; -class CDataStream; -class CAutoFile; + static const unsigned int MAX_SIZE = 0x02000000; // Used to bypass the rule against non-const reference to temporary @@ -56,13 +46,12 @@ enum SER_DISK = (1 << 1), SER_GETHASH = (1 << 2), - // modifiers - SER_SKIPSIG = (1 << 16), - SER_BLOCKHEADERONLY = (1 << 17), + // modifiers + SER_SKIPSIG = (1 << 16), + SER_BLOCKHEADERONLY = (1 << 17) }; -#ifdef _MSC_VER #define IMPLEMENT_SERIALIZE(statements) \ unsigned int GetSerializeSize(int nType, int nVersion) const \ { \ @@ -75,7 +64,6 @@ enum assert(fGetSize||fWrite||fRead); /* suppress warning */ \ s.nType = nType; \ s.nVersion = nVersion; \ - std::map mapUnkIds; \ {statements} \ return nSerSize; \ } \ @@ -88,7 +76,6 @@ enum const bool fRead = false; \ unsigned int nSerSize = 0; \ assert(fGetSize||fWrite||fRead); /* suppress warning */ \ - std::map mapUnkIds; \ {statements} \ } \ template \ @@ -99,53 +86,10 @@ enum const bool fWrite = false; \ const bool fRead = true; \ unsigned int nSerSize = 0; \ - std::map mapUnkIds; \ assert(fGetSize||fWrite||fRead); /* suppress warning */ \ {statements} \ } -#else - -#define IMPLEMENT_SERIALIZE(statements) \ - unsigned int GetSerializeSize(int nType, int nVersion) const \ - { \ - CSerActionGetSerializeSize ser_action; \ - const bool fGetSize = true; \ - const bool fWrite = false; \ - const bool fRead = false; \ - unsigned int nSerSize = 0; \ - ser_streamplaceholder s; \ - assert(fGetSize||fWrite||fRead); /* suppress warning */ \ - s.nType = nType; \ - s.nVersion = nVersion; \ - {statements} \ - return nSerSize; \ - } \ - template \ - void Serialize(Stream& s, int nType, int nVersion) const \ - { \ - CSerActionSerialize ser_action; \ - const bool fGetSize = false; \ - const bool fWrite = true; \ - const bool fRead = false; \ - unsigned int nSerSize = 0; \ - assert(fGetSize||fWrite||fRead); /* suppress warning */ \ - {statements} \ - } \ - template \ - void Unserialize(Stream& s, int nType, int nVersion) \ - { \ - CSerActionUnserialize ser_action; \ - const bool fGetSize = false; \ - const bool fWrite = false; \ - const bool fRead = true; \ - unsigned int nSerSize = 0; \ - assert(fGetSize||fWrite||fRead); /* suppress warning */ \ - {statements} \ - } - -#endif - #define READWRITE(obj) (nSerSize += ::SerReadWrite(s, (obj), nType, nVersion, ser_action)) @@ -230,20 +174,20 @@ void WriteCompactSize(Stream& os, uint64_t nSize) { if (nSize < 253) { - unsigned char chSize = nSize; + unsigned char chSize = (unsigned char)nSize; WRITEDATA(os, chSize); } else if (nSize <= std::numeric_limits::max()) { unsigned char chSize = 253; - unsigned short xSize = nSize; + unsigned short xSize = (unsigned short)nSize; WRITEDATA(os, chSize); WRITEDATA(os, xSize); } else if (nSize <= std::numeric_limits::max()) { unsigned char chSize = 254; - unsigned int xSize = nSize; + unsigned int xSize = (unsigned int)nSize; WRITEDATA(os, chSize); WRITEDATA(os, xSize); } @@ -316,7 +260,7 @@ template inline unsigned int GetSizeOfVarInt(I n) { int nRet = 0; - while(true) { + for ( ; ; ) { nRet++; if (n <= 0x7F) break; @@ -330,7 +274,7 @@ void WriteVarInt(Stream& os, I n) { unsigned char tmp[(sizeof(n)*8+6)/7]; int len=0; - while(true) { + for ( ; ; ) { tmp[len] = (n & 0x7F) | (len ? 0x80 : 0x00); if (n <= 0x7F) break; @@ -346,7 +290,7 @@ template I ReadVarInt(Stream& is) { I n = 0; - while(true) { + for ( ; ; ) { unsigned char chData; READDATA(is, chData); n = (n << 7) | (chData & 0x7F); @@ -376,13 +320,13 @@ public: unsigned int GetSerializeSize(int, int=0) const { - return pend - pbegin; + return (unsigned int)(pend - pbegin); } template void Serialize(Stream& s, int, int=0) const { - s.write(pbegin, pend - pbegin); + s.write(pbegin, (int)(pend - pbegin)); } template @@ -428,14 +372,14 @@ template void Serialize(Stream& os, const std::basi template