Nebula2探秘02-使用FileServer2

Nebula2探秘01-创建KernelServer&使用log

happykevins文

 

/****************************************************************************/
/*    Nebula2 - Tutorial 02                                                    */
/*  使用FileServer2                                                            */
/*  author: happykevins                                                        */
/****************************************************************************/

///----------------------------------------------------------------------------
/// +必要头文件

#include  " kernel/nkernelserver.h "
#include 
" kernel/nfileserver2.h "
#include 
" kernel/nfile.h "
#include 
" kernel/nautoref.h "
/// -必要头文件
///----------------------------------------------------------------------------

///----------------------------------------------------------------------------
/// +链接库

#pragma  comment(lib, "wsock32.lib")
#pragma  comment(lib, "d_nkernel.lib")
/// -链接库
///----------------------------------------------------------------------------

///----------------------------------------------------------------------------
/// +Application

int  main( int  argc,  const   char **  argv)
{
    
/// 创建KernelServer
    nKernelServer* ks = n_new(nKernelServer);

    
///----------------------------------------------------------------------------
    
/// +获得FileServer2的实例
    
/// @note:有以下四种方式。在一般情况下他们是等价的

    nFileServer2* pFileServer = NULL;
    
// 1.通过Singleton获得
    pFileServer = nFileServer2::Instance();
    
// 2.通过KernelServer直接获得
    pFileServer = ks->GetFileServer();
    
// 3.通过NOH体系获得
    pFileServer = (nFileServer2*)ks->Lookup("sys/servers/file2");
    
// 4.通过nAutoRef获得(同NOH体系获得法)
    nAutoRef<nFileServer2> refFileServer("sys/servers/file2");
    
if ( refFileServer.isvalid() )
    
{
        pFileServer 
= refFileServer.get();
    }

    
/// -获得FileServer2的实例
    
///----------------------------------------------------------------------------

    
    ks
->Print("*****Assigns Operation***** ");
    
///----------------------------------------------------------------------------
    
/// +Assigns
    
/// @note:
    
///    1.    Assigns是一种以标识替代绝对路径的技术,它对于应用程序的资源部署非常有用
    
///    2.    Assigns的变量都以nEnv类型存储在NOH体系的/sys/share/assigns/位置下
    
///    3.    /sys/share/assigns/home和/sys/share/assigns/bin是两个默认存在的变量,
    
///        分别是应用程序根和执行文件所在路径。
    
/// 4.    在设置完Assign路径后就可以通过"assign:filename"的形式来索引文件了。
    
///

    // 两个默认的assigns
    nString home = pFileServer->GetAssign("home");
    nString bin  
= pFileServer->GetAssign("bin");
    nString user 
= pFileServer->GetAssign("user");
    nString temp 
= pFileServer->GetAssign("temp");
    ks
->Print("home: %s ", home.Get());
    ks
->Print("bin : %s ", bin.Get() );
    ks
->Print("user: %s ", user.Get());
    ks
->Print("temp: %s ", temp.Get());
    
// 设置proj索引
    pFileServer->SetAssign("proj""d:/");
    nString proj 
= pFileServer->GetAssign("proj");
    ks
->Print("proj: %s ", proj.Get());
    
///
    
/// -Assigns
    
///----------------------------------------------------------------------------


    ks
->Print("*****File W/R Operation***** ");
    
///----------------------------------------------------------------------------
    
/// +File Operation
    
///


    
// get nFile object
    nFile* file = pFileServer->NewFileObject();

    
// open file for write
    file->Open("bin:T02.txt""w");
    
// write file
    nString output("T02 FileWriteTest!");
    file
->Write(output.Get(), output.Length());
    
// close file for write
    file->Close();

    
// open file for read
    file->Open("bin:T02.txt""r");
    
// read file content
    char buf[512];
    
int readCount = file->Read(buf, sizeof(buf));
    buf[readCount] 
= 0;
    
// log content
    nString absPath = pFileServer->ManglePath("bin:T02.txt");
    ks
->Print("Read File from: %s ", absPath.Get());
    ks
->Print("File Content: %s", buf);
    
// close file for read
    file->Close();

    
// release nFile object
    file->Release();

    
///
    
/// -File Operation
    
///----------------------------------------------------------------------------

    
/// 销毁KernelServer

    n_delete(ks);

    getchar();
    
return 0;
}

/// -Application
///----------------------------------------------------------------------------


Trackback: http://tb.blog.csdn.net/TrackBack.aspx?PostId=1249051


你可能感兴趣的:(server)