PhpCompatLessFiveSixHelper::getTimezoneStringFromGmtOffset() - Code Metrics - Inspection of "Daily Inspection: Merge branch 'master' into BUG-1..." - eventespresso/event-espresso-core - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Branch — BUG-11108-ticket-reserved-coun... (144d27)

unknown

created 2018-02-28 21:02 UTC

getTimezoneStringFromGmtOffset() B

↳ Parent: PhpCompatLessFiveSixHelper

Complexity

Conditions	6
Paths	9

Size

Total Lines	31
Code Lines	19

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	6
eloc	19
nc	9
nop	1
dl	0
loc	31
rs	8.439
c	0
b	0
f	0

<?php
namespace EventEspresso\core\services\helpers\datetime;

use DateTimeZone;
use DomainException;
use EE_Error;
use Exception;

/**
 * PhpCompatLessFiveSixHelper
 * This class is an implementation of DatetimeHelper methods for php versions < 5.6
 * This class will throw an exception if the php version is greater than 5.6 when it is constructed.
 *
 * @package EventEspresso\core\domain\datetime
 * @author  Darren Ethier
 * @since   4.9.54.rc
 */
class PhpCompatLessFiveSixHelper extends AbstractHelper
{

    /**
     * PhpCompatLessFiveSixHelper constructor.
     *
     * @throws DomainException
     */
    public function __construct()
    {
        if (PHP_VERSION_ID >= 50600) {
            throw new DomainException(
                sprintf(
                    esc_html__(
                        'The %1$s is only usable on php versions less than 5.6.  You\'ll want to use %2$s instead.',
                        'event_espresso'
                    ),
                    __CLASS__,
                    'EventEspresso\core\services\helpers\datetime\PhpCompatGreaterFiveSixHelper'
                )
            );
        }
    }

    /**
     * Returns a timezone string for the provided gmt_offset.
     *
     * @param float|string $gmt_offset
     * @return string
     * @throws EE_Error
     */
    public function getTimezoneStringFromGmtOffset($gmt_offset = '')
    {
        $gmt_offset_or_timezone_string = $this->sanitizeInitialIncomingGmtOffsetForGettingTimezoneString($gmt_offset);
        if (is_string($gmt_offset_or_timezone_string)) {
            return $gmt_offset_or_timezone_string;
        }
        //well we know its a float, so let's roll with it.
        $gmt_offset = $gmt_offset_or_timezone_string;
        // convert GMT offset to seconds
        $gmt_offset *= HOUR_IN_SECONDS;
        // although we don't know the TZ abbreviation, we know the UTC offset
        $timezone_string = timezone_name_from_abbr(null, $gmt_offset);
        //only use this timezone_string IF it's current offset matches the given offset
        if (! empty($timezone_string)) {
            $offset = null;
            try {
                $offset = $this->getTimezoneOffset(new DateTimeZone($timezone_string));
                if ($offset !== $gmt_offset) {
                    $timezone_string = false;
                }
            } catch (Exception $e) {
                $timezone_string = false;
            }
        }
        // better have a valid timezone string by now, but if not, sigh... loop thru  the timezone_abbreviations_list()
        //...
        $timezone_string = $timezone_string !== false
            ? $timezone_string
            : $this->getTimezoneStringFromAbbreviationsList($gmt_offset);
        return $timezone_string;
    }


    /**
     * @param int  $gmt_offset
     * @param bool $coerce If true, we attempt to coerce with our adjustment table
     * @see self::adjustInvalidGmtOffset
     * @return string
     * @throws EE_Error
     */
    protected function getTimezoneStringFromAbbreviationsList($gmt_offset = 0, $coerce = true)
    {
        $gmt_offset = (int)$gmt_offset;
        /** @var array[] $abbreviations */
        $abbreviations = DateTimeZone::listAbbreviations();
        foreach ($abbreviations as $abbreviation) {
            foreach ($abbreviation as $timezone) {
                if ((int)$timezone['offset'] === $gmt_offset && (bool)$timezone['dst'] === false) {
                    try {
                        $offset = $this->getTimezoneOffset(new DateTimeZone($timezone['timezone_id']));
                        if ($offset !== $gmt_offset) {
                            continue;
                        }
                        return $timezone['timezone_id'];
                    } catch (Exception $e) {
                        continue;
                    }
                }
            }
        }
        //if $coerce is true, let's see if we can get a timezone string after the offset is adjusted
        if ($coerce === true) {
            $timezone_string = $this->getTimezoneStringFromAbbreviationsList(
                $this->adjustInvalidGmtOffsets($gmt_offset),
                false
            );
            if ($timezone_string) {
                return $timezone_string;
            }
        }
        throw new EE_Error(
            sprintf(
                esc_html__(
                    'The provided GMT offset (%1$s), is invalid, please check with %2$sthis list%3$s for what valid timezones can be used',
                    'event_espresso'
                ),
                $gmt_offset / HOUR_IN_SECONDS,
                '<a href="http://www.php.net/manual/en/timezones.php">',
                '</a>'
            )
        );
    }


    /**
     * Depending on PHP version,
     * there might not be valid current timezone strings to match these gmt_offsets in its timezone tables.
     * To get around that, for these fringe timezones we bump them to a known valid offset.
     * This method should ONLY be called after first verifying an timezone_string cannot be retrieved for the offset.
     *
     * @param int $gmt_offset
     * @return int
     */
    public function adjustInvalidGmtOffsets($gmt_offset = 0)
    {
        //make sure $gmt_offset is int
        $gmt_offset = (int) $gmt_offset;
        switch ($gmt_offset) {
            //-12
            case -43200:
                $gmt_offset = -39600;
                break;
            //-11.5
            case -41400:
                $gmt_offset = -39600;
                break;
            //-10.5
            case -37800:
                $gmt_offset = -39600;
                break;
            //-8.5
            case -30600:
                $gmt_offset = -28800;
                break;
            //-7.5
            case -27000:
                $gmt_offset = -25200;
                break;
            //-6.5
            case -23400:
                $gmt_offset = -21600;
                break;
            //-5.5
            case -19800:
                $gmt_offset = -18000;
                break;
            //-4.5
            case -16200:
                $gmt_offset = -14400;
                break;
            //-3.5
            case -12600:
                $gmt_offset = -10800;
                break;
            //-2.5
            case -9000:
                $gmt_offset = -7200;
                break;
            //-1.5
            case -5400:
                $gmt_offset = -3600;
                break;
            //-0.5
            case -1800:
                $gmt_offset = 0;
                break;
            //.5
            case 1800:
                $gmt_offset = 3600;
                break;
            //1.5
            case 5400:
                $gmt_offset = 7200;
                break;
            //2.5
            case 9000:
                $gmt_offset = 10800;
                break;
            //3.5
            case 12600:
                $gmt_offset = 14400;
                break;
            //7.5
            case 27000:
                $gmt_offset = 28800;
                break;
            //8.5
            case 30600:
                $gmt_offset = 31500;
                break;
            //10.5
            case 37800:
                $gmt_offset = 39600;
                break;
            //11.5
            case 41400:
                $gmt_offset = 43200;
                break;
            //12.75
            case 45900:
                $gmt_offset = 46800;
                break;
            //13.75
            case 49500:
                $gmt_offset = 50400;
                break;
        }
        return $gmt_offset;
    }
}


