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https://github.com/dashpay/dash.git
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boost: split stream classes out of serialize.h
serialization now has no dependencies.
This commit is contained in:
parent
25cc1cf8dc
commit
fa7361907a
@ -107,6 +107,7 @@ BITCOIN_CORE_H = \
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script/sign.h \
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script/standard.h \
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serialize.h \
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streams.h \
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sync.h \
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threadsafety.h \
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timedata.h \
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@ -6,6 +6,7 @@
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#include "hash.h"
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#include "serialize.h"
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#include "streams.h"
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using namespace std;
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@ -9,6 +9,7 @@
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#include <map>
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#include <string>
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#include <string.h>
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#include <vector>
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#include <boost/thread/mutex.hpp>
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#include <boost/thread/once.hpp>
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@ -261,4 +262,7 @@ struct zero_after_free_allocator : public std::allocator<T> {
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// This is exactly like std::string, but with a custom allocator.
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typedef std::basic_string<char, std::char_traits<char>, secure_allocator<char> > SecureString;
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// Byte-vector that clears its contents before deletion.
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typedef std::vector<char, zero_after_free_allocator<char> > CSerializeData;
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#endif // BITCOIN_ALLOCATORS_H
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@ -7,6 +7,7 @@
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#include "core.h"
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#include "script/script.h"
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#include "script/standard.h"
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#include "streams.h"
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#include <math.h>
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#include <stdlib.h>
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@ -7,6 +7,7 @@
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#include "core.h"
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#include "script/script.h"
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#include "serialize.h"
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#include "streams.h"
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#include "univalue/univalue.h"
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#include "util.h"
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#include "utilstrencodings.h"
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@ -9,6 +9,7 @@
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#include "script/script.h"
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#include "script/standard.h"
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#include "serialize.h"
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#include "streams.h"
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#include "univalue/univalue.h"
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#include "util.h"
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#include "utilmoneystr.h"
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1
src/db.h
1
src/db.h
@ -7,6 +7,7 @@
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#define BITCOIN_DB_H
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#include "serialize.h"
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#include "streams.h"
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#include "sync.h"
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#include "version.h"
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@ -6,6 +6,7 @@
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#define BITCOIN_LEVELDBWRAPPER_H
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#include "serialize.h"
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#include "streams.h"
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#include "util.h"
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#include "version.h"
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@ -14,6 +14,7 @@
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#include "netbase.h"
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#include "protocol.h"
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#include "random.h"
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#include "streams.h"
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#include "sync.h"
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#include "uint256.h"
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#include "utilstrencodings.h"
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@ -7,6 +7,7 @@
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#include "bitcoinunits.h"
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#include "guiutil.h"
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#include "optionsmodel.h"
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#include "streams.h"
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#include <boost/foreach.hpp>
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553
src/serialize.h
553
src/serialize.h
@ -6,8 +6,6 @@
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#ifndef BITCOIN_SERIALIZE_H
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#define BITCOIN_SERIALIZE_H
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#include "allocators.h"
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#include <algorithm>
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#include <assert.h>
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#include <ios>
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@ -20,8 +18,6 @@
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#include <utility>
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#include <vector>
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class CAutoFile;
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class CDataStream;
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class CScript;
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static const unsigned int MAX_SIZE = 0x02000000;
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@ -761,8 +757,6 @@ inline void SerReadWrite(Stream& s, T& obj, int nType, int nVersion, CSerActionU
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typedef std::vector<char, zero_after_free_allocator<char> > CSerializeData;
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class CSizeComputer
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{
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protected:
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@ -792,551 +786,4 @@ public:
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}
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};
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/** Double ended buffer combining vector and stream-like interfaces.
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*
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* >> and << read and write unformatted data using the above serialization templates.
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* Fills with data in linear time; some stringstream implementations take N^2 time.
