Function copy_bytes

filter/pstops.c:514–546

 */

static void
copy_bytes(cups_file_t *fp,		/* I - File to read from */
           off_t       offset,		/* I - Offset to page data */
           size_t      length)		/* I - Length of page data */
{
  char		buffer[8192];		/* Data buffer */
  ssize_t	nbytes;			/* Number of bytes read */
  size_t	nleft;			/* Number of bytes left/remaining */


  nleft = length;

  if (cupsFileSeek(fp, offset) < 0)
  {
    _cupsLangPrintError("ERROR", _("Unable to see in file"));
    return;
  }

  while (nleft > 0 || length == 0)
  {
    if (nleft > sizeof(buffer) || length == 0)
      nbytes = sizeof(buffer);
    else
      nbytes = (ssize_t)nleft;

    if ((nbytes = cupsFileRead(fp, buffer, (size_t)nbytes)) < 1)
      return;

    nleft -= (size_t)nbytes;

    fwrite(buffer, 1, (size_t)nbytes, stdout);
  }
}


/*