From 48cec90c3f1e81daec3d216ddf4db1ea1e2a8341 Mon Sep 17 00:00:00 2001
From: madmaxoft <madmaxoft@0a769ca7-a7f5-676a-18bf-c427514a06d6>
Date: Tue, 9 Apr 2013 13:43:24 +0000
Subject: Added Expat and LuaExpat, XML parsing now available in the API.

FS #336
Windows version only, Linux to be fixed soon.

git-svn-id: http://mc-server.googlecode.com/svn/trunk@1374 0a769ca7-a7f5-676a-18bf-c427514a06d6
---
 source/XMLParser.h | 701 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 701 insertions(+)
 create mode 100644 source/XMLParser.h

(limited to 'source/XMLParser.h')

diff --git a/source/XMLParser.h b/source/XMLParser.h
new file mode 100644
index 000000000..a6b571862
--- /dev/null
+++ b/source/XMLParser.h
@@ -0,0 +1,701 @@
+
+// XMLParser.h
+
+// Interfaces to the CXMLParser class representing the base class for XML parsing
+
+// To use, derive a class from this base and override its OnStartElement(), OnEndElement() and OnCharacters() functions
+
+
+
+
+
+#pragma once
+
+#include "expat/expat.h"
+
+
+
+
+
+class CXMLParser
+{
+public:
+	CXMLParser(void);
+	virtual ~CXMLParser();
+	
+	// The actual parsing, may be called several times; the last time needs iIsFinal == true (-> flush)
+	int Parse(const char * iData, size_t iLength, bool iIsFinal = false);
+
+private:
+	// LibExpat stuff:
+	XML_Parser mParser;
+	
+	static void StartElementHandler(void * iContext, const XML_Char * iElement, const XML_Char ** iAttributes)
+	{
+		((CXMLParser *)iContext)->OnStartElement(iElement, iAttributes);
+	}
+	
+	static void EndElementHandler  (void * iContext, const XML_Char * iElement)
+	{
+		((CXMLParser *)iContext)->OnEndElement(iElement);
+	}
+	
+	static void CharacterDataHandler (void * iContext, const XML_Char * iData, int iLength)
+	{
+		((CXMLParser *)iContext)->OnCharacters(iData, iLength);
+	}
+	
+protected:
+	virtual void OnStartElement(const XML_Char * iElement, const XML_Char ** iAttributes) = 0;
+	virtual void OnEndElement  (const XML_Char * iElement) = 0;
+	virtual void OnCharacters  (const XML_Char * iCharacters, int iLength) = 0;
+} ;
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// The following template has been modified from code available at
+// http://www.codeproject.com/Articles/1847/C-Wrappers-for-the-Expat-XML-Parser
+// It uses templates to remove the virtual function call penalty (both size and speed) for each callback
+
+/* Usage:
+1, Declare a subclass: 
+	class CMyParser : public CExpatImpl<CMyParser>
+2, Declare handlers that you want in that subclass:
+	void CMyParser::OnEndElement(const XML_Char * iTagName);
+3, Create an instance of your class:
+	CMyParser Parser;
+4, Call Create():
+	Parser.Create(NULL, NULL);
+4, Call Parse(), repeatedly:
+	Parser.Parse(Buffer, Length);
+*/
+
+template <class _T>
+class CExpatImpl
+{
+
+// @access Constructors and destructors
+public:
+	
+	// @cmember General constructor
+
+	CExpatImpl ()
+	{
+		m_p = NULL;
+	}
+
+	// @cmember Destructor
+
+	~CExpatImpl ()
+	{
+		Destroy ();
+	}
+
+// @access Parser creation and deletion methods
+public:
+
+	// @cmember Create a parser
+
+	bool Create (const XML_Char * pszEncoding = NULL, const XML_Char * pszSep = NULL)
+	{
+		// Destroy the old parser
+		Destroy ();
+
+		// If the encoding or seperator are empty, then NULL
+		if (pszEncoding != NULL && pszEncoding [0] == 0)
+		{
+			pszEncoding = NULL;
+		}
+		if (pszSep != NULL && pszSep [0] == 0)
+		{
+			pszSep = NULL;
+		}
+
+		// Create the new parser
+		m_p = XML_ParserCreate_MM (pszEncoding, NULL, pszSep);
+		if (m_p == NULL)