void Unserialize(Stream& is, std::basic_string& str, int, int=0); // vector -template unsigned int GetSerializeSize_impl(const std::vector& v, int nType, int nVersion, const boost::true_type&); -template unsigned int GetSerializeSize_impl(const std::vector& v, int nType, int nVersion, const boost::false_type&); +template unsigned int GetSerializeSize_impl(const std::vector& v, int nType, int nVersion, const std::true_type&); +template unsigned int GetSerializeSize_impl(const std::vector& v, int nType, int nVersion, const std::false_type&); template inline unsigned int GetSerializeSize(const std::vector& v, int nType, int nVersion); -template void Serialize_impl(Stream& os, const std::vector& v, int nType, int nVersion, const boost::true_type&); -template void Serialize_impl(Stream& os, const std::vector& v, int nType, int nVersion, const boost::false_type&); +template void Serialize_impl(Stream& os, const std::vector& v, int nType, int nVersion, const std::true_type&); +template void Serialize_impl(Stream& os, const std::vector& v, int nType, int nVersion, const std::false_type&); template inline void Serialize(Stream& os, const std::vector& v, int nType, int nVersion); -template void Unserialize_impl(Stream& is, std::vector& v, int nType, int nVersion, const boost::true_type&); -template void Unserialize_impl(Stream& is, std::vector& v, int nType, int nVersion, const boost::false_type&); +template void Unserialize_impl(Stream& is, std::vector& v, int nType, int nVersion, const std::true_type&); +template void Unserialize_impl(Stream& is, std::vector& v, int nType, int nVersion, const std::false_type&); template inline void Unserialize(Stream& is, std::vector& v, int nType, int nVersion); // others derived from vector @@ -449,14 +393,14 @@ template void Serialize(Stream& os, con template void Unserialize(Stream& is, std::pair& item, int nType, int nVersion); // 3 tuple -template unsigned int GetSerializeSize(const boost::tuple& item, int nType, int nVersion); -template void Serialize(Stream& os, const boost::tuple& item, int nType, int nVersion); -template void Unserialize(Stream& is, boost::tuple& item, int nType, int nVersion); +template unsigned int GetSerializeSize(const std::tuple& item, int nType, int nVersion); +template void Serialize(Stream& os, const std::tuple& item, int nType, int nVersion); +template void Unserialize(Stream& is, std::tuple& item, int nType, int nVersion); // 4 tuple -template unsigned int GetSerializeSize(const boost::tuple& item, int nType, int nVersion); -template void Serialize(Stream& os, const boost::tuple& item, int nType, int nVersion); -template void Unserialize(Stream& is, boost::tuple& item, int nType, int nVersion); +template unsigned int GetSerializeSize(const std::tuple& item, int nType, int nVersion); +template void Serialize(Stream& os, const std::tuple& item, int nType, int nVersion); +template void Unserialize(Stream& is, std::tuple& item, int nType, int nVersion); // map template unsigned int GetSerializeSize(const std::map& m, int nType, int nVersion); @@ -506,7 +450,7 @@ inline void Unserialize(Stream& is, T& a, long nType, int nVersion) template unsigned int GetSerializeSize(const std::basic_string& str, int, int) { - return GetSizeOfCompactSize(str.size()) + str.size() * sizeof(str[0]); + return (unsigned int)(GetSizeOfCompactSize(str.size()) + str.size() * sizeof(str[0])); } template @@ -514,13 +458,13 @@ void Serialize(Stream& os, const std::basic_string& str, int, int) { WriteCompactSize(os, str.size()); if (!str.empty()) - os.write((char*)&str[0], str.size() * sizeof(str[0])); + os.write((char*)&str[0], (int)(str.size() * sizeof(str[0]))); } template void Unserialize(Stream& is, std::basic_string& str, int, int) { - unsigned int nSize = ReadCompactSize(is); + unsigned int nSize = (unsigned int)(ReadCompactSize(is)); str.resize(nSize); if (nSize != 0) is.read((char*)&str[0], nSize * sizeof(str[0])); @@ -532,13 +476,13 @@ void Unserialize(Stream& is, std::basic_string& str, int, int) // vector // template -unsigned int GetSerializeSize_impl(const std::vector& v, int nType, int nVersion, const boost::true_type&) +unsigned int GetSerializeSize_impl(const std::vector& v, int nType, int nVersion, const std::true_type&) { - return (GetSizeOfCompactSize(v.size()) + v.size() * sizeof(T)); + return (unsigned int)(GetSizeOfCompactSize(v.size()) + v.size() * sizeof(T)); } template -unsigned int GetSerializeSize_impl(const std::vector& v, int nType, int nVersion, const boost::false_type&) +unsigned int GetSerializeSize_impl(const std::vector& v, int nType, int nVersion, const std::false_type&) { unsigned int nSize = GetSizeOfCompactSize(v.size()); for (typename std::vector::const_iterator vi = v.begin(); vi != v.end(); ++vi) @@ -549,20 +493,20 @@ unsigned int GetSerializeSize_impl(const std::vector& v, int nType, int nV template inline unsigned int GetSerializeSize(const std::vector& v, int nType, int nVersion) { - return GetSerializeSize_impl(v, nType, nVersion, boost::is_fundamental()); + return GetSerializeSize_impl(v, nType, nVersion, std::is_fundamental()); } template -void Serialize_impl(Stream& os, const std::vector& v, int nType, int nVersion, const boost::true_type&) +void Serialize_impl(Stream& os, const std::vector& v, int nType, int nVersion, const std::true_type&) { WriteCompactSize(os, v.size()); if (!v.empty()) - os.write((char*)&v[0], v.size() * sizeof(T)); + os.write((char*)&v[0], (int)(v.size() * sizeof(T))); } template -void Serialize_impl(Stream& os, const std::vector& v, int nType, int nVersion, const boost::false_type&) +void Serialize_impl(Stream& os, const std::vector& v, int nType, int nVersion, const std::false_type&) { WriteCompactSize(os, v.size()); for (typename std::vector::const_iterator vi = v.begin(); vi != v.end(); ++vi) @@ -572,16 +516,16 @@ void Serialize_impl(Stream& os, const std::vector& v, int nType, int nVers template inline void Serialize(Stream& os, const std::vector& v, int nType, int nVersion) { - Serialize_impl(os, v, nType, nVersion, boost::is_fundamental()); + Serialize_impl(os, v, nType, nVersion, std::is_fundamental()); } template -void Unserialize_impl(Stream& is, std::vector& v, int nType, int nVersion, const boost::true_type&) +void Unserialize_impl(Stream& is, std::vector& v, int nType, int nVersion, const std::true_type&) { // Limit size per read so bogus size value won't cause out of memory v.clear(); - unsigned int nSize = ReadCompactSize(is); + unsigned int nSize = (unsigned int)(ReadCompactSize(is)); unsigned int i = 0; while (i < nSize) { @@ -593,10 +537,10 @@ void Unserialize_impl(Stream& is, std::vector& v, int nType, int nVersion, } template -void Unserialize_impl(Stream& is, std::vector& v, int nType, int nVersion, const boost::false_type&) +void Unserialize_impl(Stream& is, std::vector& v, int nType, int nVersion, const std::false_type&) { v.clear(); - unsigned int nSize = ReadCompactSize(is); + unsigned int nSize = (unsigned int)(ReadCompactSize(is)); unsigned int i = 0; unsigned int nMid = 0; while (nMid < nSize) @@ -613,7 +557,7 @@ void Unserialize_impl(Stream& is, std::vector& v, int nType, int nVersion, template inline void Unserialize(Stream& is, std::vector& v, int nType, int nVersion) { - Unserialize_impl(is, v, nType, nVersion, boost::is_fundamental()); + Unserialize_impl(is, v, nType, nVersion, std::is_fundamental()); } @@ -669,29 +613,29 @@ void Unserialize(Stream& is, std::pair& item, int nType, int nVersion) // 3 tuple // template -unsigned int GetSerializeSize(const boost::tuple& item, int nType, int nVersion) +unsigned int GetSerializeSize(const