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#ifndef lint
static char *sccsid = "@(#)xcal_alarm.c 1.25 (Hillside Systems) 8/9/94";
static char *copyright = "@(#)Copyright 1989,1990,1993 Mark Majhor, Peter Collinson";
#endif /* lint */
/***
* module name:
xcal_alarm.c
* function:
Deal with editable days
This is derived from xcalendar's view of how to store things
* history:
Original idea and code from
Mark Majhor, Sequent written August 1990, received Sept 1990
I have reworked most of the code and algorithms
Peter Collinson
Hillside Systems
* (C) Copyright: 1989/1990 Hillside Systems/Peter Collinson/Mark Majhor
For full permissions and copyright notice - see xcal.c
***/
#include <X11/IntrinsicP.h> /* for toolkit stuff */
#include <X11/Intrinsic.h>
#include <X11/Xos.h>
#include <X11/StringDefs.h> /* for useful atom names */
#include <X11/Shell.h>
#include <X11/Xaw/AsciiText.h>
#include <X11/Xaw/Text.h>
#include <X11/Xaw/Command.h>
#include <X11/Xaw/Label.h>
#include <X11/Xaw/Form.h>
#include <X11/Xaw/Paned.h>
#include <stdio.h> /* for printing error messages */
#include <ctype.h>
#include <sys/stat.h> /* for stat() */
#include <pwd.h> /* for getting username */
#include <errno.h>
#include "xcal.h"
#ifndef wordBreak
#define wordBreak 0x01
#define scrollVertical 0x02
#endif
static char *LocalMapStem;
static int LocalMapStemMade; /* day when LocalMapStem made last */
static struct stat localstat;
static char *TodayFile;
static struct stat todaystat;
static Alarm head;
static int *countDown;
static int countDownCt;
static XtCallbackRec callbacks[] = {
{NULL, NULL},
{NULL, NULL}
};
#define dprintf if (appResources.alarmScan) printf
#define MINUTES(hr, mn) ((hr)*60 + (mn))
#define argLD(N,V) { XtSetArg(args[nargs], N, V); nargs++; }
/*
* Local routines
*/
static void AlarmScan();
static void FreeAlarmList();
static void setCall();
static void beep();
static void AddAlarm();
static void DisplayAlarmWindow();
static void DestroyAlarm();
static void HoldAlarm();
static void AutoDestroy();
static void AlarmEvent();
static void ClockTick();
static void AlarmsOff();
static int readDataLine();
static String CreateCommand();
static int ReloadAlarms();
/*
* Initialise variables for the alarm mechanism
*/
void
InitAlarms()
{
register char *str;
register char *wk;
register ct;
register int *p;
char *XtMalloc();
if (!MyCalendar)
return;
if (appResources.alarms == False) {
dprintf("Alarms not enabled\n");
return;
}
dprintf("Alarms on\n");
/*
* Interpret the countDown string established
* by user - turn this into a vector
* countDown -> points to a vector of integers
* indicating the number of mins each alarm will be set
* countDownCt - the number of integers in the vector
*/
if (str = appResources.countdown) {
for (wk = str, ct = 0; *wk; wk++)
if (*wk == ',')
ct++;
ct++; /* no of things to store */
countDown = (int *) XtMalloc(sizeof(int) * (ct + 2));
p = countDown;
while (*str)
if (!isdigit(*str))
str++;
else
break;
while (*str) {
*p = 0;
ct = 0;
while (isdigit(*str))
ct = ct * 10 + *str++ - '0';
*p++ = ct;
countDownCt++;
while (*str && !isdigit(*str))
str++;
}
}
if (appResources.update)
ClockTick(0, 0);
else
AlarmFilePoll(0);
}
/*
* ClockTick is polled every minute (update) to see if the data file has
* altered - if so then a new data list is built
*/
static void
ClockTick(client_data, id)
caddr_t client_data;
XtIntervalId *id;
{
long secs;
time_t ti;
struct tm *tm;
ti = time(0);
tm = localtime(&ti);
dprintf("ClockTick %d:%02d:%02d\n", tm->tm_hour, tm->tm_min, tm->tm_sec);
secs = ClockSync(tm, appResources.update);
(void) XtAppAddTimeOut(appContext, secs * 1000,
(XtTimerCallbackProc) ClockTick,
