Nebula2探秘12-基于Windows命令行的Nebula控制台

王朝system·作者佚名  2007-04-28
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Nebula2探秘12-基于Windows命令行的Nebula控制台

happykevins文

“工欲善其事,必先利其器!”

本文创建了一个在命令窗口下的Nebula命令控制台.可以直接执行脚本指令,察看当前Nebula的系统状态,察看NOH树及当前工作对象信息,对于调试和控制Nebula2程序非常实用方便!

本来Nebula2在nGui系统中已经实现了一个叫做nGuiCmdEntry的控件,这个控件就具备即时执行脚本的功能,但我们在实际开发中可能会抛弃nGui而使用其他如CEGUI的界面系统进行替换,所以我们需要一个通用的解决方案:适用Windows控制台作为Nebula控制台的载体,于是就产生了本文的nConConServer。

在nConConServer中借鉴了nGuiCmdEntry中对用户输入脚本指令的处理方式,并加入了几条实用的全局指令,使用”-help”指令查看全局指令帮助,代码如下:

/****************************************************************************/

/* Nebula2 - Tutorial Utils */

/* nConConServer - 控制台下的Nebula2指令控制台 */

/* author: happykevins */

/****************************************************************************/

#pragma once

#include "kernel/nkernelserver.h"

#include "kernel/nscriptserver.h"

#include "kernel/nautoref.h"

#define KS_USE_STDOUT

#include "nkernelinfo.h"

#undef KS_USE_STDOUT

#define LINE_BUF_MAX_SIZE 512

#define GLOBAL_CMD_TOKEN '-'

class nConConServer : public nRoot

{

public:

/// constructor

nConConServer();

/// destructor

virtual ~nConConServer();

/// Toggle Mode

void ToggleMode();

/// Poll Commands

void PollCmd();

/// Execute String

void ExecuteCommand(const char* szCmdStr);

protected:

/// set edit line buffer

void SetEditLine(const char* szCmdBuf);

/// execute the current command

void ExecuteEditLine();

/// checking the char effect

bool CheckingChar(char ch);

/// global function check

void ExecuteGlobal();

/// add current command to history

void AddCommandToHistory();

/// recall next command in history

void RecallNextCommand();

/// recall previous command in history

void RecallPrevCommand();

/// set local cwd

void SetCwd(nRoot* cwd);

/// get local cwd (can return 0)

nRoot* GetCwd();

/// update the tab completion stuff

void UpdateTabComplete();

/// perform a tab completion

void DoTabCompletion();

private:

nKernelInfoHelper m_info;

bool m_bRecvCmd;

size_t m_nLineBufPtr;

char m_szLineBuf[LINE_BUF_MAX_SIZE];

nString editLine;

nAutoRef<nScriptServer> refScriptServer;

nRef<nRoot> refCwd;

};

// nconconserver.cpp

#pragma warning(push)

#pragma warning(disable: 4267 4244)

#include "nconconserver.h"

#include "nutildefs.h"

///----------------------------------------------------------------------------

/// constructor

nConConServer::nConConServer() :

m_bRecvCmd(false),

refScriptServer("/sys/servers/script")

{

}

/// destructor

nConConServer::~nConConServer()

{

}

/// Toggle Mode

void nConConServer::ToggleMode()

{

m_bRecvCmd = !m_bRecvCmd;

if ( m_bRecvCmd )

{

// Welcome Text

printf(" ");

printf("%s ", "=========================");

printf("%s ", " ConConServer Welcome :)" );

printf("%s ", "=========================");

}

}

/// Poll Commands

void nConConServer::PollCmd()

{

while ( m_bRecvCmd )

{

printf(" :>");

memset(m_szLineBuf, 0, LINE_BUF_MAX_SIZE);

m_nLineBufPtr = 0;

char ch;

while ( (ch = getchar()) != ' ' )

{

if ( CheckingChar(ch) )

{

continue;

}

m_szLineBuf[m_nLineBufPtr] = ch;

m_nLineBufPtr++;

}

m_szLineBuf[m_nLineBufPtr] = '\0';

ExecuteCommand(m_szLineBuf);

}

}

/// Execute String

void nConConServer::ExecuteCommand(const char* szCmdStr)

