usr.bin/systat/globalcmds.c

   1 /*      $NetBSD: globalcmds.c,v 1.14 2009/04/13 23:20:27 lukem Exp $ */
   2
   3 /*-
   4  * Copyright (c) 1999
   5  *      The NetBSD Foundation, Inc.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by the NetBSD Foundation.
  18  * 4. Neither the name of the Foundation nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #include <sys/cdefs.h>
  36 #ifndef lint
  37 __RCSID("$NetBSD: globalcmds.c,v 1.14 2009/04/13 23:20:27 lukem Exp $");
  38 #endif /* not lint */
  39
  40 #include <curses.h>
  41 #include <stdlib.h>
  42 #include <string.h>
  43 #include <unistd.h>
  44
  45 #include "systat.h"
  46 #include "extern.h"
  47
  48 static char *shortname(const char *, const char *);
  49
  50 static char *
  51 shortname(const char *key, const char *s)
  52 {
  53         char *p, *q;
  54         size_t len;
  55
  56         if (key == NULL) {
  57                 if ((p = strdup(s)) == NULL)
  58                         return NULL;
  59                 q = strchr(p, '.');
  60                 if (q && strlen(q) > 1) {
  61                         q[1] = '*';
  62                         q[2] = '\0';
  63                 }
  64                 return p;
  65         }
  66
  67         len = strlen(key);
  68         if (strncmp(key, s, len) == 0 && s[len] == '.') {
  69                 p = strdup(s + len + 1);
  70                 if (!p)
  71                         return NULL;
  72                 return p;
  73         }
  74         return NULL;
  75 }
  76
  77 void
  78 global_help(char *args)
  79 {
  80         int col, len;
  81         struct mode *p;
  82         char *name, *prev;
  83
  84         move(CMDLINE, col = 0);
  85         name = prev = NULL;
  86         for (p = modes; p->c_name; p++) {
  87                 if ((name = shortname(args, p->c_name)) == NULL)
  88                         continue;
  89                 if (name && prev && strcmp(name, prev) == 0) {
  90                         free(name);
  91                         name = NULL;
  92                         continue;
  93                 }
  94                 len = strlen(name);
  95                 if (col + len > COLS)
  96                         break;
  97                 addstr(name);
  98                 col += len + 1;
  99                 if (col + 1 < COLS)
 100                         addch(' ');
 101                 if (prev)
 102                         free(prev);
 103                 prev = name;
 104                 name = NULL;
 105         }
 106         if (col == 0 && args) {
 107                 standout();
 108                 if ((int)strlen(args) < COLS - 25)
 109                         printw("help: no matches for `%s.*'", args);
 110                 else
 111                         printw("help: no matches");
 112                 standend();
 113         }
 114         clrtoeol();
 115         if (name)
 116                 free(name);
 117         if (prev)
 118                 free(prev);
 119 }
 120
 121 void
 122 global_interval(char *args)
 123 {
 124         int interval;
 125
 126         if (!args) {
 127                 interval = 5;
 128         } else {
 129                 interval = atoi(args);
 130         }
 131
 132         if (interval <= 0) {
 133                 error("%d: bad interval.", interval);
 134                 return;
 135         }
 136
 137         naptime = interval;
 138         display(0);
 139         status();
 140 }
 141
 142
 143 void
 144 global_load(char *args)
 145 {
 146         (void)getloadavg(avenrun, sizeof(avenrun)/sizeof(avenrun[0]));
 147         mvprintw(CMDLINE, 0, "%4.1f %4.1f %4.1f",
 148             avenrun[0], avenrun[1], avenrun[2]);
 149         clrtoeol();
 150 }
 151
 152 void
 153 global_quit(char *args)
 154 {
 155         die(0);
 156 }
 157
 158 void
 159 global_stop(char *args)
 160 {
 161         timeout(-1);
 162         mvaddstr(CMDLINE, 0, "Refresh disabled.");
 163         clrtoeol();
 164 }