(caddr_t) NULL);
AlarmFilePoll(tm);
MemoPoll();
}
void
AlarmFilePoll(tm)
struct tm *tm;
{
time_t ti;
int mnow;
int files, changed;
struct stat oldstat;
char *home;
char buf[256];
Alarm *old;
if (appResources.alarms == False)
return;
if (tm == NULL) {
ti = time(0);
tm = localtime(&ti);
}
/*
* Create the name of the data file in a cache to save energy
*/
if (LocalMapStemMade != tm->tm_mday) {
LocalMapStemMade = tm->tm_mday;
if (appResources.calCompat == False) {
(void) sprintf(buf, "%s/xy%d/xc%d%s%d",
MapStem,
tm->tm_year + 1900,
tm->tm_mday,
appResources.smon[tm->tm_mon],
tm->tm_year + 1900);
} else {
(void) sprintf(buf, "%s/xc%d%s%d",
MapStem,
tm->tm_mday,
appResources.smon[tm->tm_mon],
tm->tm_year + 1900);
}
if (LocalMapStem)
XtFree(LocalMapStem);
LocalMapStem = XtNewString(buf);
dprintf("Todays Daily Filename = %s\n", LocalMapStem);
if (TodayFile)
XtFree(TodayFile);
TodayFile = XtNewString(MakeWeeklyName(tm->tm_wday));
memset(&localstat, '\0', sizeof (struct stat));
memset(&todaystat, '\0', sizeof (struct stat));
}
files = 0;
changed = 0;
/*
* check for file existence
*/
if (access(LocalMapStem, F_OK) == 0) {
files = 1;
oldstat = localstat;
(void) stat(LocalMapStem, &localstat);
if (oldstat.st_mtime != localstat.st_mtime ||
oldstat.st_ctime != localstat.st_ctime)
changed = 1;
}
if (access(TodayFile, F_OK) == 0) {
files |= 2;
oldstat = todaystat;
(void) stat(TodayFile, &todaystat);
if (oldstat.st_mtime != todaystat.st_mtime ||
oldstat.st_ctime != todaystat.st_ctime)
changed |= 2;
}
old = NULL;
if (changed) {
old = head.next;
head.next = NULL;
}
if (files) {
if (changed) {
mnow = MINUTES(tm->tm_hour, tm->tm_min);
if (files & 1)
AlarmScan(LocalMapStem, tm, mnow);
if (files & 2)
AlarmScan(TodayFile, tm, mnow);
/* check on any extant alarm */
if (ReloadAlarms(old, mnow))
AlarmsOff();
if (appResources.interval_id == 0 && head.next)
setCall();
}
} else
dprintf("No files to scan\n");
if (old)
FreeAlarmList(old);
UpdateMemo();
}
static int
ReloadAlarms(old, mnow)
Alarm *old;
int mnow;
{
Alarm *prev;
dprintf("Checking old alarm details\n");
if (head.next == NULL) {
if (old) {
dprintf("No new alarms, stop old running\n");
return 1;
}
}
else if (head.next->alarm_mm <= mnow &&
(old == NULL ||
old->alarm_mm > head.next->alarm_mm)) {
/*
* this looks different but let's be careful
* if the entries on the new list are earlier
* than those on the old - then we have
* serviced those requests and we need to
* ensure that we don't fire them again
*/
while (head.next && head.next->alarm_mm <= mnow &&
(old == NULL ||
old->alarm_mm > head.next->alarm_mm)) {
dprintf("Discard alarm\n");
XtFree(head.next->alarm);
XtFree(head.next->what);
prev = head.next;
head.next = prev->next;
XtFree((char *)prev);
}
return (ReloadAlarms(old, mnow));
}
else if (old && old->alarm_mm != head.next->alarm_mm) {
dprintf("First new alarm differs from old, stop old alarm\n");
dprintf("Old: %d %s %s\n", old->alarm_mm, old->alarm, old->what);
dprintf("New: %d %s %s\n", head.next->alarm_mm, head.next->alarm, head.next->what);
return 1;
}
return 0;
}
static void
AlarmScan(file, tm, mnow)
String file;
struct tm *tm;
int mnow;
{
FILE *fp;
char hrstr[16];
char remline[256];
char *rem;
int hr, mn;
Boolean isAction;
dprintf("Scanning data file %s\n", file);
if ((fp = fopen(file, "r")) == NULL) {
fprintf(stderr, "Unexpected failure to open: %s\n", file);
exit(1);
}
while (readDataLine(fp, &hr, &mn, hrstr, remline)) {
/* see if we have an action string to do */
isAction = False;
rem = remline;
if (*rem == '!' || strncmp(remline, "%cron", 5) == 0) {
if (appResources.execalarms == False)
continue;
isAction = True;
if (*rem == '!')