{

SetEditLine(m_szLineBuf);

ExecuteEditLine();

}

/// set edit line buffer

void nConConServer::SetEditLine(const char* szCmdBuf)

{

editLine.Set(szCmdBuf);

}

/// execute the current command

void nConConServer::ExecuteEditLine()

{

// check and run global function

if ( GLOBAL_CMD_TOKEN == editLine[0] )

{

ExecuteGlobal();

return;

}

// check if script server is ok

if ( !refScriptServer.isvalid() )

{

printf("Error: Script Server is not Startup! ");

return;

}

nScriptServer* scriptServer = this->refScriptServer.get();

// make local cwd global

nKernelServer::Instance()->PushCwd(this->GetCwd());

// and run the command through the script server

nString result = 0;

bool failOnError = scriptServer->GetFailOnError();

scriptServer->SetFailOnError(false);

scriptServer->Run(this->editLine.Get(), result);

scriptServer->SetFailOnError(failOnError);

if (result.IsValid())

{

printf("%s ", result.Get());

}

this->AddCommandToHistory();

this->editLine.Clear();

// set new local cwd

nRoot* newCwd = nKernelServer::Instance()->GetCwd();

if (newCwd != this->GetCwd())

{

this->SetCwd(nKernelServer::Instance()->GetCwd());

this->UpdateTabComplete();

}

// restore previous cwd

nKernelServer::Instance()->PopCwd();

}

/// checking the char effect

bool nConConServer::CheckingChar(char ch)

{

return false;

}

/// global function check

void nConConServer::ExecuteGlobal()

{

char* szRealCmd = m_szLineBuf + 1;

if ( 0 == strcmp("help", szRealCmd) )

{

printf("%s ", "=========================");

printf("%s ", "ConConServer Help List :)");

printf("%s ", "=========================");

printf("%s ", "*Command List: ");

printf("%s ", " help: Show this Text!");

printf("%s ", " exit: Exit ConConServer Mode.");

printf("%s ", " noh : Display a Tree View of Nebula NOH.");

printf("%s ", " cls : Show Current Registered Class List.");

printf("%s ", " cwd : Show Current Working Object Info.");

printf("%s ", " mtd : Show the Methods that Current Working Object Support.");

}

else if ( 0 == strcmp("exit", szRealCmd) )

{

ToggleMode();

}

else if ( 0 == strcmp("noh", szRealCmd) )

{

m_info.LogNOH(this->GetCwd()->GetFullName().Get());

}

else if ( 0 == strcmp("cls", szRealCmd) )

{

m_info.LogCLS();

}

else if ( 0 == strcmp("cwd", szRealCmd) )

{

printf("CWD : %s ", this->GetCwd()->GetFullName().Get() );

printf("Class : %s ", this->GetCwd()->GetClass()->GetProperName() );

printf("Parent: %s ", this->GetCwd()->GetClass()->GetSuperClass()->GetProperName() );

}

else if ( 0 == strcmp("mtd", szRealCmd) )

{

nHashList* obj = this->GetCwd()->GetClass()->GetCmdList();

nCmdProto* node = (nCmdProto*)obj->GetHead();

do

{

printf("%s ", node->GetProtoDef());

} while ( (node = (nCmdProto*)node->GetSucc()) );

}

else

{

printf("%s ", "Error: '-' follows Unkown Globle Command!");

}

}

/// add current command to history

void nConConServer::AddCommandToHistory()

{

// empty.

}

/// recall next command in history

void nConConServer::RecallNextCommand()

{

// empty.

}

/// recall previous command in history

void nConConServer::RecallPrevCommand()

{

// empty.

}

/// set local cwd

void nConConServer::SetCwd(nRoot* cwd)

{

this->refCwd = cwd;

}

/// get local cwd (can return 0)

nRoot* nConConServer::GetCwd()

{

if ( !this->refCwd.isvalid() )

{

this->SetCwd(nKernelServer::Instance()->GetCwd());

}

return this->refCwd.get();

}

/// update the tab completion stuff

void nConConServer::UpdateTabComplete()

{

// ...

}

/// perform a tab completion

void nConConServer::DoTabCompletion()

{

// ...

