datebookdb.cpp

Trolltech公司发布的图形界面操作系统。可在qt-embedded-2.3.7平台上编译为嵌入式图形界面操作系统。

	Event e;

	i += 7;

	while( 1 ) {
	    while ( i < len && (dt[i] == ' ' || dt[i] == '\n' || dt[i] == '\r') )
		++i;
	    if ( i >= len-2 || (dt[i] == '/' && dt[i+1] == '>') )
		break;
	    // we have another attribute, read it.
	    int j = i;
	    while ( j < len && dt[j] != '=' )
		++j;
	    char *attr = dt+i;
	    dt[j] = '\0';
	    i = ++j; // skip =
	    while ( i < len && dt[i] != '"' )
		++i;
	    j = ++i;
	    bool haveAmp = FALSE;
	    bool haveUtf = FALSE;
	    while ( j < len && dt[j] != '"' ) {
		if ( dt[j] == '&' )
		    haveAmp = TRUE;
		if ( ((unsigned char)dt[j]) > 0x7f )
		    haveUtf = TRUE;
		++j;
	    }

	    if ( i == j ) {
		// leave out empty attributes
		i = j + 1;
		continue;
	    }

	    QString value = haveUtf ? QString::fromUtf8( dt+i, j-i )
			    : QString::fromLatin1( dt+i, j-i );
	    if ( haveAmp )
		value = Qtopia::plainString( value );
	    i = j + 1;

	    //qDebug("attr='%s' value='%s'", attr.data(), value.latin1() );
	    int * find = dict[ attr ];
#if 1
	    if ( !find ) {
		// custom field
		e.setCustomField(attr, value);
		continue;
	    }

	    switch( *find ) {
	    case FDescription:
		e.setDescription( value );
		break;
	    case FLocation:
		e.setLocation( value );
		break;
	    case FCategories:
		e.setCategories( Qtopia::Record::idsFromString( value ) );
		break;
	    case FUid:
		e.setUid( value.toInt() );
		break;
	    case FType:
		if ( value == "AllDay" )
		    e.setType( Event::AllDay );
		else
		    e.setType( Event::Normal );
		break;
	    case FAlarm:
		alarmTime = value.toInt();
		break;
	    case FSound:
		alarmSound = value == "loud" ? Event::Loud : Event::Silent; // No tr
		break;
		// recurrence stuff
	    case FRType:
		if ( value == "Daily" ) // No tr
		    rp.type = Event::Daily;
		else if ( value == "Weekly" ) // No tr
		    rp.type = Event::Weekly;
		else if ( value == "MonthlyDay" )
		    rp.type = Event::MonthlyDay;
		else if ( value == "MonthlyDate" )
		    rp.type = Event::MonthlyDate;
		else if ( value == "Yearly" ) // No tr
		    rp.type = Event::Yearly;
		else
		    rp.type = Event::NoRepeat;
		break;
	    case FRWeekdays:
		rp.days = value.toInt();
		break;
	    case FRPosition:
		rp.position = value.toInt();
		break;
	    case FRFreq:
		rp.frequency = value.toInt();
		break;
	    case FRHasEndDate:
		rp.hasEndDate = value.toInt();
		break;
		case FREndDate: {
		rp.endDateUTC = (time_t) value.toLong();
		break;
		}
		case FRStart: {
		e.setStart( (time_t) value.toLong() );
		break;
		}
		case FREnd: {
		e.setEnd( (time_t) value.toLong() );
		break;
		}
	    case FNote:
		e.setNotes( value );
		break;
	    case FCreated:
		rp.createTime = value.toInt();
		break;
	    case FAction:
		currentAction = value.toInt();
		break;
	    case FActionKey:
		journalKey = value.toInt();
		break;
	    case FJournalOrigHadRepeat:
		origHadRepeat = value.toInt();
		break;
	    default:
		qDebug( "huh??? missing enum? -- attr.: %s", attr );
		break;
	    }
#endif
	}
	// "post processing" (dates, times, alarm, recurrence)
	// start date/time
	e.setRepeat( rp.type != Event::NoRepeat, rp );

	if ( alarmTime != -1 )
	    e.setAlarm( TRUE, alarmTime, alarmSound );

