File: /home/p/e/r/perditaeyz/www/wp-content/plugins/my-calendar/includes/date-utilities.php
<?php
/**
* Date Utilities file
*
* @category Utilities
* @package My Calendar
* @author Joe Dolson
* @license GPLv2 or later
* @link https://www.joedolson.com/my-calendar/
*/
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
/**
* Generate classes for a given date
*
* @param string $current timestamp.
*
* @return string classes
*/
function mc_dateclass( $current ) {
$dayclass = sanitize_html_class( strtolower( date_i18n( 'l', $current ) ) ) . ' ' . sanitize_html_class( strtolower( date_i18n( 'D', $current ) ) );
if ( current_time( 'Ymd' ) === mc_date( 'Ymd', $current, false ) ) {
$dateclass = 'current-day';
} elseif ( my_calendar_date_comp( current_time( 'Y-m-d' ), mc_date( 'Y-m-d', $current, false ) ) ) {
$dateclass = 'future-day';
} else {
$dateclass = 'past-day past-date'; // stupid legacy classes.
}
return esc_attr( $dayclass . ' ' . $dateclass );
}
/**
* Given a date and a quantity of time to add, produce new date
*
* @param string $givendate A time string.
* @param int $day Number of days to add.
* @param int $mth Number of months to add.
* @param int $yr number of years to add.
*
* @return timestamp
*/
function my_calendar_add_date( $givendate, $day = 0, $mth = 0, $yr = 0 ) {
$cd = strtotime( $givendate );
$newdate = mktime( mc_date( 'H', $cd, false ), mc_date( 'i', $cd, false ), mc_date( 's', $cd, false ), mc_date( 'm', $cd, false ) + $mth, mc_date( 'd', $cd, false ) + $day, mc_date( 'Y', $cd, false ) + $yr );
return $newdate;
}
/**
* Test if the date is before or equal to second date with time precision
*
* @param string $early date string.
* @param string $late date string.
*
* @return boolean true if first date earlier or equal
*/
function my_calendar_date_comp( $early, $late ) {
$firstdate = strtotime( $early );
$lastdate = strtotime( $late );
if ( $firstdate <= $lastdate ) {
return true;
} else {
return false;
}
}
/**
* Test if first date before second date with time precision
*
* @param string $early date string.
* @param string $late date string.
*
* @return boolean true if first date earlier
*/
function my_calendar_date_xcomp( $early, $late ) {
$firstdate = strtotime( $early );
$lastdate = strtotime( $late );
if ( $firstdate < $lastdate ) {
return true;
} else {
return false;
}
}
/**
* Test if dates are the same with day precision
*
* @param string $early date string in current time zone.
* @param string $late date string in current time zone.
*
* @return boolean true if first date equal to second
*/
function my_calendar_date_equal( $early, $late ) {
// convert full datetime to date only.
$firstdate = strtotime( mc_date( 'Y-m-d', strtotime( $early ), false ) );
$lastdate = strtotime( mc_date( 'Y-m-d', strtotime( $late ), false ) );
if ( $firstdate === $lastdate ) {
return true;
} else {
return false;
}
}
/**
* Function to compare time in event objects for sorting
*
* @param object $a event object.
* @param object $b event object.
*
* @return int (ternary value)
*/
function mc_time_cmp( $a, $b ) {
if ( $a->occur_begin === $b->occur_begin ) {
return 0;
}
return ( $a->occur_begin < $b->occur_begin ) ? - 1 : 1;
}
/**
* Function to compare datetime in event objects & sort by string
*
* @param object $a event object.
* @param object $b event object.
*
* @return integer (ternary value)
*/
function mc_datetime_cmp( $a, $b ) {
$event_dt_a = strtotime( $a->occur_begin );
$event_dt_b = strtotime( $b->occur_begin );
if ( $event_dt_a === $event_dt_b ) {
// this should sub-sort by title if date is the same. But it doesn't seem to.
