SchemaFormatter.php

<?php
 
namespace Guzzle\Service\Description;
 
use Guzzle\Common\Exception\InvalidArgumentException;
 
class SchemaFormatter
{
    protected static $utcTimeZone;
 
    public static function format($format, $value)
    {
        switch ($format) {
            case 'date-time':
                return self::formatDateTime($value);
            case 'date-time-http':
                return self::formatDateTimeHttp($value);
            case 'date':
                return self::formatDate($value);
            case 'time':
                return self::formatTime($value);
            case 'timestamp':
                return self::formatTimestamp($value);
            case 'boolean-string':
                return self::formatBooleanAsString($value);
            default:
                return $value;
        }
    }
 
    public static function formatDateTime($value)
    {
        return self::dateFormatter($value, 'Y-m-d\TH:i:s\Z');
    }
 
    public static function formatDateTimeHttp($value)
    {
        return self::dateFormatter($value, 'D, d M Y H:i:s \G\M\T');
    }
 
    public static function formatDate($value)
    {
        return self::dateFormatter($value, 'Y-m-d');
    }
 
    public static function formatTime($value)
    {
        return self::dateFormatter($value, 'H:i:s');
    }
 
    public static function formatBooleanAsString($value)
    {
        return filter_var($value, FILTER_VALIDATE_BOOLEAN) ? 'true' : 'false';
    }
 
    public static function formatTimestamp($value)
    {
        return (int) self::dateFormatter($value, 'U');
    }
 
    protected static function getUtcTimeZone()
    {
        // @codeCoverageIgnoreStart
        if (!self::$utcTimeZone) {
            self::$utcTimeZone = new \DateTimeZone('UTC');
        }
        // @codeCoverageIgnoreEnd
 
        return self::$utcTimeZone;
    }
 
    protected static function dateFormatter($dateTime, $format)
    {
        if (is_numeric($dateTime)) {
            return gmdate($format, (int) $dateTime);
        }
 
        if (is_string($dateTime)) {
            $dateTime = new \DateTime($dateTime);
        }
 
        if ($dateTime instanceof \DateTime) {
            return $dateTime->setTimezone(self::getUtcTimeZone())->format($format);
        }
 
        throw new InvalidArgumentException('Date/Time values must be either a string, integer, or DateTime object');
    }
}