std::tuple& item, int nType, int nVersion) { unsigned int nSize = 0; - nSize += GetSerializeSize(boost::get<0>(item), nType, nVersion); - nSize += GetSerializeSize(boost::get<1>(item), nType, nVersion); - nSize += GetSerializeSize(boost::get<2>(item), nType, nVersion); + nSize += GetSerializeSize(std::get<0>(item), nType, nVersion); + nSize += GetSerializeSize(std::get<1>(item), nType, nVersion); + nSize += GetSerializeSize(std::get<2>(item), nType, nVersion); return nSize; } template -void Serialize(Stream& os, const boost::tuple& item, int nType, int nVersion) +void Serialize(Stream& os, const std::tuple& item, int nType, int nVersion) { - Serialize(os, boost::get<0>(item), nType, nVersion); - Serialize(os, boost::get<1>(item), nType, nVersion); - Serialize(os, boost::get<2>(item), nType, nVersion); + Serialize(os, std::get<0>(item), nType, nVersion); + Serialize(os, std::get<1>(item), nType, nVersion); + Serialize(os, std::get<2>(item), nType, nVersion); } template -void Unserialize(Stream& is, boost::tuple& item, int nType, int nVersion) +void Unserialize(Stream& is, std::tuple& item, int nType, int nVersion) { - Unserialize(is, boost::get<0>(item), nType, nVersion); - Unserialize(is, boost::get<1>(item), nType, nVersion); - Unserialize(is, boost::get<2>(item), nType, nVersion); + Unserialize(is, std::get<0>(item), nType, nVersion); + Unserialize(is, std::get<1>(item), nType, nVersion); + Unserialize(is, std::get<2>(item), nType, nVersion); } @@ -700,32 +644,32 @@ void Unserialize(Stream& is, boost::tuple& item, int nType, int nVer // 4 tuple // template -unsigned int GetSerializeSize(const boost::tuple& item, int nType, int nVersion) +unsigned int GetSerializeSize(const std::tuple& item, int nType, int nVersion) { unsigned int nSize = 0; - nSize += GetSerializeSize(boost::get<0>(item), nType, nVersion); - nSize += GetSerializeSize(boost::get<1>(item), nType, nVersion); - nSize += GetSerializeSize(boost::get<2>(item), nType, nVersion); - nSize += GetSerializeSize(boost::get<3>(item), nType, nVersion); + nSize += GetSerializeSize(std::get<0>(item), nType, nVersion); + nSize += GetSerializeSize(std::get<1>(item), nType, nVersion); + nSize += GetSerializeSize(std::get<2>(item), nType, nVersion); + nSize += GetSerializeSize(std::get<3>(item), nType, nVersion); return nSize; } template -void Serialize(Stream& os, const boost::tuple& item, int nType, int nVersion) +void Serialize(Stream& os, const std::tuple& item, int nType, int nVersion) { - Serialize(os, boost::get<0>(item), nType, nVersion); - Serialize(os, boost::get<1>(item), nType, nVersion); - Serialize(os, boost::get<2>(item), nType, nVersion); - Serialize(os, boost::get<3>(item), nType, nVersion); + Serialize(os, std::get<0>(item), nType, nVersion); + Serialize(os, std::get<1>(item), nType, nVersion); + Serialize(os, std::get<2>(item), nType, nVersion); + Serialize(os, std::get<3>(item), nType, nVersion); } template -void Unserialize(Stream& is, boost::tuple& item, int nType, int nVersion) +void Unserialize(Stream& is, std::tuple& item, int nType, int nVersion) { - Unserialize(is, boost::get<0>(item), nType, nVersion); - Unserialize(is, boost::get<1>(item), nType, nVersion); - Unserialize(is, boost::get<2>(item), nType, nVersion); - Unserialize(is, boost::get<3>(item), nType, nVersion); + Unserialize(is, std::get<0>(item), nType, nVersion); + Unserialize(is, std::get<1>(item), nType, nVersion); + Unserialize(is, std::get<2>(item), nType, nVersion); + Unserialize(is, std::get<3>(item), nType, nVersion); } @@ -754,7 +698,7 @@ template void Unserialize(Stream& is, std::map& m, int nType, int nVersion) { m.clear(); - unsigned int nSize = ReadCompactSize(is); + unsigned int nSize = (unsigned int)(ReadCompactSize(is)); typename std::map::iterator mi = m.begin(); for (unsigned int i = 