$ta = $a->event_title;
$tb = $b->event_title;
return strcmp( $ta, $tb );
}
return ( $event_dt_a < $event_dt_b ) ? - 1 : 1;
}
/**
* Compare two event dates with time precision
*
* @param object $a event object.
* @param object $b event object.
*
* @return integer (ternary value)
*/
function mc_timediff_cmp( $a, $b ) {
$a = $a . current_time( ' H:i:s' );
$b = $b . current_time( ' H:i:s' );
$event_dt_a = strtotime( $a );
$event_dt_b = strtotime( $b );
$diff_a = mc_date_diff_precise( $event_dt_a );
$diff_b = mc_date_diff_precise( $event_dt_b );
if ( $diff_a === $diff_b ) {
return 0;
}
return ( $diff_a < $diff_b ) ? - 1 : 1;
}
/**
* Compare two dates for diff with high precision
*
* @param int $start timestamp.
* @param mixed int/string $end timestamp or 'now'.
*
* @return absolute time diff
*/
function mc_date_diff_precise( $start, $end = 'NOW' ) {
if ( 'NOW' === $end ) {
$end = strtotime( 'NOW' );
}
$sdate = $start;
$edate = $end;
$time = $edate - $sdate;
return abs( $time );
}
/**
* Get the week of the month a given date falls on.
*
* @param integer $date_of_event current month's date.
*
* @return integer $week_of_event The week of the month this date falls in;
*/
function mc_week_of_month( $date_of_event ) {
$week_of_event = 0;
switch ( $date_of_event ) {
case ( $date_of_event >= 1 && $date_of_event < 8 ):
$week_of_event = 0;
break;
case ( $date_of_event >= 8 && $date_of_event < 15 ):
$week_of_event = 1;
break;
case ( $date_of_event >= 15 && $date_of_event < 22 ):
$week_of_event = 2;
break;
case ( $date_of_event >= 22 && $date_of_event < 29 ):
$week_of_event = 3;
break;
case ( $date_of_event >= 29 ):
$week_of_event = 4;
break;
}
return $week_of_event;
}
/**
* Validate that a string is a valid date.
*
* @param string $date date string.
*
* @return boolean true if verified date
*/
function mc_checkdate( $date ) {
$time = strtotime( $date );
$m = mc_date( 'n', $time );
$d = mc_date( 'j', $time );
$y = mc_date( 'Y', $time );
return checkdate( $m, $d, $y );
}
/**
* Get the first day value of the current week.
*
* @param mixed int/boolean $timestamp timestamp + offset or false if now.
*
* @return array day and month
*/
function mc_first_day_of_week( $timestamp = false ) {
$start_of_week = ( get_option( 'start_of_week' ) === '1' || get_option( 'start_of_week' ) === '0' ) ? absint( get_option( 'start_of_week' ) ) : 0;
if ( $timestamp ) {
$today = mc_date( 'w', $timestamp, false );
$now = mc_date( 'Y-m-d', $timestamp, false );
} else {
$today = current_time( 'w' );
$now = current_time( 'Y-m-d' );
}
$month = 0;
$sub = 0; // don't change month.
switch ( $today ) {
case 1:
$sub = ( 1 === $start_of_week ) ? 0 : 1;
break; // mon.
case 2:
$sub = ( 1 === $start_of_week ) ? 1 : 2;
break; // tues.
case 3:
$sub = ( 1 === $start_of_week ) ? 2 : 3;
break; // wed.
case 4:
$sub = ( 1 === $start_of_week ) ? 3 : 4;
break; // thu.
case 5:
$sub = ( 1 === $start_of_week ) ? 4 : 5;
break; // fri.
case 6:
$sub = ( 1 === $start_of_week ) ? 5 : 6;
break; // sat.
case 0:
$sub = ( 1 === $start_of_week ) ? 6 : 0;
break; // sun.
}
$day = mc_date( 'j', strtotime( $now . ' -' . $sub . ' day' ), false );
if ( 0 !== $sub ) {
if ( mc_date( 'n', strtotime( $now . ' -' . $sub . ' day' ), false ) !== mc_date( 'n', strtotime( $now ), false ) ) {
$month = - 1;
} else {
$month = 0;
}
}
return array( $day, $month );
}
/**
* Generate an ordinal string in English for numeric values
*
* @param int $number Any integer value.
*
* @return string number plus ordinal value
*/
function mc_ordinal( $number ) {
// when fed a number, adds the English ordinal suffix. Works for any number.
if ( $number % 100 > 10 && $number % 100 < 14 ) {
$suffix = 'th';
} else {
switch ( $number % 10 ) {
case 0:
$suffix = 'th';
break;
case 1:
$suffix = 'st';
break;
case 2:
$suffix = 'nd';
break;
case 3:
$suffix = 'rd';
break;
default:
$suffix = 'th';
break;
}
}
return apply_filters( 'mc_ordinal', "${number}$suffix", $number, $suffix );
}
/**
* Generate abbreviations & code used for HTML output of calendar headings.
*
* @param string $format 'mini', 'list', 'grid'.
*
* @return array HTML for each day in an array.
*/
function mc_name_days( $format ) {
$name_days = array(
'<abbr title="' . date_i18n( 'l', strtotime( 'Sunday' ) ) . '" aria-hidden="true">' . date_i18n( 'D', strtotime( 'Sunday' ) ) . '</abbr><span class="screen-reader-text">' . date_i18n( 'l', strtotime( 'Sunday' ) ) . '</span>',
'<abbr title="' . date_i18n( 'l', strtotime( 'Monday' ) ) . '" aria-hidden="true">' . date_i18n( 'D', strtotime( 'Monday' ) ) . '</abbr><span class="screen-reader-text">' . date_i18n( 'l', strtotime( 'Monday' ) ) . '</span>',
'<abbr title="' . date_i18n( 'l', strtotime( 'Tuesday' ) ) . '" aria-hidden="true">' . date_i18n( 'D', strtotime( 'Tuesday' ) ) . '</abbr><span class="screen-reader-text">' . date_i18n( 'l', strtotime( 'Tuesday' ) ) . '</span>',
'<abbr title="' . date_i18n( 'l', strtotime( 'Wednesday' ) ) . '" aria-hidden="true">' . date_i18n( 'D', strtotime( 'Wednesday' ) ) . '</abbr><span class="screen-reader-text">' . date_i18n( 'l', strtotime( 'Wednesday' ) ) . '</span>',
'<abbr title="' . date_i18n( 'l', strtotime( 'Thursday' ) ) . '" aria-hidden="true">' . date_i18n( 'D', strtotime( 'Thursday' ) ) . '</abbr><span class="screen-reader-text">' . date_i18n( 'l', strtotime( 'Thursday' ) ) . '</span>',
'<abbr title="' . date_i18n( 'l', strtotime( 'Friday' ) ) . '" aria-hidden="true">' . date_i18n( 'D', strtotime( 'Friday' ) ) . '</abbr><span class="screen-reader-text">' . date_i18n( 'l', strtotime( 'Friday' ) ) . '</span>',
'<abbr title="' . date_i18n( 'l', strtotime( 'Saturday' ) ) . '" aria-hidden="true">' . date_i18n( 'D', strtotime( 'Saturday' ) ) . '</abbr><span class="screen-reader-text">' . date_i18n( 'l', strtotime( 'Saturday' ) ) . '</span>',
);
if ( 'mini' === $format ) {
// PHP doesn't have a single letter abbreviation, so this has to be a translatable.
