base64_decode.c

Base64解码的实例

/*===========================================================================

FILE: Base64_Decode.c
===========================================================================*/


/*===============================================================================
INCLUDES AND VARIABLE DEFINITIONS
=============================================================================== */
#include "AEEModGen.h"          // Module interface definitions
#include "AEEAppGen.h"          // Applet interface definitions
#include "AEEShell.h"           // Shell interface definitions
#include "AEEFile.h"
#include "AEEWeb.h"


#include "Base64_Decode.bid"


#define BASE64_FILE_PATH "1.txt"
#define DES_FILE_PATH "2.txt"

/*-------------------------------------------------------------------
Applet structure. All variables in here are reference via "pMe->"
-------------------------------------------------------------------*/
typedef struct _Base64_Decode {
	AEEApplet      a ;	       // First element of this structure must be AEEApplet
    AEEDeviceInfo  DeviceInfo; // always have access to the hardware device information

    // add your own variables here...



} Base64_Decode;

/*-------------------------------------------------------------------
Function Prototypes
-------------------------------------------------------------------*/
static  boolean Base64_Decode_HandleEvent(Base64_Decode* pMe, AEEEvent eCode, 
                                             uint16 wParam, uint32 dwParam);
boolean Base64_Decode_InitAppData(Base64_Decode* pMe);
void    Base64_Decode_FreeAppData(Base64_Decode* pMe);

/*===============================================================================
FUNCTION DEFINITIONS
=============================================================================== */

/*===========================================================================
FUNCTION: AEEClsCreateInstance
===========================================================================*/
int AEEClsCreateInstance(AEECLSID ClsId, IShell *pIShell, IModule *po, void **ppObj)
{
	*ppObj = NULL;

	if( ClsId == AEECLSID_BASE64_DECODE )
	{
		// Create the applet and make room for the applet structure
		if( AEEApplet_New(sizeof(Base64_Decode),
                          ClsId,
                          pIShell,
                          po,
                          (IApplet**)ppObj,
                          (AEEHANDLER)Base64_Decode_HandleEvent,
                          (PFNFREEAPPDATA)Base64_Decode_FreeAppData) ) // the FreeAppData function is called after sending EVT_APP_STOP to the HandleEvent function
                          
		{
			//Initialize applet data, this is called before sending EVT_APP_START
            // to the HandleEvent function
			if(Base64_Decode_InitAppData((Base64_Decode*)*ppObj))
			{
				//Data initialized successfully
				return(AEE_SUCCESS);
			}
			else
			{
				//Release the applet. This will free the memory allocated for the applet when
				// AEEApplet_New was called.
				IAPPLET_Release((IApplet*)*ppObj);
				return EFAILED;
			}

        } // end AEEApplet_New

    }

	return(EFAILED);
}

void  StartDecode(Base64_Decode *pMe)
{
   IFileMgr    *piFileMgr = NULL;
   IFile       *piFile = NULL;
   IWebUtil    *piWebUtil = NULL;
   char        *pcOrig = NULL;
   FileInfo    stFileInfo;
   char        *pcDes = NULL;
   int         iSize = 0;


   ISHELL_CreateInstance(pMe->a.m_pIShell, AEECLSID_WEBUTIL, &piWebUtil);
   ISHELL_CreateInstance(pMe->a.m_pIShell, AEECLSID_FILEMGR_313, &piFileMgr);

   piFile = IFILEMGR_OpenFile(piFileMgr, BASE64_FILE_PATH, _OFM_READ);
   
   IFILEMGR_GetInfo(piFileMgr, BASE64_FILE_PATH, &stFileInfo);

   pcOrig = MALLOC(stFileInfo.dwSize + 1);
   pcDes = MALLOC(stFileInfo.dwSize + 1);
   MEMSET(pcOrig, 0, stFileInfo.dwSize + 1);
   MEMSET(pcDes, 0, stFileInfo.dwSize + 1);

   IFILE_Read(piFile, pcOrig, stFileInfo.dwSize);

   IFILE_Release(piFile);

   iSize = IWEBUTIL_DecodeBase64(piWebUtil, pcOrig, pcDes);

   piFile = IFILEMGR_OpenFile(piFileMgr, DES_FILE_PATH, _OFM_CREATE);

   IFILE_Write(piFile, pcDes, iSize);

   IFILE_Release(piFile);

   IFILEMGR_Release(piFileMgr);
   IWEBUTIL_Release(piWebUtil);

}


/*===========================================================================
FUNCTION SampleAppWizard_HandleEvent
===========================================================================*/
static boolean Base64_Decode_HandleEvent(Base64_Decode* pMe, AEEEvent eCode, uint16 wParam, uint32 dwParam)
{  

    switch (eCode) 
	{
        // App is told it is starting up
        case EVT_APP_START:                        
		    // Add your code here...
            StartDecode(pMe);

            return(TRUE);


        // App is told it is exiting
        case EVT_APP_STOP:
            // Add your code here...

      		return(TRUE);


        // App is being suspended 
        case EVT_APP_SUSPEND:
		    // Add your code here...

      		return(TRUE);


        // App is being resumed
        case EVT_APP_RESUME:
		    // Add your code here...

      		return(TRUE);


        // An SMS message has arrived for this app. Message is in the dwParam above as (char *)
        // sender simply uses this format "//BREW:ClassId:Message", example //BREW:0x00000001:Hello World
        case EVT_APP_MESSAGE:
		    // Add your code here...

      		return(TRUE);

        // A key was pressed. Look at the wParam above to see which key was pressed. The key
        // codes are in AEEVCodes.h. Example "AVK_1" means that the "1" key was pressed.
        case EVT_KEY:
		    // Add your code here...

      		return(TRUE);


        // If nothing fits up to this point then we'll just break out
        default:
            break;
   }

   return FALSE;
}


// this function is called when your application is starting up
boolean Base64_Decode_InitAppData(Base64_Decode* pMe)
{
    // Get the device information for this handset.
    // Reference all the data by looking at the pMe->DeviceInfo structure
    // Check the API reference guide for all the handy device info you can get
    pMe->DeviceInfo.wStructSize = sizeof(pMe->DeviceInfo);
    ISHELL_GetDeviceInfo(pMe->a.m_pIShell,&pMe->DeviceInfo);

    // Insert your code here for initializing or allocating resources...



    // if there have been no failures up to this point then return success
    return TRUE;
}

// this function is called when your application is exiting
void Base64_Decode_FreeAppData(Base64_Decode* pMe)
{
    // insert your code here for freeing any resources you have allocated...

    // example to use for releasing each interface:
    // if ( pMe->pIMenuCtl != NULL )         // check for NULL first
    // {
    //    IMENUCTL_Release(pMe->pIMenuCtl)   // release the interface
    //    pMe->pIMenuCtl = NULL;             // set to NULL so no problems trying to free later
    // }
    //

}