0; i < nSize; i++) { @@ -835,600 +779,4 @@ struct ser_streamplaceholder int nVersion; }; - - - - - - - - - - -typedef std::vector > CSerializeData; - -/** Double ended buffer combining vector and stream-like interfaces. - * - * >> and << read and write unformatted data using the above serialization templates. - * Fills with data in linear time; some stringstream implementations take N^2 time. - */ -class CDataStream -{ -protected: - typedef CSerializeData vector_type; - vector_type vch; - unsigned int nReadPos; - short state; - short exceptmask; -public: - int nType; - int nVersion; - - typedef vector_type::allocator_type allocator_type; - typedef vector_type::size_type size_type; - typedef vector_type::difference_type difference_type; - typedef vector_type::reference reference; - typedef vector_type::const_reference const_reference; - typedef vector_type::value_type value_type; - typedef vector_type::iterator iterator; - typedef vector_type::const_iterator const_iterator; - typedef vector_type::reverse_iterator reverse_iterator; - - explicit CDataStream(int nTypeIn, int nVersionIn) - { - Init(nTypeIn, nVersionIn); - } - - CDataStream(const_iterator pbegin, const_iterator pend, int nTypeIn, int nVersionIn) : vch(pbegin, pend) - { - Init(nTypeIn, nVersionIn); - } - -#if !defined(_MSC_VER) || _MSC_VER >= 1300 - CDataStream(const char* pbegin, const char* pend, int nTypeIn, int nVersionIn) : vch(pbegin, pend) - { - Init(nTypeIn, nVersionIn); - } -#endif - - CDataStream(const vector_type& vchIn, int nTypeIn, int nVersionIn) : vch(vchIn.begin(), vchIn.end()) - { - Init(nTypeIn, nVersionIn); - } - - CDataStream(const std::vector& vchIn, int nTypeIn, int nVersionIn) : vch(vchIn.begin(), vchIn.end()) - { - Init(nTypeIn, nVersionIn); - } - - CDataStream(const std::vector& vchIn, int nTypeIn, int nVersionIn) : vch(vchIn.begin(), vchIn.end()) - { - Init(nTypeIn, nVersionIn); - } - - void Init(int nTypeIn, int nVersionIn) - { - nReadPos = 0; - nType = nTypeIn; - nVersion = nVersionIn; - state = 0; - exceptmask = std::ios::badbit | std::ios::failbit; - } - - CDataStream& operator+=(const CDataStream& b) - { - vch.insert(vch.end(), b.begin(), b.end()); - return *this; - } - - friend CDataStream operator+(const CDataStream& a, const CDataStream& b) - { - CDataStream ret = a; - ret += b; - return (ret); - } - - std::string str() const - { - return (std::string(begin(), end())); - } - - - // - // Vector subset - // - const_iterator begin() const { return vch.begin() + nReadPos; } - iterator begin() { return vch.begin() + nReadPos; } - const_iterator end() const { return vch.end(); } - iterator end() { return vch.end(); } - size_type size() const { return vch.size() - nReadPos; } - bool empty() const { return vch.size() == nReadPos; } - void resize(size_type n, value_type c=0) { vch.resize(n + nReadPos, c); } - void reserve(size_type n) { vch.reserve(n + nReadPos); } - const_reference operator[](size_type pos) const { return vch[pos + nReadPos]; } - reference operator[](size_type pos) { return vch[pos + nReadPos]; } - void clear() { vch.clear(); nReadPos = 0; } - iterator insert(iterator it, const char& x=char()) { return vch.insert(it, x); } - void insert(iterator it, size_type n, const char& x) { vch.insert(it, n, x); } - -#ifdef _MSC_VER - void insert(iterator it, const_iterator first, const_iterator last) - { - assert(last - first >= 0); - if (it == vch.begin() + nReadPos && (unsigned int)(last - first) <= nReadPos) - { - // special case for inserting at the front when there's room - nReadPos -= (last - first); - memcpy(&vch[nReadPos], &first[0], last - first); - } - else - vch.insert(it, first, last); - } -#endif - -#ifndef _MSC_VER - void insert(iterator it, std::vector::const_iterator first, std::vector::const_iterator last) - { - assert(last - first >= 0); - if (it == vch.begin() + nReadPos && (unsigned int)(last - first) <= nReadPos) - { - // special case for inserting at the front when there's room - nReadPos -= (last - first); - memcpy(&vch[nReadPos], &first[0], last - first); - } - else - vch.insert(it, first, last); - } -#endif - -#if !defined(_MSC_VER) || _MSC_VER >= 1300 - void insert(iterator it, const char* first, const char* last) - { - assert(last - first >= 0); - if (it == vch.begin() + nReadPos && (unsigned int)(last - first) <= nReadPos) - { - // special case for inserting at the front when there's room - nReadPos -= (last - first); - memcpy(&vch[nReadPos], &first[0], last - first); - } - else - vch.insert(it, first, last); - } -#endif - - iterator erase(iterator it) - { - if (it == vch.begin() + nReadPos) - { - // special case for erasing from the front - if (++nReadPos >= vch.size()) - { - // whenever we reach the end, we take the opportunity to clear the buffer - nReadPos = 0; - return vch.erase(vch.begin(), vch.end()); - } - return vch.begin() + nReadPos; - } - else - return vch.erase(it); - } - - iterator erase(iterator first, iterator last) - { - if (first == vch.begin() + nReadPos) - { - // special case for erasing from the front - if (last == vch.end()) - { - nReadPos = 0; - return vch.erase(vch.begin(), vch.end()); - } - else - { - nReadPos = (last - vch.begin()); - return last; - } - } - else - return vch.erase(first, last); - } - - inline void Compact() - { - vch.erase(vch.begin(), vch.begin() + nReadPos); - nReadPos = 0; - } - - bool Rewind(size_type n) - { - // Rewind by n characters if the buffer hasn't been compacted yet - if (n > nReadPos) - return false; - nReadPos -= n; - return true; - } - - - // - // Stream subset - // - void setstate(short bits, const char* psz) - { - state |= bits; - if (state & exceptmask) - throw std::ios_base::failure(psz); - } - - bool eof() const { return size() == 0; } - bool fail() const { return state & (std::ios::badbit | std::ios::failbit); } - bool good() const { return !eof() && (state == 0); } - void clear(short n) { state = n; } // name conflict with vector clear() - short exceptions() { return exceptmask; } - short exceptions(short mask) { short prev = exceptmask; exceptmask = mask; setstate(0, "CDataStream"); return prev; } - CDataStream* rdbuf() { return this; } - int in_avail() { return size(); } - - void SetType(int n) { nType = n; } - int GetType() { return nType; } - void SetVersion(int n) { nVersion = n; } - int GetVersion() { return nVersion; } - void ReadVersion() { *this >> nVersion; } - void WriteVersion() { *this << nVersion; } - - CDataStream& read(char* pch, int nSize) - { - // Read from the beginning of the buffer - assert(nSize >= 0); - unsigned int nReadPosNext = nReadPos + nSize; - if (nReadPosNext >= vch.size()) - { - if (nReadPosNext > vch.size()) - { - setstate(std::ios::failbit, "CDataStream::read() : end of data"); - memset(pch, 0, nSize); - nSize = vch.size() - nReadPos; - } - memcpy(pch, &vch[nReadPos], nSize); - nReadPos = 0; - vch.clear(); - return (*this); - } - memcpy(pch, &vch[nReadPos], nSize); - nReadPos = nReadPosNext; - return (*this); - } - - CDataStream& ignore(int nSize) - { - // Ignore from the beginning of the buffer - assert(nSize >= 0); - unsigned int nReadPosNext = nReadPos + nSize; - if (nReadPosNext >= vch.size()) - { - if (nReadPosNext > vch.size()) - { - setstate(std::ios::failbit, "CDataStream::ignore() : end of data"); - nSize = vch.size() - nReadPos; - } - nReadPos = 0; - vch.clear(); - return (*this); - } - nReadPos = nReadPosNext; - return (*this); - } - - CDataStream& write(const char* pch, int nSize) - { - // Write to the end of the buffer - assert(nSize >= 0); - vch.insert(vch.end(), pch, pch + nSize); - return (*this); - } - - template - void Serialize(Stream& s, int