www.pudn.com > manypeopleallchat.rar > XMLCommand.h

// XMLCommand.h: interface for the CXMLCommand class. 
// 
////////////////////////////////////////////////////////////////////// 
 
#if !defined(AFX_XMLCOMMAND_H__468D863E_C56E_435B_9D2D_57CE71FC5037__INCLUDED_) 
#define AFX_XMLCOMMAND_H__468D863E_C56E_435B_9D2D_57CE71FC5037__INCLUDED_ 
 
#if _MSC_VER > 1000 
#pragma once 
#endif // _MSC_VER > 1000 
 
#import  named_guids  
using namespace MSXML; 
 
#include "user.h" 
#include "buffer.h" 
 
//element 
#define USERLOGIN		"USERLOGIN" 
#define USERLOGOUT		"USERLOGOUT" 
#define NEWUSER			"NEWUSER" 
#define USERSPEAK		"USERSPEAK" 
#define USERMESSAGE		"USERMESSAGE" 
#define LOGINSUCCESS	"LOGINSUCCESS" 
#define USERS			"USERS" 
#define USER			"USER" 
 
#define REQUESTSF		"REQUESTSF" 
#define OK				"OK" 
#define NO				"NO" 
//attribute 
#define NAME			"NAME" 
#define ID				"ID" 
#define IP				"IP" 
#define PORT			"PORT" 
#define FPORT			"FPORT" 
 
//net packet 
#define NET				"NET" 
#define TAGNET1			"<"NET">" 
#define TAGNET2			"" 
 
template 
class CXMLCommand   
{ 
protected: 
	Type*	m_pType; 
	 
protected: 
	//构建XML格式 
	CString CreateNetPacket(IXMLDOMDocumentPtr docPtr); 
	//根据tag,产生用户信息 
	IXMLDOMDocumentPtr CreateUserInfoTag(_bstr_t &tag, USERINFO &user, BOOL bIP = FALSE); 
	//从节点中获得用户数据,节点包括userinfo的属性:ID和NAME属性 
	BOOL GetUserInfoFromNode(IXMLDOMNodePtr nodePtr, USERINFO &user, BOOL bIP = FALSE); 
	 
public: 
	CXMLCommand(){}; 
	virtual ~CXMLCommand(){}; 
	void SetType(Type* pType){m_pType = pType;}; 
	 
	//从缓冲区中读取,是否存在完整的xml指令,即取出... 
	BOOL HasNetPacket(CBuffer &buffer, CString &strXML); 
	//获得输入指令 
	CString GetCommand(){return CString((char*)m_out);} 
	//处理信息,由子类重写 
	virtual BOOL DoProcessNetPacket(LONG userID, CString &strXML) = 0;	 
	 
}; 
 
// 
template 
IXMLDOMDocumentPtr CXMLCommand::CreateUserInfoTag(_bstr_t &tag, USERINFO &user, BOOL bIP) 
{ 
	IXMLDOMDocumentPtr docPtr; 
	IXMLDOMElementPtr elementPtr;	 
	 
	//生成文档	 
	docPtr.CreateInstance(MSXML::CLSID_DOMDocument); 
	 
	//根据tag生成根元素 
	elementPtr = docPtr->createElement(tag); 
	docPtr->documentElement = elementPtr; 
	 
	//设置用户属性 
	elementPtr->setAttribute(_bstr_t(ID), _variant_t(user.m_id)); 
	elementPtr->setAttribute(_bstr_t(NAME),_variant_t(user.m_name)); 
	 
	if(bIP) 
	{ 
		elementPtr->setAttribute(_bstr_t(IP),_variant_t(user.m_ip)); 
		elementPtr->setAttribute(_bstr_t(PORT),_variant_t(user.m_nPort)); 
		elementPtr->setAttribute(_bstr_t(FPORT),_variant_t(user.m_nFilePort)); 
	} 
	 
	return docPtr; 
} 
 
//在网络上传输时,先打包 
template 
CString CXMLCommand::CreateNetPacket(IXMLDOMDocumentPtr docPtr) 
{ 
	IXMLDOMElementPtr elementPtr = docPtr->createElement(_bstr_t(NET)); 
	elementPtr->appendChild(docPtr->documentElement); 
	 
	docPtr->documentElement = elementPtr; 
	 
	return (char*)(docPtr->xml); 
} 
 
template 
BOOL CXMLCommand::HasNetPacket(CBuffer &buffer, CString &strXML) 
{ 
	int nPos1 = buffer.Scan(TAGNET1, 0); 
	if(nPos1 == -1) return FALSE; 
	//删除无效数据(不再NET包内部) 
	buffer.Delete(nPos1); 
	 
	int nPos2 = buffer.Scan(TAGNET2, 0); 
	 
	 
	if(nPos2 == -1) return FALSE; 
	 
	//分配足够的空间,多分配一个结尾符 
	int nSize = nPos2 + strlen(TAGNET2)+1; 
	PCHAR pBuf = new CHAR[nSize]; 
	memset(pBuf, 0, nSize); 
	 
	//从缓冲区中读入数据,并删除缓冲区内容 
	buffer.Read(pBuf, nSize-1); 
	 
	strXML = pBuf; 
	 
	//释放空间 
	free(pBuf); 
	return TRUE; 
	 
} 
 
//FALSE:指令格式不对 
template 
BOOL CXMLCommand::GetUserInfoFromNode(IXMLDOMNodePtr nodePtr, USERINFO &user, BOOL bIP) 
{ 
	IXMLDOMNamedNodeMapPtr nodeMapPtr = nodePtr->Getattributes(); 
	IXMLDOMNodePtr nodePtr1 = nodeMapPtr->getNamedItem(_bstr_t(ID)); 
	if(nodePtr1 == NULL) return FALSE; 
	IXMLDOMNodePtr nodePtr2 = nodeMapPtr->getNamedItem(_bstr_t(NAME)); 
	if(nodePtr2 == NULL) return FALSE; 
 
	user.m_id = atol((char*)nodePtr1->text); 
	sprintf(user.m_name, (char *)nodePtr2->text); 
	 
	if(bIP) 
	{ 
		IXMLDOMNodePtr nodePtr3 = nodeMapPtr->getNamedItem(_bstr_t(IP)); 
		if(nodePtr3 == NULL)  
			return FALSE;	 
		sprintf(user.m_ip, (char *)nodePtr3->text); 
 
		IXMLDOMNodePtr nodePtr4 = nodeMapPtr->getNamedItem(_bstr_t(PORT)); 
		if(nodePtr4 == NULL)  
			return FALSE;	 
		user.m_nPort = atol((char*)nodePtr4->text); 
 
		IXMLDOMNodePtr nodePtr5 = nodeMapPtr->getNamedItem(_bstr_t(FPORT)); 
		if(nodePtr5 == NULL)  
			return FALSE;	 
		user.m_nFilePort = atol((char*)nodePtr5->text); 
	} 
 
 
 
 
	 
	return TRUE; 
} 
 
 
#endif // !defined(AFX_XMLCOMMAND_H__468D863E_C56E_435B_9D2D_57CE71FC5037__INCLUDED_)