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https://port.numenaute.org/aleajactaest/khanat-opennel-code.git
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487 lines
11 KiB
C++
487 lines
11 KiB
C++
// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
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// Copyright (C) 2010 Winch Gate Property Limited
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#include "stdmisc.h"
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#include "nel/misc/stream.h"
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#include "nel/misc/mem_stream.h"
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using namespace std;
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#ifdef DEBUG_NEW
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#define new DEBUG_NEW
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#endif
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namespace NLMISC
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{
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// ======================================================================================================
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// ======================================================================================================
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// EStream.
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// ======================================================================================================
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// ======================================================================================================
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// ======================================================================================================
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EStream::EStream( const IStream &f ) : Exception( "In Stream: " + f.getStreamName() + string(": Stream Error") )
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{
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StreamName= f.getStreamName();
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}
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EStream::EStream( const IStream &f, const std::string& str )
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: Exception( "In Stream: " + f.getStreamName() + ": " + str )
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{
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StreamName= f.getStreamName();
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}
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EInvalidDataStream::EInvalidDataStream(const char *msg, uint size)
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: EStream( NLMISC::toString( msg, size ) )
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{}
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EStreamOverflow::EStreamOverflow( const char *msg, uint size )
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: EStream( NLMISC::toString( msg, size ) )
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{}
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// ======================================================================================================
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// ======================================================================================================
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// IStream.
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// ======================================================================================================
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// ======================================================================================================
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// ======================================================================================================
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bool IStream::_ThrowOnOlder=false;
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bool IStream::_ThrowOnNewer=true;
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// ======================================================================================================
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void IStream::setVersionException(bool throwOnOlder, bool throwOnNewer)
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{
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_ThrowOnOlder=throwOnOlder;
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_ThrowOnNewer=throwOnNewer;
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}
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// ======================================================================================================
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void IStream::getVersionException(bool &throwOnOlder, bool &throwOnNewer)
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{
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throwOnOlder=_ThrowOnOlder;
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throwOnNewer=_ThrowOnNewer;
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}
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/*
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* Copy constructor
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*/
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IStream::IStream( const IStream& other )
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{
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operator=( other );
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// By default, mode _XML is off
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_XML = false;
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}
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/*
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* Assignment operator
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*/
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IStream& IStream::operator=( const IStream& other )
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{
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_InputStream = other._InputStream;
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resetPtrTable();
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return *this;
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}
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void IStream::swap(IStream &other)
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{
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std::swap(_InputStream, other._InputStream);
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std::swap(_NextSerialPtrId, other._NextSerialPtrId);
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_IdMap.swap(other._IdMap);
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std::swap(_XML, other._XML);
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}
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// ======================================================================================================
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// ======================================================================================================
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// ======================================================================================================
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// ======================================================================================================
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void IStream::serialIStreamable(IStreamable* &ptr)
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{
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uint64 node=0;
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// Open a node
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xmlPushBegin ("POLYPTR");
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if(isReading())
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{
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// First attribute name
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xmlSetAttrib ("id");
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serial(node);
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if(node==0)
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{
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ptr=NULL;
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// Close the node header
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xmlPushEnd ();
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}
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else
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{
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ItIdMap it;
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it= _IdMap.find(node);
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// Test if object already created/read.
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if( it==_IdMap.end() )
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{
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// Read the class name.
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string className;
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// Second attribute name
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xmlSetAttrib ("class");
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serial(className);
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// Close the node header
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xmlPushEnd ();
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// Construct object.
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ptr= dynamic_cast<IStreamable*> (CClassRegistry::create(className));
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if(ptr==NULL)
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#ifdef NL_DEBUG
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throw EUnregisteredClass(className);
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#else
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throw EUnregisteredClass();
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#endif
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#ifdef NL_DEBUG
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nlassert(CClassRegistry::checkObject(ptr));
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#endif
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// Insert the node.
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_IdMap.insert( ValueIdMap(node, ptr) );
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// Read the object!
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ptr->serial(*this);
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}
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else
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{
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ptr= static_cast<IStreamable*>(it->second);
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// Close the node header
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xmlPushEnd ();
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}
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}
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}
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else
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{
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if(ptr==NULL)
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{
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node= 0;
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// First attribute name
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xmlSetAttrib ("id");
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serial(node);
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// Close the node header
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xmlPushEnd ();
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}
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else
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{
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// Assume that prt size is an int size
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//#ifdef NL_DEBUG
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// nlassert(sizeof(uint) == sizeof(void *));
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//#endif
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ItIdMap it;
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it = _IdMap.find((uint64)/*(uint)*/ptr);
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// Test if object has been already written
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if( it==_IdMap.end() )
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{
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// Not yet written
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// Get the next available ID
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node = _NextSerialPtrId++;
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// Serial the id
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xmlSetAttrib ("id");
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serial(node);
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// Insert the pointer in the map with the id
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_IdMap.insert( ValueIdMap((uint64)/*(uint)*/ptr, (void*)/*(uint)*/node) );
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#ifdef NL_DEBUG
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nlassert(CClassRegistry::checkObject(ptr));
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#endif
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// Write the class name.