nType, int nVersion) const - { - // Special case: stream << stream concatenates like stream += stream - if (!vch.empty()) - s.write((char*)&vch[0], vch.size() * sizeof(vch[0])); - } - - template - unsigned int GetSerializeSize(const T& obj) - { - // Tells the size of the object if serialized to this stream - return ::GetSerializeSize(obj, nType, nVersion); - } - - template - CDataStream& operator<<(const T& obj) - { - // Serialize to this stream - ::Serialize(*this, obj, nType, nVersion); - return (*this); - } - - template - CDataStream& operator>>(T& obj) - { - // Unserialize from this stream - ::Unserialize(*this, obj, nType, nVersion); - return (*this); - } - - void GetAndClear(CSerializeData &data) { - vch.swap(data); - CSerializeData().swap(vch); - } -}; - - - - - - - - - - -/** RAII wrapper for FILE*. - * - * Will automatically close the file when it goes out of scope if not null. - * If you're returning the file pointer, return file.release(). - * If you need to close the file early, use file.fclose() instead of fclose(file). - */ -class CAutoFile -{ -protected: - FILE* file; - short state; - short exceptmask; -public: - int nType; - int nVersion; - - CAutoFile(FILE* filenew, int nTypeIn, int nVersionIn) - { - file = filenew; - nType = nTypeIn; - nVersion = nVersionIn; - state = 0; - exceptmask = std::ios::badbit | std::ios::failbit; - } - - ~CAutoFile() - { - fclose(); - } - - void fclose() - { - if (file != NULL && file != stdin && file != stdout && file != stderr) - ::fclose(file); - file = NULL; - } - - FILE* release() { FILE* ret = file; file = NULL; return ret; } - operator FILE*() { return file; } - FILE* operator->() { return file; } - FILE& operator*() { return *file; } - FILE** operator&() { return &file; } - FILE* operator=(FILE* pnew) { return file = pnew; } - bool operator!() { return (file == NULL); } - - - // - // Stream subset - // - void setstate(short bits, const char* psz) - { - state |= bits; - if (state & exceptmask) - throw std::ios_base::failure(psz); - } - - bool fail() const { return state & (std::ios::badbit | std::ios::failbit); } - bool good() const { return state == 0; } - void clear(short n = 0) { state = n; } - short exceptions() { return exceptmask; } - short exceptions(short mask) { short prev = exceptmask; exceptmask = mask; setstate(0, "CAutoFile"); return prev; } - - void SetType(int n) { nType = n; } - int GetType() { return nType; } - void SetVersion(int n) { nVersion = n; } - int GetVersion() { return nVersion; } - void ReadVersion() { *this >> nVersion; } - void WriteVersion() { *this << nVersion; } - - CAutoFile& read(char* pch, size_t nSize) - { - if (!file) - throw std::ios_base::failure("CAutoFile::read : file handle is NULL"); - if (fread(pch, 1, nSize, file) != nSize) - setstate(std::ios::failbit, feof(file) ? "CAutoFile::read : end of file" : "CAutoFile::read : fread failed"); - return (*this); - } - - CAutoFile& write(const char* pch, size_t nSize) - { - if (!file) - throw std::ios_base::failure("CAutoFile::write : file handle is NULL"); - if (fwrite(pch, 1, nSize, file) != nSize) - setstate(std::ios::failbit, "CAutoFile::write : write failed"); - return (*this); - } - - template - unsigned int GetSerializeSize(const T& obj) - { - // Tells the size of the object if serialized to this stream - return ::GetSerializeSize(obj, nType, nVersion); - } - - template - CAutoFile& operator<<(const T& obj) - { - // Serialize to this stream - if (!file) - throw std::ios_base::failure("CAutoFile::operator<< : file handle is NULL"); - ::Serialize(*this, obj, nType, nVersion); - return (*this); - } - - template - CAutoFile& operator>>(T& obj) - { - // Unserialize from this stream - if (!file) - throw std::ios_base::failure("CAutoFile::operator>> : file handle is