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*/
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class CDataStream
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{
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protected:
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typedef CSerializeData vector_type;
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vector_type vch;
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unsigned int nReadPos;
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public:
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int nType;
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int nVersion;
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typedef vector_type::allocator_type allocator_type;
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typedef vector_type::size_type size_type;
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typedef vector_type::difference_type difference_type;
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typedef vector_type::reference reference;
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typedef vector_type::const_reference const_reference;
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typedef vector_type::value_type value_type;
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typedef vector_type::iterator iterator;
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typedef vector_type::const_iterator const_iterator;
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typedef vector_type::reverse_iterator reverse_iterator;
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explicit CDataStream(int nTypeIn, int nVersionIn)
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{
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Init(nTypeIn, nVersionIn);
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}
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CDataStream(const_iterator pbegin, const_iterator pend, int nTypeIn, int nVersionIn) : vch(pbegin, pend)
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{
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Init(nTypeIn, nVersionIn);
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}
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#if !defined(_MSC_VER) || _MSC_VER >= 1300
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CDataStream(const char* pbegin, const char* pend, int nTypeIn, int nVersionIn) : vch(pbegin, pend)
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{
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Init(nTypeIn, nVersionIn);
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}
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#endif
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CDataStream(const vector_type& vchIn, int nTypeIn, int nVersionIn) : vch(vchIn.begin(), vchIn.end())
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{
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Init(nTypeIn, nVersionIn);
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}
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CDataStream(const std::vector<char>& vchIn, int nTypeIn, int nVersionIn) : vch(vchIn.begin(), vchIn.end())
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{
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Init(nTypeIn, nVersionIn);
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}
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CDataStream(const std::vector<unsigned char>& vchIn, int nTypeIn, int nVersionIn) : vch(vchIn.begin(), vchIn.end())
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{
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Init(nTypeIn, nVersionIn);
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}
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void Init(int nTypeIn, int nVersionIn)
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{
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nReadPos = 0;
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nType = nTypeIn;
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nVersion = nVersionIn;
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}
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CDataStream& operator+=(const CDataStream& b)
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{
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vch.insert(vch.end(), b.begin(), b.end());
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return *this;
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}
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friend CDataStream operator+(const CDataStream& a, const CDataStream& b)
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{
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CDataStream ret = a;
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ret += b;
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return (ret);
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}
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std::string str() const
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{
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return (std::string(begin(), end()));
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}
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//
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// Vector subset
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//
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const_iterator begin() const { return vch.begin() + nReadPos; }
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iterator begin() { return vch.begin() + nReadPos; }
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const_iterator end() const { return vch.end(); }
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iterator end() { return vch.end(); }
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size_type size() const { return vch.size() - nReadPos; }
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bool empty() const { return vch.size() == nReadPos; }
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void resize(size_type n, value_type c=0) { vch.resize(n + nReadPos, c); }
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void reserve(size_type n) { vch.reserve(n + nReadPos); }
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const_reference operator[](size_type pos) const { return vch[pos + nReadPos]; }
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reference operator[](size_type pos) { return vch[pos + nReadPos]; }
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void clear() { vch.clear(); nReadPos = 0; }
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iterator insert(iterator it, const char& x=char()) { return vch.insert(it, x); }
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void insert(iterator it, size_type n, const char& x) { vch.insert(it, n, x); }
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void insert(iterator it, std::vector<char>::const_iterator first, std::vector<char>::const_iterator last)
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{
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assert(last - first >= 0);
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if (it == vch.begin() + nReadPos && (unsigned int)(last - first) <= nReadPos)
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{
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// special case for inserting at the front when there's room
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nReadPos -= (last - first);
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memcpy(&vch[nReadPos], &first[0], last - first);
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}
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else
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vch.insert(it, first, last);
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}
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#if !defined(_MSC_VER) || _MSC_VER >= 1300
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void insert(iterator it, const char* first, const char* last)
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{
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assert(last - first >= 0);
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if (it == vch.begin() + nReadPos && (unsigned int)(last - first) <= nReadPos)
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{
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// special case for inserting at the front when there's room
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nReadPos -= (last - first);
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memcpy(&vch[nReadPos], &first[0], last - first);
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}
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else
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vch.insert(it, first, last);
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}
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#endif
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iterator erase(iterator it)
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{
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if (it == vch.begin() + nReadPos)
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{
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// special case for erasing from the front
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if (++nReadPos >= vch.size())
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{
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// whenever we reach the end, we take the opportunity to clear the buffer