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string className=ptr->getClassName();
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// Second attribute name
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xmlSetAttrib ("class");
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serial(className);
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// Close the node header
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xmlPushEnd ();
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// Write the object!
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ptr->serial(*this);
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}
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else
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{
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// Write only the object id
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xmlSetAttrib ("id");
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node = (uint64)/*(uint)*/(it->second);
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serial(node);
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xmlPushEnd ();
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}
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}
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}
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// Close the node
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xmlPop ();
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}
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// ======================================================================================================
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void IStream::resetPtrTable()
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{
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_IdMap.clear();
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_NextSerialPtrId = 1; // Start at 1 because 0 is the NULL pointer
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}
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// ======================================================================================================
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// ======================================================================================================
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// ======================================================================================================
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// ======================================================================================================
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uint IStream::serialVersion(uint currentVersion)
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{
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uint8 b=0;
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uint32 v=0;
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uint streamVersion;
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// Open the node
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xmlPush ("VERSION");
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if(isReading())
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{
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serial(b);
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if(b==0xFF)
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serial(v);
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else
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v=b;
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streamVersion=v;
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// Exception test.
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if(_ThrowOnOlder && streamVersion < currentVersion)
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throw EOlderStream(*this);
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if(_ThrowOnNewer && streamVersion > currentVersion)
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throw ENewerStream(*this);
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}
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else
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{
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v= streamVersion=currentVersion;
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if(v>=0xFF)
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{
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b=0xFF;
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serial(b);
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serial(v);
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}
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else
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{
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b= (uint8)v;
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serial(b);
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}
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}
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// Close the node
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xmlPop ();
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return streamVersion;
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}
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// ======================================================================================================
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// ======================================================================================================
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// ======================================================================================================
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// ======================================================================================================
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void IStream::serialCont(vector<uint8> &cont)
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{
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sint32 len=0;
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if(isReading())
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{
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serial(len);
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// check stream holds enough bytes (avoid STL to crash on resize)
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checkStreamSize(len);
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// one block serial
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cont.resize(len);
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if (len != 0)
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serialBuffer( (uint8*)&(*cont.begin()) , len);
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}
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else
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{
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len= (sint32)cont.size();
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serial(len);
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if (len != 0)
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serialBuffer( (uint8*)&(*cont.begin()) , len);
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}
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}
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// ======================================================================================================
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void IStream::serialCont(vector<sint8> &cont)
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{
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sint32 len=0;
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if(isReading())
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{
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serial(len);
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// check stream holds enough bytes (avoid STL to crash on resize)
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checkStreamSize(len);
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// one block serial
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cont.resize(len);
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if (len != 0)
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serialBuffer( (uint8*)&(*cont.begin()) , len);
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}
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else
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{
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len= (sint32)cont.size();
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serial(len);
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if (len != 0)
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serialBuffer( (uint8*)&(*cont.begin()) , len);
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}
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}
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// ======================================================================================================
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void IStream::serialCont(vector<bool> &cont)
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{
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sint32 len=0;
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vector<uint8> vec;
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if(isReading())
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{
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serial(len);
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// check stream holds enough bytes (avoid STL to crash on resize)
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checkStreamSize(len/8);
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// One Block Serial
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cont.resize(len);
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if (len != 0)
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{
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// read as uint8*.
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sint lb= (len+7)/8;
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vec.resize(lb);
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serialBuffer( (uint8*)&(*vec.begin()) , lb);
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for(sint i=0;i<len;i++)
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{
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uint bit= (vec[i>>3]>>(i&7)) & 1;
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cont[i]= bit?true:false;
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}
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}
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}
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else
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{
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len= (sint32)cont.size();
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serial(len);
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if (len != 0)
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{
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// write as uint8*.
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sint lb= (len+7)/8;
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vec.resize(lb);
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fill_n(vec.begin(), lb, 0);
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for(sint i=0;i<len;i++)
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{
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uint bit= cont[i]?1:0;
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vec[i>>3]|= bit<<(i&7);
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}
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serialBuffer( (uint8*)&(*vec.begin()) , lb);
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}
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}
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}
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// ======================================================================================================
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bool IStream::seek (sint32 offset, TSeekOrigin origin) const
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{
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throw ESeekNotSupported(*this);
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}
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// ======================================================================================================
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sint32 IStream::getPos () const
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{
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throw ESeekNotSupported(*this);
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}
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// ======================================================================================================
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void IStream::setInOut(bool inputStream)
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{
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_InputStream= inputStream;
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}
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// ======================================================================================================
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string IStream::getStreamName() const
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{
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return "";
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}
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// ======================================================================================================
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void IStream::setXMLMode (bool on)
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{
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_XML = on;
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}
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/*
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* Serial memstream, bitmemstream...
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*/
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void IStream::serialMemStream( CMemStream &b )
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{
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uint32 len=0;
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// Serialize length
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if ( isReading() )
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{
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// fill b with data from this
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serial (len);
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serialBuffer (b.bufferToFill (len), len);
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b.resetBufPos ();
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}
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else
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{
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// fill this with data from b
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len = b.length();
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serial( len );
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serialBuffer( (uint8*) b.buffer (), len );
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}
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}
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}
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