2 * tc.sched.c: Scheduled command execution
4 * Karl Kleinpaste: Computer Consoles Inc. 1984
7 * Copyright (c) 1980, 1991 The Regents of the University of California.
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39 extern int just_signaled;
42 struct sched_event *t_next;
46 static struct sched_event *sched_ptr = NULL;
53 return (sched_ptr->t_when);
54 return ((time_t) - 1);
59 dosched(Char **v, struct command *c)
61 struct sched_event *tp, **pp;
63 int count, hours, minutes, dif_hour, dif_min;
65 int relative; /* time specified as +hh:mm */
69 /* This is a major kludge because of a gcc linker */
70 /* Problem. It may or may not be needed for you */
71 #if defined(_MINIX) && !defined(_MINIX_VMD)
73 extern char *sprintf();
74 sprintf(kludge, CGETS(24, 1, "kludge"));
75 #endif /* _MINIX && !_MINIX_VMD */
81 if ((fmt = varval(STRsched)) == STRNULL)
82 fmt = str2short("%h\t%T\t%R\n");
83 /* print list of scheduled events */
84 for (count = 1, tp = sched_ptr; tp; count++, tp = tp->t_next) {
87 buf = blkexpand(tp->t_lex);
88 cleanup_push(buf, xfree);
89 str = tprintf(FMT_SCHED, fmt, short2str(buf), tp->t_when, &count);
91 cleanup_push(str, xfree);
100 /* remove item from list */
102 stderror(ERR_NOSCHED);
104 stderror(ERR_SCHEDUSAGE);
105 count = atoi(short2str(++cp));
107 stderror(ERR_SCHEDUSAGE);
119 stderror(ERR_SCHEDEV);
126 /* else, add an item to the list */
128 stderror(ERR_SCHEDCOM);
130 if (!Isdigit(*cp)) { /* not abs. time */
132 stderror(ERR_SCHEDUSAGE);
136 hours = atoi(short2str(cp));
137 while (*cp && *cp != ':' && *cp != 'a' && *cp != 'p')
139 if (*cp && *cp == ':')
140 minutes = atoi(short2str(++cp));
141 if ((hours < 0) || (minutes < 0) ||
142 (hours > 23) || (minutes > 59))
143 stderror(ERR_SCHEDTIME);
144 while (*cp && *cp != 'p' && *cp != 'a')
147 stderror(ERR_SCHEDREL);
150 (void) time(&cur_time);
151 ltp = localtime(&cur_time);
157 if ((dif_hour = hours - ltp->tm_hour) < 0)
159 if ((dif_min = minutes - ltp->tm_min) < 0) {
161 if ((--dif_hour) < 0)
165 tp = xcalloc(1, sizeof *tp);
167 tp->t_when = cur_time - ltp->tm_sec + dif_hour * 3600 + dif_min * 60;
169 tp->t_when = cur_time - ltp->tm_sec + dif_hour * 3600L + dif_min * 60L;
171 /* use of tm_sec: get to beginning of minute. */
172 for (pp = &sched_ptr; *pp != NULL && tp->t_when >= (*pp)->t_when;
177 tp->t_lex = saveblk(v);
181 * Execute scheduled events
187 struct sched_event *tp;
188 struct wordent cmd, *nextword, *lastword;
193 cleanup_push(&pintr_disabled, disabled_cleanup);
195 (void) time(&cur_time);
197 /* bugfix by: Justin Bur at Universite de Montreal */
199 * this test wouldn't be necessary if this routine were not called before
200 * each prompt (in sh.c). But it is, to catch missed alarms. Someone
201 * ought to fix it all up. -jbb
203 if (!(sched_ptr && sched_ptr->t_when < cur_time)) {
204 cleanup_until(&pintr_disabled);
211 while ((tp = sched_ptr) != NULL && tp->t_when < cur_time) {
219 for (cp = *v; cp; cp = *++v) {
220 nextword = xcalloc(1, sizeof cmd);
221 nextword->word = Strsave(cp);
222 lastword->next = nextword;
223 nextword->prev = lastword;
226 lastword->next = &cmd;
228 sched_ptr = tp->t_next; /* looping termination cond: */
229 blkfree(tp->t_lex); /* straighten out in case of */
230 xfree(tp); /* command blow-up. */
232 cleanup_push(&cmd, lex_cleanup);
233 /* expand aliases like process() does. */
235 /* build a syntax tree for the command. */
236 t = syntax(cmd.next, &cmd, 0);
237 cleanup_push(t, syntax_cleanup);
240 /* execute the parse tree. */
241 execute(t, -1, NULL, NULL, TRUE);
242 /* done. free the lex list and parse tree. */
245 if (GettingInput && !just_signaled) { /* PWP */
247 ClearLines(); /* do a real refresh since something may */
248 ClearDisp(); /* have printed to the screen */
253 cleanup_until(&pintr_disabled);