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nReadPos = 0;
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return vch.erase(vch.begin(), vch.end());
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}
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return vch.begin() + nReadPos;
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}
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else
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return vch.erase(it);
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}
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iterator erase(iterator first, iterator last)
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{
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if (first == vch.begin() + nReadPos)
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{
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// special case for erasing from the front
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if (last == vch.end())
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{
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nReadPos = 0;
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return vch.erase(vch.begin(), vch.end());
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}
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else
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{
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nReadPos = (last - vch.begin());
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return last;
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}
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}
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else
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return vch.erase(first, last);
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}
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inline void Compact()
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{
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vch.erase(vch.begin(), vch.begin() + nReadPos);
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nReadPos = 0;
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}
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bool Rewind(size_type n)
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{
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// Rewind by n characters if the buffer hasn't been compacted yet
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if (n > nReadPos)
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return false;
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nReadPos -= n;
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return true;
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}
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//
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// Stream subset
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//
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bool eof() const { return size() == 0; }
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CDataStream* rdbuf() { return this; }
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int in_avail() { return size(); }
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void SetType(int n) { nType = n; }
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int GetType() { return nType; }
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void SetVersion(int n) { nVersion = n; }
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int GetVersion() { return nVersion; }
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void ReadVersion() { *this >> nVersion; }
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void WriteVersion() { *this << nVersion; }
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CDataStream& read(char* pch, size_t nSize)
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{
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// Read from the beginning of the buffer
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unsigned int nReadPosNext = nReadPos + nSize;
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if (nReadPosNext >= vch.size())
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{
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if (nReadPosNext > vch.size())
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{
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throw std::ios_base::failure("CDataStream::read() : end of data");
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}
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memcpy(pch, &vch[nReadPos], nSize);
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nReadPos = 0;
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vch.clear();
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return (*this);
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}
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memcpy(pch, &vch[nReadPos], nSize);
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nReadPos = nReadPosNext;
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return (*this);
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}
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CDataStream& ignore(int nSize)
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{
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// Ignore from the beginning of the buffer
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assert(nSize >= 0);
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unsigned int nReadPosNext = nReadPos + nSize;
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if (nReadPosNext >= vch.size())
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{
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if (nReadPosNext > vch.size())
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throw std::ios_base::failure("CDataStream::ignore() : end of data");
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nReadPos = 0;
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vch.clear();
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return (*this);
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}
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nReadPos = nReadPosNext;
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return (*this);
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}
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CDataStream& write(const char* pch, size_t nSize)
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{
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// Write to the end of the buffer
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vch.insert(vch.end(), pch, pch + nSize);
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return (*this);
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}
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template<typename Stream>
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void Serialize(Stream& s, int nType, int nVersion) const
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{
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// Special case: stream << stream concatenates like stream += stream
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if (!vch.empty())
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s.write((char*)&vch[0], vch.size() * sizeof(vch[0]));
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}
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template<typename T>
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unsigned int GetSerializeSize(const T& obj)
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{
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// Tells the size of the object if serialized to this stream
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return ::GetSerializeSize(obj, nType, nVersion);
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}
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template<typename T>
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CDataStream& operator<<(const T& obj)
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{
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// Serialize to this stream
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::Serialize(*this, obj, nType, nVersion);
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return (*this);
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}
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template<typename T>
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CDataStream& operator>>(T& obj)
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{
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// Unserialize from this stream
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::Unserialize(*this, obj, nType, nVersion);
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return (*this);
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}
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void GetAndClear(CSerializeData &data) {
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data.insert(data.end(), begin(), end());
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clear();
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}
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};
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/** Non-refcounted RAII wrapper for FILE*
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*
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* Will automatically close the file when it goes out of scope if not null.