rem++;
else rem += 5;
while (isspace(*rem))
rem++;
if (*rem == '\0')
continue;
}
AddAlarm(mnow, isAction, hr, mn, hrstr, rem);
}
(void) fclose(fp);
}
/*
* The idea here is to generate a sorted event list - one element for each
* event. We will discard anything that has already happened
*/
static void
AddAlarm(mnow, exec, hr, mn, hrstr, rem)
int mnow;
Boolean exec;
int hr;
int mn;
char *hrstr;
char *rem;
{
Alarm *al, *prev, *new;
char *XtMalloc();
int al_hr, al_mn, mm;
int loop;
int zero = 0;
int *p;
if (exec || countDownCt == 0) {
loop = 1;
p = &zero;
} else {
loop = countDownCt;
p = countDown;
}
for (; loop--; p++) {
al_hr = hr;
al_mn = mn;
if (*p) {
al_mn -= *p;
if (al_mn < 0) {
al_mn += 60;
al_hr--;
if (al_hr < 0)
continue;
}
}
if ((mm = MINUTES(al_hr, al_mn)) < mnow)
continue;
new = (Alarm *) XtMalloc(sizeof(Alarm));
new->alarm = XtNewString(hrstr);
new->what = XtNewString(rem);
new->alarm_mm = mm;
new->alarm_state = *p;
new->isAction = exec;
new->next = NULL;
/* now insert into correct place in List */
if (head.next == NULL) {
head.next = new;
dprintf("%s - %s; alarm at %02d:%02d\n",
hrstr, rem, al_hr, al_mn);
} else {
for (prev = &head, al = head.next; al; prev = al, al = prev->next)
if (mm < al->alarm_mm)
break;
prev->next = new;
new->next = al;
dprintf("%s - %s; alarm at %02d:%02d\n",
hrstr, rem, al_hr, al_mn);
}
}
}
/*
* read a line looking for a time spec and some data
* return 1 if found
* return 0 at end
* Time spec is: hhmm hmm
* hh:mm hh.mm
* h:mm h.mm
* all above may be optionally followed by:
* A a AM am Am aM P p PM pm Pm pM
* the string is terminated by a space or a tab
*/
static int
readDataLine(fin, hrp, minp, timestr, remline)
FILE *fin;
int *hrp;
int *minp;
char *timestr;
char *remline;
{
register enum readState {
Ignore, Hr1, Hr2, HrSep,
Mn1, Mn2, AmPm, LoseM,
LookSp, LoseSp, Store, AllDone
} state;
register int c = 0;
int hr = 0, mn = 0;
char *destp;
Boolean foundampm = False;
if (feof(fin))
return 0;
state = Hr1;
while (state != AllDone) {
if ((c = getc(fin)) == EOF) {
if (state == Store)
break;
return 0;
}
switch (state) {
case Ignore:
if (c == '\n')
state = Hr1;
continue;
case Hr1:
destp = timestr;
if (isdigit(c)) {
hr = c - '0';
mn = 0;
destp = timestr;
*destp = '\0';
state = Hr2;
break;
}
state = (c == '\n' ? Hr1 : Ignore);
continue;
case Hr2:
if (isdigit(c)) {
hr = hr * 10 + c - '0';
state = HrSep;
break;
}
/* Falls through to .. */
case HrSep:
if (c == ':' || c == '.') {
state = Mn1;
break;
}
/* Falls through to .. */
case Mn1:
if (isdigit(c)) {
mn = c - '0';
state = Mn2;
break;
}
/* Falls through to .. */
case Mn2:
if (isdigit(c)) {
mn = mn * 10 + c - '0';
state = AmPm;
break;
} else if (state == Mn2) {
state = (c == '\n' ? Hr1 : Ignore);
continue;
}
/* Falls through to .. */
case AmPm:
if (c == 'a' || c == 'A') {
if (hr == 12)
hr = 0;
foundampm = True;
state = LoseM;
break;
} else if (c == 'p' || c == 'P') {
if (hr < 12)
hr += 12;
foundampm = True;
state = LoseM;
break;
}
/* Falls through to .. */
case LoseM:
if (c == 'M' || c == 'm') {
state = LookSp;
break;
}
/* Falls through to .. */
case LookSp:
if (c == ' ' || c == '\t') {
state = LoseSp;
if (hr >= 24 || mn >= 60)
state = Ignore;
destp = remline;
*destp = '\0';
continue;
} else {
state = (c == '\n' ? Hr1 : Ignore);
continue;
}
break;
case LoseSp:
if (c == ' ' || c == '\t')
continue;
state = Store;
/* Falls through to .. */
case Store:
if (c == '\n') {
state = AllDone;
continue;
}
break;
}
*destp++ = c;
*destp = '\0';
}
/*
* idea from Marc Pawliger
* if you don't give an am or pm, then hours from 0 to minAlarmWarp
* is treated as a pm time
