[squirrelmail.git] / functions / date.php

<?php

/**
 * date.php
 *
 * Takes a date and parses it into a usable format.  The form that a
 * date SHOULD arrive in is:
 *       <Tue,> 29 Jun 1999 09:52:11 -0500 (EDT)
 * (as specified in RFC 822) -- 'Tue' is optional
 *
 * @copyright 1999-2018 The SquirrelMail Project Team
 * @license http://opensource.org/licenses/gpl-license.php GNU Public License
 * @version $Id$
 * @package squirrelmail
 * @subpackage date
 */

/**
 * dependency information
 * - none
 */

/**
 * Corrects a time stamp to be the local time.
 *
 * @param int stamp the timestamp to adjust
 * @param string tzc the timezone correction
 * @return int the corrected timestamp
 */
function getGMTSeconds($stamp, $tzc) {
    /* date couldn't be parsed */
    if ($stamp == -1) {
        return -1;
    }
    /* timezone correction, expressed as `shhmm' */
    switch($tzc)
    {
        case 'Pacific':
        case 'PST':
            $tzc = '-0800';
            break;
        case 'Mountain':
        case 'MST':
        case 'PDT':
            $tzc = '-0700';
            break;
        case 'Central':
        case 'CST':
        case 'MDT':
            $tzc = '-0600';
            break;
        case 'Eastern':
        case 'EST':
        case 'CDT':
            $tzc = '-0500';
            break;
        case 'EDT':
            $tzc = '-0400';
            break;
        case 'GMT':
            $tzc = '+0000';
            break;
        case 'BST':
        case 'MET':
        case 'CET':
            $tzc = '+0100';
            break;
        case 'EET':
        case 'IST':
        case 'MET DST':
        case 'METDST':
	case 'MEST':
	case 'CEST':
            $tzc = '+0200';
            break;
        case 'HKT':
            $tzc = '+0800';
            break;
        case 'JST':
        case 'KST':
            $tzc = '+0900';
            break;
    }
    $neg = false;
    if (substr($tzc, 0, 1) == '-') {
        $neg = true;
    } else if (substr($tzc, 0, 1) != '+') {
        $tzc = '+'.$tzc;
    }
    $hh = substr($tzc,1,2);
    $mm = substr($tzc,3,2);
    $iTzc = ($hh * 60 + $mm) * 60;
    if ($neg) $iTzc = -1 * (int) $iTzc;
    /* stamp in gmt */
    $stamp -= $iTzc;
    /* now find what the server is at */
    $current = date('Z', time());
    /* stamp in local timezone */
    $stamp += $current;

    return $stamp;
}

/**
 * Returns the (localized) string for a given day number.
 * Switch system has been intentionaly chosen for the
 * internationalization of month and day names. The reason
 * is to make sure that _("") strings will go into the
 * main po.
 *
 * @param int day_number the day number
 * @return string the day in human readable form
 */
function getDayName( $day_number ) {

    switch( $day_number ) {
    case 0:
        $ret = _("Sunday");
        break;
    case 1:
        $ret = _("Monday");
        break;
    case 2:
        $ret = _("Tuesday");
        break;
    case 3:
        $ret = _("Wednesday");
        break;
    case 4:
        $ret = _("Thursday");
        break;
    case 5:
        $ret = _("Friday");
        break;
    case 6:
        $ret = _("Saturday");
        break;
    default:
        $ret = '';
    }
    return( $ret );
}

/**
 * Like getDayName, but returns the short form
 * @param int day_number the day number
 * @return string the day in short human readable form
 */
function getDayAbrv( $day_number ) {

    switch( $day_number ) {
    case 0:
        $ret = _("Sun");
        break;
    case 1:
        $ret = _("Mon");
        break;
    case 2:
        $ret = _("Tue");
        break;
    case 3:
        $ret = _("Wed");
        break;
    case 4:
        $ret = _("Thu");
        break;
    case 5:
        $ret = _("Fri");
        break;
    case 6:
        $ret = _("Sat");
        break;
    default:
        $ret = '';
    }
    return( $ret );
}


