C / C++ / MFC

djfresh wrote:

The method "UuEncodeLength" returns me the same length...

INT32U UuEncodeLength(INT32U nSrcLen)
{
INT32U uDestLen;
uDestLen = (nSrcLen * 4) / 3;
if ( ((nSrcLen * 4) % 3) != 0 )
{ // we need a partial byte, add one...
uDestLen++;
}
return uDestLen;
}

• if nSrcLen = 1 then the function returns 2;
• if nSrcLen = 2 then the function returns 3;
• if nSrcLen = 3 then the function returns 4;
• if nSrcLen = 4 then the function returns 6;
• and so on...

• The UuDecodeLength and UuEncodeLength functions get the length of a string as parameter and return the required length of the correspondant decoded/encoded string.
• The UuDecode and UuEncode functions get three parameters: an output buffer, an input string and the length of the input string. They return the number of bytes written to the output buffer, and put on the output buffer the decoded/encoded version of the input string.

int main(int argc, char* argv[])
{
   INT8U in = "12";
   INT8U* out = (INT8U*)malloc(UuEncodeLength(2));
   INT32U n = UuEncode(out, in, 2);

   // Put a breakpoint here and look what happened
   // Now n is 3 and inside out you find ",3(" i.e.:
   // out[0] = ','
   // out[1] = '3'
   // out[2] = '('

   free(out);
}