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<?php
/**
* Base class for oEmbed objects
*
* PHP version 5.1.0+
*
* Copyright (c) 2008, Digg.com, Inc.
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of Digg.com, Inc. nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* @category Services
* @package Services_oEmbed
* @author Joe Stump <joe@joestump.net>
* @copyright 2008 Digg.com, Inc.
* @license http://tinyurl.com/42zef New BSD License
* @version SVN: @version@
* @link http://code.google.com/p/digg
* @link http://oembed.com
*/
/**
* Base class for oEmbed objects
*
* @category Services
* @package Services_oEmbed
* @author Joe Stump <joe@joestump.net>
* @copyright 2008 Digg.com, Inc.
* @license http://tinyurl.com/42zef New BSD License
* @version Release: @version@
* @link http://code.google.com/p/digg
* @link http://oembed.com
*/
abstract class Services_oEmbed_Object_Common
{
/**
* Raw object returned from API
*
* @var object $object The raw object from the API
*/
protected $object = null;
/**
* Required fields per the specification
*
* @var array $required Array of required fields
* @link http://oembed.com
*/
protected $required = array();
/**
* Constructor
*
* @param object $object Raw object returned from the API
*
* @throws {@link Services_oEmbed_Object_Exception} on missing fields
* @return void
*/
public function __construct($object)
{
$this->object = $object;
$this->required[] = 'version';
foreach ($this->required as $field) {
if (!isset($this->$field)) {
throw new Services_oEmbed_Object_Exception(
'Object is missing required ' . $field . ' attribute'
);
}
}
}
/**
* Get object variable
*
* @param string $var Variable to get
*
* @see Services_oEmbed_Object_Common::$object
* @return mixed Attribute's value or null if it's not set/exists
*/
public function __get($var)
{
if (property_exists($this->object, $var)) {
return $this->object->$var;
}
return null;
}
/**
* Is variable set?
*
* @param string $var Variable name to check
*
* @return boolean True if set, false if not
* @see Services_oEmbed_Object_Common::$object
*/
public function __isset($var)
{
if (property_exists($this->object, $var)) {
return (isset($this->object->$var));
}
return false;
}
/**
* Require a sane __toString for all objects
*
* @return string
*/
abstract public function __toString();
}
?>
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