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vdr/timers.c

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/*
* timers.c: Timer handling
*
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: timers.c 1.8 2003/12/27 13:10:04 kls Exp $
*/
#include "timers.h"
#include <ctype.h>
#include "channels.h"
#include "i18n.h"
// IMPORTANT NOTE: in the 'sscanf()' calls there is a blank after the '%d'
// format characters in order to allow any number of blanks after a numeric
// value!
// -- cTimer -----------------------------------------------------------------
char *cTimer::buffer = NULL;
cTimer::cTimer(bool Instant, bool Pause)
{
startTime = stopTime = 0;
recording = pending = false;
active = Instant ? taActInst : taInactive;
channel = Channels.GetByNumber(cDevice::CurrentChannel());
time_t t = time(NULL);
struct tm tm_r;
struct tm *now = localtime_r(&t, &tm_r);
day = now->tm_mday;
start = now->tm_hour * 100 + now->tm_min;
stop = now->tm_hour * 60 + now->tm_min + Setup.InstantRecordTime;
stop = (stop / 60) * 100 + (stop % 60);
if (stop >= 2400)
stop -= 2400;
priority = Pause ? Setup.PausePriority : Setup.DefaultPriority;
lifetime = Pause ? Setup.PauseLifetime : Setup.DefaultLifetime;
*file = 0;
firstday = 0;
summary = NULL;
if (Instant && channel)
snprintf(file, sizeof(file), "%s%s", Setup.MarkInstantRecord ? "@" : "", *Setup.NameInstantRecord ? Setup.NameInstantRecord : channel->Name());
}
cTimer::cTimer(const cEvent *Event)
{
startTime = stopTime = 0;
recording = pending = false;
active = true;
channel = Channels.GetByChannelID(Event->ChannelID(), true);
time_t tstart = Event->StartTime();
time_t tstop = tstart + Event->Duration() + Setup.MarginStop * 60;
tstart -= Setup.MarginStart * 60;
struct tm tm_r;
struct tm *time = localtime_r(&tstart, &tm_r);
day = time->tm_mday;
start = time->tm_hour * 100 + time->tm_min;
time = localtime_r(&tstop, &tm_r);
stop = time->tm_hour * 100 + time->tm_min;
if (stop >= 2400)
stop -= 2400;
priority = Setup.DefaultPriority;
lifetime = Setup.DefaultLifetime;
*file = 0;
const char *Title = Event->Title();
if (!isempty(Title))
strn0cpy(file, Event->Title(), sizeof(file));
firstday = 0;
summary = NULL;
}
cTimer::~cTimer()
{
free(summary);
}
cTimer& cTimer::operator= (const cTimer &Timer)
{
memcpy(this, &Timer, sizeof(*this));
if (summary)
summary = strdup(summary);
return *this;
}
bool cTimer::operator< (const cListObject &ListObject)
{
cTimer *ti = (cTimer *)&ListObject;
time_t t1 = StartTime();
time_t t2 = ti->StartTime();
return t1 < t2 || (t1 == t2 && priority > ti->priority);
}
const char *cTimer::ToText(bool UseChannelID)
{
free(buffer);
strreplace(file, ':', '|');
strreplace(summary, '\n', '|');
asprintf(&buffer, "%d:%s:%s:%04d:%04d:%d:%d:%s:%s\n", active, UseChannelID ? Channel()->GetChannelID().ToString() : itoa(Channel()->Number()), PrintDay(day, firstday), start, stop, priority, lifetime, file, summary ? summary : "");
strreplace(summary, '|', '\n');
strreplace(file, '|', ':');
return buffer;
}
int cTimer::TimeToInt(int t)
{
return (t / 100 * 60 + t % 100) * 60;
}
int cTimer::ParseDay(const char *s, time_t *FirstDay)
{
char *tail;
int d = strtol(s, &tail, 10);
if (FirstDay)
*FirstDay = 0;