+		{
+			return false;
+		}
+
+		// Invoke the post create routine
+		_T * pThis = static_cast <_T *> (this);
+		pThis ->OnPostCreate ();
+
+		// Set the user data used in callbacks
+		XML_SetUserData (m_p, (void *) this);
+		return true;
+	}
+
+	// @cmember Destroy the parser
+
+	void Destroy (void)
+	{
+		if (m_p != NULL)
+		{
+			XML_ParserFree (m_p);
+		}
+		m_p = NULL;
+	}
+
+
+	// @cmember Parse a block of data
+
+	bool Parse (const char *pszBuffer, int nLength, bool fIsFinal = true)
+	{
+		assert (m_p != NULL);
+		return XML_Parse (m_p, pszBuffer, nLength, fIsFinal) != 0;
+	}
+
+	// @cmember Parse internal buffer
+
+	bool ParseBuffer (int nLength, bool fIsFinal = true)
+	{
+		assert (m_p != NULL);
+		return XML_ParseBuffer (m_p, nLength, fIsFinal) != 0;
+	}
+
+	// @cmember Get the internal buffer
+
+	void *GetBuffer (int nLength)
+	{
+		assert (m_p != NULL);
+		return XML_GetBuffer (m_p, nLength);
+	}
+
+
+protected:
+	// Parser callback enable/disable methods:
+
+	// @cmember Enable/Disable the start element handler
+
+	void EnableStartElementHandler (bool fEnable = true)
+	{
+		assert (m_p != NULL);
+		XML_SetStartElementHandler (m_p, fEnable ? StartElementHandler : NULL);
+	}
+
+	// @cmember Enable/Disable the end element handler
+
+	void EnableEndElementHandler (bool fEnable = true)
+	{
+		assert (m_p != NULL);
+		XML_SetEndElementHandler (m_p, fEnable ? EndElementHandler : NULL);
+	}
+
+	// @cmember Enable/Disable the element handlers
+
+	void EnableElementHandler (bool fEnable = true)
+	{
+		assert (m_p != NULL);
+		EnableStartElementHandler (fEnable);
+		EnableEndElementHandler (fEnable);
+	}
+
+	// @cmember Enable/Disable the character data handler
+
+	void EnableCharacterDataHandler (bool fEnable = true)
+	{
+		assert (m_p != NULL);
+		XML_SetCharacterDataHandler (m_p, fEnable ? CharacterDataHandler : NULL);
+	}
+
+	// @cmember Enable/Disable the processing instruction handler
+
+	void EnableProcessingInstructionHandler (bool fEnable = true)
+	{
+		assert (m_p != NULL);
+		XML_SetProcessingInstructionHandler (m_p, fEnable ? ProcessingInstructionHandler : NULL);
+	}
+
+	// @cmember Enable/Disable the comment handler
+
+	void EnableCommentHandler (bool fEnable = true)
+	{
+		assert (m_p != NULL);
+		XML_SetCommentHandler (m_p, fEnable ? CommentHandler : NULL);
+	}
+
+	// @cmember Enable/Disable the start CDATA section handler
+
+	void EnableStartCdataSectionHandler (bool fEnable = true)
+	{
+		assert (m_p != NULL);
+		XML_SetStartCdataSectionHandler (m_p, fEnable ? StartCdataSectionHandler : NULL);
+	}
+
+	// @cmember Enable/Disable the end CDATA section handler
+
+	void EnableEndCdataSectionHandler (bool fEnable = true)
+	{
+		assert (m_p != NULL);
+		XML_SetEndCdataSectionHandler (m_p, fEnable ? EndCdataSectionHandler : NULL);
+	}
+
+	// @cmember Enable/Disable the CDATA section handlers
+
+	void EnableCdataSectionHandler (bool fEnable = true)
+	{
+		assert (m_p != NULL);
+		EnableStartCdataSectionHandler (fEnable);
+		EnableEndCdataSectionHandler (fEnable);
+	}
+
+	// @cmember Enable/Disable default handler
+	
+	void EnableDefaultHandler (bool fEnable = true, bool fExpand = true)
+	{
+		assert (m_p != NULL);
+		if (fExpand)
+		{
+			XML_SetDefaultHandlerExpand (m_p, fEnable ? DefaultHandler : NULL);
+		}
+		else
+			XML_SetDefaultHandler (m_p, fEnable ? DefaultHandler : NULL);
+	}
+	
+	// @cmember Enable/Disable external entity ref handler
+	
+	void EnableExternalEntityRefHandler (bool fEnable = true)
+	{
+		assert (m_p != NULL);