}

///----------------------------------------------------------------------------

/// 声明为Nebula2脚本支持类

nNebulaScriptModule(nConConServer, nconconserver, "nroot");

/// ConConServer开关

static void n_toggle(void* slf, nCmd* cmd);

/// 执行控制台指令

static void n_exec(void* slf, nCmd* cmd);

/// Regist Commands

void nNebulaScriptInitCmds(nconconserver) (nClass* cl)

{

cl->BeginCmds();

cl->AddCmd("v_toggle_v", 'TOGL', n_toggle);

cl->AddCmd("v_exec_s", 'EXEC', n_exec);

cl->EndCmds();

}

/// ToggleMode的脚本支持

static void n_toggle(void* slf, nCmd* cmd)

{

nConConServer* self = (nConConServer*) slf;

self->ToggleMode();

}

/// ExecCommand的脚本支持

static void n_exec(void* slf, nCmd* cmd)

{

nConConServer* self = (nConConServer*) slf;

const char* szCmdStr = cmd->In()->GetS();

self->ExecuteCommand(szCmdStr);

}

///----------------------------------------------------------------------------

#pragma warning(pop)

其中ToggleMode()方法是切换到控制台模式的开关,已经加入了对脚本的支持,可以直接通过InputServer映射到一个按键上。

PollCmd()命令用于阻塞接受用户输入的指令。由于是以Windows控制台实现,所以只能以阻塞模式接受用户输入,在执行PollCmd()函数后应用程序会停止运行,直到用户在控制台中输入”-exit”指令,nConConServer才会把控制权释放掉。

下面给出nConConServer的使用事例代码:

/****************************************************************************/

/* Nebula2 - Tutorial 12 */

/* A Console Server for Console */

/* author: happykevins */

/****************************************************************************/

///----------------------------------------------------------------------------

/// +必要头文件

// nebula2 includes

#include "kernel/nkernelserver.h"

#include "script/ntclserver.h"

// ConConServer头文件

#include "../NebulaUtils/nConConServer.h"

// Tutorial工具库:一些通用的宏定义

#include "../NebulaUtils/nutildefs.h"

/// -必要头文件

///----------------------------------------------------------------------------

///----------------------------------------------------------------------------

/// +链接库

#pragma comment(lib, "wsock32.lib")

#pragma comment(lib, "d_nkernel.lib")

#pragma comment(lib, "d_nnebula.lib")

#pragma comment(lib, "d_microtcl.lib")

/// -链接库

///----------------------------------------------------------------------------

///----------------------------------------------------------------------------

/// +声明使用的Nebula2 Package&Module

nNebulaUseModule(ntclserver);

/// -声明使用的Nebula2 Package&Module

///----------------------------------------------------------------------------

nKernelServer* ks = NULL;

///----------------------------------------------------------------------------

/// +初始化环境,创建需要的Server

///

bool InitApp()

{

/// 创建KernelServer

ks = n_new(nKernelServer);

///----------------------------------------------------------------------------

/// +向KernelServer中添加Package&Module

nNebulaAddModule(ntclserver);

/// +向KernelServer中添加Package&Module

///----------------------------------------------------------------------------

ks->New("ntclserver", "/sys/servers/script");

return true;

}

///

/// -初始化环境,创建需要的Server

///----------------------------------------------------------------------------

///----------------------------------------------------------------------------

/// +退出程序,清理资源

///

bool CloseApp()

{

/// 销毁KernelServer

n_delete(ks);

return true;

}

///

/// -退出程序,清理资源

///----------------------------------------------------------------------------

///----------------------------------------------------------------------------

/// +Application

int main(int argc, const char** argv)

{

/// 初始化Application

if ( !InitApp() )

{

n_error("程序初始化失败! ");

return 0;

}

/// ConConServer

nConConServer console;

/// 切出ConConServer

console.ToggleMode();

/// 轮训控制台指令,(阻塞模式)

console.PollCmd();

/// 释放资源

if ( !CloseApp() )

{

n_error("释放资源失败! ");

return 0;

}

return 0;

}

/// -Application

///----------------------------------------------------------------------------

--The End--

 
 
 
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