/**
 * Returns the (localized) string for a given month number.
 *
 * @param string month_number the month number (01..12)
 * @return string the month name in human readable form
 */
function getMonthName( $month_number ) {
    switch( $month_number ) {
     case '01':
        $ret = _("January");
        break;
     case '02':
        $ret = _("February");
        break;
     case '03':
        $ret = _("March");
        break;
     case '04':
        $ret = _("April");
        break;
     case '05':
        $ret = _("May");
        break;
     case '06':
        $ret = _("June");
        break;
     case '07':
        $ret = _("July");
        break;
     case '08':
        $ret = _("August");
        break;
     case '09':
        $ret = _("September");
        break;
     case '10':
        $ret = _("October");
        break;
     case '11':
        $ret = _("November");
        break;
     case '12':
        $ret = _("December");
        break;
     default:
        $ret = '';
    }
    return( $ret );
}

/**
 * Returns the (localized) string for a given month number,
 * short representation.
 *
 * @param string month_number the month number (01..12)
 * @return string the shortened month in human readable form
 */
function getMonthAbrv( $month_number ) {
    switch( $month_number ) {
     case '01':
        $ret = _("Jan");
        break;
     case '02':
        $ret = _("Feb");
        break;
     case '03':
        $ret = _("Mar");
        break;
     case '04':
        $ret = _("Apr");
        break;
     case '05':
        $ret = _("Ma&#121;");
        break;
     case '06':
        $ret = _("Jun");
        break;
     case '07':
        $ret = _("Jul");
        break;
     case '08':
        $ret = _("Aug");
        break;
     case '09':
        $ret = _("Sep");
        break;
     case '10':
        $ret = _("Oct");
        break;
     case '11':
        $ret = _("Nov");
        break;
     case '12':
        $ret = _("Dec");
        break;
     default:
        $ret = '';
    }
    return( $ret );
}

/**
 * Returns the localized representation of the date/time.
 *
 * @param string date_format The format for the date, like the input for the PHP date() function.
 * @param int stamp the timestamp to convert
 * @return string a full date representation
 */
function date_intl( $date_format, $stamp ) {
    $ret = str_replace( array('D','F','l','M'), array('$1','$2','$3','$4'), $date_format );
    // to reduce the date calls we retrieve m and w in the same call
    $ret = date('w#m#'. $ret, $stamp );
    // extract day and month in order to replace later by intl day and month
    $aParts = explode('#',$ret);
    $ret = str_replace(array('$1','$4','$2','$3',), 
                       array(getDayAbrv($aParts[0]),
                             getMonthAbrv($aParts[1]),
                             getMonthName($aParts[1]),
                             getDayName($aParts[0])),
                       $aParts[2]);
    return( $ret );
}

/**
 * This returns a date of the format "Wed, Oct 29, 2003 9:52 am",
 * or the same in 24H format (depending on the user's settings),
 * and taking localization into accout.
 *
 * @param int stamp the timestamp
 * @param string fallback string to use when stamp not valid
 * @return string the long date string
 */
function getLongDateString( $stamp, $fallback = '' ) {

    global $hour_format;

    if ($stamp == -1) {
        return $fallback;
    }

    if ( $hour_format == SMPREF_TIME_12HR ) {
        $date_format = _("D, F j, Y g:i a");
    } else {
        $date_format = _("D, F j, Y H:i");
    }

    return( date_intl( $date_format, $stamp ) );

}

/**
 * Returns a short representation of the date,
 * taking timezones and localization into account.
 * Depending on user's settings, this string can be
 * of the form: "14:23" or "Jun 14, 2003" depending
 * on whether the stamp is "today" or not.
 *
 * @param int $stamp The timestamp
 * @param boolean $return_full_date_and_time When TRUE,
 *                                           ignore all
 *                                           user settings
 *                                           and use full
 *                                           date and time
 *                                           (OPTIONAL;
 *                                           default FALSE)
 * @return string the date string
 */
function getDateString( $stamp, $return_full_date_and_time=FALSE ) {

    global $invert_time, $hour_format, $show_full_date, $custom_date_format;

    if ( $stamp == -1 ) {
       return '';
    }

    $now = time();

    $dateZ = date('Z', $now );

    // FIXME: isn't this obsolete and introduced as a terrible workaround
    // for bugs at other places which are fixed a long time ago?
    if ($invert_time) {
        $dateZ = - $dateZ;
    }

