Classes List

Symfony\Component\Translation\MessageSelector

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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\Translation;

use Symfony\Component\Translation\Exception\InvalidArgumentException;

/** * MessageSelector. * * @author Fabien Potencier <fabien@symfony.com> * @author Bernhard Schussek <bschussek@gmail.com> */
class MessageSelector
{
    /** * Given a message with different plural translations separated by a * pipe (|), this method returns the correct portion of the message based * on the given number, locale and the pluralization rules in the message * itself. * * The message supports two different types of pluralization rules: * * interval: {0} There are no apples|{1} There is one apple|]1,Inf] There are %count% apples * indexed: There is one apple|There are %count% apples * * The indexed solution can also contain labels (e.g. one: There is one apple). * This is purely for making the translations more clear - it does not * affect the functionality. * * The two methods can also be mixed: * {0} There are no apples|one: There is one apple|more: There are %count% apples * * @param string $message The message being translated * @param int $number The number of items represented for the message * @param string $locale The locale to use for choosing * * @return string * * @throws InvalidArgumentException */
    public function choose($message$number$locale)
    {
        $parts = array();
        if (preg_match('/^\|++$/'$message)) {
            $parts = explode('|'$message);
        } elseif (preg_match_all('/(?:\|\||[^\|])++/'$message$matches)) {
            $parts = $matches[0];
        }

        $explicitRules = array();
        $standardRules = array();
        foreach ($parts as $part) {
            $part = trim(str_replace('||''|'$part));

            if (preg_match('/^(?P<interval>'.Interval::getIntervalRegexp().')\s*(?P<message>.*?)$/xs'$part$matches)) {
                $explicitRules[$matches['interval']] = $matches['message'];
            } elseif (preg_match('/^\w+\:\s*(.*?)$/'$part$matches)) {
                $standardRules[] = $matches[1];
            } else {
                $standardRules[] = $part;
            }
        }

        // try to match an explicit rule, then fallback to the standard ones
        foreach ($explicitRules as $interval => $m) {
            if (Interval::test($number$interval)) {
                return $m;
            }
        }

        $position = PluralizationRules::get($number$locale);

        if (!isset($standardRules[$position])) {
            // when there's exactly one rule given, and that rule is a standard
            // rule, use this rule
            if (1 === count($parts&& isset($standardRules[0])) {
                return $standardRules[0];
            }

            throw new InvalidArgumentException(sprintf('Unable to choose a translation for "%s" with locale "%s" for value "%d". Double check that this translation has the correct plural options (e.g. "There is one apple|There are %%count%% apples").'$message$locale$number));
        }

        return $standardRules[$position];
    }
}