*/
if (appResources.alarmWarp == True &&
hr <= appResources.minAlarmWarp &&
appResources.minAlarmWarp < 12 &&
foundampm == False)
hr += 12;
*hrp = hr;
*minp = mn;
return 1;
}
/*
* set up the timeout for the next event
*/
static void
setCall()
{
time_t ti;
long mnow;
struct tm *tm;
Alarm *sc;
int togo;
ti = time(0);
tm = localtime(&ti);
mnow = MINUTES(tm->tm_hour, tm->tm_min);
for (sc = head.next; sc; sc = sc->next) {
togo = sc->alarm_mm - mnow;
if (togo == 0)
{ AlarmEvent(1, 0); /* don't miss any current alarms */
sc = &head;
continue;
}
if (togo < 0)
continue;
appResources.interval_id = XtAppAddTimeOut(appContext,
togo * 60 * 1000 - tm->tm_sec * 1000,
(XtTimerCallbackProc) AlarmEvent, (caddr_t) NULL);
dprintf("Alarm in %d mins (less %d secs)\n", togo, tm->tm_sec);
break;
}
}
static void
AlarmEvent(client_data, id)
caddr_t client_data;
XtIntervalId *id;
{
int tnow;
long ti;
struct tm *tm;
Alarm *al, *action, *actionend;
String cmd;
appResources.interval_id = 0;
ti = time(0);
tm = localtime(&ti);
tnow = MINUTES(tm->tm_hour, tm->tm_min);
dprintf("Alarm %d:%02d:%02d\n", tm->tm_hour, tm->tm_min, tm->tm_sec);
/*
* Look for alarms that have fired and remove them
* from the list
*/
actionend = NULL;
for (al = head.next; al; al = al->next) {
if (al->alarm_mm <= tnow)
actionend = al;
else break;
}
if (actionend) {
al = head.next;
head.next = actionend->next;
actionend->next = NULL;
/*
* now process the list
*/
while (al) {
if (tnow == al->alarm_mm) {
if (appResources.cmd != NULL) {
cmd = CreateCommand(appResources.cmd, al->what);
system(cmd);
XtFree(cmd);
}
if (al->isAction == False) {
DisplayAlarmWindow(al->alarm_state, al->alarm, al->what);
beep(); /* notify the user */
} else {
cmd = CreateCommand(al->what, NULL);
system(cmd);
XtFree(cmd);
}
}
actionend = al->next;
XtFree(al->alarm);
XtFree(al->what);
XtFree((char *) al);
al = actionend;
}
}
if (client_data == NULL)
setCall();
}
static String
CreateCommand(cmd, arg)
String cmd;
String arg;
{
String buf;
char *s, *d;
char *fmt;
int cmdlen;
int arglen;
cmdlen = strlen(cmd);
arglen = arg ? strlen(arg) : 0;
buf = XtMalloc(cmdlen + arglen + 200);
if (arglen == 0)
fmt = "%s&";
else fmt = "%s '";
(void) sprintf(buf, fmt, cmd);
/*
* copy the arguments worrying about any embedded quote
*/
#define QUOTE '\''
#define BACKSLASH '\\'
if (arglen) {
d = buf + strlen(buf);
for(s = arg; *s; s++) {
if (*s == QUOTE) {
*d++ = QUOTE;
*d++ = BACKSLASH;
*d++ = QUOTE;
}
*d++ = *s;
}
*d++ = QUOTE;
*d++ = '&';
*d++ = '\0';
}
return buf;
}
static void
beep()
{
register Display *dpy = XtDisplay(toplevel);
int i;
for (i = 0; i < appResources.nbeeps; i++) {
XBell(dpy, appResources.volume);
sleep(1);
}
}
static void
FreeAlarmList(al)
register Alarm *al;
{
register Alarm *nx;
for (; al; al = nx) {
nx = al->next;
XtFree(al->alarm);
XtFree(al->what);
XtFree((char *) al);
}
}
static void
AlarmsOff()
{
if (appResources.interval_id) {
XtRemoveTimeOut(appResources.interval_id);
appResources.interval_id = 0;
}
}
typedef struct {
Widget sa_top;
XtIntervalId sa_id;
} AlarmStatus;
static void
DisplayAlarmWindow(tleft, str1, str2)
int tleft;
String str1, str2;
{
Widget shell, form, title, aq, ah;
Arg args[10];
Cardinal nargs;
char *fmt;
char buf[255];
AlarmStatus *als;
/*
* making the top level shell the override widget class causes it to
* popup without window manager interaction or window manager
* handles. this also means that it pops on the foreground of an
* xlocked terminal and is not resizable by the window manager. If
* any one finds that to be desirable behavior, then change the
* transient class below to override.
