Jalali date

[respinar]

In Perisan (fa) we use Jalali date instead of Goerging, so, I need to parse Jalali date in contao. There is good converting functions, but, I don't know where it must used.

I think, by using a extensions, I can do this. How an extenstions must be created to hack contao main date functions if the website language is fa?

Please see blew code and help me.

If this problem solved, contao usage will grow in persian countries.

<?php

function div($a, $b) {
	return (int) ($a / $b);
}

function gregorian_to_jalali($g_y, $g_m, $g_d)
{

	$g_days_in_month = array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
	$j_days_in_month = array(31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 29);
	$gy = $g_y - 1600;
	$gm = $g_m - 1;
	$gd = $g_d - 1;
	$g_day_no = 365 * $gy + div($gy + 3,4) - div($gy + 99, 100) + div($gy + 399, 400);

	for ($i=0 ; $i < $gm ; ++$i)
	{
		$g_day_no += $g_days_in_month[$i];
	}

	if ($gm>1 && (($gy % 4 == 0 && $gy % 100 != 0) || ($gy % 400 == 0)))
	{
		$g_day_no++; // leap and after Feb
	}

	$g_day_no += $gd;
	$j_day_no = $g_day_no - 79;
	$j_np = div($j_day_no, 12053); // 12053 = 365*33 + 32/4
	$j_day_no = $j_day_no % 12053;
	$jy = 979 + 33 * $j_np + 4 * div($j_day_no, 1461); // 1461 = 365*4 + 4/4
	$j_day_no %= 1461;

	if ($j_day_no >= 366)
	{
		$jy += div($j_day_no - 1, 365);
		$j_day_no = ($j_day_no - 1) % 365;
	}

	for ($i = 0 ; $i < 11 && $j_day_no >= $j_days_in_month[$i] ; ++$i)
	{
		$j_day_no -= $j_days_in_month[$i];
	}

	$jm = $i + 1;
	$jd = $j_day_no + 1;
	return array($jy, $jm, $jd);
}


function tranasmonth($number) {
	$month = array(
		1	=> '???????',
		2	=> '????????',
		3	=> '?????',
		4	=> '???',
		5	=> '??????',
		6	=> '??????',
		7	=> '???',
		8	=> '????',
		9	=> '???',
		10	=> '??',
		11	=> '????',
		12	=> '?????',
	);
	return strtr($number, $month);
}

function jalali_format($format, $date_trans, $zone_offset, $gmepoch)
{
	$part = explode(" ", @gmdate('Y m d', $gmepoch));
	list( $jy, $jm, $jd ) = gregorian_to_jalali($part[0], $part[1], $part[2]);

	$format = str_replace('Y', substr($jy, 2, 2), $format);// year as 2 digits
	$format = str_replace('y', $jy, $format);// year as 4 digits
	$format = str_replace('M', tranasmonth($jm), $format);// month as 3 lettersto letters in Persian
	$format = str_replace('m', tranasmonth($jm), $format);// month as 2 digits to letters in Persian
	$format = str_replace('F', tranasmonth($jm), $format);// month ,long form to letters in Persian
	$format = str_replace('n', tranasmonth($jm), $format);// month as digits without leading zero to letters in Persian
	$format = str_replace('d', $jd, $format);// day of the month with leading zero to digits without zero : 03 to 3
	$format = str_replace('j', $jd, $format);// day of the month as digits without leading zero
	$format = str_replace('S', ' ??', $format);// for translating English ordinal suffix as 2 character to Persian: "st, nd, rd, th" to " ??"

	return strtr(@gmdate($format, $gmepoch + $zone_offset), $date_trans);
}

?>

[xchs]

Hi respinar,

In Perisan (fa) we use Jalali date instead of Goerging, so, I need to parse Jalali date in contao.

Leo has accepted your feature request but I do actually not know when this will implemented: http://dev.contao.org/issues/2193

[respinar]

I think it must be an extentsion, not in core, So by extending parseDate() functions by that function for when LANG is "fa":

if ($LANG == "fa") {
 parse Jalali date;
} else {
 parse regular date;
}

This function must change all date that are shown in forentend.

[respinar]

Hi,

I develop a new class that can convert date to persian one. For using this class, I need to modify some core in system/modules/core/library/Contao/Date.php in parse function (line 580):

                if ($intTstamp === null)
		{
			if (TL_MODE == 'FE' && $GLOBALS['TL_LANGUAGE'] == 'fa') {
				$strDate = PersianDate::date($strFormat,$intTstamp);
			} else {
				$strDate = date($strModified);
			}
		}
		elseif (!is_numeric($intTstamp))
		{
			return '';
		}
		else
		{
			if (TL_MODE == 'FE' && $GLOBALS['TL_LANGUAGE'] == 'fa') {
				$strDate = PersianDate::date($strFormat,$intTstamp);
			} else {
				$strDate = date($strModified);
			}
		}

How can I use "Overriding class methods" or "Hooks" without modifying core?

[jk1]

Hi,

first you have to copy the contao default Date.php into your extension. Then you have to overwrite the default Date class in your autoload.php:

'Contao\Date'                  => 'system/modules/persiandate/classes/MyDate.php', 

After that, contao should use your MyDate.php class.

[respinar]

Hi jk1,
I did what you said but it did not work for me!

I have a good code for my PersianDate class but I cannot understand how Contao/Date class work.

Is it possible, you see my https://github.com/respinar/persiandate repo, and give me some more suggest?