    // calculate when it was midnight and when it will be,
    // in order to display dates differently if they're 'today'
    $midnight = $now - ($now % 86400) - $dateZ;
    // this is to correct if after calculations midnight is more than
    // one whole day away.
    if ($now - $midnight > 86400) {
        $midnight += 86400;
    }
    $nextmid = $midnight + 86400;

    $custom_date_format = trim($custom_date_format);

    if ($return_full_date_and_time) {
        if ( $hour_format == SMPREF_TIME_12HR ) {
            $date_format = _("D, F j, Y g:i a");
        } else {
            $date_format = _("D, F j, Y H:i");
        }
    } else if (!empty($custom_date_format)) {
        $date_format = $custom_date_format;
    } else if ($show_full_date == 1 || $nextmid < $stamp) {
        $date_format = _("M j, Y");
    } else if ($midnight < $stamp) {
        /* Today */
        if ( $hour_format == SMPREF_TIME_12HR ) {
            $date_format = _("g:i a");
        } else {
            $date_format = _("H:i");
        }
    } else if ($midnight - 518400 < $stamp) {
        /* This week */
        if ( $hour_format == SMPREF_TIME_12HR ) {
            $date_format = _("D, g:i a");
        } else {
            $date_format = _("D, H:i");
        }
    } else {
        /* before this week */
        $date_format = _("M j, Y");
    }

    return( date_intl( $date_format, $stamp ) );
}

/**
 * Decodes a RFC 822 Date-header into a timestamp
 *
 * @param array dateParts the Date-header split by whitespace
 * @return int the timestamp calculated from the header
 */
function getTimeStamp($dateParts) {
    /* $dateParts[0] == <day of week>   Mon, Tue, Wed
     * $dateParts[1] == <day of month>  23
     * $dateParts[2] == <month>         Jan, Feb, Mar
     * $dateParts[3] == <year>          1999
     * $dateParts[4] == <time>          18:54:23 (HH:MM:SS)
     * $dateParts[5] == <from GMT>      +0100
     * $dateParts[6] == <zone>          (EDT)
     *
     * NOTE:  In RFC 822, it states that <day of week> is optional.
     *        In that case, dateParts[0] would be the <day of month>
     *        and everything would be bumped up one.
     */

    if (count($dateParts) <2) {
        return -1;
    } else if (count($dateParts) ==3) {
        if (substr_count($dateParts[0],'-') == 2 &&
            substr_count($dateParts[1],':') == 2) {
            //  dd-Month-yyyy 23:19:05 +0200
            //  redefine the date
            $aDate = explode('-',$dateParts[0]);
            $newDate = array($aDate[0],$aDate[1],$aDate[2],$dateParts[1],$dateParts[2]);
            $dateParts = $newDate;
        }
    }

    /*
     * Simply check to see if the first element in the dateParts
     * array is an integer or not.
     * Since the day of week is optional, this check is needed.
     */
    if (!is_numeric(trim($dateParts[0]))) {
        /* cope with broken mailers that send "Tue,23" without space */
        if ( preg_match ('/^\w+,(\d{1,2})$/', $dateParts[0], $match) ) {
            /* replace Tue,23 with 23 */
            $dateParts[0] = $match[1];
        } else {
            /* just drop the day of week */
            array_shift($dateParts);
        }
    }

    /* calculate timestamp separated from the zone and obs-zone */
    $stamp = strtotime(implode (' ', array_splice ($dateParts,0,4)));
    if (!isset($dateParts[0])) {
        $dateParts[0] = '+0000';
    }