NULL"); - ::Unserialize(*this, obj, nType, nVersion); - return (*this); - } -}; - -/** Wrapper around a FILE* that implements a ring buffer to - * deserialize from. It guarantees the ability to rewind - * a given number of bytes. */ -class CBufferedFile -{ -private: - FILE *src; // source file - uint64_t nSrcPos; // how many bytes have been read from source - uint64_t nReadPos; // how many bytes have been read from this - uint64_t nReadLimit; // up to which position we're allowed to read - uint64_t nRewind; // how many bytes we guarantee to rewind - std::vector vchBuf; // the buffer - - short state; - short exceptmask; - -protected: - void setstate(short bits, const char *psz) { - state |= bits; - if (state & exceptmask) - throw std::ios_base::failure(psz); - } - - // read data from the source to fill the buffer - bool Fill() { - unsigned int pos = nSrcPos % vchBuf.size(); - unsigned int readNow = vchBuf.size() - pos; - unsigned int nAvail = vchBuf.size() - (nSrcPos - nReadPos) - nRewind; - if (nAvail < readNow) - readNow = nAvail; - if (readNow == 0) - return false; - size_t read = fread((void*)&vchBuf[pos], 1, readNow, src); - if (read == 0) { - setstate(std::ios_base::failbit, feof(src) ? "CBufferedFile::Fill : end of file" : "CBufferedFile::Fill : fread failed"); - return false; - } else { - nSrcPos += read; - return true; - } - } - -public: - int nType; - int nVersion; - - CBufferedFile(FILE *fileIn, uint64_t nBufSize, uint64_t nRewindIn, int nTypeIn, int nVersionIn) : - src(fileIn), nSrcPos(0), nReadPos(0), nReadLimit((uint64_t)(-1)), nRewind(nRewindIn), vchBuf(nBufSize, 0), - state(0), exceptmask(std::ios_base::badbit | std::ios_base::failbit), nType(nTypeIn), nVersion(nVersionIn) { - } - - // check whether no error occurred - bool good() const { - return state == 0; - } - - // check whether we're at the end of the source file - bool eof() const { - return nReadPos == nSrcPos && feof(src); - } - - // read a number of bytes - CBufferedFile& read(char *pch, size_t nSize) { - if (nSize + nReadPos > nReadLimit) - throw std::ios_base::failure("Read attempted past buffer limit"); - if (nSize + nRewind > vchBuf.size()) - throw std::ios_base::failure("Read larger than buffer size"); - while (nSize > 0) { - if (nReadPos == nSrcPos) - Fill(); - unsigned int pos = nReadPos % vchBuf.size(); - size_t nNow = nSize; - if (nNow + pos > vchBuf.size()) - nNow = vchBuf.size() - pos; - if (nNow + nReadPos > nSrcPos) - nNow = nSrcPos - nReadPos; - memcpy(pch, &vchBuf[pos], nNow); - nReadPos += nNow; - pch += nNow; - nSize -= nNow; - } - return (*this); - } - - // return the current reading position - uint64_t GetPos() { - return nReadPos; - } - - // rewind to a given reading position - bool SetPos(uint64_t nPos) { - nReadPos = nPos; - if (nReadPos + nRewind < nSrcPos) { - nReadPos = nSrcPos - nRewind; - return false; - } else if (nReadPos > nSrcPos) { - nReadPos = nSrcPos; - return false; - } else { - return true; - } - } - - bool Seek(uint64_t nPos) { - long nLongPos = nPos; - if (nPos != (uint64_t)nLongPos) - return false; - if (fseek(src, nLongPos, SEEK_SET)) - return false; - nLongPos = ftell(src); - nSrcPos = nLongPos; - nReadPos = nLongPos; - state = 0; - return true; - } - - // prevent reading beyond a certain position - // no argument removes the limit - bool SetLimit(uint64_t nPos = (uint64_t)(-1)) { - if (nPos < nReadPos) - return false; - nReadLimit = nPos; - return true; - } - - template - CBufferedFile& operator>>(T& obj) { - // Unserialize from this stream - ::Unserialize(*this, obj, nType, nVersion); - return (*this); - } - - // search for a given byte in the stream, and remain positioned on it - void FindByte(char ch) { - while (true) { - if (nReadPos == nSrcPos) - Fill(); - if (vchBuf[nReadPos % vchBuf.size()] == ch) - break; - nReadPos++; - } - } -}; - #endif