Function http_debug_hex

cups/http.c:4104–4152

 */

static void
http_debug_hex(const char *prefix,	/* I - Prefix for line */
               const char *buffer,	/* I - Buffer to dump */
               int        bytes)	/* I - Bytes to dump */
{
  int	i, j,				/* Looping vars */
	ch;				/* Current character */
  char	line[255],			/* Line buffer */
	*start,				/* Start of line after prefix */
	*ptr;				/* Pointer into line */


  if (_cups_debug_fd < 0 || _cups_debug_level < 6)
    return;

  DEBUG_printf(("9%s: %d bytes:", prefix, bytes));

  snprintf(line, sizeof(line), "9%s: ", prefix);
  start = line + strlen(line);

  for (i = 0; i < bytes; i += 16)
  {
    for (j = 0, ptr = start; j < 16 && (i + j) < bytes; j ++, ptr += 2)
      snprintf(ptr, 3, "%02X", buffer[i + j] & 255);

    while (j < 16)
    {
      memcpy(ptr, "  ", 3);
      ptr += 2;
      j ++;
    }

    memcpy(ptr, "  ", 3);
    ptr += 2;

    for (j = 0; j < 16 && (i + j) < bytes; j ++)
    {
      ch = buffer[i + j] & 255;

      if (ch < ' ' || ch >= 127)
	ch = '.';

      *ptr++ = (char)ch;
    }

    *ptr = '\0';
    DEBUG_puts(line);
  }
}
#endif /* DEBUG */