//Default handler if no proper handler is located.
VOID DefaultHandler(LPSTR pstr)
{
CD_ChangeLine();
CD_PrintString(ERROR_STR,FALSE);
return;
}
//打印字符串,cl表示是否换行
VOID CD_PrintString(LPSTR pStr,BOOL cl)
{
#ifdef __I386__
VGA_PrintString(pStr,FALSE);
if(cl)
{
CD_GotoHome();
CD_ChangeLine();
}
#endif
#ifdef __CFG_SYS_CONSOLE
Console.PrintStr(pStr);
if(cl == TRUE)
{
CD_ChangeLine();
}
#endif
}
//Print out command prompt.
static VOID PrintPrompt()
{
WORD CursorX = 0;
WORD CursorY = 0;
CD_GetCursorPos(&CursorX,&CursorY);
if(CursorX != 0)
{
CD_ChangeLine();
CD_GetCursorPos(&CursorX,&CursorY);
}
CD_PrintString(s_szPrompt,FALSE);
CursorX = strlen(s_szPrompt);
CD_SetCursorPos(CursorX,CursorY);
}
void ChangeLine()
{
CD_ChangeLine();
}
//Command analyzing routine,it analyzes user's input and search
//command array to find a proper handler,then call it.
//Default handler will be called if no proper command handler is
//located.
static BOOL DoCommand()
{
__KERNEL_THREAD_OBJECT* hKernelThread = NULL;
BOOL bResult = FALSE; //If find the correct command object,then
static CHAR szCmdBuffer[CMD_MAX_LEN] = {0};
DWORD dwIndex = 0; //Used for 'for' loop.
WORD CursorX = 0;
WORD CursorY = 0;
//µÃµ½ÃüÁîÊäÈë´®
CD_GetCursorPos(&CursorX,&CursorY);
memset(szCmdBuffer,0,sizeof(szCmdBuffer));
CD_GetString(SHELL_INPUT_START_X,CursorY,szCmdBuffer,sizeof(szCmdBuffer));
strtrim(szCmdBuffer,TRIM_LEFT|TRIM_RIGHT);
if(strlen(szCmdBuffer) <= 0)
{
return FALSE;
}
dwIndex = 0;
while(CmdObj[dwIndex].CmdStr)
{
if(strcmp(szCmdBuffer,CmdObj[dwIndex].CmdStr) == 0)
{
CD_ChangeLine();
CmdObj[dwIndex].CmdHandler(szCmdBuffer); //Call the command handler.
bResult = TRUE; //Set the flag.
break;
}
dwIndex ++;
}
if(bResult)
{
goto __END;
}
dwIndex = 0; //Now,should search external command array.
while(ExtCmdArray[dwIndex].lpszCmdName)
{
if(strcmp(szCmdBuffer,ExtCmdArray[dwIndex].lpszCmdName) == 0) //Found.
{
CD_ChangeLine();
hKernelThread = KernelThreadManager.CreateKernelThread(
(__COMMON_OBJECT*)&KernelThreadManager,
0,
KERNEL_THREAD_STATUS_READY,
PRIORITY_LEVEL_NORMAL,
ExtCmdArray[dwIndex].ExtCmdHandler,
(LPVOID)szCmdBuffer, //?
NULL,
NULL);
if(!ExtCmdArray[dwIndex].bBackground) //Should wait.
{
DeviceInputManager.SetFocusThread((__COMMON_OBJECT*)&DeviceInputManager,
(__COMMON_OBJECT*)hKernelThread); //Give the current input focus to this thread.
hKernelThread->WaitForThisObject((__COMMON_OBJECT*)hKernelThread);
KernelThreadManager.DestroyKernelThread(
(__COMMON_OBJECT*)&KernelThreadManager,
(__COMMON_OBJECT*)hKernelThread); //Destroy it.
//Set focus thread to shell.
DeviceInputManager.SetFocusThread((__COMMON_OBJECT*)&DeviceInputManager,NULL);
}
bResult = TRUE;
goto __END;
}
dwIndex ++;
}
if(!bResult)
{
DefaultHandler(NULL); //Call the default command handler.
}
__END:
His_SaveCmd(s_hHiscmdInoObj,szCmdBuffer);
//SaveCmdStr(szCmdBuffer);
return bResult;
}
