#include <ECF/ECF.h>

#define COPYFILE_BUFFERSIZE   4096

void CopyFile(const char *cszSource, const char *cszDestination)
{
   struct ECF_FileHandle srcFile;
   struct ECF_FileHandle destFile;
   DWORD dwDataLeftToCopy;
   DWORD dwDataToCopyNow;
   BYTE abCopyBuffer[COPYFILE_BUFFERSIZE];

   // Error checking omitted
   ECF_OpenFile(&srcFile, cszSource, ECF_MODE_READ);
   ECF_OpenFile(&destFile, cszDestination, ECF_MODE_READ_WRITE);

   ECF_GetFileSize(&srcFile, &dwDataLeftToCopy);

   while(dwDataLeftToCopy)
   {
      dwDataToCopyNow = COPYFILE_BUFFERSIZE;
      if(dwDataToCopyNow > dwDataLeftToCopy)
         dwDataToCopyNow = dwDataLeftToCopy;
      
      ECF_ReadFile(&srcFile, abCopyBuffer, dwDataToCopyNow);
      ECF_WriteFile(&destFile, abCopyBuffer, dwDataToCopyNow);
   
      dwDataLeftToCopy -= dwDataToCopyNow;
   }
   ECF_CloseFile(&destFile);
   ECF_CloseFile(&srcFile);
}