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<?php |
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/* |
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* This file is part of the feed-io package. |
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* |
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* (c) Alexandre Debril <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace FeedIo\Standard; |
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use FeedIo\Parser\XmlParser; |
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use FeedIo\StandardAbstract; |
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use FeedIo\RuleSet; |
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use FeedIo\Rule\DateTimeBuilder; |
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use FeedIo\Rule\ModifiedSince; |
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use FeedIo\Rule\Title; |
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abstract class XmlAbstract extends StandardAbstract |
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{ |
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/** |
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* Name of the node containing all the feed's items |
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*/ |
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const ITEM_NODE = 'item'; |
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/** |
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* This is for XML Standards |
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*/ |
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const SYNTAX_FORMAT = 'Xml'; |
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/** |
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* RuleSet used to parse the feed's main node |
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* @var \FeedIo\RuleSet |
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*/ |
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protected $feedRuleSet; |
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/** |
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* @var \FeedIo\RuleSet |
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*/ |
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protected $itemRuleSet; |
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/** |
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* Formats the document according to the standard's specification |
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* @param \DOMDocument $document |
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* @return mixed |
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*/ |
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abstract public function format(\DOMDocument $document); |
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/** |
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* @param \DOMDocument $document |
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* @return \DomElement |
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*/ |
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abstract public function getMainElement(\DOMDocument $document); |
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/** |
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* Builds and returns a rule set to parse the root node |
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* @return \FeedIo\RuleSet |
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*/ |
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abstract public function buildFeedRuleSet(); |
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/** |
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* Builds and returns a rule set to parse an item |
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* @return \FeedIo\RuleSet |
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*/ |
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abstract public function buildItemRuleSet(); |
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/** |
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* @return string |
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*/ |
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public function getItemNodeName() |
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{ |
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return static::ITEM_NODE; |
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} |
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/** |
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* @return XmlParser |
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*/ |
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public function newParser() |
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{ |
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return new XmlParser($this, $this->logger); |
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} |
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/** |
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* Returns the RuleSet used to parse the feed's main node |
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* @return \FeedIo\RuleSet |
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*/ |
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public function getFeedRuleSet() |
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{ |
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if (is_null($this->feedRuleSet)) { |
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$this->feedRuleSet = $this->buildFeedRuleSet(); |
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} |
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return $this->feedRuleSet; |
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} |
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/** |
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* @return \FeedIo\RuleSet |
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*/ |
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public function getItemRuleSet() |
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{ |
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if (is_null($this->itemRuleSet)) { |
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$this->itemRuleSet = $this->buildItemRuleSet(); |
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} |
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return $this->itemRuleSet; |
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} |
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/** |
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* @param string $tagName |
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* @return ModifiedSince |
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*/ |
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public function getModifiedSinceRule($tagName) |
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{ |
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$rule = new ModifiedSince($tagName); |
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$rule->setDefaultFormat($this->getDefaultDateFormat()); |
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$rule->setDateTimeBuilder($this->dateTimeBuilder); |
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return $rule; |
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} |
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/** |
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* @return RuleSet |
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*/ |
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protected function buildBaseRuleSet() |
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{ |
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$ruleSet = $ruleSet = new RuleSet(); |
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$ruleSet->add(new Title()); |
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return $ruleSet; |
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} |
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} |
alexdebril /
feed-io
In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: