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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Intl\Collator;
use Symfony\Component\Intl\Exception\MethodArgumentValueNotImplementedException;
use Symfony\Component\Intl\Exception\MethodNotImplementedException;
use Symfony\Component\Intl\Globals\IntlGlobals;
use Symfony\Component\Intl\Locale\Locale;
/**
* 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 <igor@wiedler.ch>
* @author Bernhard Schussek <bschussek@gmail.com>
*
* @internal
*/
class Collator
{
/* Attribute constants */
const FRENCH_COLLATION = 0;
const ALTERNATE_HANDLING = 1;
const CASE_FIRST = 2;
const CASE_LEVEL = 3;
const NORMALIZATION_MODE = 4;
const STRENGTH = 5;
const HIRAGANA_QUATERNARY_MODE = 6;
const NUMERIC_COLLATION = 7;
/* Attribute constants values */
const DEFAULT_VALUE = -1;
const PRIMARY = 0;
const SECONDARY = 1;
const TERTIARY = 2;
const DEFAULT_STRENGTH = 2;
const QUATERNARY = 3;
const IDENTICAL = 15;
const OFF = 16;
const ON = 17;
const SHIFTED = 20;
const NON_IGNORABLE = 21;
const LOWER_FIRST = 24;
const UPPER_FIRST = 25;
/* Sorting options */
const SORT_REGULAR = 0;
const SORT_NUMERIC = 2;
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 $locale different than "en" or null is passed
*/
public function __construct($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 self
*
* @throws MethodArgumentValueNotImplementedException When $locale different than "en" or null is passed
*/
public static function create($locale)
{
return new self($locale);
}
/**
* Sort array maintaining index association.
*
* @param array &$array Input array
* @param int $sortFlag Flags for sorting, can be one of the following:
* Collator::SORT_REGULAR - compare items normally (don't change types)
* Collator::SORT_NUMERIC - compare items numerically
* Collator::SORT_STRING - compare items as strings
*
* @return bool True on success or false on failure
*/
public function asort(&$array, $sortFlag = self::SORT_REGULAR)
{
$intlToPlainFlagMap = [
self::SORT_REGULAR => SORT_REGULAR,
self::SORT_NUMERIC => SORT_NUMERIC,
self::SORT_STRING => SORT_STRING,
];
$plainSortFlag = isset($intlToPlainFlagMap[$sortFlag]) ? $intlToPlainFlagMap[$sortFlag] : self::SORT_REGULAR;
return asort($array, $plainSortFlag);
}
/**
* Not supported. Compare two Unicode strings.
*
* @param string $str1 The first string to compare
* @param string $str2 The second string to compare
*
* @return bool|int Return the comparison result or false on failure:
* 1 if $str1 is greater than $str2
* 0 if $str1 is equal than $str2
* -1 if $str1 is less than $str2
*
* @see https://php.net/collator.compare
*
* @throws MethodNotImplementedException
*/
public function compare($str1, $str2)
{
throw new MethodNotImplementedException(__METHOD__);
}
/**
* Not supported. Get a value of an integer collator attribute.
*
* @param int $attr An attribute specifier, one of the attribute constants
*
* @return bool|int The attribute value on success or false on error
*
* @see https://php.net/collator.getattribute
*
* @throws MethodNotImplementedException
*/
public function getAttribute($attr)
{
throw new MethodNotImplementedException(__METHOD__);
}
/**
* Returns collator's last error code. Always returns the U_ZERO_ERROR class constant value.
*
* @return int The error code from last collator call
*/
public function getErrorCode()
{
return IntlGlobals::U_ZERO_ERROR;
}
/**
* Returns collator's last error message. Always returns the U_ZERO_ERROR_MESSAGE class constant value.
*
* @return string The error message from last collator call
*/
public function getErrorMessage()
{
return 'U_ZERO_ERROR';
}
/**
* Returns the collator's locale.
*
* @param int $type Not supported. The locale name type to return (Locale::VALID_LOCALE or Locale::ACTUAL_LOCALE)
*
* @return string The locale used to create the collator. Currently always
* returns "en".
*/
public function getLocale($type = Locale::ACTUAL_LOCALE)
{
return 'en';
}
/**
* Not supported. Get sorting key for a string.
*
* @param string $string The string to produce the key from
*
* @return string The collation key for $string
*
* @see https://php.net/collator.getsortkey
*
* @throws MethodNotImplementedException
*/
public function getSortKey($string)
{
throw new MethodNotImplementedException(__METHOD__);
}
/**
* Not supported. Get current collator's strength.
*
* @return bool|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.
*
* @param int $attr An attribute specifier, one of the attribute constants
* @param int $val The attribute value, one of the attribute value constants
*
* @return bool True on success or false on failure
*
* @see https://php.net/collator.setattribute
*
* @throws MethodNotImplementedException
*/
public function setAttribute($attr, $val)
{
throw new MethodNotImplementedException(__METHOD__);
}
/**
* Not supported. Set the collator's strength.
*
* @param int $strength Strength to set, possible values:
* Collator::PRIMARY
* Collator::SECONDARY
* Collator::TERTIARY
* Collator::QUATERNARY
* Collator::IDENTICAL
* Collator::DEFAULT
*
* @return bool True on success or false on failure
*
* @see https://php.net/collator.setstrength
*
* @throws MethodNotImplementedException
*/
public function setStrength($strength)
{
throw new MethodNotImplementedException(__METHOD__);
}
/**
* Not supported. Sort array using specified collator and sort keys.
*
* @param array &$arr Array of strings to sort
*
* @return bool True on success or false on failure
*
* @see https://php.net/collator.sortwithsortkeys
*
* @throws MethodNotImplementedException
*/
public function sortWithSortKeys(&$arr)
{
throw new MethodNotImplementedException(__METHOD__);
}
/**
* Not supported. Sort array using specified collator.
*
* @param array &$arr Array of string to sort
* @param int $sortFlag Optional sorting type, one of the following:
* Collator::SORT_REGULAR
* Collator::SORT_NUMERIC
* Collator::SORT_STRING
*
* @return bool True on success or false on failure
*
* @see https://php.net/collator.sort
*
* @throws MethodNotImplementedException
*/
public function sort(&$arr, $sortFlag = self::SORT_REGULAR)
{
throw new MethodNotImplementedException(__METHOD__);
}
}
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