    if (!preg_match('/^[+-]{1}[0-9]{4}$/',$dateParts[0])) {
        /* zone in obs-zone format */
        if (preg_match('/\((.+)\)/',$dateParts[0],$regs)) {
            $obs_zone = $regs[1];
        } else {
            $obs_zone = $dateParts[0];
        }
        return getGMTSeconds($stamp, $obs_zone);
    } else {
        return getGMTSeconds($stamp, $dateParts[0]);
    }
}
Commit	Line	Data
59177427	1	<?php
7350889b	2
35586184	3	/**
	4	* date.php
	5	*
35586184	6	* Takes a date and parses it into a usable format. The form that a
	7	* date SHOULD arrive in is:
	8	* <Tue,> 29 Jun 1999 09:52:11 -0500 (EDT)
	9	* (as specified in RFC 822) -- 'Tue' is optional
	10	*
353d074a	11	* @copyright 1999-2018 The SquirrelMail Project Team
4b4abf93	12	* @license http://opensource.org/licenses/gpl-license.php GNU Public License
31841a9e	13	* @version $Id$
d6c32258	14	* @package squirrelmail
371e2a0d	15	* @subpackage date
35586184	16	*/
35586184	17
202bcbcc	18	/**
	19	* dependency information
	20	* - none
	21	*/
35586184	22
8b096f0a	23	/**
	24	* Corrects a time stamp to be the local time.
	25	*
	26	* @param int stamp the timestamp to adjust
	27	* @param string tzc the timezone correction
	28	* @return int the corrected timestamp
	29	*/
d5c4ae7c	30	function getGMTSeconds($stamp, $tzc) {
dc06f88c	31	/* date couldn't be parsed */
913ed9a3	32	if ($stamp == -1) {
	33	return -1;
	34	}
d5c4ae7c	35	/* timezone correction, expressed as `shhmm' */
d5c4ae7c	36	switch($tzc)
dc06f88c	37	{
	38	case 'Pacific':
	39	case 'PST':
d5c4ae7c	40	$tzc = '-0800';
dc06f88c	41	break;
c2e29558	42	case 'Mountain':
	43	case 'MST':
	44	case 'PDT':
	45	$tzc = '-0700';
dc06f88c	46	break;
	47	case 'Central':
	48	case 'CST':
c2e29558	49	case 'MDT':
c2e29558	50	$tzc = '-0600';
dc06f88c	51	break;
	52	case 'Eastern':
	53	case 'EST':
c2e29558	54	case 'CDT':
c2e29558	55	$tzc = '-0500';
dc06f88c	56	break;
dc06f88c	57	case 'EDT':
d5c4ae7c	58	$tzc = '-0400';
dc06f88c	59	break;
c2e29558	60	case 'GMT':
c2e29558	61	$tzc = '+0000';
dc06f88c	62	break;
dc06f88c	63	case 'BST':
d5c4ae7c	64	case 'MET':
	65	case 'CET':
	66	$tzc = '+0100';
	67	break;
dc06f88c	68	case 'EET':
c2e29558	69	case 'IST':
	70	case 'MET DST':
	71	case 'METDST':
c05566f6	72	case 'MEST':
c05566f6	73	case 'CEST':
c2e29558	74	$tzc = '+0200';
dc06f88c	75	break;
c2e29558	76	case 'HKT':
c2e29558	77	$tzc = '+0800';
dc06f88c	78	break;
c2e29558	79	case 'JST':
dc06f88c	80	case 'KST':
c2e29558	81	$tzc = '+0900';
dc06f88c	82	break;
0e4ae91a	83	}
d5c4ae7c	84	$neg = false;
d5c4ae7c	85	if (substr($tzc, 0, 1) == '-') {
0e4ae91a	86	$neg = true;
d5c4ae7c	87	} else if (substr($tzc, 0, 1) != '+') {
d5c4ae7c	88	$tzc = '+'.$tzc;
0e4ae91a	89	}
d5c4ae7c	90	$hh = substr($tzc,1,2);
	91	$mm = substr($tzc,3,2);
	92	$iTzc = ($hh * 60 + $mm) * 60;
c2e29558	93	if ($neg) $iTzc = -1 * (int) $iTzc;
d5c4ae7c	94	/* stamp in gmt */
d5c4ae7c	95	$stamp -= $iTzc;
4f51df66	96	/* now find what the server is at */
0e4ae91a	97	$current = date('Z', time());
d5c4ae7c	98	/* stamp in local timezone */
d5c4ae7c	99	$stamp += $current;
c2e29558	100
0e4ae91a	101	return $stamp;
0e4ae91a	102	}
0f1835f3	103
0e4ae91a	104	/**
8b096f0a	105	* Returns the (localized) string for a given day number.
	106	* Switch system has been intentionaly chosen for the
	107	* internationalization of month and day names. The reason
	108	* is to make sure that _("") strings will go into the
	109	* main po.
	110	*
	111	* @param int day_number the day number
	112	* @return string the day in human readable form
	113	*/
0e4ae91a	114	function getDayName( $day_number ) {
0f1835f3	115
0e4ae91a	116	switch( $day_number ) {
	117	case 0:
	118	$ret = _("Sunday");
	119	break;
	120	case 1:
	121	$ret = _("Monday");
	122	break;
	123	case 2:
	124	$ret = _("Tuesday");
	125	break;
	126	case 3:
	127	$ret = _("Wednesday");
	128	break;
	129	case 4:
	130	$ret = _("Thursday");
	131	break;
	132	case 5:
	133	$ret = _("Friday");
	134	break;
	135	case 6:
	136	$ret = _("Saturday");
	137	break;
	138	default:
	139	$ret = '';
	140	}
	141	return( $ret );
	142	}
d59837cf	143
8b096f0a	144	/**
	145	* Like getDayName, but returns the short form
	146	* @param int day_number the day number
	147	* @return string the day in short human readable form
	148	*/
22d73941	149	function getDayAbrv( $day_number ) {
	150
	151	switch( $day_number ) {
	152	case 0:
	153	$ret = _("Sun");
	154	break;
	155	case 1:
	156	$ret = _("Mon");
	157	break;
	158	case 2:
	159	$ret = _("Tue");
	160	break;
	161	case 3:
	162	$ret = _("Wed");
	163	break;
	164	case 4:
	165	$ret = _("Thu");
	166	break;
	167	case 5:
	168	$ret = _("Fri");
	169	break;
	170	case 6:
	171	$ret = _("Sat");
	172	break;
	173	default:
	174	$ret = '';
	175	}
	176	return( $ret );
	177	}
	178
8b096f0a	179
	180	/**
	181	* Returns the (localized) string for a given month number.
	182	*
c2e29558	183	* @param string month_number the month number (01..12)
8b096f0a	184	* @return string the month name in human readable form
8b096f0a	185	*/
0e4ae91a	186	function getMonthName( $month_number ) {
	187	switch( $month_number ) {
	188	case '01':
	189	$ret = _("January");
	190	break;
	191	case '02':
	192	$ret = _("February");
	193	break;
	194	case '03':
	195	$ret = _("March");
	196	break;
	197	case '04':
	198	$ret = _("April");
	199	break;
	200	case '05':
	201	$ret = _("May");
	202	break;
	203	case '06':
	204	$ret = _("June");
	205	break;
	206	case '07':
	207	$ret = _("July");
	208	break;
	209	case '08':
	210	$ret = _("August");
	211	break;
	212	case '09':
	213	$ret = _("September");
	214	break;
	215	case '10':
	216	$ret = _("October");
	217	break;
	218	case '11':
	219	$ret = _("November");
	220	break;
	221	case '12':
	222	$ret = _("December");
	223	break;
	224	default:
	225	$ret = '';
	226	}
	227	return( $ret );
	228	}
d59837cf	229
8b096f0a	230	/**
	231	* Returns the (localized) string for a given month number,
	232	* short representation.
	233	*
c2e29558	234	* @param string month_number the month number (01..12)
8b096f0a	235	* @return string the shortened month in human readable form
8b096f0a	236	*/
22d73941	237	function getMonthAbrv( $month_number ) {
	238	switch( $month_number ) {
	239	case '01':
	240	$ret = _("Jan");
	241	break;
	242	case '02':
	243	$ret = _("Feb");
	244	break;
	245	case '03':
	246	$ret = _("Mar");
	247	break;
	248	case '04':
	249	$ret = _("Apr");
	250	break;
	251	case '05':
	252	$ret = _("May");
	253	break;
	254	case '06':
	255	$ret = _("Jun");
	256	break;
	257	case '07':
	258	$ret = _("Jul");
	259	break;
	260	case '08':
	261	$ret = _("Aug");
	262	break;
	263	case '09':
	264	$ret = _("Sep");
	265	break;
	266	case '10':
	267	$ret = _("Oct");
	268	break;
	269	case '11':
	270	$ret = _("Nov");
	271	break;
	272	case '12':
	273	$ret = _("Dec");
	274	break;
	275	default:
	276	$ret = '';
	277	}
	278	return( $ret );
	279	}
	280
8b096f0a	281	/**
	282	* Returns the localized representation of the date/time.
	283	*
