#ifndef BITCOIN_SERIALIZE_H
#define BITCOIN_SERIALIZE_H
-#include <string>
+#include <cassert>
#include <vector>
-#include <map>
#include <set>
-#include <cassert>
+#include <tuple>
+#include <type_traits>
#include <limits>
-#include <cstring>
#include <cstdio>
-
-#ifndef Q_MOC_RUN
-#include <boost/type_traits/is_fundamental.hpp>
-#include <boost/tuple/tuple.hpp>
-#include <boost/tuple/tuple_comparison.hpp>
-#include <boost/tuple/tuple_io.hpp>
-#endif
+#include <ios>
+#include <cinttypes>
+#include <map>
#if defined __USE_MINGW_ANSI_STDIO
#undef __USE_MINGW_ANSI_STDIO // This constant forces MinGW to conduct stupid behavior
#endif
-#include <inttypes.h>
-
-#include "allocators.h"
-#include "version.h"
class CScript;
-class CDataStream;
-class CAutoFile;
+
static const unsigned int MAX_SIZE = 0x02000000;
// Used to bypass the rule against non-const reference to temporary
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 \
- { \
- 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; \
- std::map<int, int> mapUnkIds; \
- {statements} \
- return nSerSize; \
- } \
- template<typename Stream> \
- 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 */ \
- std::map<int, int> mapUnkIds; \
- {statements} \
- } \
- template<typename Stream> \
- 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; \
- std::map<int, int> mapUnkIds; \
- assert(fGetSize||fWrite||fRead); /* suppress warning */ \
- {statements} \
- }
-
-#else
-
#define IMPLEMENT_SERIALIZE(statements) \
unsigned int GetSerializeSize(int nType, int nVersion) const \
{ \
{statements} \
}
-#endif
-
#define READWRITE(obj) (nSerSize += ::SerReadWrite(s, (obj), nType, nVersion, ser_action))
inline unsigned int GetSizeOfVarInt(I n)
{
int nRet = 0;
- while(true) {
+ for ( ; ; ) {
nRet++;
if (n <= 0x7F)
break;
{
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;
I ReadVarInt(Stream& is)
{
I n = 0;
- while(true) {
+ for ( ; ; ) {
unsigned char chData;
READDATA(is, chData);
n = (n << 7) | (chData & 0x7F);
template<typename Stream, typename C> void Unserialize(Stream& is, std::basic_string<C>& str, int, int=0);
// vector
-template<typename T, typename A> unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&);
-template<typename T, typename A> unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&);
+template<typename T, typename A> unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const std::true_type&);
+template<typename T, typename A> unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const std::false_type&);
template<typename T, typename A> inline unsigned int GetSerializeSize(const std::vector<T, A>& v, int nType, int nVersion);
-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&);
-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&);
+template<typename Stream, typename T, typename A> void Serialize_impl(Stream& os, const std::vector<T, A>& v, int nType, int nVersion, const std::true_type&);
+template<typename Stream, typename T, typename A> void Serialize_impl(Stream& os, const std::vector<T, A>& v, int nType, int nVersion, const std::false_type&);
template<typename Stream, typename T, typename A> inline void Serialize(Stream& os, const std::vector<T, A>& v, int nType, int nVersion);
-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&);
-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&);
+template<typename Stream, typename T, typename A> void Unserialize_impl(Stream& is, std::vector<T, A>& v, int nType, int nVersion, const std::true_type&);
+template<typename Stream, typename T, typename A> void Unserialize_impl(Stream& is, std::vector<T, A>& v, int nType, int nVersion, const std::false_type&);
template<typename Stream, typename T, typename A> inline void Unserialize(Stream& is, std::vector<T, A>& v, int nType, int nVersion);
// others derived from vector
template<typename Stream, typename K, typename T> void Unserialize(Stream& is, std::pair<K, T>& item, int nType, int nVersion);
// 3 tuple
-template<typename T0, typename T1, typename T2> unsigned int GetSerializeSize(const boost::tuple<T0, T1, T2>& item, int nType, int nVersion);
-template<typename Stream, typename T0, typename T1, typename T2> void Serialize(Stream& os, const boost::tuple<T0, T1, T2>& item, int nType, int nVersion);
-template<typename Stream, typename T0, typename T1, typename T2> void Unserialize(Stream& is, boost::tuple<T0, T1, T2>& item, int nType, int nVersion);
+template<typename T0, typename T1, typename T2> unsigned int GetSerializeSize(const std::tuple<T0, T1, T2>& item, int nType, int nVersion);
+template<typename Stream, typename T0, typename T1, typename T2> void Serialize(Stream& os, const std::tuple<T0, T1, T2>& item, int nType, int nVersion);
+template<typename Stream, typename T0, typename T1, typename T2> void Unserialize(Stream& is, std::tuple<T0, T1, T2>& item, int nType, int nVersion);
// 4 tuple
-template<typename T0, typename T1, typename T2, typename T3> unsigned int GetSerializeSize(const boost::tuple<T0, T1, T2, T3>& item, int nType, int nVersion);
-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);
-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);
+template<typename T0, typename T1, typename T2, typename T3> unsigned int GetSerializeSize(const std::tuple<T0, T1, T2, T3>& item, int nType, int nVersion);
+template<typename Stream, typename T0, typename T1, typename T2, typename T3> void Serialize(Stream& os, const std::tuple<T0, T1, T2, T3>& item, int nType, int nVersion);
+template<typename Stream, typename T0, typename T1, typename T2, typename T3> void Unserialize(Stream& is, std::tuple<T0, T1, T2, T3>& item, int nType, int nVersion);
// map
template<typename K, typename T, typename Pred, typename A> unsigned int GetSerializeSize(const std::map<K, T, Pred, A>& m, int nType, int nVersion);
// vector
//
template<typename T, typename A>
-unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&)
+unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const std::true_type&)
{
return (unsigned int)(GetSizeOfCompactSize(v.size()) + v.size() * sizeof(T));