if (tail && *tail) {
d = 0;
if (tail == s) {
const char *first = strchr(s, '@');
int l = first ? first - s : strlen(s);
if (l == 7) {
for (const char *p = s + 6; p >= s; p--) {
d <<= 1;
d |= (*p != '-');
}
d |= 0x80000000;
}
if (FirstDay && first) {
++first;
if (strlen(first) == 10) {
struct tm tm_r;
if (3 == sscanf(first, "%d-%d-%d", &tm_r.tm_year, &tm_r.tm_mon, &tm_r.tm_mday)) {
tm_r.tm_year -= 1900;
tm_r.tm_mon--;
tm_r.tm_hour = tm_r.tm_min = tm_r.tm_sec = 0;
tm_r.tm_isdst = -1; // makes sure mktime() will determine the correct DST setting
*FirstDay = mktime(&tm_r);
}
}
else
d = 0;
}
}
}
else if (d < 1 || d > 31)
d = 0;
return d;
}
const char *cTimer::PrintDay(int d, time_t FirstDay)
{
#define DAYBUFFERSIZE 32
static char buffer[DAYBUFFERSIZE];
if ((d & 0x80000000) != 0) {
char *b = buffer;
const char *w = tr("MTWTFSS");
while (*w) {
*b++ = (d & 1) ? *w : '-';
d >>= 1;
w++;
}
if (FirstDay) {
struct tm tm_r;
localtime_r(&FirstDay, &tm_r);
b += strftime(b, DAYBUFFERSIZE - (b - buffer), "@%Y-%m-%d", &tm_r);
}
*b = 0;
}
else
sprintf(buffer, "%d", d);
return buffer;
}
const char *cTimer::PrintFirstDay(void)
{
if (firstday) {
const char *s = PrintDay(day, firstday);
if (strlen(s) == 18)
return s + 8;
}
return ""; // not NULL, so the caller can always use the result
}
bool cTimer::Parse(const char *s)
{
char *channelbuffer = NULL;
char *daybuffer = NULL;
char *filebuffer = NULL;
free(summary);
summary = NULL;
//XXX Apparently sscanf() doesn't work correctly if the last %a argument
//XXX results in an empty string (this first occured when the EIT gathering
//XXX was put into a separate thread - don't know why this happens...
//XXX As a cure we copy the original string and add a blank.
//XXX If anybody can shed some light on why sscanf() failes here, I'd love
//XXX to hear about that!
char *s2 = NULL;
int l2 = strlen(s);
while (l2 > 0 && isspace(s[l2 - 1]))
l2--;
if (s[l2 - 1] == ':') {
s2 = MALLOC(char, l2 + 3);
strcat(strn0cpy(s2, s, l2 + 1), " \n");
s = s2;
}
bool result = false;
if (8 <= sscanf(s, "%d :%a[^:]:%a[^:]:%d :%d :%d :%d :%a[^:\n]:%a[^\n]", &active, &channelbuffer, &daybuffer, &start, &stop, &priority, &lifetime, &filebuffer, &summary)) {
if (summary && !*skipspace(summary)) {
free(summary);
summary = NULL;
}
//TODO add more plausibility checks
day = ParseDay(daybuffer, &firstday);
result = day != 0;
strn0cpy(file, filebuffer, MaxFileName);
strreplace(file, '|', ':');
strreplace(summary, '|', '\n');
if (isnumber(channelbuffer))
channel = Channels.GetByNumber(atoi(channelbuffer));
else
channel = Channels.GetByChannelID(tChannelID::FromString(channelbuffer), true);
if (!channel) {
esyslog("ERROR: channel %s not defined", channelbuffer);
result = false;
}
}
free(channelbuffer);
free(daybuffer);
free(filebuffer);
free(s2);
return result;
}
bool cTimer::Save(FILE *f)
{
return fprintf(f, ToText(true)) > 0;
}
bool cTimer::IsSingleEvent(void)
{
return (day & 0x80000000) == 0;
}
int cTimer::GetMDay(time_t t)
{
struct tm tm_r;
return localtime_r(&t, &tm_r)->tm_mday;
}
int cTimer::GetWDay(time_t t)
{
struct tm tm_r;
int weekday = localtime_r(&t, &tm_r)->tm_wday;
return weekday == 0 ? 6 : weekday - 1; // we start with monday==0!