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* If you're returning the file pointer, return file.release().
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* If you need to close the file early, use file.fclose() instead of fclose(file).
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*/
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class CAutoFile
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{
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private:
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// Disallow copies
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CAutoFile(const CAutoFile&);
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CAutoFile& operator=(const CAutoFile&);
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int nType;
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int nVersion;
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FILE* file;
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public:
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CAutoFile(FILE* filenew, int nTypeIn, int nVersionIn)
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{
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file = filenew;
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nType = nTypeIn;
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nVersion = nVersionIn;
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}
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~CAutoFile()
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{
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fclose();
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}
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void fclose()
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{
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if (file) {
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::fclose(file);
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file = NULL;
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}
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}
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/** Get wrapped FILE* with transfer of ownership.
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* @note This will invalidate the CAutoFile object, and makes it the responsibility of the caller
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* of this function to clean up the returned FILE*.
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*/
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FILE* release() { FILE* ret = file; file = NULL; return ret; }
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/** Get wrapped FILE* without transfer of ownership.
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* @note Ownership of the FILE* will remain with this class. Use this only if the scope of the
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* CAutoFile outlives use of the passed pointer.
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*/
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FILE* Get() const { return file; }
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/** Return true if the wrapped FILE* is NULL, false otherwise.
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*/
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bool IsNull() const { return (file == NULL); }
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//
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// Stream subset
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//
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void SetType(int n) { nType = n; }
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int GetType() { return nType; }
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void SetVersion(int n) { nVersion = n; }
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int GetVersion() { return nVersion; }
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void ReadVersion() { *this >> nVersion; }
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void WriteVersion() { *this << nVersion; }
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CAutoFile& read(char* pch, size_t nSize)
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{
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if (!file)
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throw std::ios_base::failure("CAutoFile::read : file handle is NULL");
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if (fread(pch, 1, nSize, file) != nSize)
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throw std::ios_base::failure(feof(file) ? "CAutoFile::read : end of file" : "CAutoFile::read : fread failed");
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return (*this);
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}
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CAutoFile& write(const char* pch, size_t nSize)
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{
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if (!file)
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throw std::ios_base::failure("CAutoFile::write : file handle is NULL");
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if (fwrite(pch, 1, nSize, file) != nSize)
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throw std::ios_base::failure("CAutoFile::write : write failed");
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return (*this);
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}
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template<typename T>
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unsigned int GetSerializeSize(const T& obj)
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{
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// Tells the size of the object if serialized to this stream
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return ::GetSerializeSize(obj, nType, nVersion);
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}
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template<typename T>
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CAutoFile& operator<<(const T& obj)
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{
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// Serialize to this stream
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if (!file)
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throw std::ios_base::failure("CAutoFile::operator<< : file handle is NULL");
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::Serialize(*this, obj, nType, nVersion);
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return (*this);
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||||
}
|
||||
|
||||
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);
|
||||
}
|
||||
};
|
||||
|
||||
/** Non-refcounted RAII wrapper around a FILE* that implements a ring buffer to
|
||||
* deserialize from. It guarantees the ability to rewind a given number of bytes.
|
||||
*
|
||||
* Will automatically close the file when it goes out of scope if not null.
|
||||
* If you need to close the file early, use file.fclose() instead of fclose(file).