+		XML_SetExternalEntityRefHandler (m_p, fEnable ? ExternalEntityRefHandler : NULL);
+	}
+	
+	// @cmember Enable/Disable unknown encoding handler
+	
+	void EnableUnknownEncodingHandler (bool fEnable = true)
+	{
+		assert (m_p != NULL);
+		XML_SetUnknownEncodingHandler (m_p, fEnable ? UnknownEncodingHandler : NULL);
+	}
+	
+	// @cmember Enable/Disable start namespace handler
+	
+	void EnableStartNamespaceDeclHandler (bool fEnable = true)
+	{
+		assert (m_p != NULL);
+		XML_SetStartNamespaceDeclHandler (m_p, fEnable ? StartNamespaceDeclHandler : NULL);
+	}
+	
+	// @cmember Enable/Disable end namespace handler
+	
+	void EnableEndNamespaceDeclHandler (bool fEnable = true)
+	{
+		assert (m_p != NULL);
+		XML_SetEndNamespaceDeclHandler (m_p, fEnable ? EndNamespaceDeclHandler : NULL);
+	}
+
+	// @cmember Enable/Disable namespace handlers
+
+	void EnableNamespaceDeclHandler (bool fEnable = true)
+	{
+		EnableStartNamespaceDeclHandler (fEnable);
+		EnableEndNamespaceDeclHandler (fEnable);
+	}
+	
+	// @cmember Enable/Disable the XML declaration handler
+
+	void EnableXmlDeclHandler (bool fEnable = true)
+	{
+		assert (m_p != NULL);
+		XML_SetXmlDeclHandler (m_p, fEnable ? XmlDeclHandler : NULL);
+	}
+
+	// @cmember Enable/Disable the start DOCTYPE declaration handler
+
+	void EnableStartDoctypeDeclHandler (bool fEnable = true)
+	{
+		assert (m_p != NULL);
+		XML_SetStartDoctypeDeclHandler (m_p, fEnable ? StartDoctypeDeclHandler : NULL);
+	}
+
+	// @cmember Enable/Disable the end DOCTYPE declaration handler
+
+	void EnableEndDoctypeDeclHandler (bool fEnable = true)
+	{
+		assert (m_p != NULL);
+		XML_SetEndDoctypeDeclHandler (m_p, 
+			fEnable ? EndDoctypeDeclHandler : NULL);
+	}
+
+	// @cmember Enable/Disable the DOCTYPE declaration handler
+
+	void EnableDoctypeDeclHandler (bool fEnable = true)
+	{
+		assert (m_p != NULL);
+		EnableStartDoctypeDeclHandler (fEnable);
+		EnableEndDoctypeDeclHandler (fEnable);
+	}
+
+public:
+	// Parser error reporting methods
+
+	// @cmember Get last error
+
+	enum XML_Error GetErrorCode () 
+	{
+		assert (m_p != NULL);
+		return XML_GetErrorCode (m_p);
+	}
+
+	// @cmember Get the current byte index
+
+	long GetCurrentByteIndex () 
+	{
+		assert (m_p != NULL);
+		return XML_GetCurrentByteIndex (m_p);
+	}
+
+	// @cmember Get the current line number
+
+	int GetCurrentLineNumber () 
+	{
+		assert (m_p != NULL);
+		return XML_GetCurrentLineNumber (m_p);
+	}
+
+	// @cmember Get the current column number
+
+	int GetCurrentColumnNumber () 
+	{
+		assert (m_p != NULL);
+		return XML_GetCurrentColumnNumber (m_p);
+	}
+
+	// @cmember Get the current byte count
+
+	int GetCurrentByteCount () 
+	{
+		assert (m_p != NULL);
+		return XML_GetCurrentByteCount (m_p);
+	}
+
+	// @cmember Get the input context
+
+	const char *GetInputContext (int *pnOffset, int *pnSize)
+	{
+		assert (m_p != NULL);
+		return XML_GetInputContext (m_p, pnOffset, pnSize);
+	}
+
+	// @cmember Get last error string
+
+	const XML_LChar *GetErrorString () 
+	{
+		return XML_ErrorString (GetErrorCode ());
+	}
+
+	// @cmember Return the version string
+
+	static const XML_LChar *GetExpatVersion ()
+	{
+		return XML_ExpatVersion ();
+	}
+
+	// @cmember Get the version information
+
+	static void GetExpatVersion (int *pnMajor, int *pnMinor, int *pnMicro)
+	{
+		XML_expat_version v = XML_ExpatVersionInfo ();
+		if (pnMajor)
+			*pnMajor = v .major;
+		if (pnMinor)
+			*pnMinor = v .minor;
+		if (pnMicro)
+			*pnMicro = v .micro;
+	}
+
+	// @cmember Get last error string
+
+	static const XML_LChar *GetErrorString (enum XML_Error nError) 
