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251 lines
6.6 KiB
C++
251 lines
6.6 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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#ifndef NL_I_XML_H
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#define NL_I_XML_H
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//#define NL_DONT_USE_EXTERNAL_CODE
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#undef NL_DONT_USE_EXTERNAL_CODE
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#ifndef NL_DONT_USE_EXTERNAL_CODE
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#include "types_nl.h"
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#include "stream.h"
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// Forward declarations for libxml2
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typedef struct _xmlNode xmlNode;
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typedef xmlNode *xmlNodePtr;
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typedef struct _xmlParserCtxt xmlParserCtxt;
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typedef xmlParserCtxt *xmlParserCtxtPtr;
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namespace NLMISC {
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struct EXmlParsingError : public EStream
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{
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EXmlParsingError ( const std::string& str ) : EStream( str ) {}
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};
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/**
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* Input xml stream
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*
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* This class is an xml formated input stream.
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*
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* This stream use an internal stream to input source xml code.
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* Use setStream to initialise it.
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\code
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// Check exceptions
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try
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{
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// File stream
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CIFile file;
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// open the file
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if (file.open ("input.xml"))
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{
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// XMl stream
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CIXml input;
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// Init, read all the input file...
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if (input.init (file))
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{
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// Serial the class
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myClass.serial (input);
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}
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// Close the file
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file.close ();
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}
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else
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{
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// File not found
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}
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}
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catch (const Exception &e)
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{
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// Something wrong appends
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}
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\endcode
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* \author Cyril 'Hulud' Corvazier
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* \author Nevrax France
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* \date 2001
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*/
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class CIXml : public IStream
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{
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friend void xmlGenericErrorFuncRead (void *ctx, const char *msg, ...);
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public:
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/** Default ctor
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*/
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CIXml ();
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// If tryBinaryMode is true, try to open the stream in both, XML and Binary if XML doesn't work.
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// In tryBinaryMode, the stream keep a pointer on the input stream passed to init();
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CIXml (bool tryBinaryMode);
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/** Dtor. Call release().
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*/
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virtual ~CIXml ();
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/** Stream initialisation. The stream must be an input stream.
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* init() will load the XML tree. So init() can raise read error exceptions.
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*
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* \param stream is the stream the class will use to input xml code.
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* this pointer is not held by the class. This stream must support end seek functions (as files).
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* \return true if init success, false if stream is not an input stream.
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*/
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bool init (IStream &stream);
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/** Release the resources used by the stream.
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*/
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void release ();
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/** Get the root node pointer
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*/
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xmlNodePtr getRootNode () const;
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/** Get the first child node pointer named childName. NULL if no node named childName.
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*/
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static xmlNodePtr getFirstChildNode (xmlNodePtr parent, const char *childName);
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/** Get the next child node pointer name childName, brother of previous. NULL if no node named childName.
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*/
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static xmlNodePtr getNextChildNode (xmlNodePtr last, const char *childName);
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/** Get the first child node pointer of type. NULL if no node of type.
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*/
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static xmlNodePtr getFirstChildNode (xmlNodePtr parent, sint /* xmlElementType */ type);
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/** Get the next child node pointer of type. NULL if no node of type.
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*/
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static xmlNodePtr getNextChildNode (xmlNodePtr last, sint /* xmlElementType */ type);
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/** Count number of sub node named with a given name for a given node.
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*/
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static uint countChildren (xmlNodePtr node, const char *childName);
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/** Count number of sub node of type for a given node.
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*/
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static uint countChildren (xmlNodePtr node, sint /* xmlElementType */ type);
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/**
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* Read a property string
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*
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* Returns true and the result if the property has been found, else false.
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*/
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static bool getPropertyString (std::string &result, xmlNodePtr node, const char *property);
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/**
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* Read an integer property - if the property is not found the default value is returned
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*/
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static int getIntProperty(xmlNodePtr node, const char *property, int defaultValue);
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/**
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* Read a floating point property - if the property is not found the default value is returned
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*/
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static double getFloatProperty(xmlNodePtr node, const char *property, float defaultValue);
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/**
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* Read a string property - if the property is not found the default value is returned
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*/
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static std::string getStringProperty(xmlNodePtr node, const char *property, const std::string& defaultValue);
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/**
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* Read the content of the node as a string
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*
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* Returns true and the result if some text has been found, else false.
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*/
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static bool getContentString (std::string &result, xmlNodePtr node);
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private:
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/// From IStream
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virtual void serial(uint8 &b);
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virtual void serial(sint8 &b);
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virtual void serial(uint16 &b);
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virtual void serial(sint16 &b);
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virtual void serial(uint32 &b);
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virtual void serial(sint32 &b);
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virtual void serial(uint64 &b);
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virtual void serial(sint64 &b);
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virtual void serial(float &b);
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virtual void serial(double &b);
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virtual void serial(bool &b);
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#ifndef NL_OS_CYGWIN
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virtual void serial(char &b);
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#endif
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virtual void serial(std::string &b);
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virtual void serial(ucstring &b);
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virtual void serialBuffer(uint8 *buf, uint len);
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virtual void serialBit(bool &bit);
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virtual bool xmlPushBeginInternal (const char *nodeName);
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virtual bool xmlPushEndInternal ();
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virtual bool xmlPopInternal ();
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virtual bool xmlSetAttribInternal (const char *attribName);
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virtual bool xmlBreakLineInternal ();
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virtual bool xmlCommentInternal (const char *comment);
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// Internal functions
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void serialSeparatedBufferIn ( std::string &value, bool checkSeparator = true );
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inline void flushContentString ();
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// Push has began
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bool _PushBegin;
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// Attribute present
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bool _AttribPresent;
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// Attribute name
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std::string _AttribName;
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// Current libxml node
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xmlNodePtr _CurrentNode;
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// Current libxml header node opened
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xmlNodePtr _CurrentElement;
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// Parser pointer
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xmlParserCtxtPtr _Parser;
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// Current node text
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std::string _ContentString;
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// Current index in the node string
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uint _ContentStringIndex;
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// Error message
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std::string _ErrorString;
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// Try binary mode
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bool _TryBinaryMode;
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// If not NULL, binary mode detected, use this stream in serials
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IStream *_BinaryStream;
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// System dependant structure for locale
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void* _Locale;
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};
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} // NLMISC
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#endif // NL_DONT_USE_EXTERNAL_CODE
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#endif // NL_I_XML_H
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/* End of o_xml.h */
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