|
||||
*/
|
||||
class CBufferedFile
|
||||
{
|
||||
private:
|
||||
// Disallow copies
|
||||
CBufferedFile(const CBufferedFile&);
|
||||
CBufferedFile& operator=(const CBufferedFile&);
|
||||
|
||||
int nType;
|
||||
int nVersion;
|
||||
|
||||
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
|
||||
|
||||
protected:
|
||||
// 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) {
|
||||
throw std::ios_base::failure(feof(src) ? "CBufferedFile::Fill : end of file" : "CBufferedFile::Fill : fread failed");
|
||||
} else {
|
||||
nSrcPos += read;
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
public:
|
||||
CBufferedFile(FILE *fileIn, uint64_t nBufSize, uint64_t nRewindIn, int nTypeIn, int nVersionIn) :
|
||||
nSrcPos(0), nReadPos(0), nReadLimit((uint64_t)(-1)), nRewind(nRewindIn), vchBuf(nBufSize, 0)
|
||||
{
|
||||
src = fileIn;
|
||||
nType = nTypeIn;
|
||||
nVersion = nVersionIn;
|
||||
}
|
||||
|
||||
~CBufferedFile()
|
||||
{
|
||||
fclose();
|
||||
}
|
||||
|
||||
void fclose()
|
||||
{
|
||||
if (src) {
|
||||
::fclose(src);
|
||||
src = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
// 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;
|
||||
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 // BITCOIN_SERIALIZE_H
|
||||
|
571
src/streams.h
Normal file
571
src/streams.h
Normal file
@ -0,0 +1,571 @@
|
||||
// Copyright (c) 2009-2010 Satoshi Nakamoto
|
||||
// Copyright (c) 2009-2013 The Bitcoin developers
|
||||
// Distributed under the MIT/X11 software license, see the accompanying
|
||||
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
|
||||
|
||||
#ifndef BITCOIN_STREAMS_H
|
||||
#define BITCOIN_STREAMS_H
|
||||
|
||||
#include "allocators.h"
|
||||
#include "serialize.h"
|
||||
|
||||
#include <algorithm>
|
||||
#include <assert.h>
|
||||
#include <ios>
|
||||
#include <limits>
|
||||
#include <map>
|
||||
#include <set>
|
||||
#include <stdint.h>
|
||||
#include <string>
|
||||
#include <string.h>
|
||||
#include <utility>
|
||||
#include <vector>
|
||||
|
||||
/** 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;
|
||||
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;
|
||||
}
|
||||
|
||||
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); }
|
||||
|
||||
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);
|
||||
}
|
||||
|
||||
#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
|
||||
//
|
||||
bool eof() const { return size() == 0; }
|
||||
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, size_t nSize)
|
||||
{
|
||||
// Read from the beginning of the buffer
|
||||
unsigned int nReadPosNext = nReadPos + nSize;
|
||||
if (nReadPosNext >= vch.size())
|
||||
{
|
||||
if (nReadPosNext > vch.size())
|
||||
{
|
||||
throw std::ios_base::failure("CDataStream::read() : end of data");
|
||||
}
|
||||
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())
|
||||
throw std::ios_base::failure("CDataStream::ignore() : end of data");
|
||||
nReadPos = 0;
|
||||
vch.clear();
|
||||
return (*this);
|
||||
}
|
||||
nReadPos = nReadPosNext;
|
||||
return (*this);
|
||||
}
|
||||
|
||||
CDataStream& write(const char* pch, size_t nSize)
|
||||
{
|
||||
// Write to the end of the buffer
|
||||
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) {
|
||||
data.insert(data.end(), begin(), end());
|
||||
clear();
|
||||
}
|
||||
};
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
/** Non-refcounted 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
|
||||
{
|
||||
private:
|
||||
// Disallow copies
|
||||
CAutoFile(const CAutoFile&);
|
||||
CAutoFile& operator=(const CAutoFile&);
|
||||
|
||||
int nType;
|
||||
int nVersion;
|
||||
|
||||
FILE* file;
|
||||
|
||||
public:
|
||||
CAutoFile(FILE* filenew, int nTypeIn, int nVersionIn)
|
||||
{
|
||||
file = filenew;
|
||||
nType = nTypeIn;
|
||||
nVersion = nVersionIn;
|
||||
}
|
||||
|
||||
~CAutoFile()
|
||||
{
|
||||
fclose();
|
||||
}
|
||||
|
||||
void fclose()
|
||||
{
|
||||
if (file) {
|
||||
::fclose(file);
|
||||
file = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
/** Get wrapped FILE* with transfer of ownership.
