Symbian Base64编码与解码的简单实现

最新推荐文章于 2024-11-27 17:32:14 发布

原创最新推荐文章于 2024-11-27 17:32:14 发布 · 991 阅读

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#symbian #null #delete

本文提供了一种在Symbian平台上实现Base64编码与解码的方法，通过具体的C++代码示例介绍了如何进行Base64转换，适用于邮件客户端等应用开发。

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想自己在symbian上实现SMTP和POP的朋友,第一步就是要实现

Base64编码与解码,下面给出简单的实现代码:

//*
* ======================================================
* Name               :            CBase64Coder.h
* Author             :            FangYuan Gui
* Depend on lib    :           imut.lib
* =======================================================
*/

#ifndef __CBASE64CODER_H__
#define __CBASE64CODER_H__

#include <e32base.h>
#include <imcvcodc.h>//TImCodecB64

//Base64 Encode and decode
class CBase64Coder : public CBase
   {
public:
   static CBase64Coder* NewLC();
   static CBase64Coder* NewL();
   ~CBase64Coder();

   TPtr8 EncodeL( const TDesC8& aSrcStr );
   TPtr8 DecodeL( const TDesC8& aSrcStr );

   void ReleaseBuf();

private:
   CBase64Coder();

   TImCodecB64             iB64Coder;
   HBufC8*                 iBuf;
   };

#endif /* __CBASE64CODER_H__ */

/*
* ======================================================
* Name                :             CBase64Coder.cpp
* Author              :             FangYuan Gui
* Created on       :           2009-6-16
* =======================================================
*/

#include "CBase64Coder.h"

CBase64Coder::CBase64Coder()
    {
    iB64Coder.Initialise();
    }

CBase64Coder* CBase64Coder::NewLC()
    {
    CBase64Coder* self = new( ELeave )CBase64Coder();
    CleanupStack::PushL( self );
    return self;
    }

CBase64Coder* CBase64Coder::NewL()
    {
    CBase64Coder* self = CBase64Coder::NewLC();
    CleanupStack::Pop( self );
    return self;
    }

CBase64Coder::~CBase64Coder()
    {
    if( NULL != iBuf )
        {
        delete iBuf;
        iBuf = NULL;
         }
    }

TPtr8 CBase64Coder::EncodeL( const TDesC8& aSrcStr )
    {
    if( NULL != iBuf )
        {
        delete iBuf;
        iBuf = NULL;
        }

    iBuf = HBufC8::NewL( aSrcStr.Length() + aSrcStr.Length()/3 );

    TPtr8 bufPtr = iBuf->Des();
    iB64Coder.Encode( aSrcStr, bufPtr );

    return iBuf->Des();
    }

TPtr8 CBase64Coder::DecodeL( const TDesC8& aSrcStr )
    {
    if( NULL != iBuf )
    {
    delete iBuf;
    iBuf = NULL;
    }

    iBuf = HBufC8::NewL( aSrcStr.Length() );

    TPtr8 bufPtr = iBuf->Des();
    iB64Coder.Decode( aSrcStr, bufPtr );

    return iBuf->Des();
    }

void CBase64Coder::ReleaseBuf()
    {
    if( NULL != iBuf )
        {
        delete iBuf;
        iBuf = NULL;
        }
    }