date and time created 83/10/02 21:41:00 by sam

SCCS-vsn: usr.bin/systat/cmds.c 1.1

diff --git a/usr/src/usr.bin/systat/cmds.c b/usr/src/usr.bin/systat/cmds.c
new file mode 100644 (file)
index 0000000..aefd22b
--- /dev/null
+++ b/usr/src/usr.bin/systat/cmds.c
@@ -0,0 +1,138 @@
+#ifndef lint
+static char sccsid[] = "@(#)cmds.c     1.1 (Lucasfilm) %G%";
+#endif
+
+/*
+ * Command support.
+ */
+
+#include "systat.h"
+
+command(cmd)
+        char *cmd;
+{
+        register char *cp;
+        register struct cmdtab *p;
+        char *arg;
+
+        for (cp = cmd; *cp && !isspace(*cp); cp++)
+                ;
+        if (*cp)
+                *cp++ = '\0';
+        if (strcmp(cmd, "quit") == 0)
+                die();
+        if (strcmp(cmd, "status") == 0 || strcmp(cmd, "help") == 0) {
+                status();
+                return;
+        }
+       if (strcmp(cmd, "load") == 0) {
+               load();
+               return;
+       }
+       p = getcmd(cmd);
+        if (p != (struct cmdtab *)-1) {
+                if (curcmd == p)
+                        return;
+                alarm(0);
+               (*curcmd->c_close)(wnd);
+               wnd = (*p->c_open)();
+                curcmd = p;
+               if (p->c_flags == 0) {
+                       (*p->c_init)();
+                       p->c_flags = 1;
+               }
+               labels();
+                display();
+                status();
+                return;
+        }
+        if (strcmp(cmd, "stop") == 0) {
+                alarm(0);
+                mvaddstr(22, 0, "Refresh disabled.");
+                clrtoeol();
+                return;
+        }
+        /* commands with arguments */
+        for (; *cp && isspace(*cp); cp++)
+                ;
+        if (strcmp(cmd, "start") == 0) {
+                int x;
+
+                if (*cp == '\0')
+                        x = naptime;
+                else
+                        x = atoi(cp);
+                if (x <= 0) {
+                        mvprintw(22, 0, "%d: bad interval.", x);
+                        clrtoeol();
+                        return;
+                }
+                alarm(0);
+                naptime = x;
+                display();
+                status();
+                return;
+        }
+       if (*cmd) {
+               mvprintw(22, 0, "%s: Unknown command.", cmd);
+               clrtoeol();
+       }
+}
+
+struct cmdtab *
+getcmd(name)
+       register char *name;
+{
+       register char *p, *q;
+       register struct cmdtab *c, *found;
+       register int nmatches, longest;
+
+       longest = 0;
+       nmatches = 0;
+       found = 0;
+       for (c = cmdtab; p = c->c_name; c++) {
+               for (q = name; *q == *p++; q++)
+                       if (*q == 0)            /* exact match? */
+                               return (c);
+               if (!*q) {                      /* the name was a prefix */
+                       if (q - name > longest) {
+                               longest = q - name;
+                               nmatches = 1;
+                               found = c;
+                       } else if (q - name == longest)
+                               nmatches++;
+               }
+       }
+       if (nmatches > 1)
+               return ((struct cmdtab *)-1);
+       return (found);
+}
+
+status()
+{
+
+        mvprintw(22, 0, "Showing %s, refresh every %d seconds.",
+          curcmd->c_name, naptime);
+        clrtoeol();
+}
+
+suspend()
+{
+        int oldmask;
+
+       alarm(0);
+        move(22, 0);
+        refresh();
+        echo();
+        nocrmode();
+        signal(SIGTSTP, SIG_DFL);
+        oldmask = sigsetmask(0);
+        kill(getpid(), SIGTSTP);
+        sigsetmask(oldmask);
+        signal(SIGTSTP, suspend);
+        crmode();
+        noecho();
+        move(22, col);
+        wrefresh(curscr);
+       alarm(naptime);
+}