	284	* @param string date_format The format for the date, like the input for the PHP date() function.
	285	* @param int stamp the timestamp to convert
	286	* @return string a full date representation
	287	*/
0e4ae91a	288	function date_intl( $date_format, $stamp ) {
e6b76811	289	$ret = str_replace( array('D','F','l','M'), array('$1','$2','$3','$4'), $date_format );
8b096f0a	290	// to reduce the date calls we retrieve m and w in the same call
	291	$ret = date('w#m#'. $ret, $stamp );
	292	// extract day and month in order to replace later by intl day and month
c2e29558	293	$aParts = explode('#',$ret);
26017e66	294	$ret = str_replace(array('$1','$4','$2','$3',),
	295	array(getDayAbrv($aParts[0]),
	296	getMonthAbrv($aParts[1]),
	297	getMonthName($aParts[1]),
	298	getDayName($aParts[0])),
	299	$aParts[2]);
8b096f0a	300	return( $ret );
0e4ae91a	301	}
d59837cf	302
8b096f0a	303	/**
	304	* This returns a date of the format "Wed, Oct 29, 2003 9:52 am",
	305	* or the same in 24H format (depending on the user's settings),
	306	* and taking localization into accout.
	307	*
	308	* @param int stamp the timestamp
3aaa3214	309	* @param string fallback string to use when stamp not valid
8b096f0a	310	* @return string the long date string
8b096f0a	311	*/
3aaa3214	312	function getLongDateString( $stamp, $fallback = '' ) {
d59837cf	313
0e4ae91a	314	global $hour_format;
c2e29558	315
913ed9a3	316	if ($stamp == -1) {
3aaa3214	317	return $fallback;
913ed9a3	318	}
913ed9a3	319
0e4ae91a	320	if ( $hour_format == SMPREF_TIME_12HR ) {
	321	$date_format = _("D, F j, Y g:i a");
	322	} else {
3f7e6af3	323	$date_format = _("D, F j, Y H:i");
0e4ae91a	324	}
c2e29558	325
0e4ae91a	326	return( date_intl( $date_format, $stamp ) );
0f1835f3	327
0e4ae91a	328	}
d205a7bf	329
8b096f0a	330	/**
	331	* Returns a short representation of the date,
	332	* taking timezones and localization into account.
	333	* Depending on user's settings, this string can be
	334	* of the form: "14:23" or "Jun 14, 2003" depending
	335	* on whether the stamp is "today" or not.
	336	*
d72549cb	337	* @param int $stamp The timestamp
	338	* @param boolean $return_full_date_and_time When TRUE,
	339	* ignore all
	340	* user settings
	341	* and use full
	342	* date and time
	343	* (OPTIONAL;
	344	* default FALSE)
8b096f0a	345	* @return string the date string
8b096f0a	346	*/
d72549cb	347	function getDateString( $stamp, $return_full_date_and_time=FALSE ) {
d68a3926	348
26017e66	349	global $invert_time, $hour_format, $show_full_date, $custom_date_format;
dc06f88c	350
	351	if ( $stamp == -1 ) {
	352	return '';
	353	}
c2e29558	354
0e4ae91a	355	$now = time();
c2e29558	356
0e4ae91a	357	$dateZ = date('Z', $now );
3f298968	358
3f298968	359	// FIXME: isn't this obsolete and introduced as a terrible workaround
c2e29558	360	// for bugs at other places which are fixed a long time ago?
0e4ae91a	361	if ($invert_time) {
	362	$dateZ = - $dateZ;
	363	}
b0d8461b	364
	365	// calculate when it was midnight and when it will be,
	366	// in order to display dates differently if they're 'today'
0e4ae91a	367	$midnight = $now - ($now % 86400) - $dateZ;
b0d8461b	368	// this is to correct if after calculations midnight is more than
	369	// one whole day away.
	370	if ($now - $midnight > 86400) {
	371	$midnight += 86400;
	372	}
	373	$nextmid = $midnight + 86400;
c2e29558	374
26017e66	375	$custom_date_format = trim($custom_date_format);
d72549cb	376
	377	if ($return_full_date_and_time) {