1		<?php
2		namespace EventEspresso\core\services\helpers\datetime;
3
4		use DateTimeZone;
5		use DomainException;
6		use EE_Error;
7		use Exception;
8
9		/**
10		* PhpCompatLessFiveSixHelper
11		* This class is an implementation of DatetimeHelper methods for php versions < 5.6
12		* This class will throw an exception if the php version is greater than 5.6 when it is constructed.
13		*
14		* @package EventEspresso\core\domain\datetime
15		* @author Darren Ethier
16		* @since 4.9.54.rc
17		*/
18		class PhpCompatLessFiveSixHelper extends AbstractHelper
19		{
20
21		/**
22		* PhpCompatLessFiveSixHelper constructor.
23		*
24		* @throws DomainException
25		*/
26	View Code Duplication	public function __construct()
27		{
28		if (PHP_VERSION_ID >= 50600) {
29		throw new DomainException(
30		sprintf(
31		esc_html__(
32		'The %1$s is only usable on php versions less than 5.6. You\'ll want to use %2$s instead.',
33		'event_espresso'
34		),
35		__CLASS__,
36		'EventEspresso\core\services\helpers\datetime\PhpCompatGreaterFiveSixHelper'
37		)
38		);
39		}
40		}
41
42		/**
43		* Returns a timezone string for the provided gmt_offset.
44		*
45		* @param float\|string $gmt_offset
46		* @return string
47		* @throws EE_Error
48		*/
49		public function getTimezoneStringFromGmtOffset($gmt_offset = '')
50		{
51		$gmt_offset_or_timezone_string = $this->sanitizeInitialIncomingGmtOffsetForGettingTimezoneString($gmt_offset);
52		if (is_string($gmt_offset_or_timezone_string)) {
53		return $gmt_offset_or_timezone_string;
54		}
55		//well we know its a float, so let's roll with it.
56		$gmt_offset = $gmt_offset_or_timezone_string;
57		// convert GMT offset to seconds
58		$gmt_offset *= HOUR_IN_SECONDS;
59		// although we don't know the TZ abbreviation, we know the UTC offset
60		$timezone_string = timezone_name_from_abbr(null, $gmt_offset);
61		//only use this timezone_string IF it's current offset matches the given offset
62		if (! empty($timezone_string)) {
63		$offset = null;
64		try {
65		$offset = $this->getTimezoneOffset(new DateTimeZone($timezone_string));
66		if ($offset !== $gmt_offset) {
67		$timezone_string = false;
68		}
69		} catch (Exception $e) {
70		$timezone_string = false;
71		}
72		}
73		// better have a valid timezone string by now, but if not, sigh... loop thru the timezone_abbreviations_list()
74		//...
75		$timezone_string = $timezone_string !== false
76		? $timezone_string
77		: $this->getTimezoneStringFromAbbreviationsList($gmt_offset);
78		return $timezone_string;
79		}
80
81
82		/**
83		* @param int $gmt_offset
84		* @param bool $coerce If true, we attempt to coerce with our adjustment table
85		* @see self::adjustInvalidGmtOffset
86		* @return string
87		* @throws EE_Error
88		*/
89		protected function getTimezoneStringFromAbbreviationsList($gmt_offset = 0, $coerce = true)
90		{
91		$gmt_offset = (int)$gmt_offset;
92		/** @var array[] $abbreviations */
93		$abbreviations = DateTimeZone::listAbbreviations();
94	View Code Duplication	foreach ($abbreviations as $abbreviation) {
95		foreach ($abbreviation as $timezone) {
96		if ((int)$timezone['offset'] === $gmt_offset && (bool)$timezone['dst'] === false) {
97		try {
98		$offset = $this->getTimezoneOffset(new DateTimeZone($timezone['timezone_id']));
99		if ($offset !== $gmt_offset) {
100		continue;
101		}
102		return $timezone['timezone_id'];
103		} catch (Exception $e) {
104		continue;
105		}
106		}
107		}
108		}
109		//if $coerce is true, let's see if we can get a timezone string after the offset is adjusted
110		if ($coerce === true) {
111		$timezone_string = $this->getTimezoneStringFromAbbreviationsList(
112		$this->adjustInvalidGmtOffsets($gmt_offset),
113		false
114		);
115		if ($timezone_string) {
116		return $timezone_string;
117		}
118		}
119		throw new EE_Error(
120		sprintf(
121		esc_html__(
122		'The provided GMT offset (%1$s), is invalid, please check with %2$sthis list%3$s for what valid timezones can be used',
123		'event_espresso'
124		),
125		$gmt_offset / HOUR_IN_SECONDS,
126		'<a href="http://www.php.net/manual/en/timezones.php">',
127		'</a>'
128		)
129		);
130		}
131
132
133		/**
134		* Depending on PHP version,
135		* there might not be valid current timezone strings to match these gmt_offsets in its timezone tables.
136		* To get around that, for these fringe timezones we bump them to a known valid offset.
137		* This method should ONLY be called after first verifying an timezone_string cannot be retrieved for the offset.
138		*
139		* @param int $gmt_offset
140		* @return int
141		*/
142		public function adjustInvalidGmtOffsets($gmt_offset = 0)
143		{
144		//make sure $gmt_offset is int
145		$gmt_offset = (int) $gmt_offset;
146		switch ($gmt_offset) {
147		//-12
148		case -43200:
149		$gmt_offset = -39600;
150		break;
151		//-11.5
152		case -41400:
153		$gmt_offset = -39600;
154		break;
155		//-10.5
156		case -37800:
157		$gmt_offset = -39600;
158		break;
159		//-8.5
160		case -30600:
161		$gmt_offset = -28800;
162		break;
163		//-7.5
164		case -27000:
165		$gmt_offset = -25200;
166		break;
167		//-6.5
168		case -23400:
169		$gmt_offset = -21600;
170		break;
171		//-5.5
172		case -19800:
173		$gmt_offset = -18000;
174		break;
175		//-4.5
176		case -16200:
177		$gmt_offset = -14400;
178		break;
179		//-3.5
180		case -12600:
181		$gmt_offset = -10800;
182		break;
183		//-2.5
184		case -9000:
185		$gmt_offset = -7200;
186		break;
187		//-1.5
188		case -5400:
189		$gmt_offset = -3600;
190		break;
191		//-0.5
192		case -1800:
193		$gmt_offset = 0;
194		break;
195		//.5
196		case 1800:
197		$gmt_offset = 3600;
198		break;
199		//1.5
200		case 5400:
201		$gmt_offset = 7200;
202		break;
203		//2.5
204		case 9000:
205		$gmt_offset = 10800;
206		break;
207		//3.5
208		case 12600:
209		$gmt_offset = 14400;
210		break;
211		//7.5
212		case 27000:
213		$gmt_offset = 28800;
214		break;
215		//8.5
216		case 30600:
217		$gmt_offset = 31500;
218		break;
219		//10.5
220		case 37800:
221		$gmt_offset = 39600;
222		break;
223		//11.5
224		case 41400:
225		$gmt_offset = 43200;
226		break;
227		//12.75
228		case 45900:
229		$gmt_offset = 46800;
230		break;
231		//13.75
232		case 49500:
233		$gmt_offset = 50400;
234		break;
235		}
236		return $gmt_offset;
237		}
238		}
239

eventespresso / event-espresso-core

Branch — BUG-11108-ticket-reserved-coun... (144d27)

getTimezoneStringFromGmtOffset() B

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