File NumberFormatter.php | ICanBoogie/CLDR v1.5.0

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<?php

/*
 * This file is part of the ICanBoogie package.
 *
 * (c) Olivier Laviale <olivier.laviale@gmail.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace ICanBoogie\CLDR;

use ICanBoogie\Accessor\AccessorTrait;

/**
 * Formats numbers.
 */
class NumberFormatter implements Formatter
{
    use AccessorTrait;
    use RepositoryPropertyTrait;

    static private $default_symbols = [

        'decimal' => ".",
        'group' => ",",
        'percentSign' => "%",
        'plusSign' => "+",
        'minusSign' => "-",
        'perMille' => "‰"

    ];

    /**
     * Returns the precision of a number.
     *
     * @param number $number
     *
     * @return int
     */
    static public function precision_from($number)
    {
        $number = (string) $number;
        $pos = strrpos($number, '.');

        if (!$pos)
        {
            return 0;
        }

        return strlen($number) - $pos - 1;
    }

    /**
     * Returns a number rounded to the specified precision.
     *
     * @param number $number
     * @param int $precision
     *
     * @return float
     */
    static public function round_to($number, $precision)
    {
        return round($number, $precision);
    }

    /**
     * Parses a number.
     *
     * @param number $number
     * @param null|int $precision
     *
     * @return array
     */
    static public function parse_number($number, $precision=null)
    {
        if ($precision === null)
        {
            $precision = self::precision_from($number);
        }

        $number = self::round_to($number, $precision);
        $number = abs($number);
        $number = number_format($number, $precision, '.', '');

        return explode('.', (string) $number);
    }

    /**
     * @param Repository $repository
     */
    public function __construct(Repository $repository=null)
    {
        $this->repository = $repository;
    }

    /**
     * Format a number with the specified pattern.
     *
     * Note, if the pattern contains '%', the number will be multiplied by 100 first. If the
     * pattern contains '‰', the number will be multiplied by 1000.
     *
     * @param mixed $number The number to be formatted.
     * @param string $pattern The pattern used to format the number.
     * @param array $symbols Symbols.
     *
     * @return string The formatted number.
     */
    public function __invoke($number, $pattern, array $symbols = [])
    {
        return $this->format($number, $pattern, $symbols);
    }

    /**
     * Format a number with the specified pattern.
     *
     * Note, if the pattern contains '%', the number will be multiplied by 100 first. If the
     * pattern contains '‰', the number will be multiplied by 1000.
     *
     * @param mixed $number The number to be formatted.
     * @param string $pattern The pattern used to format the number.
     * @param array $symbols Symbols.
     *
     * @return string The formatted number.
     */
    public function format($number, $pattern, array $symbols = [])
    {
        if (!($pattern instanceof NumberPattern))
        {
            $pattern = NumberPattern::from($pattern);
        }

        $symbols += self::$default_symbols;

        list($integer, $decimal) = $pattern->parse_number($number);

        $formatted_integer = $pattern->format_integer_with_group($integer, $symbols['group']);
        $formatted_number = $pattern->format_integer_with_decimal($formatted_integer, $decimal, $symbols['decimal']);

        if ($number < 0)
        {
            $number = $pattern->negative_prefix . $formatted_number . $pattern->negative_suffix;
        }
        else
        {
            $number = $pattern->positive_prefix . $formatted_number . $pattern->positive_suffix;
        }

        return strtr($number, [

            '%' => $symbols['percentSign'],
            '‰' => $symbols['perMille']

        ]);
    }

    /**
     * Localize the instance.
     *
     * @param string $locale_code
     *
     * @return LocalizedNumberFormatter
     *
     * @throw \LogicException when the instance was created without a repository.
     */
    public function localize($locale_code)
    {
        if (!$this->repository)
        {
            throw new \LogicException("The instance was created without a repository.");
        }

        return $this->repository->locales[$locale_code]->localize($this);
    }
}

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