|
||||
* @note This will invalidate the CAutoFile object, and makes it the responsibility of the caller
|
||||
* of this function to clean up the returned FILE*.
|
||||
*/
|
||||
FILE* release() { FILE* ret = file; file = NULL; return ret; }
|
||||
|
||||
/** Get wrapped FILE* without transfer of ownership.
|
||||
* @note Ownership of the FILE* will remain with this class. Use this only if the scope of the
|
||||
* CAutoFile outlives use of the passed pointer.
|
||||
*/
|
||||
FILE* Get() const { return file; }
|
||||
|
||||
/** Return true if the wrapped FILE* is NULL, false otherwise.
|
||||
*/
|
||||
bool IsNull() const { return (file == NULL); }
|
||||
|
||||
//
|
||||
// Stream subset
|
||||
//
|
||||
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)
|
||||
throw std::ios_base::failure(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)
|
||||
throw std::ios_base::failure("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);
|
||||
}
|
||||
};
|
||||
|
||||
/** Non-refcounted RAII wrapper around a FILE* that implements a ring buffer to
|
||||
* deserialize from. It guarantees the ability to rewind a given number of bytes.
|
||||
*
|
||||
* Will automatically close the file when it goes out of scope if not null.
|
||||
* If you need to close the file early, use file.fclose() instead of fclose(file).
|
||||
*/
|
||||
class CBufferedFile
|
||||
{
|
||||
private:
|
||||
// Disallow copies
|
||||
CBufferedFile(const CBufferedFile&);
|
||||
CBufferedFile& operator=(const CBufferedFile&);
|
||||
|
||||
int nType;
|
||||
int nVersion;
|
||||
|
||||
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
|
||||
|
||||
protected:
|
||||
// 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) {
|
||||
throw std::ios_base::failure(feof(src) ? "CBufferedFile::Fill : end of file" : "CBufferedFile::Fill : fread failed");
|
||||
} else {
|
||||
nSrcPos += read;
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
public:
|
||||
CBufferedFile(FILE *fileIn, uint64_t nBufSize, uint64_t nRewindIn, int nTypeIn, int nVersionIn) :
|
||||
nSrcPos(0), nReadPos(0), nReadLimit((uint64_t)(-1)), nRewind(nRewindIn), vchBuf(nBufSize, 0)
|
||||
{
|
||||
src = fileIn;
|
||||
nType = nTypeIn;
|
||||
nVersion = nVersionIn;
|
||||
}
|
||||
|
||||
~CBufferedFile()
|
||||
{
|
||||
fclose();
|
||||
}
|
||||
|
||||
void fclose()
|
||||
{
|
||||
if (src) {
|
||||
::fclose(src);
|
||||
src = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
// 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;
|
||||
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 // BITCOIN_STREAMS_H
|
@ -10,6 +10,7 @@
|
||||
#include "data/alertTests.raw.h"
|
||||
|
||||
#include "serialize.h"
|
||||
#include "streams.h"
|
||||
#include "util.h"
|
||||
#include "utilstrencodings.h"
|
||||
#include "version.h"
|
||||
|
@ -3,6 +3,7 @@
|
||||
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
|
||||
|
||||
#include "serialize.h"
|
||||
#include "streams.h"
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
|
@ -6,6 +6,7 @@
|
||||
#include "txmempool.h"
|
||||
|
||||
#include "core.h"
|
||||
#include "streams.h"
|
||||
#include "util.h"
|
||||
#include "utilmoneystr.h"
|
||||
#include "version.h"
|
||||
|
@ -12,6 +12,8 @@
|
||||
#include "core.h"
|
||||
#include "sync.h"
|
||||
|
||||
class CAutoFile;
|
||||
|
||||
inline bool AllowFree(double dPriority)
|
||||
{
|
||||
// Large (in bytes) low-priority (new, small-coin) transactions
|
||||
|
Loading…
Reference in New Issue
Block a user