+	{
+		return XML_ErrorString (nError);
+	}
+
+
+	// Public handler methods:
+	// The template parameter should provide their own implementation for those handlers that they want
+
+	// @cmember Start element handler
+
+	void OnStartElement (const XML_Char *pszName, const XML_Char **papszAttrs)
+	{
+		return;
+	}
+
+	// @cmember End element handler
+
+	void OnEndElement (const XML_Char *pszName)
+	{
+		return;
+	}
+
+	// @cmember Character data handler
+
+	void OnCharacterData (const XML_Char *pszData, int nLength)
+	{
+		return;
+	}
+
+	// @cmember Processing instruction handler
+
+	void OnProcessingInstruction (const XML_Char *pszTarget, 
+		const XML_Char *pszData)
+	{
+		return;
+	}
+
+	// @cmember Comment handler
+
+	void OnComment (const XML_Char *pszData)
+	{
+		return;
+	}
+
+	// @cmember Start CDATA section handler
+
+	void OnStartCdataSection ()
+	{
+		return;
+	}
+
+	// @cmember End CDATA section handler
+
+	void OnEndCdataSection ()
+	{
+		return;
+	}
+
+	// @cmember Default handler
+	
+	void OnDefault (const XML_Char *pszData, int nLength)
+	{
+		return;
+	}
+	
+	// @cmember External entity ref handler
+	
+	bool OnExternalEntityRef (const XML_Char *pszContext,
+		const XML_Char *pszBase, const XML_Char *pszSystemID,
+		const XML_Char *pszPublicID)
+	{
+		return false;
+	}
+	
+	// @cmember Unknown encoding handler
+	
+	bool OnUnknownEncoding (const XML_Char *pszName, XML_Encoding *pInfo)
+	{
+		return false;
+	}
+	
+	// @cmember Start namespace declaration handler
+	
+	void OnStartNamespaceDecl (const XML_Char *pszPrefix, 
+		const XML_Char *pszURI)
+	{
+		return;
+	}
+	
+	// @cmember End namespace declaration handler
+	
+	void OnEndNamespaceDecl (const XML_Char *pszPrefix)
+	{
+		return;
+	}
+	
+	// @cmember XML declaration handler
+
+	void OnXmlDecl (const XML_Char *pszVersion, const XML_Char *pszEncoding,
+		bool fStandalone)
+	{
+		return;
+	}
+
+	// @cmember Start DOCTYPE declaration handler
+
+	void OnStartDoctypeDecl (const XML_Char *pszDoctypeName, 
+		const XML_Char *pszSysID, const XML_Char *pszPubID,
+		bool fHasInternalSubset)
+	{
+		return;
+	}
+
+	// @cmember End DOCTYPE declaration handler
+
+	void OnEndDoctypeDecl ()
+	{
+		return;
+	}
+
+// @access Protected methods
+protected:
+
+	// @cmember Handle any post creation
+
+	void OnPostCreate ()
+	{
+	}
+
+// @access Protected static methods
+protected:
+
+	// @cmember Start element handler wrapper
+
+	static void __cdecl StartElementHandler (void *pUserData,
+		const XML_Char *pszName, const XML_Char **papszAttrs)
+	{
+		_T *pThis = static_cast <_T *> ((CExpatImpl <_T> *) pUserData);
+		pThis ->OnStartElement (pszName, papszAttrs);
+	}
+
+	// @cmember End element handler wrapper
+
+	static void __cdecl EndElementHandler (void *pUserData,
+		const XML_Char *pszName)
+	{
+		_T *pThis = static_cast <_T *> ((CExpatImpl <_T> *) pUserData);
+		pThis ->OnEndElement (pszName);
+	}
+
+	// @cmember Character data handler wrapper
+
+	static void __cdecl CharacterDataHandler (void *pUserData,
+		const XML_Char *pszData, int nLength)
+	{
+		_T *pThis = static_cast <_T *> ((CExpatImpl <_T> *) pUserData);
+		pThis ->OnCharacterData (pszData, nLength);
+	}
+
+	// @cmember Processing instruction handler wrapper
+
+	static void __cdecl ProcessingInstructionHandler (void *pUserData,
+		const XML_Char *pszTarget, const XML_Char *pszData)
+	{
+		_T *pThis = static_cast <_T *> ((CExpatImpl <_T> *) pUserData);
+		pThis ->OnProcessingInstruction (pszTarget, pszData);
+	}
+
+	// @cmember Comment handler wrapper
+