}
template<typename T, typename A>
-unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&)
+unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const std::false_type&)
{
unsigned int nSize = GetSizeOfCompactSize(v.size());
for (typename std::vector<T, A>::const_iterator vi = v.begin(); vi != v.end(); ++vi)
template<typename T, typename A>
inline unsigned int GetSerializeSize(const std::vector<T, A>& v, int nType, int nVersion)
{
- return GetSerializeSize_impl(v, nType, nVersion, boost::is_fundamental<T>());
+ return GetSerializeSize_impl(v, nType, nVersion, std::is_fundamental<T>());
}
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&)
+void Serialize_impl(Stream& os, const std::vector<T, A>& v, int nType, int nVersion, const std::true_type&)
{
WriteCompactSize(os, v.size());
if (!v.empty())
}
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&)
+void Serialize_impl(Stream& os, const std::vector<T, A>& v, int nType, int nVersion, const std::false_type&)
{
WriteCompactSize(os, v.size());
for (typename std::vector<T, A>::const_iterator vi = v.begin(); vi != v.end(); ++vi)
template<typename Stream, typename T, typename A>
inline void Serialize(Stream& os, const std::vector<T, A>& v, int nType, int nVersion)
{
- Serialize_impl(os, v, nType, nVersion, boost::is_fundamental<T>());
+ Serialize_impl(os, v, nType, nVersion, std::is_fundamental<T>());
}
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&)
+void Unserialize_impl(Stream& is, std::vector<T, A>& 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();
}
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&)
+void Unserialize_impl(Stream& is, std::vector<T, A>& v, int nType, int nVersion, const std::false_type&)
{
v.clear();
unsigned int nSize = (unsigned int)(ReadCompactSize(is));
template<typename Stream, typename T, typename A>
inline void Unserialize(Stream& is, std::vector<T, A>& v, int nType, int nVersion)
{
- Unserialize_impl(is, v, nType, nVersion, boost::is_fundamental<T>());
+ Unserialize_impl(is, v, nType, nVersion, std::is_fundamental<T>());
}
// 3 tuple
//
template<typename T0, typename T1, typename T2>
-unsigned int GetSerializeSize(const boost::tuple<T0, T1, T2>& item, int nType, int nVersion)
+unsigned int GetSerializeSize(const std::tuple<T0, T1, T2>& 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<typename Stream, typename T0, typename T1, typename T2>
-void Serialize(Stream& os, const boost::tuple<T0, T1, T2>& item, int nType, int nVersion)
+void Serialize(Stream& os, const std::tuple<T0, T1, T2>& 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<typename Stream, typename T0, typename T1, typename T2>
-void Unserialize(Stream& is, boost::tuple<T0, T1, T2>& item, int nType, int nVersion)
+void Unserialize(Stream& is, std::tuple<T0, T1, T2>& 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);
}
// 4 tuple
//
template<typename T0, typename T1, typename T2, typename T3>
-unsigned int GetSerializeSize(const boost::tuple<T0, T1, T2, T3>& item, int nType, int nVersion)
+unsigned int GetSerializeSize(const std::tuple<T0, T1, T2, T3>& 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<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)
+void Serialize(Stream& os, const std::tuple<T0, T1, T2, T3>& 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<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)
+void Unserialize(Stream& is, std::tuple<T0, T1, T2, T3>& 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);
}
int nVersion;
};
-
-
-
-
-
-
-
-
-
-
-typedef std::vector<char, zero_after_free_allocator<char> > 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<char>& vchIn, int nTypeIn, int nVersionIn) : vch(vchIn.begin(), vchIn.end())
- {
- Init(nTypeIn, nVersionIn);
- }
-
- CDataStream(const std::vector<unsigned char>& 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 -= (unsigned int)(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<char>::const_iterator first, std::vector<char>::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 -= (unsigned int)(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 = (unsigned int)(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 -= (unsigned int)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)) != 0; }
- 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 (int)(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 = (int)(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");
- 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<typename Stream>
- 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<typename T>
- unsigned int GetSerializeSize(const T& obj)
- {
- // Tells the size of the object if serialized to this stream
- return ::GetSerializeSize(obj, nType, nVersion);
- }
-
- template<typename T>
- CDataStream& operator<<(const T& obj)
- {
- // Serialize to this stream
- ::Serialize(*this, obj, nType, nVersion);
- return (*this);
- }
-
- template<typename T>
- 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)) != 0; }
- 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<typename T>
- unsigned int GetSerializeSize(const T& obj)
- {
- // Tells the size of the object if serialized to this stream
- return ::GetSerializeSize(obj, nType, nVersion);
- }
-
- template<typename T>
- 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<typename T>
- 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<char> 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 = (unsigned int)(nSrcPos % vchBuf.size());
- unsigned int readNow = (unsigned int)(vchBuf.size() - pos);
- unsigned int nAvail = (unsigned int)(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 = (unsigned int)(nReadPos % vchBuf.size());
- size_t nNow = nSize;
- if (nNow + pos > vchBuf.size())
- nNow = (size_t)(vchBuf.size() - pos);
- if (nNow + nReadPos > nSrcPos)
- nNow = (size_t)(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 = (long)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<typename T>
- 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
git://git.novaco.in / novacoin.git / blobdiff