$name_days = array(
'<span aria-hidden="true">' . __( '<abbr title="Sunday">S</abbr>', 'my-calendar' ) . '</span><span class="screen-reader-text">' . date_i18n( 'l', strtotime( 'Sunday' ) ) . '</span>', // phpcs:ignore WordPress.WP.I18n.NoHtmlWrappedStrings
'<span aria-hidden="true">' . __( '<abbr title="Monday">M</abbr>', 'my-calendar' ) . '</span><span class="screen-reader-text">' . date_i18n( 'l', strtotime( 'Monday' ) ) . '</span>', // phpcs:ignore WordPress.WP.I18n.NoHtmlWrappedStrings
'<span aria-hidden="true">' . __( '<abbr title="Tuesday">T</abbr>', 'my-calendar' ) . '</span><span class="screen-reader-text">' . date_i18n( 'l', strtotime( 'Tuesday' ) ) . '</span>', // phpcs:ignore WordPress.WP.I18n.NoHtmlWrappedStrings
'<span aria-hidden="true">' . __( '<abbr title="Wednesday">W</abbr>', 'my-calendar' ) . '</span><span class="screen-reader-text">' . date_i18n( 'l', strtotime( 'Wednesday' ) ) . '</span>', // phpcs:ignore WordPress.WP.I18n.NoHtmlWrappedStrings
'<span aria-hidden="true">' . __( '<abbr title="Thursday">T</abbr>', 'my-calendar' ) . '</span><span class="screen-reader-text">' . date_i18n( 'l', strtotime( 'Thursday' ) ) . '</span>', // phpcs:ignore WordPress.WP.I18n.NoHtmlWrappedStrings
'<span aria-hidden="true">' . __( '<abbr title="Friday">F</abbr>', 'my-calendar' ) . '</span><span class="screen-reader-text">' . date_i18n( 'l', strtotime( 'Friday' ) ) . '</span>', // phpcs:ignore WordPress.WP.I18n.NoHtmlWrappedStrings
'<span aria-hidden="true">' . __( '<abbr title="Saturday">S</abbr>', 'my-calendar' ) . '</span><span class="screen-reader-text">' . date_i18n( 'l', strtotime( 'Saturday' ) ) . '</span>', // phpcs:ignore WordPress.WP.I18n.NoHtmlWrappedStrings
);
}
return $name_days;
}
/**
* Handles all cases for exiting processing early: private events, drafts, etc.
*
* @param object $event Event object.
* @param string $process_date Current date being articulated.
*
* @return boolean true if early exit is qualified.
*/
function mc_exit_early( $event, $process_date ) {
// if event is not approved, return without processing.
if ( 1 !== (int) $event->event_approved && ! mc_is_preview() ) {
return true;
}
$hide_days = apply_filters( 'mc_hide_additional_days', false, $event );
$today = mc_date( 'Y-m-d', strtotime( $event->occur_begin ) );
$current = mc_date( 'Y-m-d', strtotime( $process_date ) );
$end = mc_date( 'Y-m-d', strtotime( $event->occur_end ) );
// if event ends at midnight today (e.g., very first thing of the day), exit without re-drawing.
// or if event started yesterday & has event_hide_end checked.
$ends_at_midnight = ( '00:00:00' === $event->event_endtime && $end === $process_date && $current !== $today ) ? true : false;
// hides events if hiding end time & not first day.
$hide_day_two = ( $hide_days && ( $today !== $current ) ) ? true : false;
if ( $ends_at_midnight || $hide_day_two ) {
return true;
}
if ( mc_private_event( $event ) ) {
return true;
}
return false;
}
/**
* Check whether an object with a category_private property is private
*
* @param object $event [can be a category object].
*
* @return boolean
*/
function mc_private_event( $event ) {
$status = ( 1 === absint( $event->category_private ) && ! is_user_logged_in() ) ? true : false;
// custom filter to grant custom reasons for exiting.
// $event may not be an event object; in some cases it's a category object.
$status = apply_filters( 'mc_private_event', $status, $event );
return $status;
}
/**
* Wrapper for mc_date()
*
* @param string $format Format to use.
* @param int $timestamp Timestamp.
* @param bool $offset false to not add offset; if already a true timestamp.
*
* @return string Formatted date.
*/
function mc_date( $format, $timestamp = false, $offset = true ) {
if ( ! $timestamp ) {
// Timestamp is UTC.
$timestamp = time();
}
if ( $offset ) {
$offset = intval( get_option( 'gmt_offset', 0 ) ) * 60 * 60;
} else {
$offset = 0;
}
$timestamp = $timestamp + $offset;
return gmdate( $format, $timestamp );
}