file: SystemStuff.cxx


/*--
  Description:
  We need low level C functions to communicate through named pipes. 
  These files have some C files that are used by WishIntfc. These need not
  be modified. 
  -*/

#include "SystemStuff.hxx"

/**************************************************************************/
/* writen:  try to write nbytes to a descriptor (stevens pg. 279)         */
/**************************************************************************/

int writen(int fd,char *ptr,int nbytes)
{
  int nleft,nwritten;

  nleft = nbytes;
  while (nleft > 0) 
    {
      nwritten = write(fd,ptr,nleft);
      if (nwritten <= 0)
	return(ERROR);

      nleft -= nwritten;
      ptr   += nwritten;
    }
  return(nbytes - nleft);
}




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