Convert const string& to CByteArray ?

mmayur

Hi, How do i convert a const string& to CByteArray ? I have to convert the string to CByteArray and pass the member functions GetData() and GetSize() to a method as parameters Is it possible or is there an alternative way of converting string to CByteArray. An example would be appreciated. Thanks in advance, Regards, Mayur M

CPallini

Try (I didn't test it...)

CString str = _T("Hi");
CByteArray arr;
int iSize = (str.GetLength()+1) * sizeof(TCHAR)
const BYTE * pByte = (const BYTE *) (LPCTSTR) str;
for (i = 0; i < iSize; i++)
{
arr.Add(pByte[i]);
}

:)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke
[My articles]

mmayur

Thanks for your reply. The code snippet works fine. But the snippet is for convertion of CString to CByteArray. But i'm looking for a const string conversion to CByteArray. Even if i use the CString conversion to CByteArray, is there any inbuilt methods rather than using the for loop. Regards, Mayur M

CPallini

mayur8u wrote:

But i'm looking for a const string conversion to CByteArray.

Are you talking about std::string?

mayur8u wrote:

Even if i use the CString conversion to CByteArray, is there any inbuilt methods rather than using the for loop.

Yes, you may use CByteArray methods SetSize and Getdata to copy the string content into the array buffer.

CString str = _T("Hi");
CByteArray arr;
int iSize = (str.GetLength()+1) * sizeof(TCHAR)
arr.SetSize(iSize);
const BYTE * pByte = (const BYTE *) (LPCTSTR) str;
CopyMemory( arr.GetData(), pByte, iSize);

As usual, the test is up to you. :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke
[My articles]

mmayur

Ya! i'm talking about converting from std::string to CByteArray. If there is no solution then i might have to go to CString. (Last option)

CPallini

std::string str("Hi");
int iLen = str.length();
CByteArray arr;
arr.SetSize(iLen);
CopyMemory( arr.GetData(), str.c_str(), iLen);

Please note, the above code is not adding the null terminator at the tail of the array. :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke
[My articles]

mmayur

How about the CByteArray to std:string?

frx96

char str[] = "abcdef"; int iSize = strlen(str); BYTE * pByte = (BYTE *) str; CByteArray arr; for (int i = 0; i < iSize; i++) { arr.Add(pByte[i]); } the loop is must use.

mmayur

Hi, I'm able to convert const string& to CByteArray using the memcpy(byteArr.GetData(), source.c_str(), source.length()); Does converting back the CByteArray to const string& work the same way using memcpy? Regards, Mayur M