}
bool cTimer::DayMatches(time_t t)
{
return IsSingleEvent() ? GetMDay(t) == day : (day & (1 << GetWDay(t))) != 0;
}
time_t cTimer::IncDay(time_t t, int Days)
{
struct tm tm_r;
tm tm = *localtime_r(&t, &tm_r);
tm.tm_mday += Days; // now tm_mday may be out of its valid range
int h = tm.tm_hour; // save original hour to compensate for DST change
tm.tm_isdst = -1; // makes sure mktime() will determine the correct DST setting
t = mktime(&tm); // normalize all values
tm.tm_hour = h; // compensate for DST change
return mktime(&tm); // calculate final result
}
time_t cTimer::SetTime(time_t t, int SecondsFromMidnight)
{
struct tm tm_r;
tm tm = *localtime_r(&t, &tm_r);
tm.tm_hour = SecondsFromMidnight / 3600;
tm.tm_min = (SecondsFromMidnight % 3600) / 60;
tm.tm_sec = SecondsFromMidnight % 60;
tm.tm_isdst = -1; // makes sure mktime() will determine the correct DST setting
return mktime(&tm);
}
char *cTimer::SetFile(const char *File)
{
if (!isempty(File))
strn0cpy(file, File, sizeof(file));
return file;
}
bool cTimer::Matches(time_t t)
{
startTime = stopTime = 0;
if (t == 0)
t = time(NULL);
int begin = TimeToInt(start); // seconds from midnight
int length = TimeToInt(stop) - begin;
if (length < 0)
length += SECSINDAY;
int DaysToCheck = IsSingleEvent() ? 61 : 7; // 61 to handle months with 31/30/31
for (int i = -1; i <= DaysToCheck; i++) {
time_t t0 = IncDay(t, i);
if (DayMatches(t0)) {
time_t a = SetTime(t0, begin);
time_t b = a + length;
if ((!firstday || a >= firstday) && t <= b) {
startTime = a;
stopTime = b;
break;
}
}
}
if (!startTime)
startTime = firstday; // just to have something that's more than a week in the future
else if (t > startTime || t > firstday + SECSINDAY + 3600) // +3600 in case of DST change
firstday = 0;
return active && startTime <= t && t < stopTime; // must stop *before* stopTime to allow adjacent timers
}
time_t cTimer::StartTime(void)
{
if (!startTime)
Matches();
return startTime;
}
time_t cTimer::StopTime(void)
{
if (!stopTime)
Matches();
return stopTime;
}
void cTimer::SetRecording(bool Recording)
{
recording = Recording;
isyslog("timer %d (%d %04d-%04d '%s') %s", Index() + 1, Channel()->Number(), start, stop, file, recording ? "start" : "stop");
}
void cTimer::SetPending(bool Pending)
{
pending = Pending;
}
void cTimer::SetActive(int Active)
{
active = Active;
}
void cTimer::Skip(void)
{
firstday = IncDay(SetTime(StartTime(), 0), 1);
}
void cTimer::OnOff(void)
{
if (IsSingleEvent())
active = !active;
else if (firstday) {
firstday = 0;
active = false;
}
else if (active)
Skip();
else
active = true;
Matches(); // refresh start and end time
}
// -- cTimers ----------------------------------------------------------------
cTimers Timers;
cTimer *cTimers::GetTimer(cTimer *Timer)
{
for (cTimer *ti = First(); ti; ti = Next(ti)) {
if (ti->Channel() == Timer->Channel() && ti->Day() == Timer->Day() && ti->Start() == Timer->Start() && ti->Stop() == Timer->Stop())
return ti;
}
return NULL;
}
cTimer *cTimers::GetMatch(time_t t)
{
cTimer *t0 = NULL;
for (cTimer *ti = First(); ti; ti = Next(ti)) {
if (!ti->Recording() && ti->Matches(t)) {
if (!t0 || ti->Priority() > t0->Priority())
t0 = ti;
}
}
return t0;
}
cTimer *cTimers::GetNextActiveTimer(void)
{
cTimer *t0 = NULL;
for (cTimer *ti = First(); ti; ti = Next(ti)) {
if (ti->Active() && (!t0 || *ti < *t0))
t0 = ti;
}
return t0;
}