/*
* Copyright 1997 Massachusetts Institute of Technology
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby
* granted, provided that both the above copyright notice and this
* permission notice appear in all copies, that both the above
* copyright notice and this permission notice appear in all
* supporting documentation, and that the name of M.I.T. not be used
* in advertising or publicity pertaining to distribution of the
* software without specific, written prior permission. M.I.T. makes
* no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied
* warranty.
*
* THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
* ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
* SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* mode.c - mechanisms for dealing with SGI-style modal displays.
*
* There are four generally-understood useful modes for status displays
* of the sort exemplified by the IRIX ``netstat -C'' and ``osview''
* programs. We try to follow their example, although the user interface
* and terminology slightly differ.
*
* RATE - the default mode - displays the precise rate of change in
* each statistic in units per second, regardless of the actual display
* update interval.
*
* DELTA - displays the change in each statistic over the entire
* display update interval (i.e., RATE * interval).
*
* SINCE - displays the total change in each statistic since the module
* was last initialized or reset.
*
* ABSOLUTE - displays the current value of each statistic.
*
* In the SGI programs, these modes are selected by the single-character
* commands D, W, N, and A. In systat, they are the slightly-harder-to-type
* ``mode delta'', etc. The initial value for SINCE mode is initialized
* when the module is first started and can be reset using the ``reset''
* command (as opposed to the SGI way where changing modes implicitly
* resets). A ``mode'' command with no arguments displays the current
* mode in the command line.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/types.h>
#include "systat.h"
#include "extern.h"
#include "mode.h"
enum mode currentmode = display_RATE;
static const char *const modes[] = { "rate", "delta", "since", "absolute" };
int
cmdmode(const char *cmd, const char *args)
{
if (prefix(cmd, "mode")) {
if (args[0] == '\0') {
move(CMDLINE, 0);
clrtoeol();
printw("%s", modes[currentmode]);
} else if (prefix(args, "rate")) {
currentmode = display_RATE;
} else if (prefix(args, "delta")) {
currentmode = display_DELTA;
} else if (prefix(args, "since")) {
currentmode = display_SINCE;
} else if (prefix(args, "absolute")) {
currentmode = display_ABS;
} else {
printw("unknown mode `%s'", args);
}
return 1;
}
if(prefix(cmd, "reset")) {
curcmd->c_reset();
return 1;
}
return 0;
}