	378	if ( $hour_format == SMPREF_TIME_12HR ) {
316c380a	379	$date_format = _("D, F j, Y g:i a");
d72549cb	380	} else {
316c380a	381	$date_format = _("D, F j, Y H:i");
d72549cb	382	}
d72549cb	383	} else if (!empty($custom_date_format)) {
26017e66	384	$date_format = $custom_date_format;
26017e66	385	} else if ($show_full_date == 1 \|\| $nextmid < $stamp) {
3e3b60e3	386	$date_format = _("M j, Y");
3e3b60e3	387	} else if ($midnight < $stamp) {
0e4ae91a	388	/* Today */
	389	if ( $hour_format == SMPREF_TIME_12HR ) {
	390	$date_format = _("g:i a");
	391	} else {
3f7e6af3	392	$date_format = _("H:i");
0e4ae91a	393	}
	394	} else if ($midnight - 518400 < $stamp) {
	395	/* This week */
	396	if ( $hour_format == SMPREF_TIME_12HR ) {
	397	$date_format = _("D, g:i a");
	398	} else {
3f7e6af3	399	$date_format = _("D, H:i");
0e4ae91a	400	}
	401	} else {
	402	/* before this week */
	403	$date_format = _("M j, Y");
	404	}
c2e29558	405
0e4ae91a	406	return( date_intl( $date_format, $stamp ) );
0e4ae91a	407	}
0f1835f3	408
8b096f0a	409	/**
	410	* Decodes a RFC 822 Date-header into a timestamp
	411	*
	412	* @param array dateParts the Date-header split by whitespace
	413	* @return int the timestamp calculated from the header
	414	*/
0e4ae91a	415	function getTimeStamp($dateParts) {
4f51df66	416	/* $dateParts[0] == <day of week> Mon, Tue, Wed
	417	* $dateParts[1] == <day of month> 23
	418	* $dateParts[2] == <month> Jan, Feb, Mar
	419	* $dateParts[3] == <year> 1999
	420	* $dateParts[4] == <time> 18:54:23 (HH:MM:SS)
	421	* $dateParts[5] == <from GMT> +0100
	422	* $dateParts[6] == <zone> (EDT)
	423	*
	424	* NOTE: In RFC 822, it states that <day of week> is optional.
	425	* In that case, dateParts[0] would be the <day of month>
	426	* and everything would be bumped up one.
	427	*/
d5c4ae7c	428
1cbd8754	429	if (count($dateParts) <2) {
2a9b0fad	430	return -1;
1cbd8754	431	} else if (count($dateParts) ==3) {
c2e29558	432	if (substr_count($dateParts[0],'-') == 2 &&
	433	substr_count($dateParts[1],':') == 2) {
	434	// dd-Month-yyyy 23:19:05 +0200
	435	// redefine the date
	436	$aDate = explode('-',$dateParts[0]);
	437	$newDate = array($aDate[0],$aDate[1],$aDate[2],$dateParts[1],$dateParts[2]);
	438	$dateParts = $newDate;
	439	}
1cbd8754	440	}
3302d0d4	441
1cbd8754	442	/*
	443	* Simply check to see if the first element in the dateParts
	444	* array is an integer or not.
	445	* Since the day of week is optional, this check is needed.
	446	*/
d5c4ae7c	447	if (!is_numeric(trim($dateParts[0]))) {
1cbd8754	448	/* cope with broken mailers that send "Tue,23" without space */
	449	if ( preg_match ('/^\w+,(\d{1,2})$/', $dateParts[0], $match) ) {
	450	/* replace Tue,23 with 23 */
	451	$dateParts[0] = $match[1];
	452	} else {
	453	/* just drop the day of week */
	454	array_shift($dateParts);
	455	}
0e4ae91a	456	}
1cbd8754	457
d5c4ae7c	458	/* calculate timestamp separated from the zone and obs-zone */
	459	$stamp = strtotime(implode (' ', array_splice ($dateParts,0,4)));
	460	if (!isset($dateParts[0])) {
	461	$dateParts[0] = '+0000';
0e4ae91a	462	}
dc06f88c	463
d5c4ae7c	464	if (!preg_match('/^[+-]{1}[0-9]{4}$/',$dateParts[0])) {
	465	/* zone in obs-zone format */
	466	if (preg_match('/\((.+)\)/',$dateParts[0],$regs)) {
	467	$obs_zone = $regs[1];
	468	} else {
	469	$obs_zone = $dateParts[0];
	470	}
	471	return getGMTSeconds($stamp, $obs_zone);
	472	} else {
	473	return getGMTSeconds($stamp, $dateParts[0]);
0e4ae91a	474	}
0e4ae91a	475	}