File ContextTransforms.php | ICanBoogie/CLDR master

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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;

/**
 * @see http://unicode.org/reports/tr35/tr35-general.html#contextTransformUsage_type_attribute_values
 */
class ContextTransforms
{
    const USAGE_ALL = 'all';
    const USAGE_LANGUAGE = 'language';
    const USAGE_SCRIPT = 'script';
    const USAGE_TERRITORY = 'territory';
    const USAGE_VARIANT = 'variant';
    const USAGE_KEY = 'key';
    const USAGE_KEYVALUE = 'keyValue';
    const USAGE_MONTH_FORMAT_EXCEPT_NARROW = 'month-format-except-narrow';
    const USAGE_MONTH_STANDALONE_EXCEPT_NARROW = 'month-standalone-except-narrow';
    const USAGE_MONTH_NARROW = 'month-narrow';
    const USAGE_DAY_FORMAT_EXCEPT_NARROW = 'day-format-except-narrow';
    const USAGE_DAY_STANDALONE_EXCEPT_NARROW = 'day-standalone-except-narrow';
    const USAGE_DAY_NARROW = 'day-narrow';
    const USAGE_ERA_NAME = 'era-name';
    const USAGE_ERA_ABBR = 'era-abbr';
    const USAGE_ERA_NARROW = 'era-narrow';
    const USAGE_QUARTER_FORMAT_WIDE = 'quarter-format-wide';
    const USAGE_QUARTER_STANDALONE_WIDE = 'quarter-standalone-wide';
    const USAGE_QUARTER_ABBREVIATED = 'quarter-abbreviated';
    const USAGE_QUARTER_NARROW = 'quarter-narrow';
    const USAGE_CALENDAR_FIELD = 'calendar-field';
    const USAGE_ZONE_EXEMPLARCITY = 'zone-exemplarCity';
    const USAGE_ZONE_LONG = 'zone-long';
    const USAGE_ZONE_SHORT = 'zone-short';
    const USAGE_METAZONE_LONG = 'metazone-long';
    const USAGE_METAZONE_SHORT = 'metazone-short';
    const USAGE_SYMBOL = 'symbol';
    const USAGE_CURRENCYNAME = 'currencyName';
    const USAGE_CURRENCYNAME_COUNT = 'currencyName-count';
    const USAGE_RELATIVE = 'relative';
    const USAGE_UNIT_PATTERN = 'unit-pattern';
    const USAGE_NUMBER_SPELLOUT = 'number-spellout';

    const TYPE_UILIST_OR_MENU = 'uiListOrMenu';
    const TYPE_STAND_ALONE = 'stand-alone';

    const TRANSFORM_TITLECASE_FIRSTWORD = 'titlecase-firstword';
    const TRANSFORM_NO_CHANGE = 'no-change';

    /**
     * @var array
     */
    private $rules;

    /**
     * @param array $rules
     */
    public function __construct(array $rules)
    {
        $this->rules = $rules;
    }

    /**
     * @param string $str
     * @param string $usage One of `USAGE_*`.
     * @param string $type One of `TYPE_*`.
     *
     * @return string
     */
    public function transform($str, $usage, $type)
    {
        $rules = $this->rules;

        if (empty($rules[$usage]))
        {
            $usage = self::USAGE_ALL;
        }

        if (empty($rules[$usage][$type]))
        {
            return $str;
        }

        $transform = $rules[$usage][$type];

        switch ($transform)
        {
            case self::TRANSFORM_TITLECASE_FIRSTWORD:
                return $this->titlecase_firstword($str);

            case self::TRANSFORM_NO_CHANGE;
                return $str;

            default:
                throw new \LogicException("Don't know how to apply transform: $transform");
        }
    }

    /**
     * @param string $str
     *
     * @return string
     */
    private function titlecase_firstword($str)
    {
        return mb_strtoupper(mb_substr($str, 0, 1)) . mb_substr($str, 1);
    }
}

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