+	static void __cdecl CommentHandler (void *pUserData,
+		const XML_Char *pszData)
+	{
+		_T *pThis = static_cast <_T *> ((CExpatImpl <_T> *) pUserData);
+		pThis ->OnComment (pszData);
+	}
+
+	// @cmember Start CDATA section wrapper
+
+	static void __cdecl StartCdataSectionHandler (void *pUserData)
+	{
+		_T *pThis = static_cast <_T *> ((CExpatImpl <_T> *) pUserData);
+		pThis ->OnStartCdataSection ();
+	}
+
+	// @cmember End CDATA section wrapper
+
+	static void __cdecl EndCdataSectionHandler (void *pUserData)
+	{
+		_T *pThis = static_cast <_T *> ((CExpatImpl <_T> *) pUserData);
+		pThis ->OnEndCdataSection ();
+	}
+
+	// @cmember Default wrapper
+	
+	static void __cdecl DefaultHandler (void *pUserData, 
+		const XML_Char *pszData, int nLength)
+	{
+		_T *pThis = static_cast <_T *> ((CExpatImpl <_T> *) pUserData);
+		pThis ->OnDefault (pszData, nLength);
+	}
+	
+	// @cmember External entity ref wrapper
+	
+	static int __cdecl ExternalEntityRefHandler (void *pUserData, 
+		const XML_Char *pszContext, const XML_Char *pszBase, 
+		const XML_Char *pszSystemID, const XML_Char *pszPublicID)
+	{
+		_T *pThis = static_cast <_T *> ((CExpatImpl <_T> *) pUserData);
+		return pThis ->OnExternalEntityRef (pszContext, 
+			pszBase, pszSystemID, pszPublicID) ? 1 : 0;
+	}
+	
+	// @cmember Unknown encoding wrapper
+	
+	static int __cdecl UnknownEncodingHandler (void * pUserData, const XML_Char * pszName, XML_Encoding * pInfo)
+	{
+		_T *pThis = static_cast <_T *> ((CExpatImpl <_T> *) pUserData);
+		return pThis ->OnUnknownEncoding (pszName, pInfo) ? 1 : 0;
+	}
+	
+	// @cmember Start namespace decl wrapper
+	
+	static void __cdecl StartNamespaceDeclHandler (void * pUserData, const XML_Char * pszPrefix, const XML_Char * pszURI)
+	{
+		_T *pThis = static_cast <_T *> ((CExpatImpl <_T> *) pUserData);
+		pThis ->OnStartNamespaceDecl (pszPrefix, pszURI);
+	}
+	
+	// @cmember End namespace decl wrapper
+	
+	static void __cdecl EndNamespaceDeclHandler (void * pUserData, const XML_Char * pszPrefix)
+	{
+		_T *pThis = static_cast <_T *> ((CExpatImpl <_T> *) pUserData);
+		pThis ->OnEndNamespaceDecl (pszPrefix);
+	}
+	
+	// @cmember XML declaration wrapper
+
+	static void __cdecl XmlDeclHandler (void *pUserData, const XML_Char *pszVersion, const XML_Char *pszEncoding, int nStandalone)
+	{
+		_T *pThis = static_cast <_T *> ((CExpatImpl <_T> *) pUserData);
+		pThis ->OnXmlDecl (pszVersion, pszEncoding, nStandalone != 0);
+	}
+
+	// @cmember Start Doctype declaration wrapper
+
+	static void __cdecl StartDoctypeDeclHandler (
+		void *pUserData, const XML_Char *pszDoctypeName, const XML_Char *pszSysID, 
+		const XML_Char *pszPubID, int nHasInternalSubset
+	)
+	{
+		_T *pThis = static_cast <_T *> ((CExpatImpl <_T> *) pUserData);
+		pThis ->OnStartDoctypeDecl (pszDoctypeName, pszSysID, 
+			pszPubID, nHasInternalSubset != 0);
+	}
+
+	// @cmember End Doctype declaration wrapper
+
+	static void __cdecl EndDoctypeDeclHandler (void *pUserData)
+	{
+		_T *pThis = static_cast <_T *> ((CExpatImpl <_T> *) pUserData);
+		pThis ->OnEndDoctypeDecl ();
+	}
+	
+	
+protected:
+
+	XML_Parser m_p;
+	
+	/// Returns the value of the specified attribute, if found; NULL otherwise
+	static const XML_Char * FindAttr(const XML_Char ** iAttrs, const XML_Char * iAttrToFind)
+	{
+		for (const XML_Char ** Attr = iAttrs; *Attr != NULL; Attr += 2)
+		{
+			if (strcmp(*Attr, iAttrToFind) == 0)
+			{
+				return *(Attr + 1);
+			}
+		}  // for Attr - iAttrs[]
+		return NULL;
+	}
+} ;
+
+
+
+
-- 
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