	// now do our action based on the current action...
	switch ( currentAction ) {
	case ACTION_ADD:
	    addJFEvent( e );
	    break;
	case ACTION_REMOVE:
	    removeJFEvent( e );
	    break;
	case ACTION_REPLACE:
	    // be a little bit careful,
	    // in case of a messed up journal...
	    if ( journalKey > -1 && origHadRepeat > -1 ) {
		// get the original from proper list...
		if ( origHadRepeat )
		    removeJFEvent( *(repeatEvents.at(journalKey)) );
		else
		    removeJFEvent( *(eventList.at(journalKey)) );
		addJFEvent( e );
	    }
	    break;
	default:
	    break;
	}
    }
    f.close();
}

void DateBookDB::init()
{
    d = new DateBookDBPrivate;
    d->clean = false;
    QString str = dateBookFilename();
    if ( str.isNull() ) {
	QMessageBox::warning( 0, qApp->translate( "DateBookDB", "Out of Space"),
			      qApp->translate( "DateBookDB", 
					       "Unable to create start up files\n"
					       "Please free up some space\n"
					       "before entering data") );
    }
    // continuing along, we call this datebook filename again,
    // because they may fix it before continuing, though it seems
    // pretty unlikely...
    loadFile( dateBookFilename() );

    if ( QFile::exists( dateBookJournalFile() ) ) {
	// merge the journal
	loadFile( dateBookJournalFile() );
	// save in our changes and remove the journal...
	save();
    }
    d->clean = true;
}

bool DateBookDB::save()
{
    if ( d->clean == true )
	return true;
    QValueListIterator<Event> it;
    int total_written;
    QString strFileNew = dateBookFilename() + ".new";

    QFile f( strFileNew );
    if ( !f.open( IO_WriteOnly|IO_Raw ) )
        return FALSE;

    QString buf( "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" );
    buf += "<!DOCTYPE DATEBOOK><DATEBOOK>\n";
    buf += "<events>\n";
    QCString str = buf.utf8();
    total_written = f.writeBlock( str.data(), str.length() );
    if ( total_written != int(str.length()) ) {
	f.close();
	QFile::remove( strFileNew );
	return false;
    }

    for ( it = eventList.begin(); it != eventList.end(); ++it ) {
	buf = "<event"; // No tr
        (*it).save( buf );
        buf += " />\n";
	str = buf.utf8();
        total_written = f.writeBlock( str.data(), str.length() );
	if ( total_written != int(str.length()) ) {
	    f.close();
	    QFile::remove( strFileNew );
	    return false;
	}
    }
    for ( it = repeatEvents.begin(); it != repeatEvents.end(); ++it ) {
        buf = "<event"; // No tr
        (*it).save( buf );
        buf += " />\n";
	str = buf.utf8();
	total_written = f.writeBlock( str.data(), str.length() );
	if ( total_written != int(str.length()) ) {
	    f.close();
	    QFile::remove( strFileNew );
	    return false;
	}
    }
    buf = "</events>\n</DATEBOOK>\n";
    str = buf.utf8();
    total_written = f.writeBlock( str.data(), str.length() );
    if ( total_written != int(str.length()) ) {
	f.close();
	QFile::remove( strFileNew );
	return false;
    }
    f.close();

    // now rename... I like to use the systemcall
    QDir dir;
#ifdef Q_OS_WIN32
    QFile::remove( dateBookFilename() );
#endif
    if ( dir.rename( strFileNew, dateBookFilename() ) == FALSE ) {
	qWarning( "problem renaming file %s to %s errno %d",
		  strFileNew.latin1(), dateBookFilename().latin1(), errno  );
	// remove the file, otherwise it will just stick around...
	QFile::remove( strFileNew );
    }

