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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <[email protected]>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Polyfill\Intl\Icu;
use Symfony\Polyfill\Intl\Icu\Exception\MethodArgumentValueNotImplementedException;
use Symfony\Polyfill\Intl\Icu\Exception\MethodNotImplementedException;
/**
* Replacement for PHP's native {@link \Collator} class.
*
* The only methods currently supported in this class are:
*
* - {@link \__construct}
* - {@link create}
* - {@link asort}
* - {@link getErrorCode}
* - {@link getErrorMessage}
* - {@link getLocale}
*
* @author Igor Wiedler <[email protected]>
* @author Bernhard Schussek <[email protected]>
*
* @internal
*/
abstract class Collator
{
/* Attribute constants */
public const FRENCH_COLLATION = 0;
public const ALTERNATE_HANDLING = 1;
public const CASE_FIRST = 2;
public const CASE_LEVEL = 3;
public const NORMALIZATION_MODE = 4;
public const STRENGTH = 5;
public const HIRAGANA_QUATERNARY_MODE = 6;
public const NUMERIC_COLLATION = 7;
/* Attribute constants values */
public const DEFAULT_VALUE = -1;
public const PRIMARY = 0;
public const SECONDARY = 1;
public const TERTIARY = 2;
public const DEFAULT_STRENGTH = 2;
public const QUATERNARY = 3;
public const IDENTICAL = 15;
public const OFF = 16;
public const ON = 17;
public const SHIFTED = 20;
public const NON_IGNORABLE = 21;
public const LOWER_FIRST = 24;
public const UPPER_FIRST = 25;
/* Sorting options */
public const SORT_REGULAR = 0;
public const SORT_NUMERIC = 2;
public const SORT_STRING = 1;
/**
* @param string|null $locale The locale code. The only currently supported locale is "en" (or null using the default locale, i.e. "en")
*
* @throws MethodArgumentValueNotImplementedException When $locale different than "en" or null is passed
*/
public function __construct(?string $locale)
{
if ('en' !== $locale && null !== $locale) {
throw new MethodArgumentValueNotImplementedException(__METHOD__, 'locale', $locale, 'Only the locale "en" is supported');
}
}
/**
* Static constructor.
*
* @param string|null $locale The locale code. The only currently supported locale is "en" (or null using the default locale, i.e. "en")
*
* @return static
*
* @throws MethodArgumentValueNotImplementedException When $locale different than "en" or null is passed
*/
public static function create(?string $locale)
{
return new static($locale);
}
/**
* Sort array maintaining index association.
*
* @param array &$array Input array
* @param int $flags Flags for sorting, can be one of the following:
* Collator::SORT_REGULAR - compare items normally (don't change types)
* Collator::SORT_NUMERIC - compare items numerically
* Collator::SORT_STRING - compare items as strings
*
* @return bool True on success or false on failure
*/
public function asort(array &$array, int $flags = self::SORT_REGULAR)
{
$intlToPlainFlagMap = [
self::SORT_REGULAR => \SORT_REGULAR,
self::SORT_NUMERIC => \SORT_NUMERIC,
self::SORT_STRING => \SORT_STRING,
];
$plainSortFlag = $intlToPlainFlagMap[$flags] ?? self::SORT_REGULAR;
return asort($array, $plainSortFlag);
}
/**
* Not supported. Compare two Unicode strings.
*
* @return int|false
*
* @see https://php.net/collator.compare
*
* @throws MethodNotImplementedException
*/
public function compare(string $string1, string $string2)
{
throw new MethodNotImplementedException(__METHOD__);
}
/**
* Not supported. Get a value of an integer collator attribute.
*
* @return int|false The attribute value on success or false on error
*
* @see https://php.net/collator.getattribute
*
* @throws MethodNotImplementedException
*/
public function getAttribute(int $attribute)
{
throw new MethodNotImplementedException(__METHOD__);
}
/**
* Returns collator's last error code. Always returns the U_ZERO_ERROR class constant value.
*
* @return int|false The error code from last collator call
*/
public function getErrorCode()
{
return Icu::U_ZERO_ERROR;
}
/**
* Returns collator's last error message. Always returns the U_ZERO_ERROR_MESSAGE class constant value.
*
* @return string|false The error message from last collator call
*/
public function getErrorMessage()
{
return 'U_ZERO_ERROR';
}
/**
* Returns the collator's locale.
*
* @return string|false The locale used to create the collator. Currently
* always returns "en".
*/
public function getLocale(int $type = Locale::ACTUAL_LOCALE)
{
return 'en';
}
/**
* Not supported. Get sorting key for a string.
*
* @return string|false The collation key for $string
*
* @see https://php.net/collator.getsortkey
*
* @throws MethodNotImplementedException
*/
public function getSortKey(string $string)
{
throw new MethodNotImplementedException(__METHOD__);
}
/**
* Not supported. Get current collator's strength.
*
* @return int The current collator's strength or false on failure
*
* @see https://php.net/collator.getstrength
*
* @throws MethodNotImplementedException
*/
public function getStrength()
{
throw new MethodNotImplementedException(__METHOD__);
}
/**
* Not supported. Set a collator's attribute.
*
* @return bool True on success or false on failure
*
* @see https://php.net/collator.setattribute
*
* @throws MethodNotImplementedException
*/
public function setAttribute(int $attribute, int $value)
{
throw new MethodNotImplementedException(__METHOD__);
}
/**
* Not supported. Set the collator's strength.
*
* @return bool True on success or false on failure
*
* @see https://php.net/collator.setstrength
*
* @throws MethodNotImplementedException
*/
public function setStrength(int $strength)
{
throw new MethodNotImplementedException(__METHOD__);
}
/**
* Not supported. Sort array using specified collator and sort keys.
*
* @return bool True on success or false on failure
*
* @see https://php.net/collator.sortwithsortkeys
*
* @throws MethodNotImplementedException
*/
public function sortWithSortKeys(array &$array)
{
throw new MethodNotImplementedException(__METHOD__);
}
/**
* Not supported. Sort array using specified collator.
*
* @return bool True on success or false on failure
*
* @see https://php.net/collator.sort
*
* @throws MethodNotImplementedException
*/
public function sort(array &$array, int $flags = self::SORT_REGULAR)
{
throw new MethodNotImplementedException(__METHOD__);
}
}