*
* For now transient class is much better behaved
*/
nargs = 0;
argLD(XtNallowShellResize, True);
argLD(XtNinput, True);
argLD(XtNsaveUnder, TRUE);
shell = XtCreatePopupShell("alarm", transientShellWidgetClass,
toplevel, args, nargs);
form = XtCreateManagedWidget("alarmPanel", panedWidgetClass,
shell, NULL, 0);
/*
* create alarm status save area
*/
als = (AlarmStatus *) XtMalloc(sizeof(AlarmStatus));
als->sa_top = shell;
als->sa_id = (XtIntervalId) NULL;
if (appResources.autoquit) {
als->sa_id = XtAppAddTimeOut(appContext,
appResources.autoquit * 1000,
AutoDestroy, (caddr_t) als);
}
nargs = 0;
argLD(XtNshowGrip, False);
argLD(XtNdefaultDistance, 2);
title = XtCreateManagedWidget("alarmForm", formWidgetClass,
form, args, nargs);
/*
* Exit button Take "Quit" from resources
*/
callbacks[0].callback = DestroyAlarm;
callbacks[0].closure = (caddr_t) als;
nargs = 0;
argLD(XtNcallback, callbacks);
argLD(XtNfromHoriz, NULL);
argLD(XtNleft, XtChainLeft);
argLD(XtNright, XtChainLeft);
aq = XtCreateManagedWidget("alarmQuit", commandWidgetClass,
title, args, nargs);
/*
* Hold button Take "Hold" from resources
*/
callbacks[0].callback = HoldAlarm;
callbacks[0].closure = (caddr_t) als;
nargs = 0;
argLD(XtNcallback, callbacks);
argLD(XtNfromHoriz, aq);
if (!appResources.autoquit) {
argLD(XtNsensitive, False);
}
argLD(XtNleft, XtChainLeft);
argLD(XtNright, XtChainLeft);
ah = XtCreateManagedWidget("alarmHold", commandWidgetClass,
title, args, nargs);
if (tleft == 0)
fmt = appResources.alarmnow;
else
fmt = appResources.alarmleft;
if (fmt && *fmt) {
nargs = 0;
argLD(XtNfromHoriz, ah);
argLD(XtNleft, XtChainLeft);
argLD(XtNright, XtChainLeft);
argLD(XtNborderWidth, 0);
argLD(XtNfromVert, NULL);
argLD(XtNvertDistance, 3);
(void) sprintf(buf, fmt, tleft);
argLD(XtNlabel, buf);
(void) XtCreateManagedWidget("alarmTitle", labelWidgetClass, title, args, nargs);
}
/*
* Now the text which is the remainder of the panel
*/
(void) sprintf(buf, "%s\n%s\n", str1, str2);
nargs = 0;
argLD(XtNshowGrip, False);
argLD(XtNstring, buf);
argLD(XtNdisplayCaret, False);
(void) XtCreateManagedWidget("alarmText", asciiTextWidgetClass,
form, args, nargs);
XtPopup(shell, XtGrabNone);
}
/* ARGSUSED */
static void
DestroyAlarm(w, als, call_data)
Widget w;
AlarmStatus *als;
caddr_t call_data;
{
if (als->sa_id)
XtRemoveTimeOut(als->sa_id);
AutoDestroy(als, NULL);
}
/* ARGSUSED */
static void
HoldAlarm(w, als, call_data)
Widget w;
AlarmStatus *als;
caddr_t call_data;
{
if (als->sa_id)
XtRemoveTimeOut(als->sa_id);
XtSetSensitive(w, FALSE);
}
/* ARGSUSED */
static void
AutoDestroy(als, id)
AlarmStatus *als;
XtIntervalId *id;
{
XtDestroyWidget(als->sa_top);
XtFree((char *) als);
}
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