    // may as well remove the journal file...
    QFile::remove( dateBookJournalFile() );
    d->clean = true;
    return true;
}

void DateBookDB::reload()
{
    QValueList<Event>::Iterator it = eventList.begin();
    for ( ; it != eventList.end(); ++it ) {
	if ( (*it).hasAlarm() )
	    delEventAlarm( *it );
	if ( (*it).hasRepeat() )
	    removeRepeat( *it );
    }
    eventList.clear();
    repeatEvents.clear(); // should be a NOP
    init();
}

bool DateBookDB::removeRepeat( const Event &ev )
{
    time_t removeMe = ev.repeatPattern().createTime;
    QValueListIterator<Event> it;
    for ( it = repeatEvents.begin(); it != repeatEvents.end(); ++it ) {
	if ( removeMe == (*it).repeatPattern().createTime ) {
	    repeatEvents.remove( *it );
	    // best break, or we are going into undefined territory!
	    return TRUE;
	}
    }
    return FALSE;
}

bool DateBookDB::origRepeat( const Event &ev, Event &orig ) const
{
    time_t removeMe = ev.repeatPattern().createTime;
    QValueListConstIterator<Event> it;
    for ( it = repeatEvents.begin(); it != repeatEvents.end(); ++it ) {
	if ( removeMe == (*it).repeatPattern().createTime ) {
	    orig = (*it);
	    return TRUE;
	}
    }
    return FALSE;
}

void DateBookDB::saveJournalEntry( const Event &ev, journal_action action )
{
    saveJournalEntry( ev, action, -1, false );
}

bool DateBookDB::saveJournalEntry( const Event &evOld, journal_action action,
				   int key, bool origHadRepeat )
{
    bool status = false;
    Event ev = evOld;
    // write our log based on the action
    QFile f( dateBookJournalFile() );
    if ( !f.open( IO_WriteOnly|IO_Append ) )
        return false;
    QString buf = "<event"; // No tr
    ev.save( buf );
    buf += " action="; // No tr
    buf += "\"" + QString::number(action) + "\"";
    buf += " actionkey=\"" + QString::number(key) + "\"";
    buf += " actionorig=\"" + QString::number(origHadRepeat) +"\"";
    buf += " />\n";
    QString str = buf.utf8();
    status = ( f.writeBlock( str.data(), str.length() ) == int(str.length()) );
    f.close();
    return status;
}

QValueList<Event> DateBookDB::getRawRepeats() const
{
    return repeatEvents;
}

QValueList<Event> DateBookDB::getNonRepeatingEvents( const QDate &from,
						     const QDate &to ) const
{
    QValueListConstIterator<Event> it;
    QDateTime dtTmp, dtEnd;
    QValueList<Event> tmpList;
    for (it = eventList.begin(); it != eventList.end(); ++it ) {
        dtTmp = (*it).start(TRUE);
	dtEnd = (*it).end(TRUE);

        if ( dtTmp.date() >= from && dtTmp.date() <= to ) {
	    Event e = *it;
	    if ( dtTmp.date() != dtEnd.date() )
		e.setEnd( QDateTime(dtTmp.date(), QTime(23, 59, 0)) );
            tmpList.append( e );
	}
	// we must also check for end date information...
	if ( dtEnd.date() != dtTmp.date() && dtEnd.date() >= from ) {
	    QDateTime dt = dtTmp.addDays( 1 );
	    dt.setTime( QTime(0, 0, 0) );
	    QDateTime dtStop;
	    if ( dtEnd > to ) {
		dtStop = to;
	    } else
		dtStop = dtEnd;
	    while ( dt <= dtStop ) {
		Event ev = *it;
		if ( dt >= from ) {
		    ev.setStart( QDateTime(dt.date(), QTime(0, 0, 0)) );
		    if ( dt.date() == dtEnd.date() )
			ev.setEnd( QDateTime(dt.date(), dtEnd.time()) );
		    else
			ev.setEnd( QDateTime(dt.date(), QTime(23, 59, 0)) );
		    tmpList.append( ev );
		}
		dt = dt.addDays( 1 );
	    }
	}
    }
    return tmpList;
}